UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549





FORM 10-Q







|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended MARCH 31, 2009

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period from  to

Commission File Number: 0-24920





ERP OPERATING LIMITED PARTNERSHIP

(Exact name of registrant as specified in
its charter)







|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Illinois                                                       |  | 36-3894853                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)



|                                             |  |           
|-------------------------------------------- |  | ----------
|Two North Riverside Plaza, Chicago, Illinois |  | 60606     
|(Address of principal executive offices)     |  | (Zip Code)

(312) 474-1300

(Registrants telephone number, including area code)





Indicate by check mark whether
the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports),
and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No   ̈

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File
required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).    Yes   ̈    No   ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer,
accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.



|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  | x                                                |  | Accelerated filer         |  |  ̈
|                        |  |                                                  | 
|Non-accelerated filer   |  |  ̈  (Do not check if a smaller reporting company) |  | Smaller reporting company |  |  ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Exchange Act).    Yes   ̈    No  x









---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED BALANCE SHEETS

(Amounts in thousands)

(Unaudited)



|                                                      |  |               |             |                  |   |            
|----------------------------------------------------- |  | ------------- | ----------- | ---------------- | - | -----------
|                                                      |  | March 31,2009 |             | December 31,2008
|ASSETS                                                |  |               |             |                  |   |            
|Investment in real estate                             |  |               |             |                  |   |            
|Land                                                  |  | $             | 3,675,048   |                  | $ | 3,671,299  
|Depreciable property                                  |  |               | 14,002,717  |                  |   | 13,908,594 
|Projects under development                            |  |               | 762,641     |                  |   | 855,473    
|Land held for development                             |  |               | 258,923     |                  |   | 254,873    
|                                                      |  |               |             |                  |   |            
|Investment in real estate                             |  |               | 18,699,329  |                  |   | 18,690,239 
|Accumulated depreciation                              |  |               | (3,674,402) |                  |   | (3,561,300)
|                                                      |  |               |             |                  |   |            
|Investment in real estate, net                        |  |               | 15,024,927  |                  |   | 15,128,939 
|                                                      |  |              
|Cash and cash equivalents                             |  |               | 428,596     |                  |   | 890,794    
|Investments in unconsolidated entities                |  |               | 8,196       |                  |   | 5,795      
|Deposits  restricted                                 |  |               | 187,176     |                  |   | 152,372    
|Escrow deposits  mortgage                            |  |               | 19,483      |                  |   | 19,729     
|Deferred financing costs, net                         |  |               | 55,905      |                  |   | 53,817     
|Other assets                                          |  |               | 311,373     |                  |   | 283,664    
|                                                      |  |               |             |                  |   |            
|Total assets                                          |  | $             | 16,035,656  |                  | $ | 16,535,110 
|                                                      |  |               |             |                  |   |            
|                                                      |  |              
|LIABILITIES AND CAPITAL                               |  |               |             |                  |   |            
|Liabilities:                                          |  |               |             |                  |   |            
|Mortgage notes payable                                |  | $             | 4,941,277   |                  | $ | 5,036,930  
|Notes, net                                            |  |               | 5,141,358   |                  |   | 5,447,012  
|Lines of credit                                       |  |               | -           |                  |   | -          
|Accounts payable and accrued expenses                 |  |               | 128,008     |                  |   | 108,463    
|Accrued interest payable                              |  |               | 75,268      |                  |   | 113,846    
|Other liabilities                                     |  |               | 243,541     |                  |   | 289,562    
|Security deposits                                     |  |               | 63,484      |                  |   | 64,355     
|Distributions payable                                 |  |               | 142,209     |                  |   | 141,843    
|                                                      |  |               |             |                  |   |            
|Total liabilities                                     |  |               | 10,735,145  |                  |   | 11,202,011 
|                                                      |  |               |             |                  |   |            
|                                                      |  |              
|Commitments and contingencies                         |  |               |             |                  |   |            
|                                                      |  |              
|Capital:                                              |  |               |             |                  |   |            
|Partners capital:                                    |  |               |             |                  |   |            
|Preference Units                                      |  |               | 208,773     |                  |   | 208,786    
|Preference Interests and Junior Preference Units      |  |               | 184         |                  |   | 184        
|General Partner                                       |  |               | 4,811,009   |                  |   | 4,840,613  
|Limited Partners                                      |  |               | 284,332     |                  |   | 293,795    
|Accumulated other comprehensive loss                  |  |               | (29,289)    |                  |   | (35,799)   
|                                                      |  |               |             |                  |   |            
|Total partners capital                               |  |               | 5,275,009   |                  |   | 5,307,579  
|Noncontrolling Interests  Partially Owned Properties |  |               | 25,502      |                  |   | 25,520     
|                                                      |  |               |             |                  |   |            
|Total capital                                         |  |               | 5,300,511   |                  |   | 5,333,099  
|                                                      |  |               |             |                  |   |            
|Total liabilities and capital                         |  | $             | 16,035,656  |                  | $ | 16,535,110 
|                                                      |  |               |             |                  |   |            



See accompanying notes

2



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS

(Amounts in thousands except per Unit
data)

(Unaudited)



|                                                                                                                                                                 |  |                         |           |      |   |          
|---------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------- | --------- | ---- | - | ---------
|                                                                                                                                                                 |  | Quarter Ended March 31,
|                                                                                                                                                                 |  | 2009                    |           | 2008
|REVENUES                                                                                                                                                         |  |                         |           |      |   |          
|Rental income                                                                                                                                                    |  | $                       | 512,281   |      | $ | 500,347  
|Fee and asset management                                                                                                                                         |  |                         | 2,863     |      |   | 2,294    
|                                                                                                                                                                 |  |                         |           |      |   |          
|Total revenues                                                                                                                                                   |  |                         | 515,144   |      |   | 502,641  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|EXPENSES                                                                                                                                                         |  |                         |           |      |   |          
|Property and maintenance                                                                                                                                         |  |                         | 133,543   |      |   | 132,837  
|Real estate taxes and insurance                                                                                                                                  |  |                         | 55,964    |      |   | 53,327   
|Property management                                                                                                                                              |  |                         | 19,014    |      |   | 21,176   
|Fee and asset management                                                                                                                                         |  |                         | 2,003     |      |   | 2,180    
|Depreciation                                                                                                                                                     |  |                         | 150,045   |      |   | 141,195  
|General and administrative                                                                                                                                       |  |                         | 10,394    |      |   | 12,417   
|                                                                                                                                                                 |  |                         |           |      |   |          
|Total expenses                                                                                                                                                   |  |                         | 370,963   |      |   | 363,132  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|Operating income                                                                                                                                                 |  |                         | 144,181   |      |   | 139,509  
|                                                                                                                                                                 |  |                        
|Interest and other income                                                                                                                                        |  |                         | 6,021     |      |   | 3,369    
|Other expenses                                                                                                                                                   |  |                         | (292)     |      |   | (176)    
|Interest:                                                                                                                                                        |  |                         |           |      |   |          
|Expense incurred, net                                                                                                                                            |  |                         | (123,897) |      |   | (119,518)
|Amortization of deferred financing costs                                                                                                                         |  |                         | (2,965)   |      |   | (2,160)  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|Income before income and other taxes, (loss) frominvestments in unconsolidated entities, net gain on sales ofunconsolidated entities
and discontinued operations |  |                         | 23,048    |      |   | 21,024   
|Income and other tax (expense) benefit                                                                                                                           |  |                         | (2,131)   |      |   | (2,995)  
|(Loss) from investments in unconsolidated entities                                                                                                               |  |                         | (195)     |      |   | (95)     
|Net gain on sales of unconsolidated entities                                                                                                                     |  |                         | 2,765     |      |   | -        
|                                                                                                                                                                 |  |                         |           |      |   |          
|Income from continuing operations                                                                                                                                |  |                         | 23,487    |      |   | 17,934   
|Discontinued operations, net                                                                                                                                     |  |                         | 61,934    |      |   | 129,594  
|                                                                                                                                                                 |  |                         |           |      |   |          
|Net income                                                                                                                                                       |  |                         | 85,421    |      |   | 147,528  
|Net loss (income) attributable to NoncontrollingInterests  Partially Owned Properties                                                                           |  |                         | 69        |      |   | (268)    
|                                                                                                                                                                 |  |                         |           |      |   |          
|Net income attributable to controlling interests                                                                                                                 |  | $                       | 85,490    |      | $ | 147,260  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|ALLOCATION OF NET INCOME:                                                                                                                                        |  |                         |           |      |   |          
|Preference Units                                                                                                                                                 |  | $                       | 3,620     |      | $ | 3,633    
|                                                                                                                                                                 |  |                         |           |      |   |          
|Preference Interests and Junior Preference Units                                                                                                                 |  | $                       | 4         |      | $ | 4        
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|General Partner                                                                                                                                                  |  | $                       | 77,175    |      | $ | 134,490  
|Limited Partners                                                                                                                                                 |  |                         | 4,691     |      |   | 9,133    
|                                                                                                                                                                 |  |                         |           |      |   |          
|Net income available to Units                                                                                                                                    |  | $                       | 81,866    |      | $ | 143,623  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|Earnings per Unit  basic:                                                                                                                                       |  |                         |           |      |   |          
|Income from continuing operations available to Units                                                                                                             |  | $                       | 0.07      |      | $ | 0.05     
|                                                                                                                                                                 |  |                         |           |      |   |          
|Net income available to Units                                                                                                                                    |  | $                       | 0.28      |      | $ | 0.50     
|                                                                                                                                                                 |  |                         |           |      |   |          
|Weighted average Units outstanding                                                                                                                               |  |                         | 288,710   |      |   | 287,079  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|Earnings per Unit  diluted:                                                                                                                                     |  |                         |           |      |   |          
|Income from continuing operations available to Units                                                                                                             |  | $                       | 0.07      |      | $ | 0.05     
|                                                                                                                                                                 |  |                         |           |      |   |          
|Net income available to Units                                                                                                                                    |  | $                       | 0.28      |      | $ | 0.50     
|                                                                                                                                                                 |  |                         |           |      |   |          
|Weighted average Units outstanding                                                                                                                               |  |                         | 288,853   |      |   | 289,317  
|                                                                                                                                                                 |  |                         |           |      |   |          
|                                                                                                                                                                 |  |                        
|Distributions declared per Unit outstanding                                                                                                                      |  | $                       | 0.4825    |      | $ | 0.4825   
|                                                                                                                                                                 |  |                         |           |      |   |          



See accompanying notes

3



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF OPERATIONS (Continued)

(Amounts in thousands
except per Unit data)

(Unaudited)



|                                                                  |  |                         |        |      |   |        
|----------------------------------------------------------------- |  | ----------------------- | ------ | ---- | - | -------
|                                                                  |  | Quarter Ended March 31,
|                                                                  |  | 2009                    |        | 2008
|Comprehensive income:                                             |  |                         |        |      |   |        
|                                                                  |  |                        
|Net income                                                        |  | $                       | 85,421 |      | $ | 147,528
|Other comprehensive income (loss)  derivative instruments:       |  |                         |        |      |   |        
|Unrealized holding gains (losses) arising during the period       |  |                         | 2,660  |      |   | (9,148)
|Losses reclassified into earnings from other comprehensive income |  |                         | 1,493  |      |   | 513    
|Other                                                             |  |                         | 449    |      |   | -      
|Other comprehensive income (loss)  other instruments:            |  |                         |        |      |   |        
|Unrealized holding gains (losses) arising during the period       |  |                         | 1,908  |      |   | (396)  
|                                                                  |  |                         |        |      |   |        
|Comprehensive income                                              |  |                         | 91,931 |      |   | 138,497
|Comprehensive loss (income) attributable to Noncontrolling        |  |                         |        |      |   |        
|Interests  Partially Owned Properties                            |  |                         | 69     |      |   | (268)  
|                                                                  |  |                         |        |      |   |        
|Comprehensive income attributable to controlling interests        |  | $                       | 92,000 |      | $ | 138,229
|                                                                  |  |                         |        |      |   |        



See accompanying notes

4



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in thousands)

(Unaudited)



|                                                                                  |  |                         |          |      |   |          
|--------------------------------------------------------------------------------- |  | ----------------------- | -------- | ---- | - | ---------
|                                                                                  |  | Quarter Ended March 31,
|                                                                                  |  | 2009                    |          | 2008
|CASH FLOWS FROM OPERATING ACTIVITIES:                                             |  |                         |          |      |   |          
|Net income                                                                        |  | $                       | 85,421   |      | $ | 147,528  
|Adjustments to reconcile net income to net cash provided by operating activities: |  |                         |          |      |   |          
|Depreciation                                                                      |  |                         | 150,488  |      |   | 147,580  
|Amortization of deferred financing costs                                          |  |                         | 2,997    |      |   | 2,161    
|Amortization of discounts and premiums on debt                                    |  |                         | 1,706    |      |   | 1,350    
|Amortization of discounts on corporate notes                                      |  |                         | (1,096)  |      |   | -        
|Amortization of deferred settlements on derivative instruments                    |  |                         | 1,148    |      |   | 168      
|Write-off of pursuit costs                                                        |  |                         | 192      |      |   | 175      
|Transaction costs                                                                 |  |                         | 100      |      |   | 1        
|Loss from investments in unconsolidated entities                                  |  |                         | 195      |      |   | 95       
|Distributions from unconsolidated entities  return on capital                    |  |                         | 59       |      |   | 23       
|Net (gain) on sales of unconsolidated entities                                    |  |                         | (2,765)  |      |   | -        
|Net (gain) on sales of discontinued operations                                    |  |                         | (61,871) |      |   | (122,517)
|(Gain) on debt extinguishments                                                    |  |                         | (1,985)  |      |   | -        
|Compensation paid with Company Common Shares                                      |  |                         | 4,920    |      |   | 5,995    
|                                                                                  |  |                        
|Changes in assets and liabilities:                                                |  |                         |          |      |   |          
|Decrease (increase) in deposits  restricted                                      |  |                         | 1,039    |      |   | (656)    
|Decrease in other assets                                                          |  |                         | 6,763    |      |   | 12,268   
|Increase in accounts payable and accrued expenses                                 |  |                         | 19,026   |      |   | 40,778   
|(Decrease) in accrued interest payable                                            |  |                         | (38,578) |      |   | (46,020) 
|(Decrease) in other liabilities                                                   |  |                         | (24,437) |      |   | (23,480) 
|(Decrease) increase in security deposits                                          |  |                         | (871)    |      |   | 1,027    
|                                                                                  |  |                         |          |      |   |          
|Net cash provided by operating activities                                         |  |                         | 142,451  |      |   | 166,476  
|                                                                                  |  |                         |          |      |   |          
|                                                                                  |  |                        
|CASH FLOWS FROM INVESTING ACTIVITIES:                                             |  |                         |          |      |   |          
|Investment in real estate  acquisitions                                          |  |                         | -        |      |   | (41,907) 
|Investment in real estate  development/other                                     |  |                         | (82,171) |      |   | (125,875)
|Improvements to real estate                                                       |  |                         | (26,644) |      |   | (40,744) 
|Additions to non-real estate property                                             |  |                         | (712)    |      |   | (1,026)  
|Interest capitalized for real estate under development                            |  |                         | (10,617) |      |   | (14,714) 
|Proceeds from disposition of real estate, net                                     |  |                         | 133,154  |      |   | 284,289  
|Proceeds from disposition of unconsolidated entities                              |  |                         | -        |      |   | 2,629    
|Distributions from unconsolidated entities  return of capital                    |  |                         | 110      |      |   | -        
|Investment in corporate notes/other                                               |  |                         | (52,822) |      |   | -        
|Proceeds from sale of corporate notes/other                                       |  |                         | 15,000   |      |   | -        
|Transaction costs                                                                 |  |                         | (100)    |      |   | (1)      
|(Increase) decrease in deposits on real estate acquisitions, net                  |  |                         | (43,020) |      |   | 32,145   
|Decrease in mortgage deposits                                                     |  |                         | 246      |      |   | 262      
|Acquisition of Noncontrolling Interests  Partially Owned Properties              |  |                         | (2,823)  |      |   | (20)     
|                                                                                  |  |                         |          |      |   |          
|Net cash (used for) provided by investing activities                              |  |                         | (70,399) |      |   | 95,038   
|                                                                                  |  |                         |          |      |   |          



See accompanying notes

5



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)



|                                                                      |  |                         |           |      |   |          
|--------------------------------------------------------------------- |  | ----------------------- | --------- | ---- | - | ---------
|                                                                      |  | Quarter Ended March 31,
|                                                                      |  | 2009                    |           | 2008
|CASH FLOWS FROM FINANCING ACTIVITIES:                                 |  |                         |           |      |   |          
|Loan and bond acquisition costs                                       |  | $                       | (6,096)   |      | $ | (3,686)  
|Mortgage notes payable:                                               |  |                         |           |      |   |          
|Proceeds                                                              |  |                         | 57,713    |      |   | 563,101  
|Restricted cash                                                       |  |                         | 7,177     |      |   | 5,574    
|Lump sum payoffs                                                      |  |                         | (141,132) |      |   | (68,318) 
|Scheduled principal repayments                                        |  |                         | (5,111)   |      |   | (6,213)  
|Prepayment premiums/fees                                              |  |                         | (35)      |      |   | -        
|Notes, net:                                                           |  |                         |           |      |   |          
|Lump sum payoffs                                                      |  |                         | (307,820) |      |   | -        
|Gain on debt extinguishments                                          |  |                         | 2,020     |      |   | -        
|Lines of credit:                                                      |  |                         |           |      |   |          
|Proceeds                                                              |  |                         | -         |      |   | 841,000  
|Repayments                                                            |  |                         | -         |      |   | (980,000)
|Proceeds from (payments on) settlement of derivative instruments      |  |                         | 449       |      |   | (13,256) 
|Proceeds from sale of OP Units                                        |  |                         | 2,787     |      |   | 2,718    
|Proceeds from exercise of EQR options                                 |  |                         | 105       |      |   | 3,034    
|OP Units repurchased and retired                                      |  |                         | (1,124)   |      |   | (10,935) 
|Payment of offering costs                                             |  |                         | (121)     |      |   | (8)      
|Contributions  Noncontrolling Interests  Partially Owned Properties |  |                         | 522       |      |   | 323      
|Contributions  Limited Partners                                      |  |                         | 78        |      |   | -        
|Distributions:                                                        |  |                         |           |      |   |          
|OP Units  General Partner                                            |  |                         | (131,567) |      |   | (130,113)
|Preference Units                                                      |  |                         | (3,620)   |      |   | (3,635)  
|Preference Interests and Junior Preference Units                      |  |                         | (4)       |      |   | (4)      
|OP Units  Limited Partners                                           |  |                         | (8,000)   |      |   | (8,888)  
|Noncontrolling Interests  Partially Owned Properties                 |  |                         | (471)     |      |   | (390)    
|                                                                      |  |                         |           |      |   |          
|Net cash (used for) provided by financing activities                  |  |                         | (534,250) |      |   | 190,304  
|                                                                      |  |                         |           |      |   |          
|Net (decrease) increase in cash and cash equivalents                  |  |                         | (462,198) |      |   | 451,818  
|Cash and cash equivalents, beginning of period                        |  |                         | 890,794   |      |   | 50,831   
|                                                                      |  |                         |           |      |   |          
|Cash and cash equivalents, end of period                              |  | $                       | 428,596   |      | $ | 502,649  
|                                                                      |  |                         |           |      |   |          



See accompanying notes

6



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENTS OF CASH FLOWS (Continued)

(Amounts in thousands)

(Unaudited)



|                                                                  |  |                         |         |      |   |         
|----------------------------------------------------------------- |  | ----------------------- | ------- | ---- | - | --------
|                                                                  |  | Quarter Ended March 31,
|                                                                  |  | 2009                    |         | 2008
|SUPPLEMENTAL INFORMATION:                                         |  |                         |         |      |   |         
|Cash paid for interest, net of amounts capitalized                |  | $                       | 159,656 |      | $ | 164,289 
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Net cash paid (received) for income and other taxes               |  | $                       | 564     |      | $ | (526)   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Real estate acquisitions/dispositions/other:                      |  |                         |         |      |   |         
|Mortgage loans (assumed) by purchaser                             |  | $                       | (4,387) |      | $ | -       
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Amortization of deferred financing costs:                         |  |                         |         |      |   |         
|Investment in real estate, net                                    |  | $                       | (1,011) |      | $ | (471)   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Deferred financing costs, net                                     |  | $                       | 4,008   |      | $ | 2,632   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Amortization of discounts and premiums on debt:                   |  |                         |         |      |   |         
|Investment in real estate, net                                    |  | $                       | (4)     |      | $ | -       
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Mortgage notes payable                                            |  | $                       | (1,550) |      | $ | (1,574) 
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Notes, net                                                        |  | $                       | 3,260   |      | $ | 2,924   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Amortization of deferred settlements on derivative instruments:   |  |                         |         |      |   |         
|Other liabilities                                                 |  | $                       | (345)   |      | $ | (345)   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Accumulated other comprehensive loss                              |  | $                       | 1,493   |      | $ | 513     
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Unrealized (gain) loss on derivative instruments:                 |  |                         |         |      |   |         
|Other assets                                                      |  | $                       | (379)   |      | $ | (4,935) 
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Mortgage notes payable                                            |  | $                       | (1,186) |      | $ | 3,390   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Notes, net                                                        |  | $                       | (645)   |      | $ | 2,907   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Other liabilities                                                 |  | $                       | (450)   |      | $ | 7,786   
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Accumulated other comprehensive loss                              |  | $                       | 2,660   |      | $ | (9,148) 
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Proceeds from (payments on) settlement of derivative instruments: |  |                         |         |      |   |         
|Other assets                                                      |  | $                       | 449     |      | $ | (39)    
|                                                                  |  |                         |         |      |   |         
|                                                                  |  |                        
|Other liabilities                                                 |  | $                       | -       |      | $ | (13,217)
|                                                                  |  |                         |         |      |   |         



See accompanying notes

7



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENT OF CHANGES IN CAPITAL

(Amounts in thousands)

(Unaudited)



|                                                                                     |  |                                 |          
|------------------------------------------------------------------------------------ |  | ------------------------------- | ---------
|PARTNERS CAPITAL                                                                    |  | Quarter Ended    March 31, 2009
|                                                                                     | 
|PREFERENCE UNITS                                                                     |  |                                 |          
|Balance, beginning of year                                                           |  | $                               | 208,786  
|Conversion of 7.00% Series E Cumulative Convertible                                  |  |                                 | (13)     
|                                                                                     |  |                                 |          
|Balance, end of period                                                               |  | $                               | 208,773  
|                                                                                     |  |                                 |          
|                                                                                     | 
|PREFERENCE INTERESTS AND JUNIOR PREFERENCE UNITS                                     |  |                                 |          
|Balance, beginning of year and end of period                                         |  | $                               | 184      
|                                                                                     |  |                                 |          
|                                                                                     | 
|GENERAL PARTNER                                                                      |  |                                 |          
|Balance, beginning of year                                                           |  | $                               | 4,840,613
|OP Unit Issuance:                                                                    |  |                                 |          
|Conversion of Preference Units into OP Units held by General Partner                 |  |                                 | 13       
|Conversion of OP Units held by Limited Partners into OP Unitsheld by General Partner |  |                                 | 9,143    
|Exercise of EQR share options                                                        |  |                                 | 105      
|EQRs Employee Share Purchase Plan (ESPP)                                            |  |                                 | 2,787    
|Share-based employee compensation expense:                                           |  |                                 |          
|EQR performance shares                                                               |  |                                 | 26       
|EQR restricted shares/LTIP Units                                                     |  |                                 | 3,385    
|EQR share options                                                                    |  |                                 | 1,580    
|EQR ESPP discount                                                                    |  |                                 | 492      
|OP Units repurchased and retired                                                     |  |                                 | (1,124)  
|Offering costs                                                                       |  |                                 | (121)    
|Net income available to Units  General Partner                                      |  |                                 | 77,175   
|OP Units  General Partner distributions                                             |  |                                 | (132,065)
|Supplemental Executive Retirement Plan (SERP)                                        |  |                                 | 13,006   
|Acquisition of Noncontrolling Interests  Partially Owned Properties                 |  |                                 | (1,227)  
|Adjustment for Limited Partners ownership in Operating Partnership                   |  |                                 | (2,779)  
|                                                                                     |  |                                 |          
|Balance, end of period                                                               |  | $                               | 4,811,009
|                                                                                     |  |                                 |          
|                                                                                     | 
|LIMITED PARTNERS                                                                     |  |                                 |          
|Balance, beginning of year                                                           |  | $                               | 293,795  
|Issuance of LTIP Units                                                               |  |                                 | 78       
|Conversion of OP Units held by Limited Partners into                                 |  |                                 |          
|OP Units held by General Partner                                                     |  |                                 | (9,143)  
|Net income available to Units  Limited Partners                                     |  |                                 | 4,691    
|Units  Limited Partners distributions                                               |  |                                 | (7,868)  
|Adjustment for Limited Partners ownership in Operating Partnership                   |  |                                 | 2,779    
|                                                                                     |  |                                 |          
|Balance, end of period                                                               |  | $                               | 284,332  
|                                                                                     |  |                                 |          



See accompanying notes

8



---

ERP OPERATING LIMITED PARTNERSHIP

CONSOLIDATED STATEMENT OF CHANGES IN CAPITAL (Continued)

(Amounts in
thousands)

(Unaudited)



|                                                                  |  |                               |         
|----------------------------------------------------------------- |  | ----------------------------- | --------
|PARTNERS CAPITAL (Continued)                                     |  | Quarter Ended  March 31, 2009
|                                                                  | 
|ACCUMULATED OTHER COMPREHENSIVE LOSS                              |  |                               |         
|Balance, beginning of year                                        |  | $                             | (35,799)
|Accumulated other comprehensive income  derivative instruments:  |  |                               |         
|Unrealized holding gains arising during the period                |  |                               | 2,660   
|Losses reclassified into earnings from other comprehensive income |  |                               | 1,493   
|Other                                                             |  |                               | 449     
|Accumulated other comprehensive income  other instruments:       |  |                               |         
|Unrealized holding gains arising during the period                |  |                               | 1,908   
|                                                                  |  |                               |         
|Balance, end of period                                            |  | $                             | (29,289)
|                                                                  |  |                               |         
|                                                                  | 
|NONCONTROLLING INTERESTS                                          |  |                               |         
|                                                                  | 
|NONCONTROLLING INTERESTS  PARTIALLY OWNED PROPERTIES             |  |                               |         
|Balance, beginning of year                                        |  | $                             | 25,520  
|Net (loss) attributable to Noncontrolling Interests               |  |                               | (69)    
|Contributions by Noncontrolling Interests                         |  |                               | 522     
|Distributions to Noncontrolling Interests                         |  |                               | (471)   
|                                                                  |  |                               |         
|Balance, end of period                                            |  | $                             | 25,502  
|                                                                  |  |                               |         



See accompanying notes

9



---

ERP OPERATING LIMITED PARTNERSHIP

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)



|1. | Business
|-- | --------

ERP Operating Limited Partnership (ERPOP), an Illinois limited partnership, was formed in May 1993 to conduct the multifamily residential property business of Equity Residential (EQR). EQR, a Maryland real estate
investment trust (REIT) formed in March 1993, is an S&P 500 company focused on the acquisition, development and management of high quality apartment properties in top United States growth markets. EQR has elected to be taxed as a
REIT.

EQR is the general partner of, and as of March 31, 2009 owned an approximate 94.4% ownership interest in ERPOP.
EQR is structured as an umbrella partnership REIT (UPREIT) under which all property ownership and related business operations are conducted through ERPOP and its subsidiaries. References to the Operating Partnership include
ERPOP and those entities owned or controlled by it. References to the Company mean EQR and the Operating Partnership.

As of March 31, 2009, the Operating Partnership, directly or indirectly through investments in title holding entities, owned all or a portion of 537 properties in 23 states and the District of Columbia consisting of 146,232 units. The
ownership breakdown includes (table does not include various uncompleted development properties):



|                               |  |            |  |        
|------------------------------ |  | ---------- |  | -------
|                               |  | Properties |  | Units  
|                               |  |           
|Wholly Owned Properties        |  | 469        |  | 126,563
|Partially Owned Properties:    |  |            |  |        
|Consolidated                   |  | 26         |  | 5,406  
|Unconsolidated                 |  | 40         |  | 9,560  
|Military Housing (Fee Managed) |  | 2          |  | 4,703  
|                               |  |            |  |        
|                               |  | 537        |  | 146,232



|2. | Summary of Significant Accounting Policies
|-- | ------------------------------------------

Basis of Presentation

The accompanying unaudited condensed consolidated financial
statements have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not
include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) and
certain reclassifications considered necessary for a fair presentation have been included. Certain reclassifications have been made to the prior period financial statements in order to conform to the current year presentation. Operating results for
the quarter ended March 31, 2009 are not necessarily indicative of the results that may be expected for the year ending December 31, 2009.

In preparation of the Operating Partnerships financial statements in conformity with accounting principles generally accepted in the United States, management makes estimates and assumptions that affect the
reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ
from these estimates.

The balance sheet at December 31, 2008 has been derived from the audited financial statements
at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

For further information, including definitions of capitalized terms not defined herein, refer to the consolidated financial statements
and footnotes thereto included in the Operating Partnerships annual report on Form 10-K for the year ended December 31, 2008.



10



---

Income and Other Taxes

The Operating Partnership generally is not liable for federal income taxes as the partners recognize their proportionate share of the Operating Partnerships income or loss in their tax
returns; therefore no provision for federal income taxes has been made at the ERPOP level. Historically, the Operating Partnership has generally only incurred certain state and local income, excise and franchise taxes. The Operating Partnership has
elected Taxable REIT Subsidiary (TRS) status for certain of its corporate subsidiaries, primarily those entities engaged in condominium conversion and corporate housing activities and as a result, these entities will incur both federal
and state income taxes on any taxable income of such entities.

Deferred tax assets and liabilities are recognized for
future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. These assets and liabilities are measured using enacted tax rates for which the
temporary differences are expected to be recovered or settled. The effect of deferred tax assets and liabilities are recognized in earnings in the period enacted. The Operating Partnerships deferred tax assets are generally the result of tax
affected amortization of goodwill, differing depreciable lives on capitalized assets and the timing of expense recognition for certain accrued liabilities. As of March 31, 2009, the Operating Partnership has recorded a deferred tax asset of
approximately $38.5 million, which was fully offset by a valuation allowance due to the uncertainty in forecasting future TRS taxable income.

Other

In December 2008, the FASB issued FASB Staff Position (FSP) FAS 140-4 and FASB
Interpretation (FIN) 46(R)-8, Disclosures by Public Entities (Enterprises) about Transfers of Financial Assets and Interests in Variable Interest Entities (FAS 140-4 and FIN 46(R)-8). FAS 140-4 and FIN 46(R)-8 amends
SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities, to require public companies to provide additional disclosures about transfers of financial assets. It also amends FIN
No. 46(R) to require public enterprises, including sponsors that have a variable interest in a Variable Interest Entity (VIE), to provide additional disclosures about their involvement with VIEs. FIN No. 46 requires the
Operating Partnership to consolidate the assets, liabilities and results of operations of the activities of its VIEs, which for the Operating Partnership includes only its development partnerships since the Operating Partnership provides
substantially all of the capital for these ventures (other than third party mortgage debt, if any). The Operating Partnership does not have any unconsolidated FIN No. 46 assets. FAS 140-4 and FIN 46(R)-8 were effective for the Operating
Partnership for the year ended December 31, 2008 and affected disclosures only. The adoption of this standard has no impact on the Operating Partnerships consolidated results of operations or financial position.

The Operating Partnership adopted the disclosure provisions of SFAS No. 150 and FSP No. FAS 150-3, Accounting for Certain
Financial Instruments with Characteristics of both Liabilities and Equity, effective December 31, 2003. SFAS No. 150 and FSP No. FAS 150-3 require the Operating Partnership to make certain disclosures regarding noncontrolling interests
that are classified as equity in the financial statements of a subsidiary but would be classified as a liability in the parents financial statements under SFAS No. 150 (e.g., noncontrolling interests in consolidated limited-life
subsidiaries). The Operating Partnership is presently the controlling partner in various consolidated partnerships consisting of 26 properties and 5,406 units and various uncompleted development properties having a noncontrolling interest book value
of $25.5 million at March 31, 2009. Some of these partnerships contain provisions that require the partnerships to be liquidated through the sale of its assets upon reaching a date specified in each respective partnership agreement. The
Operating Partnership, as controlling partner, has an obligation to cause the property owning partnerships to distribute proceeds of liquidation to the Noncontrolling Interests (see definition below) in these Partially Owned Properties only to the
extent that the net proceeds received by the partnerships from the sale of its assets warrant a distribution based on the partnership agreements. As of March 31, 2009, the Operating Partnership estimates the value of Noncontrolling Interest
distributions would have been approximately $62.6 million (Settlement Value) had the partnerships been liquidated. This Settlement Value is based on estimated third party consideration realized by the partnerships upon disposition of the
Partially Owned Properties and is net of all other assets and liabilities, including yield maintenance on the mortgages encumbering the properties, that would have been due on March 31, 2009 had those mortgages been prepaid. Due to, among other
things, the inherent uncertainty in the sale of real estate assets, the amount of any potential distribution to the Noncontrolling Interests in the Operating Partnerships Partially Owned Properties is subject to change. To the extent that the
partnerships underlying assets are worth less than the underlying liabilities, the Operating Partnership has no obligation to remit any consideration to the Noncontrolling Interests in Partially Owned Properties.



11



---

In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements.
SFAS No. 157 defines fair value, establishes a framework for measuring fair value in accordance with accounting principles generally accepted in the United States and expands disclosure about fair value measurements. The Operating Partnership
adopted SFAS No. 157 as required effective January 1, 2008. The adoption of SFAS No. 157 did not have a material effect on the consolidated results of operations or financial position. See Note 11 for further discussion.

In February 2008, the FASB issued FSP No. FAS 157-2, Effective Date of FASB Statement No. 157 (FAS 157-2),
which delays the effective date of SFAS No. 157 for all nonfinancial assets and liabilities, except those that are recognized or disclosed at fair value in the financial statements on a recurring basis (at least annually). FAS 157-2 partially
defers the effective date of SFAS No. 157 to fiscal years beginning after November 15, 2008. The Operating Partnership adopted FAS 157-2 as required effective January 1, 2009. The adoption of FAS 157-2 did not have a material effect
on the consolidated results of operations or financial position.

In February 2007, the FASB issued SFAS No. 159,
The Fair Value Option for Financial Assets and Financial Liabilities. SFAS No. 159 provides a Fair Value Option under which a company may irrevocably elect fair value as the initial and subsequent measurement attribute for
certain financial instruments. The Fair Value Option will be available on a contract-by-contract basis with changes in fair value recognized in earnings as those changes occur. SFAS No. 159 is effective beginning January 1, 2008, but the
Operating Partnership has decided not to adopt this optional standard.

In April 2009, the FASB issued FSP No. FAS 107-1
and APB 28-1, Interim Disclosures about Fair Value of Financial Instruments (FAS 107-1 and APB 28-1), which requires disclosures about fair value of financial instruments for interim reporting periods for publicly traded companies
as well as in annual financial statements. This FSP also amends APB Opinion No. 28, Interim Financial Reporting, to require those disclosures in summarized financial information at interim reporting periods and is effective for the
Operating Partnership for the quarterly period ending June 30, 2009. The Operating Partnership does not expect the adoption of FAS 107-1 and APB 28-1 to have a material effect on the consolidated results of operations or financial position.

In December 2007, the FASB issued SFAS No. 141(R), Business Combinations. SFAS No. 141(R) significantly
changes the accounting for business combinations. Under SFAS No. 141(R), an acquiring entity is required to recognize all the assets acquired and liabilities assumed in a transaction at the acquisition-date fair value with limited exceptions.
SFAS No. 141(R) changes the accounting treatment for certain specific acquisition related items including: (1) expensing acquisition related costs as incurred (amounts are included in the other expenses line item in the consolidated
statements of operations); (2) valuing noncontrolling interests at fair value at the acquisition date; and (3) expensing restructuring costs associated with an acquired business. SFAS No. 141(R) also includes a substantial number of
new disclosure requirements. SFAS No. 141(R) has been applied prospectively to business combinations for which the acquisition date is on or after January 1, 2009. Due to the current decline in the Operating Partnerships acquisition
activities, the initial adoption of SFAS No. 141(R) has not had a material effect on the consolidated results of operations or financial position.

In April 2009, the FASB issued FSP No. FAS 141(R)-1, Accounting for Assets Acquired and Liabilities Assumed in a Business Combination That Arise from Contingencies (FAS 141(R)-1), which amends and
clarifies SFAS No. 141(R) to address application issues on initial recognition and measurement, subsequent measurement and accounting, and disclosure of assets and liabilities arising from contingencies in a business combination. FAS 141(R)-1
has been applied prospectively to business combinations for which the acquisition date is on or after January 1, 2009. Due to the current decline in the Operating Partnerships acquisition activities, the initial adoption of FAS 141(R)-1
has not had a material effect on the consolidated results of operations or financial position.

In December 2007, the FASB
issued SFAS No. 160, Noncontrolling Interests in Consolidated Financial Statements. SFAS No. 160 establishes new accounting and reporting standards for the Noncontrolling Interest in a subsidiary and for the
deconsolidation of a subsidiary. It clarifies that a noncontrolling interest in a subsidiary (minority interest) is in most cases an ownership interest in the consolidated entity that should be reported as equity in the consolidated financial
statements and separate from the parent companys equity. Among other requirements, this statement requires consolidated net income to be reported at amounts that include the amounts attributable to both the parent and the noncontrolling
interest. It also requires disclosure, on the face of the Consolidated Statements of Operations, of the amounts of consolidated net income attributable to the parent and to the noncontrolling interest. The Operating Partnership adopted SFAS
No. 160 as required effective January 1, 2009. Other than modifications to presentation, the adoption of SFAS No. 160 did not have a material effect on the consolidated results of operations or financial position. See Note 3 for
further discussion.



12



---

In March 2008, the FASB issued SFAS No. 161, Disclosures about Derivative
Instruments and Hedging Activities  an amendment of FASB Statement No. 133. SFAS No. 161 is intended to improve financial standards for derivative instruments and hedging activities by requiring enhanced disclosures to enable
investors to better understand their effects on an entitys financial position, financial performance and cash flows. Among other requirements, entities are required to provide enhanced disclosures about: (1) how and why an entity uses
derivative instruments; (2) how derivative instruments and related hedged items are accounted for under SFAS No. 133 and its related interpretations; and (3) how derivative instruments and related hedged items affect an entitys
financial position, financial performance and cash flows. The Operating Partnership adopted SFAS No. 161 as required effective January 1, 2009. Other than the enhanced disclosure requirements, the adoption of SFAS No. 161 did not have
a material effect on the consolidated financial statements. See Note 11 for further discussion.

In May 2008, the
FASB issued FSP No. APB 14-1, Accounting for Convertible Debt Instruments That May Be Settled in Cash upon Conversion (Including Partial Cash Settlement) (APB 14-1). APB 14-1 requires the issuer of certain convertible debt
instruments that may be settled in cash on conversion to separately account for the liability and equity components of the instrument in a manner that reflects the issuers nonconvertible debt borrowing rate. The Operating Partnership adopted
APB 14-1, which is applied retrospectively, as required effective January 1, 2009. The adoption of APB 14-1 affects the accounting for the Operating Partnerships $650.0 million ($531.1 million outstanding at March 31, 2009) 3.85%
convertible unsecured notes that were issued in August 2006 and mature in August 2026. The amount of the conversion option as of the date of issuance calculated by the Operating Partnership was $44.3 million and is being amortized to interest
expense over the expected life of the convertible notes (through the first put date on August 18, 2011). Total amortization of the cash discount and conversion option discount on the unsecured notes resulted in a reduction to earnings of
approximately $2.9 million for the first quarter of 2009 and is anticipated to result in a reduction to earnings of approximately $9.3 million during the full year of 2009 assuming the Operating Partnership does not repurchase any additional amounts
of this debt. As a result of the adoption of APB 14-1, the Operating Partnership decreased the January 1, 2009 balance of retained earnings by $27.0 million, decreased the January 1, 2009 balance of notes by $17.3 million and increased the
January 1, 2009 balance of paid in capital by $44.3 million. Due to the required retrospective application, APB 14-1 resulted in a reduction to earnings of approximately $2.5 million or $0.01 per share for the quarter ended March 31, 2008.



|3. | Capital
|-- | -------

The following tables present the changes in the Operating Partnerships issued and outstanding Units (which includes OP Units and Long-Term Incentive Plan (LTIP) Units) and in the limited partners Units
for the quarter ended March 31, 2009:



13



---

|                                                                  |  |             
|----------------------------------------------------------------- |  | ------------
|                                                                  |  | 2009        
|General and Limited Partner Units                                 |  |             
|General and Limited Partner Units outstanding at January 1,       |  | 289,466,537 
|                                                                  | 
|Issued to General Partner:                                        |  |             
|Conversion of Series E Preference Units                           |  | 612         
|Exercise of EQR options                                           |  | 5,246       
|Employee Share Purchase Plan                                      |  | 196,147     
|Restricted EQR share grants, net                                  |  | 351,065     
|                                                                  | 
|Issued to Limited Partners:                                       |  |             
|LTIP Unit issuance                                                |  | 155,189     
|                                                                  | 
|OP Units Other:                                                   |  |             
|Repurchased and retired                                           |  | (47,450)    
|                                                                  |  |             
|General and Limited Partner Units outstanding at March 31,        |  | 290,127,346 
|                                                                  |  |             
|                                                                  | 
|Limited Partner Units                                             |  |             
|Limited Partner Units outstanding at January 1,                   |  | 16,679,777  
|Limited Partner LTIP Unit issuance                                |  | 155,189     
|Conversion of Limited Partner OP Units to EQR Common Shares       |  | (551,590)   
|                                                                  |  |             
|Limited Partner Units outstanding at March 31,                    |  | 16,283,376  
|                                                                  |  |             
|Limited Partner Units Ownership Interest in Operating Partnership |  | 5.6%        
|                                                                  | 
|Limited Partner LTIP Units Issued:                                |  |             
|Issuance  per unit                                               |  | $0.50       
|Issuance  contribution valuation                                 |  | $0.1 million

During the quarter ended March 31, 2009, the Company repurchased 47,450 of
its Common Shares at an average price of $23.69 per share for total consideration of $1.1 million. These shares were retired subsequent to the repurchases. Concurrent with these transactions, the Operating Partnership repurchased and retired 47,450
OP Units previously issued to EQR. All of the shares repurchased during the quarter ended March 31, 2009 were repurchased from employees at the then current market prices to cover the minimum statutory tax withholding obligations related to the
vesting of employees restricted shares. EQR has authorization to repurchase an additional $466.5 million of its shares as of March 31, 2009.

The Limited Partners of the Operating Partnership as of March 31, 2009 include various individuals and entities that contributed their properties to the Operating Partnership in exchange for OP Units, as well as
the equity positions of the LTIP Units. Subject to certain exceptions (including the book-up requirements of LTIP Units), the Limited Partners may exchange their Units with EQR for EQR Common Shares on a one-for-one basis. The Operating
Partnership has the right but not the obligation to make a cash payment to any holder of OP Units requesting an exchange from EQR at the market price of EQRs Common Shares. However, no aspect of an exchange requires a cash settlement by the
Operating Partnership under any circumstances.

EQR contributes all net proceeds from its various equity offerings
(including proceeds from exercise of options for EQR Common Shares) to the Operating Partnership. In return for those contributions, EQR receives a number of OP Units in ERPOP equal to the number of Common Shares it has issued in the equity offering
(or in the case of a preferred equity offering, a number of preference units in ERPOP equal in number and having the same terms as the preferred shares issued in the equity offering).

The following table presents the Operating Partnerships issued and outstanding Preference Units as of March 31,
2009 and December 31, 2008:



14



---

|                                                                                                                                                                                               |  |                        |  |                    |  |                            |  |                      |         |                  |   |        
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------- |  | ------------------ |  | -------------------------- |  | -------------------- | ------- | ---------------- | - | -------
|                                                                                                                                                                                               |  |                        |  |                    |  |                            |  | Amounts in thousands
|                                                                                                                                                                                               |  | RedemptionDate (1) (2) |  | ConversionRate (2) |  | AnnualDividend perUnit (3) |  | March 31,2009        |         | December 31,2008
|Preference Units:                                                                                                                                                                              |  |                        |  |                    |  |                            |  |                      |         |                  |   |        
|                                                                                                                                                                                               |  |                        |  |                    | 
|7.00% Series E Cumulative Convertible Preference Units; liquidation value $25 per unit; 328,466 and 329,016 units issued and
outstanding at March 31, 2009 and December 31, 2008, respectively |  | 11/1/98                |  | 1.1128             |  | $1.75                      |  | $                    | 8,212   |                  | $ | 8,225  
|                                                                                                                                                                                               |  |                        |  |                    | 
|7.00% Series H Cumulative Convertible Preference Units; liquidation value $25 per unit; 22,459 units issued and outstanding at
March 31, 2009 and December 31, 2008                            |  | 6/30/98                |  | 1.4480             |  | $1.75                      |  |                      | 561     |                  |   | 561    
|                                                                                                                                                                                               |  |                        |  |                    | 
|8.29% Series K Cumulative Redeemable Preference Units; liquidation value $50 per unit; 1,000,000 units issued and outstanding
at March 31, 2009 and December 31, 2008                          |  | 12/10/26               |  | N/A                |  | $4.145                     |  |                      | 50,000  |                  |   | 50,000 
|                                                                                                                                                                                               |  |                        |  |                    | 
|6.48% Series N Cumulative Redeemable Preference Units; liquidation value $250 per unit; 600,000 units issued and outstanding
at March 31, 2009 and December 31, 2008 (4)                       |  | 6/19/08                |  | N/A                |  | $16.20                     |  |                      | 150,000 |                  |   | 150,000
|                                                                                                                                                                                               |  |                        |  |                    |  |                            |  |                      |         |                  |   |        
|                                                                                                                                                                                               |  |                        |  |                    |  |                            |  | $                    | 208,773 |                  | $ | 208,786
|                                                                                                                                                                                               |  |                        |  |                    |  |                            |  |                      |         |                  |   |        



|(1) | On or after the redemption date, redeemable preference units (Series K and N) may be redeemed for cash at the option of the Operating Partnership, in whole or in
part, at a redemption price equal to the liquidation price per unit, plus accrued and unpaid distributions, if any, in conjunction with the concurrent redemption of the corresponding EQR Preferred Shares.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | On or after the redemption date, convertible preference units (Series E & H) may be redeemed under certain circumstances at the option of the Operating
Partnership for cash (in the case of Series E) or OP Units (in the case of Series H), in whole or in part, at various redemption prices per unit based upon the contractual conversion rate, plus accrued and unpaid distributions, if any, in
conjunction with the concurrent redemption/conversion of the corresponding EQR Preferred Shares.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | Dividends on all series of Preference Units are payable quarterly at various pay dates. The dividend listed for Series N is a Preference Unit rate and the
equivalent depositary unit annual dividend is $1.62 per unit.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(4) | The Series N Preference Units have a corresponding depositary unit that consists of ten times the number of units and one-tenth the liquidation value and
dividend per unit.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The following table presents the Operating Partnerships issued and outstanding
Junior Convertible Preference Units (the Junior Preference Units) as of March 31, 2009 and December 31, 2008:



|                                                                                                                                                         |  |                      |  |                      |  |                              |  |                      |     |                    |   |    
|-------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------- |  | -------------------- |  | ---------------------------- |  | -------------------- | --- | ------------------ | - | ---
|                                                                                                                                                         |  |                      |  |                      |  |                              |  | Amounts in thousands
|                                                                                                                                                         |  | Redemption  Date (2) |  | Conversion  Rate (2) |  | AnnualDividend  per Unit (1) |  | March 31,  2009      |     | December 31,  2008
|Junior Preference Units:                                                                                                                                 |  |                      |  |                      |  |                              |  |                      |     |                    |   |    
|                                                                                                                                                         |  |                      |  |                      | 
|Series B Junior Convertible Preference Units; liquidation value $25 per unit; 7,367 units issued and outstanding at
March 31, 2009 and December 31, 2008 |  | 7/29/09              |  | 1.020408             |  | $2.00                        |  | $                    | 184 |                    | $ | 184
|                                                                                                                                                         |  |                      |  |                      |  |                              |  |                      |     |                    |   |    
|                                                                                                                                                         |  |                      |  |                      |  |                              |  | $                    | 184 |                    | $ | 184
|                                                                                                                                                         |  |                      |  |                      |  |                              |  |                      |     |                    |   |    



| | (1) | Dividends on the Junior Preference Units are payable quarterly at various pay dates.
| | --- | ------------------------------------------------------------------------------------



| | (2) | On or after the tenth anniversary of the issuance (the Redemption Date), the Series B Junior Preference Units may be converted into OP Units at the
option of the Operating Partnership based on the contractual conversion rate. Prior to the Redemption Date, the holders may elect to convert the Series B Junior Preference Units to OP Units under certain circumstances based on the contractual
conversion rate. The contractual rate is based upon a ratio dependent upon the closing price of EQRs Common Shares.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



15



---

|4. | Real Estate
|-- | -----------

The following table summarizes the carrying amounts for the Operating Partnerships investment in real estate (at cost) as of March 31, 2009 and December 31, 2008 (amounts in thousands):



|                                  |  |               |             |                  |   |            
|--------------------------------- |  | ------------- | ----------- | ---------------- | - | -----------
|                                  |  | March 31,2009 |             | December 31,2008
|                                  |  |              
|Land                              |  | $             | 3,675,048   |                  | $ | 3,671,299  
|Depreciable property:             |  |               |             |                  |   |            
|Buildings and improvements        |  |               | 12,913,124  |                  |   | 12,836,310 
|Furniture, fixtures and equipment |  |               | 1,089,593   |                  |   | 1,072,284  
|Projects under development:       |  |               |             |                  |   |            
|Land                              |  |               | 159,158     |                  |   | 175,355    
|Construction-in-progress          |  |               | 603,483     |                  |   | 680,118    
|Land held for development:        |  |               |             |                  |   |            
|Land                              |  |               | 205,190     |                  |   | 205,757    
|Construction-in-progress          |  |               | 53,733      |                  |   | 49,116     
|                                  |  |               |             |                  |   |            
|Investment in real estate         |  |               | 18,699,329  |                  |   | 18,690,239 
|Accumulated depreciation          |  |               | (3,674,402) |                  |   | (3,561,300)
|                                  |  |               |             |                  |   |            
|Investment in real estate, net    |  | $             | 15,024,927  |                  | $ | 15,128,939 
|                                  |  |               |             |                  |   |            

During the quarter ended March 31, 2009, the Operating Partnership acquired
all of its partners interest in three partially owned properties consisting of 833 units for $2.8 million.

During
the quarter ended March 31, 2009, the Operating Partnership disposed of the following to unaffiliated parties (sales price in thousands):



|                                     |  |            |  |       |  |             |        
|------------------------------------ |  | ---------- |  | ----- |  | ----------- | -------
|                                     |  | Properties |  | Units |  | Sales Price
|                                     |  |            | 
|Rental Properties:                   |  |            |  |       |  |             |        
|Wholly Owned                         |  | 11         |  | 1,531 |  | $           | 139,573
|Partially Owned  Unconsolidated (1) |  | 1          |  | 216   |  |             | 20,700 
|Condominium Conversion Properties    |  | 1          |  | 1     |  |             | 146    
|                                     |  |            |  |       |  |             |        
|Total                                |  | 13         |  | 1,748 |  | $           | 160,419
|                                     |  |            |  |       |  |             |        



| | (1) | The Operating Partnership owned a 25% interest in this unconsolidated rental property. Sales price listed is the gross sales price.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------

The Operating Partnership recognized a net gain on sales of discontinued operations of approximately $61.9 million and a net gain on
sales of unconsolidated entities of approximately $2.8 million on the above sales.



|5. | Commitments to Acquire/Dispose of Real Estate
|-- | ---------------------------------------------

As of April 30, 2009, the Operating Partnership had entered into an agreement to acquire one land parcel for $23.5 million.

As of April 30, 2009, the Operating Partnership had entered into separate agreements to dispose of 17 properties consisting of 3,366
units for $287.3 million.

The closings of these pending transactions are subject to certain conditions and restrictions,
therefore, there can be no assurance that these transactions will be consummated or that the final terms will not differ in material respects from those summarized in the preceding paragraphs.



|6. | Investments in Partially Owned Entities
|-- | ---------------------------------------

The Operating Partnership has co-invested in various properties with unrelated third parties which are either consolidated or accounted for under the equity method of accounting (unconsolidated). The following table
summarizes the Operating Partnerships investments in partially owned entities as of March 31, 2009 (amounts in thousands except for



16



---

project and unit amounts):



|                         |  |                                   |         |                               |   |                          |  |       |         |       |   |                                |  |   |           |  |   |        
|------------------------ |  | --------------------------------- | ------- | ----------------------------- | - | ------------------------ |  | ----- | ------- | ----- | - | ------------------------------ |  | - | --------- |  | - | -------
|                         |  | Consolidated                      |         | Unconsolidated               
|                         |  | Development Projects              |         |                               |   |                          |  |      
|                         |  | Held forand/or Under  Development |         | Completed,Not  Stabilized (4) |   | Completed  andStabilized |  | Other |         | Total |   | InstitutionalJointVentures
(5)
|                         |  |                                   |         |                               |   |                         
|Total projects (1)       |  |                                   | -       |                               |   | 2                        |  |       | 3       |       |   | 21                             |  |   | 26        |  |   | 40     
|                         |  |                                   |         |                               |   |                          |  |       |         |       |   |                                |  |   |           |  |   |        
|                         |  |                                   |         |                               |   |                         
|Total units (1)          |  |                                   | -       |                               |   | 760                      |  |       | 704     |       |   | 3,942                          |  |   | 5,406     |  |   | 9,560  
|                         |  |                                   |         |                               |   |                          |  |       |         |       |   |                                |  |   |           |  |   |        
|                         |  |                                   |         |                               |   |                         
|Debt  Secured (2):      |  |                                   |         |                               |   |                          |  |       |         |       |   |                                |  |   |           |  |   |        
|EQR Ownership (3)        |  | $                                 | 400,041 |                               | $ | 220,779                  |  | $     | 108,466 |       | $ | 215,820                        |  | $ | 945,106   |  | $ | 121,200
|Noncontrolling Ownership |  |                                   | -       |                               |   | -                        |  |       | -       |       |   | 86,310                         |  |   | 86,310    |  |   | 363,600
|                         |  |                                   |         |                               |   |                          |  |       |         |       |   |                                |  |   |           |  |   |        
|                         |  |                                   |         |                               |   |                         
|Total (at 100%)          |  | $                                 | 400,041 |                               | $ | 220,779                  |  | $     | 108,466 |       | $ | 302,130                        |  | $ | 1,031,416 |  | $ | 484,800
|                         |  |                                   |         |                               |   |                          |  |       |         |       |   |                                |  |   |           |  |   |        



| | (1) | Project and unit counts exclude all uncompleted development projects until those projects are completed.
| | --- | --------------------------------------------------------------------------------------------------------

| | (2) | All debt is non-recourse to the Operating Partnership with the exception of $125.8 million in mortgage debt on various development projects.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------

| | (3) | Represents the Operating Partnerships current economic ownership interest.
| | --- | ---------------------------------------------------------------------------

| | (4) | Projects included here are substantially complete. However, they may still require additional exterior and interior work for all units to be available for
leasing.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (5) | Mortgage debt is also partially collateralized by $52.9 million in unconsolidated restricted cash set aside from the net proceeds of property sales.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------



|7. | Deposits  Restricted
|-- | ---------------------

The following table presents the Operating Partnerships restricted deposits as of March 31, 2009 and December 31, 2008 (amounts in thousands):



|                                       |  |               |         |                  |   |        
|-------------------------------------- |  | ------------- | ------- | ---------------- | - | -------
|                                       |  | March 31,2009 |         | December 31,2008
|                                       |  |              
|Taxdeferred (1031) exchange proceeds  |  | $             | 43,020  |                  | $ | -      
|Earnest money on pending acquisitions  |  |               | 1,200   |                  |   | 1,200  
|Restricted deposits on debt (1)        |  |               | 89,052  |                  |   | 96,229 
|Resident security and utility deposits |  |               | 40,616  |                  |   | 41,478 
|Other                                  |  |               | 13,288  |                  |   | 13,465 
|                                       |  |               |         |                  |   |        
|                                       |  |              
|Totals                                 |  | $             | 187,176 |                  | $ | 152,372
|                                       |  |               |         |                  |   |        



| | (1) | Primarily represents amounts held in escrow by the lender and released as draw requests are made on fully funded development mortgage loans.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------



|8. | Mortgage Notes Payable
|-- | ----------------------

As of March 31, 2009, the Operating Partnership had outstanding mortgage debt of approximately $4.9 billion.

During the quarter ended March 31, 2009, the Operating Partnership:



| | ¡ |  | Repaid $146.2 million of mortgage loans;
| | - |  | ----------------------------------------

| | ¡ |  | Obtained $57.7 million of new mortgage loans primarily on development properties; and
| | - |  | -------------------------------------------------------------------------------------

| | ¡ |  | Was released from $4.4 million of mortgage debt assumed by the purchaser on a disposed property.
| | - |  | ------------------------------------------------------------------------------------------------

As of March 31, 2009, scheduled maturities for the Operating Partnerships outstanding mortgage indebtedness were at various
dates through September 1, 2048. At March 31, 2009, the interest rate range on the Operating Partnerships mortgage debt was 0.25% to 12.465%. During the quarter ended March 31, 2009, the weighted average interest rate on the
Operating Partnerships mortgage debt was 4.84%.



17



---

|9. | Notes
|-- | -----

As
of March 31, 2009, the Operating Partnership had outstanding unsecured notes of approximately $5.1 billion.

During
the quarter ended March 31, 2009, the Operating Partnership repurchased at par $105.2 million of its 4.75% fixed rate public notes due June 15, 2009 and $185.2 million of its 6.95% fixed rate public notes due March 2, 2011 pursuant to
a cash tender offer announced on January 16, 2009. The Operating Partnership wrote-off approximately $0.4 million of unamortized deferred financing costs and approximately $1.1 million of unamortized discounts on notes payable in connection
with these repurchases.

During the quarter ended March 31, 2009, the Operating Partnership repurchased $17.5 million
of its 3.85% convertible fixed rate public notes due August 15, 2026 at a discount to par of approximately 11.6%. The Operating Partnership recognized a gain on early debt extinguishment of $2.0 million and wrote-off approximately $0.1 million
of unamortized deferred financing costs and approximately $0.8 million of unamortized discounts on notes payable in connection with these repurchases.

As of March 31, 2009, scheduled maturities for the Operating Partnerships outstanding notes were at various dates through 2029. At March 31, 2009, the interest rate range on the Operating
Partnerships notes was 0.63% to 7.57%. During the quarter ended March 31, 2009, the weighted average interest rate on the Operating Partnerships notes was 5.42%.



|10. | Lines of Credit
|--- | ---------------

The Operating Partnership has a $1.5 billion unsecured revolving credit facility maturing on February 28, 2012, with the ability to increase available borrowings by an additional $500.0 million by adding additional banks to the
facility or obtaining the agreement of existing banks to increase their commitments. Advances under the credit facility bear interest at variable rates based upon LIBOR at various interest periods plus a spread (currently 0.5%) dependent upon the
Operating Partnerships credit rating or based on bids received from the lending group. EQR has guaranteed the Operating Partnerships credit facility up to the maximum amount and for the full term of the facility.

During the year ended December 31, 2008, one of the providers of the Operating Partnerships unsecured revolving credit
facility declared bankruptcy. Under the existing terms of the credit facility, the providers share is up to $75.0 million of potential borrowings. As a result, the Operating Partnerships borrowing capacity under the unsecured revolving
credit facility has in essence been permanently reduced to $1.425 billion of potential borrowings. The obligation to fund by all of the other providers has not changed.

As of March 31, 2009, the amount available on the credit facility was $1.31 billion (net of $115.2 million which was restricted/dedicated to support letters of credit and net of the $75.0
million discussed above). The Operating Partnership did not draw on its revolving credit facility at any time during the quarter ended March 31, 2009.



|11. | Derivative and Other Fair Value Instruments
|--- | -------------------------------------------

In the normal course of business, the Operating Partnership is exposed to the effect of interest rate changes. The Operating Partnership seeks to limit these risks by following established risk
management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments.

The
following table summarizes the Operating Partnerships consolidated derivative instruments at March 31, 2009 (dollar amounts are in thousands):



|                          |  |                          |         |                                             |   |                                    |  |   |        
|------------------------- |  | ------------------------ | ------- | ------------------------------------------- | - | ---------------------------------- |  | - | -------
|                          |  | Fair Value    Hedges (1) |         | Forward Starting    Swaps/TreasuryLocks (2) |   | Development    Cash FlowHedges (3)
|                          |  |                          |        
|Current Notional Balance  |  | $                        | 335,693 |                                             | $ | 250,000                            |  | $ | 230,955
|Lowest Possible Notional  |  | $                        | 335,693 |                                             | $ | 250,000                            |  | $ | 46,753 
|Highest Possible Notional |  | $                        | 337,694 |                                             | $ | 250,000                            |  | $ | 320,061
|Lowest Interest Rate      |  |                          | 3.245%  |                                             |   | 2.575%                             |  |   | 4.059% 
|Highest Interest Rate     |  |                          | 4.800%  |                                             |   | 2.610%                             |  |   | 6.000% 
|Earliest Maturity Date    |  |                          | 2009    |                                             |   | 2009                               |  |   | 2009   
|Latest Maturity Date      |  |                          | 2012    |                                             |   | 2009                               |  |   | 2011   



18



---

|(1) | Fair Value Hedges  Converts outstanding fixed rate debt to a floating interest rate.
|--- | -------------------------------------------------------------------------------------

|(2) | Forward Starting Swaps/Treasury Locks  Designed to partially fix the interest rate in advance of a planned future debt issuance.
|--- | ---------------------------------------------------------------------------------------------------------------------------------

|(3) | Development Cash Flow Hedges  Converts outstanding floating rate debt to a fixed interest rate.
|--- | ------------------------------------------------------------------------------------------------

The following table provides the location of the Operating Partnerships derivative instruments within the accompanying Consolidated
Balance Sheets and their fair market values as of March 31, 2009 (amounts in thousands):



|                                               |  |                         |  |                       |       |                         |                   |            |   |        
|---------------------------------------------- |  | ----------------------- |  | --------------------- | ----- | ----------------------- | ----------------- | ---------- | - | -------
|                                               |  | Asset Derivatives       |  | Liability Derivatives
|                                               |  | Balance Sheet  Location |  | Fair Value            |       | Balance Sheet  Location |                   | Fair Value
|                                               |  |                         |  |                      
|Derivatives designated as hedging instruments: |  |                         |  |                       |       |                         |                   |            |   |        
|Interest Rate Contracts:                       |  |                         |  |                       |       |                         |                   |            |   |        
|Fair Value Hedges                              |  | Other assets            |  | $                     | 4,522 |                         | Other liabilities |            | $ | -      
|Forward Starting Swaps/Treasury Locks          |  | Other assets            |  |                       | 2,212 |                         | Other liabilities |            |   | -      
|Development Cash Flow Hedges                   |  | Other assets            |  |                       | 4     |                         | Other liabilities |            |   | (6,377)
|                                               |  |                         |  |                       |       |                         |                   |            |   |        
|Total                                          |  |                         |  | $                     | 6,738 |                         |                   |            | $ | (6,377)
|                                               |  |                         |  |                       |       |                         |                   |            |   |        

The following table provides a summary of the effect of fair value hedges on the
Operating Partnerships accompanying Consolidated Statements of Operations for the quarter ended March 31, 2009 (amounts in thousands):



|                                               |  |                                                          |  |                                                        |         |             |                 |                                                    |                  |                                                         |   |      
|---------------------------------------------- |  | -------------------------------------------------------- |  | ------------------------------------------------------ | ------- | ----------- | --------------- | -------------------------------------------------- | ---------------- | ------------------------------------------------------- | - | -----
|Type of Fair Value Hedge                       |  | Location of Gain/(Loss)Recognized in Incomeon Derivative |  | Amount of Gain/(Loss)Recognized in Incomeon Derivative |         | Hedged Item |                 | Income StatementLocation of HedgedItem Gain/(Loss) |                  | Amount of Gain/(Loss)Recognized in Incomeon Hedged Item
|                                               |  |                                                          |  |                                                        |        
|Derivatives designated as hedging instruments: |  |                                                          |  |                                                        |         |             |                 |                                                    |                  |                                                         |   |      
|Interest Rate Contracts:                       |  |                                                          |  |                                                        |         |             |                 |                                                    |                  |                                                         |   |      
|Interest Rate Swaps                            |  | Interest expense                                         |  | $                                                      | (1,831) |             | Fixed rate debt |                                                    | Interest expense |                                                         | $ | 1,831
|                                               |  |                                                          |  |                                                        |         |             |                 |                                                    |                  |                                                         |   |      
|Total                                          |  |                                                          |  | $                                                      | (1,831) |             |                 |                                                    |                  |                                                         | $ | 1,831
|                                               |  |                                                          |  |                                                        |         |             |                 |                                                    |                  |                                                         |   |      

The following table provides a summary of the effect of cash flow hedges on the
Operating Partnerships accompanying Consolidated Statements of Operations for the quarter ended March 31, 2009 (amounts in thousands):



|                                               |  |                                                        |       |                                                                    |                  |                                                                  |   |                                                         |  |                                                                      |  |   |  
|---------------------------------------------- |  | ------------------------------------------------------ | ----- | ------------------------------------------------------------------ | ---------------- | ---------------------------------------------------------------- | - | ------------------------------------------------------- |  | -------------------------------------------------------------------- |  | - | -
|                                               |  | Effective Portion                                      |       | Ineffective Portion                                               
|Type of Cash Flow
Hedge                        |  | Amount ofGain/(Loss)  Recognized in OCI  on Derivative |       | Location of Gain/(Loss)Reclassified fromAccumulated OCIinto Income |                  | Amount of Gain/(Loss)Reclassified fromAccumulated OCIinto Income |   | Location ofGain/(Loss)Recognized in Incomeon Derivative |  | Location of Gain/(Loss)  Reclassified fromAccumulated OCIinto Income
|                                               |  |                                                        |       |                                                                    |                 
|Derivatives designated as hedging instruments: |  |                                                        |       |                                                                    |                  |                                                                  |   |                                                         |  |                                                                      |  |   |  
|Interest Rate Contracts:                       |  |                                                        |       |                                                                    |                  |                                                                  |   |                                                         |  |                                                                      |  |   |  
|Forward Starting Swaps/Treasury Locks          |  | $                                                      | 2,212 |                                                                    | Interest expense |                                                                  | $ | (1,493)                                                 |  | N/A                                                                  |  | $ | -
|Development Interest Rate Swaps/Caps           |  |                                                        | 448   |                                                                    | Interest expense |                                                                  |   | -                                                       |  | N/A                                                                  |  |   | -
|                                               |  |                                                        |       |                                                                    |                  |                                                                  |   |                                                         |  |                                                                      |  |   |  
|Total                                          |  | $                                                      | 2,660 |                                                                    |                  |                                                                  | $ | (1,493)                                                 |  |                                                                      |  | $ | -
|                                               |  |                                                        |       |                                                                    |                  |                                                                  |   |                                                         |  |                                                                      |  |   |  

As of March 31, 2009, there were approximately $33.0 million in deferred
losses, net, included in accumulated other comprehensive loss. Based on the estimated fair values of the net derivative instruments at March 31, 2009, the Operating Partnership may recognize an estimated $8.3 million of accumulated other
comprehensive loss as additional interest expense during the twelve months ending March 31, 2010.

In January 2009,
the Operating Partnership received approximately $0.4 million to terminate a fair value hedge of interest rates in conjunction with the public tender of the Operating Partnerships 4.75% fixed rate public notes due June 15, 2009.
Approximately $0.2 million of the settlement received has been deferred and will be recognized as a reduction of interest expense over the remaining life of the notes.

During the quarter ended March 31, 2009, the Operating Partnership continued to invest in various investment securities in an effort to increase the amounts earned on the significant amount
of unrestricted cash on hand throughout 2008 and 2009. The following table sets forth the maturity, amortized cost, gross unrealized gains and losses, book/fair value and interest and other income of the various investment securities held as of
March 31, 2009 (amounts in thousands):



19



---

|                                     |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      
|------------------------------------ |  | --------------------------------- |  | --------------- | ------- | ----------------- | - | ------------------ |  | --------------- | ----- | -------------------------- | - | ------- |  | - | -----
|                                     |  |                                   |  | Other Assets    |         |                  
|Security                             |  | Maturity                          |  | Amortized  Cost |         | Unrealized  Gains |   | Unrealized  Losses |  | Book/Fair Value |       | Interest and  Other Income
|                                     |  |                                   |  |                 |         |                  
|Held-to-Maturity                     |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      
|FDIC-insured promissory notes        |  | Less than one year                |  | $               | 100,000 |                   | $ | -                  |  | $               | -     |                            | $ | 100,000 |  | $ | 241  
|                                     |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      
|                                     |  |                                   |  |                 |         |                  
|Total Held-to-Maturity               |  |                                   |  |                 | 100,000 |                   |   | -                  |  |                 | -     |                            |   | 100,000 |  |   | 241  
|                                     |  |                                   |  |                 |         |                  
|Available-for-Sale                   |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      
|FDIC-insured certificates of deposit |  | Less than one year                |  |                 | 39,000  |                   |   | 237                |  |                 | -     |                            |   | 39,237  |  |   | 319  
|Other                                |  | Between one and five years or N/A |  |                 | 56,919  |                   |   | 3,626              |  |                 | (123) |                            |   | 60,422  |  |   | 1,750
|                                     |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      
|                                     |  |                                   |  |                 |         |                  
|Total Available-for-Sale             |  |                                   |  |                 | 95,919  |                   |   | 3,863              |  |                 | (123) |                            |   | 99,659  |  |   | 2,069
|                                     |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      
|Grand Total                          |  |                                   |  | $               | 195,919 |                   | $ | 3,863              |  | $               | (123) |                            | $ | 199,659 |  | $ | 2,310
|                                     |  |                                   |  |                 |         |                   |   |                    |  |                 |       |                            |   |         |  |   |      

SFAS No. 157 establishes a three-level valuation hierarchy for disclosure of
fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instruments categorization within the valuation hierarchy is based upon
the lowest level of input that is significant to the fair value measurement. The three levels are defined as follows:



| | ¡ |  | Level 1  Inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------



| | ¡ |  | Level 2  Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for
the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | ¡ |  | Level 3  Inputs to the valuation methodology are unobservable and significant to the fair value measurement.
| | - |  | -------------------------------------------------------------------------------------------------------------

The Operating Partnerships derivative positions are valued using models developed by the respective counterparty as well as models
developed internally by the Operating Partnership that use as their basis readily observable market parameters (such as forward yield curves and credit default swap data) and are classified within Level 2 of the valuation hierarchy. In addition,
employee holdings other than EQR Common Shares within the supplemental executive retirement plan (the SERP) have a fair value of $38.1 million as of March 31, 2009 and are included in other assets and other liabilities on the
consolidated balance sheet. These SERP investments are valued using quoted market prices for identical assets and are classified within Level 1 of the valuation hierarchy.

The Operating Partnerships investment securities are valued using quoted market prices or readily available market interest rate data. The quoted market prices are classified within Level 1
of the valuation hierarchy and the market interest rate data are classified within Level 2 of the valuation hierarchy.



|12. | Earnings Per Unit
|--- | -----------------

The following tables set forth the computation of net income per Unit  basic and net income per Unit  diluted (amounts in thousands except per Unit amounts):



20



---

|                                                                                                            |  |                         |         |      |   |        
|----------------------------------------------------------------------------------------------------------- |  | ----------------------- | ------- | ---- | - | -------
|                                                                                                            |  | Quarter ended March 31,
|                                                                                                            |  | 2009                    |         | 2008
|Numerator for net income per Unit  basic and diluted:                                                      |  |                         |         |      |   |        
|Income from continuing operations                                                                           |  | $                       | 23,487  |      | $ | 17,934 
|Net loss (income) attributable to Noncontrolling Interests  Partially Owned Properties                     |  |                         | 69      |      |   | (268)  
|Allocation to Preference Units                                                                              |  |                         | (3,620) |      |   | (3,633)
|Allocation to Preference Interests and Junior Preference Units                                              |  |                         | (4)     |      |   | (4)    
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Income from continuing operations available to Units                                                        |  |                         | 19,932  |      |   | 14,029 
|Discontinued operations, net                                                                                |  |                         | 61,934  |      |   | 129,594
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Numerator for net income per Unit  basic and diluted                                                       |  | $                       | 81,866  |      | $ | 143,623
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Denominator for net income per Unit  basic and diluted:                                                    |  |                         |         |      |   |        
|Denominator for net income per Unit  basic                                                                 |  |                         | 288,710 |      |   | 287,079
|Effect of dilutive securities:                                                                              |  |                         |         |      |   |        
|Dilution for Units issuable upon assumed exercise/vestingof EQRs long-term compensation award shares/units |  |                         | 143     |      |   | 2,238  
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Denominator for net income per Unit  diluted                                                               |  |                         | 288,853 |      |   | 289,317
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Net income per Unit  basic                                                                                 |  | $                       | 0.28    |      | $ | 0.50   
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Net income per Unit  diluted                                                                               |  | $                       | 0.28    |      | $ | 0.50   
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Net income per Unit  basic:                                                                                |  |                         |         |      |   |        
|Income from continuing operations available to Units                                                        |  | $                       | 0.069   |      | $ | 0.049  
|Discontinued operations, net                                                                                |  |                         | 0.214   |      |   | 0.451  
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Net income per Unit  basic                                                                                 |  | $                       | 0.283   |      | $ | 0.500  
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Net income per Unit  diluted:                                                                              |  |                         |         |      |   |        
|Income from continuing operations available to Units                                                        |  | $                       | 0.069   |      | $ | 0.048  
|Discontinued operations, net                                                                                |  |                         | 0.214   |      |   | 0.448  
|                                                                                                            |  |                         |         |      |   |        
|                                                                                                            |  |                        
|Net income per Unit  diluted                                                                               |  | $                       | 0.283   |      | $ | 0.496  
|                                                                                                            |  |                         |         |      |   |        

Convertible preference interests/units that could be converted into 406,031 and 444,474
weighted average Common Shares (which would be contributed to the Operating Partnership in exchange for OP Units) for the quarters ended March 31, 2009 and 2008, respectively, were outstanding but were not included in the computation of diluted
earnings per Unit because the effects would be anti-dilutive. In addition, the effect of the Common Shares/OP Units that could ultimately be issued upon the conversion/exchange of the Operating Partnerships $650.0 million ($531.1 million
outstanding at March 31, 2009) exchangeable senior notes was not included in the computation of diluted earnings per Unit because the effects would be anti-dilutive.



|13. | Discontinued Operations
|--- | -----------------------

The Operating Partnership has presented separately as discontinued operations in all periods the results of operations for all consolidated assets disposed of on or after January 1, 2002 (the date of adoption of
SFAS No. 144), all operations related to active condominium conversion properties effective upon their respective transfer into a TRS and all properties held for sale, if any.

The components of discontinued operations are outlined below and include the results of operations for the respective periods that the
Operating Partnership owned such assets during the quarters ended March 31, 2009 and 2008 (amounts in thousands).



21



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|                                             |  |                         |        |      |   |        
|-------------------------------------------- |  | ----------------------- | ------ | ---- | - | -------
|                                             |  | Quarter Ended March 31,
|                                             |  | 2009                    |        | 2008
|REVENUES                                     |  |                         |        |      |   |        
|Rental income                                |  | $                       | 3,945  |      | $ | 25,501 
|                                             |  |                         |        |      |   |        
|Total revenues                               |  |                         | 3,945  |      |   | 25,501 
|                                             |  |                         |        |      |   |        
|                                             |  |                        
|EXPENSES (1)                                 |  |                         |        |      |   |        
|Property and maintenance                     |  |                         | 2,796  |      |   | 8,777  
|Real estate taxes and insurance              |  |                         | 528    |      |   | 3,235  
|Property management                          |  |                         | -      |      |   | (65)   
|Depreciation                                 |  |                         | 443    |      |   | 6,385  
|General and administrative                   |  |                         | 5      |      |   | 3      
|                                             |  |                         |        |      |   |        
|Total expenses                               |  |                         | 3,772  |      |   | 18,335 
|                                             |  |                         |        |      |   |        
|                                             |  |                        
|Discontinued operating income                |  |                         | 173    |      |   | 7,166  
|                                             |  |                        
|Interest and other income                    |  |                         | 3      |      |   | (18)   
|Interest (2):                                |  |                         |        |      |   |        
|Expense incurred, net                        |  |                         | (35)   |      |   | (269)  
|Amortization of deferred financing costs     |  |                         | (32)   |      |   | (1)    
|Income and other tax (expense) benefit       |  |                         | (46)   |      |   | 199    
|                                             |  |                         |        |      |   |        
|                                             |  |                        
|Discontinued operations                      |  |                         | 63     |      |   | 7,077  
|Net gain on sales of discontinued operations |  |                         | 61,871 |      |   | 122,517
|                                             |  |                         |        |      |   |        
|                                             |  |                        
|Discontinued operations, net                 |  | $                       | 61,934 |      | $ | 129,594
|                                             |  |                         |        |      |   |        



| | (1) | Includes expenses paid in the current period for properties sold or held for sale in prior periods related to the Operating Partnerships period of
ownership.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (2) | Includes only interest expense specific to secured mortgage notes payable for properties sold and/or held for sale.
| | --- | -------------------------------------------------------------------------------------------------------------------

For the properties sold during the quarter ended March 31, 2009 (excluding condominium conversion properties), the investment in
real estate, net of accumulated depreciation, and the mortgage notes payable balances at December 31, 2008 were $75.7 million and $4.4 million, respectively.

The net real estate basis of the Operating Partnerships active condominium conversion properties owned by the TRS and included in discontinued operations (excludes the Operating
Partnerships halted conversions as they are now held for use), which were included in investment in real estate, net in the consolidated balance sheets, was $12.5 million and $12.6 million at March 31, 2009 and December 31, 2008,
respectively.



|14. | Commitments and Contingencies
|--- | -----------------------------

The Operating Partnership, as an owner of real estate, is subject to various Federal, state and local environmental laws. Compliance by the Operating Partnership with existing laws has not had a material adverse
effect on the Operating Partnership. However, the Operating Partnership cannot predict the impact of new or changed laws or regulations on its current properties or on properties that it may acquire in the future.

The Operating Partnership is party to a housing discrimination lawsuit brought by a non-profit civil rights organization in April 2006 in
the U.S. District Court for the District of Maryland. The suit alleges that the Operating Partnership designed and built approximately 300 of its properties in violation of the accessibility requirements of the Fair Housing Act and Americans with
Disabilities Act. The suit seeks actual and punitive damages, injunctive relief (including modification of non-compliant properties), costs and attorneys fees. The Operating Partnership believes it has a number of viable defenses, including
that a majority of the named properties were completed before the operative dates of the statutes in question and/or were not designed or built by the Operating Partnership. Accordingly, the Operating Partnership is defending the suit vigorously.
Due to the pendency of the Operating Partnerships defenses and the uncertainty of many other critical factual and legal issues, it is not possible to determine or predict the outcome of the suit and as a result, no amounts have been accrued at
March 31, 2009. While no assurances can be given, the Operating Partnership does not believe that the suit, if adversely determined, would have a material adverse effect on the Operating Partnership.



22



---

The Operating Partnership does not believe there is any other litigation pending or
threatened against it that, individually or in the aggregate, reasonably may be expected to have a material adverse effect on the Operating Partnership.

The Operating Partnership has established a reserve and recorded a corresponding reduction to its net gain on sales of discontinued operations related to potential liabilities associated with its condominium
conversion activities. The reserve covers potential product liability related to each conversion. The Operating Partnership periodically assesses the adequacy of the reserve and makes adjustments as necessary. During the quarter ended March 31,
2009, the Operating Partnership paid approximately $0.7 million in settlements. As a result, the Operating Partnership had total reserves of approximately $9.6 million at March 31, 2009. While no assurances can be given, the Operating
Partnership does not believe that the ultimate resolution of these potential liabilities, if adversely determined, would have a material adverse effect on the Operating Partnership.

As of March 31, 2009, the Operating Partnership has eight projects totaling 2,826 units in various stages of development with
estimated completion dates ranging through June 30, 2011. Some of the projects are developed solely by the Operating Partnership, while others are co-developed with various third party development partners. The development venture agreements
with partners are primarily deal-specific, with differing terms regarding profit-sharing, equity contributions, returns on investment, buy-sell agreements and other customary provisions. The partner is most often the general or
managing partner of the development venture. The typical buy-sell arrangements contain appraisal rights and provisions that provide the right, but not the obligation, for the Operating Partnership to acquire the partners interest
in the project at fair market value upon the expiration of a negotiated time period (typically two to five years after substantial completion of the project). However, the buy-sell provisions with one partner covering three projects required the
Operating Partnership to purchase the partners interest in the projects at fair market value five years following the receipt of the final certificate of occupancy on the last developed property. During the quarter ended March 31, 2009,
the Operating Partnership paid approximately $2.8 million to acquire its partners interest in the three projects.



|15. | Reportable Segments
|--- | -------------------

Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by senior management. Senior management decides how resources are
allocated and assesses performance on a monthly basis.

The Operating Partnerships primary business is owning,
managing and operating multifamily residential properties, which includes the generation of rental and other related income through the leasing of apartment units to residents. Senior management evaluates the performance of each of our apartment
communities individually and geographically, and both on a same store and non-same store basis; however, each of our apartment communities generally has similar economic characteristics, residents, products and services. The Operating
Partnerships operating segments have been aggregated by geography in a manner identical to that which is provided to its chief operating decision maker.

The Operating Partnerships fee and asset management, development (including FIN No. 46 partially owned properties), condominium conversion and corporate housing (Equity Corporate
Housing or ECH) activities are immaterial and do not individually meet the threshold requirements of a reportable segment as provided for in SFAS No. 131 and as such, have been aggregated in the tables presented below.

All revenues are from external customers and there is no customer who contributed 10% or more of the Operating Partnerships
total revenues during the quarters ended March 31, 2009 and 2008, respectively.

The primary financial measure for the
Operating Partnerships rental real estate segment is net operating income (NOI), which represents rental income less: 1) property and maintenance expense; 2) real estate taxes and insurance expense; and 3) property management
expense (all as reflected in the accompanying consolidated statements of operations). The Operating Partnership believes that NOI is helpful to investors as a supplemental measure of the operating performance of a real estate company because it is a
direct measure of the actual operating results of the Operating Partnerships apartment communities. Current year NOI is compared to prior year NOI and current year budgeted NOI as a measure of financial performance. The following tables
present NOI for each segment from our rental real estate specific to continuing operations for the quarters ended March 31, 2009 and 2008, respectively, as well as total assets at March 31, 2009 (amounts in thousands):



23



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|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ---------------------------- | --------- | --------- | - | --------- |  | --------- | --------- | --------- | - | --------- |  | - | --------- |  | - | ----------
|                                                                                                                                                                                                                                                                               |  | Quarter Ended March 31, 2009
|                                                                                                                                                                                                                                                                               |  | Northeast                    |           | Northwest |   | Southeast |  | Southwest |           | Other (3) |   | Total    
|Rental income:                                                                                                                                                                                                                                                                 |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Same store (1)                                                                                                                                                                                                                                                                 |  | $                            | 140,105   |           | $ | 98,937    |  | $         | 113,319   |           | $ | 111,484   |  | $ | -         |  | $ | 463,845   
|Non-same store/other (2) (3)                                                                                                                                                                                                                                                   |  |                              | 12,554    |           |   | 4,541     |  |           | 3,175     |           |   | 7,813     |  |   | 20,353    |  |   | 48,436    
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Total rental income                                                                                                                                                                                                                                                            |  |                              | 152,659   |           |   | 103,478   |  |           | 116,494   |           |   | 119,297   |  |   | 20,353    |  |   | 512,281   
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |          
|Operating expenses:                                                                                                                                                                                                                                                            |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Same store (1)                                                                                                                                                                                                                                                                 |  |                              | 55,260    |           |   | 35,367    |  |           | 48,900    |           |   | 38,970    |  |   | -         |  |   | 178,497   
|Non-same store/other (2) (3)                                                                                                                                                                                                                                                   |  |                              | 5,482     |           |   | 2,158     |  |           | 1,344     |           |   | 3,568     |  |   | 17,472    |  |   | 30,024    
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Total operating expenses                                                                                                                                                                                                                                                       |  |                              | 60,742    |           |   | 37,525    |  |           | 50,244    |           |   | 42,538    |  |   | 17,472    |  |   | 208,521   
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |          
|NOI:                                                                                                                                                                                                                                                                           |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Same store (1)                                                                                                                                                                                                                                                                 |  |                              | 84,845    |           |   | 63,570    |  |           | 64,419    |           |   | 72,514    |  |   | -         |  |   | 285,348   
|Non-same store/other (2) (3)                                                                                                                                                                                                                                                   |  |                              | 7,072     |           |   | 2,383     |  |           | 1,831     |           |   | 4,245     |  |   | 2,881     |  |   | 18,412    
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Total NOI                                                                                                                                                                                                                                                                      |  | $                            | 91,917    |           | $ | 65,953    |  | $         | 66,250    |           | $ | 76,759    |  | $ | 2,881     |  | $ | 303,760   
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |          
|Total assets                                                                                                                                                                                                                                                                   |  | $                            | 4,786,043 |           | $ | 2,736,714 |  | $         | 3,129,038 |           | $ | 2,988,498 |  | $ | 2,395,363 |  | $ | 16,035,656
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|                                                                                                                                                                                                                                                                              
|(1)    Same store includes properties owned for all of both periods ending March 31,
2009 and March 31, 2008 which represented 123,120 units.                                                                                                                                 
|(2)    Non-same store includes properties acquired after January 1,
2008.                                                                                                                                                                                                     
|(3)    Other includes ECH, development, condominium conversion overhead of $0.5 million and
other corporate operations. Also reflects a $2.3 million elimination of rental income recorded in Northeast, Northwest, Southeast and Southwest operating segments related to ECH.
|                                                                                                                                                                                                                                                                               | 
|                                                                                                                                                                                                                                                                               |  | Quarter Ended March 31, 2008
|                                                                                                                                                                                                                                                                               |  | Northeast                    |           | Northwest |   | Southeast |  | Southwest |           | Other (3) |   | Total    
|Rental income:                                                                                                                                                                                                                                                                 |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Same store (1)                                                                                                                                                                                                                                                                 |  | $                            | 138,860   |           | $ | 97,515    |  | $         | 115,478   |           | $ | 112,849   |  | $ | -         |  | $ | 464,702   
|Non-same store/other (2) (3)                                                                                                                                                                                                                                                   |  |                              | 4,912     |           |   | 4,292     |  |           | 22        |           |   | 5,325     |  |   | 21,094    |  |   | 35,645    
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Total rental income                                                                                                                                                                                                                                                            |  |                              | 143,772   |           |   | 101,807   |  |           | 115,500   |           |   | 118,174   |  |   | 21,094    |  |   | 500,347   
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |          
|Operating expenses:                                                                                                                                                                                                                                                            |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Same store (1)                                                                                                                                                                                                                                                                 |  |                              | 53,710    |           |   | 34,530    |  |           | 47,411    |           |   | 38,027    |  |   | -         |  |   | 173,678   
|Non-same store/other (2) (3)                                                                                                                                                                                                                                                   |  |                              | 2,878     |           |   | 1,522     |  |           | 80        |           |   | 3,782     |  |   | 25,400    |  |   | 33,662    
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Total operating expenses                                                                                                                                                                                                                                                       |  |                              | 56,588    |           |   | 36,052    |  |           | 47,491    |           |   | 41,809    |  |   | 25,400    |  |   | 207,340   
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |          
|NOI:                                                                                                                                                                                                                                                                           |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Same store (1)                                                                                                                                                                                                                                                                 |  |                              | 85,150    |           |   | 62,985    |  |           | 68,067    |           |   | 74,822    |  |   | -         |  |   | 291,024   
|Non-same store/other (2) (3)                                                                                                                                                                                                                                                   |  |                              | 2,034     |           |   | 2,770     |  |           | (58)      |           |   | 1,543     |  |   | (4,306)   |  |   | 1,983     
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|Total NOI                                                                                                                                                                                                                                                                      |  | $                            | 87,184    |           | $ | 65,755    |  | $         | 68,009    |           | $ | 76,365    |  | $ | (4,306)   |  | $ | 293,007   
|                                                                                                                                                                                                                                                                               |  |                              |           |           |   |           |  |           |           |           |   |           |  |   |           |  |   |           
|                                                                                                                                                                                                                                                                              
|(1)    Same store includes properties owned for all of both periods ending March 31,
2009 and March 31, 2008 which represented 123,120 units.                                                                                                                                 
|(2)    Non-same store includes properties acquired after January 1,
2008.                                                                                                                                                                                                     
|(3)    Other includes ECH, development, condominium conversion overhead of $0.7 million and
other corporate operations. Also reflects a $3.2 million elimination of rental income recorded in Northeast, Northwest, Southeast and Southwest operating segments related to ECH.

Note: Markets included in the above geographic segments are as follows:

|(a) | Northeast  New England (excluding Boston), Boston, New York Metro, DC Northern Virginia and Suburban Maryland.
|--- | ---------------------------------------------------------------------------------------------------------------

|(b) | Northwest  Central Valley, Denver, Portland, San Francisco Bay Area and Seattle/Tacoma.
|--- | ----------------------------------------------------------------------------------------

|(c) | Southeast  Atlanta, Jacksonville, Orlando, Raleigh/Durham, South Florida and Tampa.
|--- | ------------------------------------------------------------------------------------

|(d) | Southwest  Albuquerque, Dallas/Ft. Worth, Inland Empire, Los Angeles, Orange County, Phoenix, San Diego and Tulsa.
|--- | -------------------------------------------------------------------------------------------------------------------



24



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The following table presents a reconciliation of NOI from our rental real estate specific
to continuing operations for the quarters ended March 31, 2009 and 2008, respectively (amounts in thousands):



|                                        |  |                         |           |      |   |          
|--------------------------------------- |  | ----------------------- | --------- | ---- | - | ---------
|                                        |  | Quarter Ended March 31,
|                                        |  | 2009                    |           | 2008
|                                        |  |                        
|Rental income                           |  | $                       | 512,281   |      | $ | 500,347  
|Property and maintenance expense        |  |                         | (133,543) |      |   | (132,837)
|Real estate taxes and insurance expense |  |                         | (55,964)  |      |   | (53,327) 
|Property management expense             |  |                         | (19,014)  |      |   | (21,176) 
|                                        |  |                         |           |      |   |          
|Total operating expenses                |  |                         | (208,521) |      |   | (207,340)
|                                        |  |                         |           |      |   |          
|Net operating income                    |  | $                       | 303,760   |      | $ | 293,007  
|                                        |  |                         |           |      |   |          



|16. | Subsequent Events/Other
|--- | -----------------------

Subsequent Events

Subsequent to March 31, 2009 and through April 30, 2009, the Operating
Partnership repaid $281.0 million of mortgage loans.

Other

During the quarters ended March 31, 2009 and 2008, the Operating Partnership recorded approximately $0.6 million and $1.7 million of additional general and administrative expense,
respectively, and $0.4 million and $0.2 million of additional property management expense, respectively, related primarily to cash severance for various employees.



25



---

Item 2. Managements Discussion and Analysis of Financial Condition and Results of Operations

For further information including definitions for capitalized terms not defined herein, refer to the consolidated
financial statements and footnotes thereto included in the Operating Partnerships annual report on Form 10-K for the year ended December 31, 2008.

Forward-Looking Statements

Forward-looking statements in this report are intended to be made pursuant to
the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are based on current expectations, estimates, projections and assumptions made by management. While the Operating Partnerships management
believes the assumptions underlying its forward-looking statements are reasonable, such information is inherently subject to uncertainties and may involve certain risks, which could cause actual results, performance or achievements of the Operating
Partnership to differ materially from anticipated future results, performance or achievements expressed or implied by such forward-looking statements. Many of these uncertainties and risks are difficult to predict and beyond managements
control. Forward-looking statements are not guarantees of future performance, results or events. The forward-looking statements contained herein are made as of the date hereof and the Operating Partnership undertakes no obligation to update or
supplement these forward-looking statements. Factors that might cause such differences include, but are not limited to the following:



| | ¡ |  | We intend to actively acquire multifamily properties for rental operations as market conditions dictate. The Operating Partnership does not currently intend to
begin the development of any new wholly-owned projects but has a substantial number of properties under development now and may commence new development activities if conditions warrant. We may underestimate the costs necessary to bring an acquired
property up to standards established for its intended market position or to complete a development property. Additionally, we expect that other major real estate investors with significant capital will compete with us for attractive investment
opportunities or may also develop properties in markets where we focus our development efforts. This competition may increase prices for multifamily properties. We may not be in a position or have the opportunity in the future to make suitable
property acquisitions on favorable terms. To the extent that we do develop more properties if conditions warrant, we expect to do so ourselves in addition to co-investing with our development partners. The total number of development units, cost of
development and estimated completion dates are subject to uncertainties arising from changing economic conditions (such as the cost of labor and construction materials), competition and local government regulation;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | Sources of capital to the Operating Partnership or labor and materials required for maintenance, repair, capital expenditure or development may be more expensive
than anticipated;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | Occupancy levels and market rents may be adversely affected by national and local economic and market conditions including, without limitation, new construction
and excess inventory of multifamily housing and single family housing, slow or negative employment growth, availability of low interest mortgages for single family home buyers and the potential for geopolitical instability, all of which are beyond
the Operating Partnerships control; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | Additional factors as discussed in Part I of the Annual Report on Form 10-K, particularly those under Item 1A. Risk Factors.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------

Forward-looking statements and related uncertainties are also included in Notes 2, 5, 11 and 14 in the
Notes to Consolidated Financial Statements in this report.

Overview

ERP Operating Limited Partnership (ERPOP), an Illinois limited partnership, was formed in May 1993 to conduct the multifamily residential property business of Equity Residential
(EQR). EQR, a Maryland real estate investment trust (REIT) formed in March 1993, is an S&P 500 company focused on the acquisition, development and management of high quality apartment properties in top United States
growth markets. EQR has elected to be taxed as a REIT.

EQR is one of the largest publicly traded real estate companies and
is the largest publicly traded owner of multifamily properties in the United States (based on the aggregate market value of its outstanding Common Shares, the number of apartment units wholly owned and total revenues earned). The Operating
Partnerships corporate headquarters are located in Chicago, Illinois and the Operating Partnership also operates property management offices



26



---

throughout the United States. As of April 30, 2009, the Operating Partnership has approximately 4,600 employees who provide real estate operations,
leasing, legal, financial, accounting, acquisition, disposition, development and other support functions.

EQR is the
general partner of, and as of March 31, 2009 owned an approximate 94.4% ownership interest in ERPOP. EQR is structured as an umbrella partnership REIT (UPREIT) under which all property ownership and related business operations are
conducted through ERPOP and its subsidiaries. References to the Operating Partnership include ERPOP and those entities owned or controlled by it. References to the Company mean EQR and the Operating Partnership.

Business Objectives and Operating Strategies

The Operating Partnership seeks to maximize current income, capital appreciation of each property and the total return for its shareholders. The Operating Partnerships strategy for
accomplishing these objectives includes:



| | ¡ |  | Leveraging our size and scale in four critical ways:
| | - |  | ----------------------------------------------------



| | ¡ |  | Investing in apartment communities located in strategically targeted markets to maximize our total return on an enterprise level;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | Meeting the needs of our residents by offering a wide array of product choices and a commitment to service;
| | - |  | -----------------------------------------------------------------------------------------------------------

| | ¡ |  | Engaging, retaining and attracting the best employees by providing them with the education, resources and opportunities to succeed; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | Sharing resources, customers and best practices in property management and across the enterprise.
| | - |  | -------------------------------------------------------------------------------------------------



| | ¡ |  | Owning a highly diversified portfolio by investing in target markets defined by a combination of the following criteria:
| | - |  | ------------------------------------------------------------------------------------------------------------------------



| | ¡ |  | High barrier-to-entry (low supply);
| | - |  | -----------------------------------

| | ¡ |  | Strong economic predictors (high demand); and
| | - |  | ---------------------------------------------

| | ¡ |  | Attractive quality of life (high demand and retention).
| | - |  | -------------------------------------------------------



| | ¡ |  | Giving residents reasons to stay with the Operating Partnership by providing a range of product options available in our diversified portfolio and by enhancing
their experience through our employees and our services.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | ¡ |  | Being open and responsive to market realities to take advantage of investment opportunities that align with our long-term vision.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------

Acquisition, Development and Disposition Strategies

The Operating Partnership anticipates that future property acquisitions, developments and dispositions will occur within the United States. Acquisitions and developments may be financed from
various sources of capital, which may include retained cash flow, issuance of additional equity and debt securities, sales of properties, joint venture agreements and collateralized and uncollateralized borrowings. In addition, the Operating
Partnership may acquire properties in transactions that include the issuance of limited partnership interests in the Operating Partnership (OP Units) as consideration for the acquired properties. Such transactions may, in certain
circumstances, enable the sellers to defer, in whole or in part, the recognition of taxable income or gain that might otherwise result from the sales. ERPOP may also acquire land parcels to hold and/or sell based on market opportunities.

When evaluating potential acquisitions, developments and dispositions, the Operating Partnership generally considers the following
factors:



| | ¡ |  | strategically targeted markets;
| | - |  | -------------------------------

| | ¡ |  | income levels and employment growth trends in the relevant market;
| | - |  | ------------------------------------------------------------------

| | ¡ |  | employment and household growth and net migration of the relevant markets population;
| | - |  | --------------------------------------------------------------------------------------

| | ¡ |  | barriers to entry that would limit competition (zoning laws, building permit availability, supply of undeveloped or developable real estate, local building costs
and construction costs, among other factors);
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | the location, construction quality, condition and design of the property;
| | - |  | -------------------------------------------------------------------------



27



---

| | ¡ |  | the current and projected cash flow of the property and the ability to increase cash flow;
| | - |  | ------------------------------------------------------------------------------------------

| | ¡ |  | the potential for capital appreciation of the property;
| | - |  | -------------------------------------------------------

| | ¡ |  | the terms of resident leases, including the potential for rent increases;
| | - |  | -------------------------------------------------------------------------

| | ¡ |  | the potential for economic growth and the tax and regulatory environment of the community in which the property is located;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | the occupancy and demand by residents for properties of a similar type in the vicinity (the overall market and submarket);
| | - |  | --------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | the prospects for liquidity through sale, financing or refinancing of the property;
| | - |  | -----------------------------------------------------------------------------------

| | ¡ |  | the benefits of integration into existing operations;
| | - |  | -----------------------------------------------------

| | ¡ |  | purchase prices and yields of available existing stabilized properties, if any;
| | - |  | -------------------------------------------------------------------------------

| | ¡ |  | competition from existing multifamily properties, comparably priced single family homes or rentals, residential properties under development and the potential
for the construction of new multifamily properties in the area; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | opportunistic selling based on demand and price of high quality assets, including condominium conversions.
| | - |  | ----------------------------------------------------------------------------------------------------------

The Operating Partnership generally reinvests the proceeds received from property dispositions primarily to achieve its acquisition,
development and rehab strategies and at times to fund its debt and equity repurchase activities. In addition, when feasible, the Operating Partnership may structure these transactions as tax-deferred exchanges.

Current Environment

The slowdown in the economy, which accelerated in the fourth quarter of 2008 and has continued into 2009, coupled with continued job losses and/or lack of job growth leads us to be cautious regarding expected performance for the remainder
of 2009. Since the fourth quarter of 2008 and continuing into the second quarter of 2009, our revenue has declined in most of our major markets as the economic slowdown continues to impact existing and prospective residents. Markets with little
employment loss should perform better than markets with employment issues, although all of our markets are continuing to experience job losses. Should the current credit crisis and general economic recession continue, the Operating Partnership may
continue to experience a period of declining revenues, which would adversely impact the Operating Partnerships results of operations. The vast majority of our leases are for terms of 12 months or less. As a result, we quickly feel the impact
of an economic downturn which limits our ability to raise rents or causes us to lower rents on turnover units and lease renewals. Since the second half of 2008, continued job losses and lower household formation have caused us to lower rents
(sometimes significantly) for new residents. While we have generally been able to maintain existing rent levels with renewing residents, we have seen declines in certain markets.

After two consecutive years of modest expense growth (same store expenses grew 2.2% between 2008 and 2007 and 2.1% between 2007 and
2006), the Operating Partnership anticipates that 2009 expenses will increase at a higher rate primarily due to cost pressures from non-controllable areas such as utilities and real estate taxes. Accordingly, quarter over quarter same store expenses
increased 2.8% during the quarter ended March 31, 2009. The combination of expected declines in revenues and higher overall expense levels will have a negative impact on the Operating Partnerships results of operations for 2009.

The continued credit crisis has negatively impacted the availability and pricing of debt capital. During this time, the
multifamily residential sector has benefited from the continued liquidity provided by Fannie Mae and Freddie Mac. A vast majority of the properties we sold in 2008 and 2009 were financed for the purchaser by one of these agencies. Furthermore,
Fannie Mae and Freddie Mac provided us with approximately $1.6 billion of secured mortgage financing in 2008 at attractive rates when compared to other sources of credit. Should these agencies discontinue providing liquidity to our sector, have
their mandates changed or reduced or be disbanded or reorganized by the government, it would significantly reduce our access to debt capital and/or increase borrowing costs and would significantly reduce our sales of assets.

In response to the recession and liquidity issues prevalent in the debt markets, we took a number of steps to better position ourselves.
In early 2008, we began pre-funding our maturing debt obligations with approximately $1.6 billion in secured mortgage financing obtained from Fannie Mae and Freddie Mac. We also significantly reduced our acquisition activity. During the second half
of 2008 and into the first quarter of 2009, we only acquired one property while we continued selling non-core assets. We expect to continue to be a net seller of assets during 2009 should current conditions continue. Additionally, we significantly
reduced our development activities, starting only two new projects in the first half of 2008 and none in the second half of the year or in the first quarter of 2009. We also reduced the number of planned development projects we will undertake in the
future and took a $116.4 million impairment charge in 2008 to reduce the value of five assets that we no longer plan on pursuing. We do not currently anticipate starting any new



28



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wholly-owned development projects during 2009 unless market conditions improve significantly. Finally, during 2009 we also expect to continue our focus on
our expense control initiatives.

Our specific current expectations regarding our results for 2009 and certain items that
will affect them are set forth under Results of Operations below.

We believe that cash and cash equivalents, securities
readily convertible to cash and current availability on our revolving credit facility will provide sufficient liquidity to meet our funding obligations relating to debt retirement and existing development projects into 2011. We expect that our
remaining funding obligations for 2011 and subsequent periods will be met through new borrowings, property dispositions and cash generated from operations.

Despite the challenging conditions noted above, we believe that the Operating Partnership is well-positioned to withstand the continuing economic downturn. Our properties are geographically
diverse and were approximately 93% occupied as of March 31, 2009, little new multifamily rental supply has been added to most of our markets, the national single family home ownership rate continues to decline and the long-term demographic
picture is positive.

We believe we are well-positioned with a strong balance sheet and sufficient liquidity to cover debt
maturities and development fundings in the near term, which should allow us to take advantage of investment opportunities should distressed assets become available at significant discounts. When economic conditions improve, the short-term nature of
our leases and the limited supply of new rental housing being constructed should allow us to quickly realize revenue growth and improvement in our operating results.

Results of Operations

In conjunction with our business objectives and operating
strategy, the Operating Partnership continued to invest or recycle its capital investment in apartment communities located in strategically targeted markets during the quarter ended March 31, 2009 as follows:



| | ¡ |  | Sold $160.3 million of apartment properties consisting of 12 properties and 1,747 units, as well as 1 condominium unit for $0.1 million.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------

The Operating Partnerships primary financial measure for evaluating each of its apartment
communities is net operating income (NOI). NOI represents rental income less property and maintenance expense, real estate tax and insurance expense and property management expense. The Operating Partnership believes that NOI is helpful
to investors as a supplemental measure of the operating performance of a real estate company because it is a direct measure of the actual operating results of the Operating Partnerships apartment communities.

Properties that the Operating Partnership owned for all of both of the quarters ended March 31, 2009 and 2008 (the First
Quarter 2009 Same Store Properties), which represented 123,120 units, impacted the Operating Partnerships results of operations. The First Quarter 2009 Same Store Properties are discussed in the following paragraphs.

The Operating Partnerships acquisition, disposition and completed development activities also impacted overall results of
operations for the quarters ended March 31, 2009 and 2008. The impacts of these activities are discussed in greater detail in the following paragraphs.

Comparison of the quarter ended March 31, 2009 to the quarter ended March 31, 2008

For the quarter ended March 31, 2009, income from continuing operations increased by approximately $5.6 million or 31.0% when compared to the quarter ended March 31, 2008. The increase in continuing
operations is discussed below.

Revenues from the First Quarter 2009 Same Store Properties decreased $0.9 million primarily
as a result of an increase in move-in concessions offered to residents and a decline in occupancy, partially offset by a minor increase in average rental rates charged to residents. Expenses from the First Quarter 2009 Same Store Properties
increased $4.8 million primarily due to higher real estate taxes, payroll and utility costs. The following tables provide comparative results and statistics for the First Quarter 2009 Same Store Properties:



29



---

First Quarter 2009 vs. First Quarter 2008

Quarter over Quarter Same Store Results/Statistics

$ in thousands (except for Average
Rental Rate)  123,120 Same Store Units



|            |  |          |         |            |   |         |  |                       |         |           |   |          |  |        |  |       
|----------- |  | -------- | ------- | ---------- | - | ------- |  | --------------------- | ------- | --------- | - | -------- |  | ------ |  | ------
|            |  | Results  |         | Statistics
|Description |  | Revenues |         | Expenses   |   | NOI     |  | AverageRentalRate
(1) |         | Occupancy |   | Turnover
|            |  |          |         |            |   |        
|Q1 2009     |  | $        | 463,845 |            | $ | 178,497 |  | $                     | 285,348 |           | $ | 1,341    |  | 93.7%  |  | 13.5% 
|Q1 2008     |  | $        | 464,702 |            | $ | 173,678 |  | $                     | 291,024 |           | $ | 1,337    |  | 94.2%  |  | 13.7% 
|            |  |          |         |            |   |         |  |                       |         |           |   |          |  |        |  |       
|Change      |  | $        | (857)   |            | $ | 4,819   |  | $                     | (5,676) |           | $ | 4        |  | (0.5%) |  | (0.2%)
|            |  |          |         |            |   |         |  |                       |         |           |   |          |  |        |  |       
|Change      |  |          | (0.2%)  |            |   | 2.8%    |  |                       | (2.0%)  |           |   | 0.3%     |  |        |  |       

(1) Average rental rate is defined as total rental revenues divided by the
weighted average occupied units for the period.

The following table presents a reconciliation of operating income per the
consolidated statements of operations to NOI for the First Quarter 2009 Same Store Properties:



|                                 |  |                         |          |      |   |        
|-------------------------------- |  | ----------------------- | -------- | ---- | - | -------
|                                 |  | Quarter Ended March 31,
|                                 |  | 2009                    |          | 2008
|                                 |  | (Amounts in thousands) 
|                                 |  |                        
|Operating income                 |  | $                       | 144,181  |      | $ | 139,509
|Adjustments:                     |  |                         |          |      |   |        
|Non-same store operating results |  |                         | (18,412) |      |   | (1,983)
|Fee and asset management revenue |  |                         | (2,863)  |      |   | (2,294)
|Fee and asset management expense |  |                         | 2,003    |      |   | 2,180  
|Depreciation                     |  |                         | 150,045  |      |   | 141,195
|General and administrative       |  |                         | 10,394   |      |   | 12,417 
|                                 |  |                         |          |      |   |        
|                                 |  |                        
|Same store NOI                   |  | $                       | 285,348  |      | $ | 291,024
|                                 |  |                         |          |      |   |        

For properties that the Operating Partnership acquired prior to January 1,
2008 and expects to continue to own through December 31, 2009, the Operating Partnership anticipates the following same store results for the full year ending December 31, 2009:



|                            |  |                   
|--------------------------- |  | ------------------
|2009 Same Store Assumptions
|                            | 
|Physical occupancy          |  | 93.5%             
|Revenue change              |  | (4.50%) to (1.50%)
|Expense change              |  | 2.50% to 3.50%    
|NOI change                  |  | (9.25%) to (3.75%)

These 2009 assumptions are based on current expectations and are forward-looking.

Non-same store operating results increased approximately $16.4 million and consist primarily of properties acquired in
calendar year 2008, as well as operations from completed development properties and our corporate housing business.

See
also Note 15 in the Notes to Consolidated Financial Statements for additional discussion regarding the Operating Partnerships segment disclosures.

Fee and asset management revenues, net of fee and asset management expenses, increased approximately $0.7 million primarily due to an increase in revenue earned on the management of our military housing venture at
Fort Lewis along with the addition of McChord Air Force Base, as well as a decrease in asset management expenses. As of March 31, 2009 and 2008, the Operating Partnership managed 14,263 and 14,472 units, respectively, primarily for
unconsolidated entities and our military housing ventures at Fort Lewis and McChord Air Force Base.



30



---

Property management expenses from continuing operations include off-site expenses
associated with the self-management of the Operating Partnerships properties as well as management fees paid to any third party management companies. These expenses decreased by approximately $2.2 million or 10.2%. This decrease is primarily
attributable to lower overall payroll-related costs as a result of a decrease in the number of properties in the Operating Partnerships portfolio.

Depreciation expense from continuing operations, which includes depreciation on non-real estate assets, increased approximately $8.9 million or 6.3% primarily as a result of additional depreciation expense on
properties acquired in 2008, the reclassification of 2008 depreciation expense to discontinued operations for properties sold subsequent to January 1, 2008 and capital expenditures for all properties owned.

General and administrative expenses from continuing operations, which include corporate operating expenses, decreased approximately $2.0
million or 16.3% primarily due to lower overall payroll-related costs as a result of a decrease in the number of properties in the Operating Partnerships portfolio, as well as a $1.1 million decrease in severance related costs in 2009. The
Operating Partnership anticipates that general and administrative expenses will approximate $40.0 million to $42.0 million for the year ending December 31, 2009. The above assumption is based on current expectations and is forward-looking.

Interest and other income from continuing operations increased approximately $2.7 million or 78.7% primarily as a result
of interest earned on the Operating Partnerships investment in corporate notes (see Note 11) as well as a $2.0 million gain recognized during the quarter ended March 31, 2009 related to the partial debt extinguishment of the Operating
Partnerships August 2026 convertible notes (see Note 9). This was partially offset by a decrease in interest earned on 1031 exchange and security deposits due primarily to the decline in the Operating Partnerships transaction activities
and a decrease in interest earned on cash and cash equivalents due to a decrease in interest rates and overall balances, as well as less litigation settlement proceeds received in 2009. The Operating Partnership anticipates that interest and other
income will approximate $11.0 million to $14.0 million for the year ending December 31, 2009. The above assumption is based on current expectations and is forward-looking.

Other expenses increased approximately $0.1 million primarily due to the Operating Partnerships adoption of SFAS No. 141(R) on January 1, 2009, which required the expensing of
transaction costs associated with the Operating Partnerships acquisition of all of its partners interest in three previously partially owned properties consisting of 833 units during the quarter ended March 31, 2009.

Interest expense from continuing operations, including amortization of deferred financing costs, increased approximately $5.2 million or
4.3% primarily as a result of higher overall debt levels outstanding due to the Operating Partnerships pre-funding of its 2008 and 2009 debt maturities and lower capitalized interest, partially offset by lower overall effective interest rates.
During the quarter ended March 31, 2009, the Operating Partnership capitalized interest costs of approximately $10.6 million as compared to $14.7 million for the quarter ended March 31, 2008. This capitalization of interest primarily
relates to consolidated projects under development. The effective interest cost on all indebtedness for the quarter ended March 31, 2009 was 5.41% as compared to 5.61% for the quarter ended March 31, 2008. The Operating Partnership
anticipates that interest expense will approximate $475.0 million to $495.0 million for the year ending December 31, 2009. The above assumption is based on current expectations and is forward-looking.

Income and other tax expense from continuing operations decreased approximately $0.9 million or 28.8% primarily due to a change in
estimate for Texas state taxes, partially offset by an increase in business taxes for Washington, D.C. The Operating Partnership anticipates that income and other tax expense will approximate $3.0 million to $4.0 million for the year ending
December 31, 2009. The above assumption is based on current expectations and is forward-looking.

Loss from
investments in unconsolidated entities increased approximately $0.1 million as compared to the quarter ended March 31, 2008 primarily due to the recognition of operating losses from one of the Operating Partnerships partially owned
unconsolidated entities.

Net gain on sales of unconsolidated entities increased approximately $2.8 million between the
periods under comparison as the Operating Partnership recognized a $2.8 million gain on the sale of an unconsolidated institutional joint venture property during the quarter ended March 31, 2009.

Discontinued operations, net decreased approximately $67.7 million or 52.2% between the periods under comparison. This decrease is
primarily due to a decrease in the number and mix of properties sold during the quarter ended



31



---

March 31, 2009 compared to the same period in 2008 and the operations of those properties. See Note 13 in the Notes to Consolidated Financial Statements
for further discussion.

Liquidity and Capital Resources

As of January 1, 2009, the Operating Partnership had approximately $890.8 million of cash and cash equivalents and $1.29 billion available under its revolving credit facility (net of $130.0
million which was restricted/dedicated to support letters of credit and $75.0 million which had been committed by a now bankrupt financial institution and is not available for borrowing). After taking into effect the various transactions discussed
in the following paragraphs and the net cash provided by operating activities, the Operating Partnerships cash and cash equivalents balance at March 31, 2009 was approximately $428.6 million and the amount available on the Operating
Partnerships revolving credit facility was $1.31 billion (net of $115.2 million which was restricted/dedicated to support letters of credit and net of the $75.0 million discussed above). In 2008, the Operating Partnership built a significant
cash and cash equivalents balance as a direct result of its decision to pre-fund its 2008 and 2009 debt maturities with the closing of three secured mortgage loan pools totaling $1.6 billion. The decline in the Operating Partnerships cash and
cash equivalents balance since December 31, 2008 is a direct result of the application of the pre-funded cash on hand towards the Operating Partnerships debt tender and debt repurchase activities.

During the quarter ended March 31, 2009, the Operating Partnership generated proceeds from various transactions, which included the
following:



| | ¡ |  | Disposed of 13 properties and one condominium unit, receiving net proceeds of approximately $133.2 million;
| | - |  | -----------------------------------------------------------------------------------------------------------

| | ¡ |  | Obtained $57.7 million of new mortgage loans primarily on development properties; and
| | - |  | -------------------------------------------------------------------------------------

| | ¡ |  | Issued approximately 0.2 million Units and received net proceeds of $2.9 million.
| | - |  | ---------------------------------------------------------------------------------

During the quarter ended March 31, 2009, the above proceeds were primarily utilized to:



| | ¡ |  | Invest $82.2 million primarily in development projects;
| | - |  | -------------------------------------------------------

| | ¡ |  | Repurchase 47,450 OP Units, utilizing cash of $1.1 million (see Note 3);
| | - |  | ------------------------------------------------------------------------

| | ¡ |  | Repurchase $307.8 million of fixed rate public notes; and
| | - |  | ---------------------------------------------------------

| | ¡ |  | Repay $146.2 million of mortgage loans.
| | - |  | ---------------------------------------

Depending on its analysis of market prices, economic conditions and other opportunities for the investment of available capital, the Company may repurchase its Common Shares pursuant to its existing share repurchase
program authorized by the Board of Trustees. EQR repurchased $1.1 million (47,450 shares at an average price per share of $23.69) of its Common Shares during the quarter ended March 31, 2009. Concurrent with these transactions, the Operating
Partnership repurchased and retired 47,450 OP Units previously issued to EQR. As of March 31, 2009, EQR had authorization to repurchase an additional $466.5 million of its shares. See Note 3 in the Notes to Consolidated Financial Statements for
further discussion.

The Operating Partnerships total debt summary and debt maturity schedules as of March 31,
2009 are as follows:



32



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Debt Summary as of March 31, 2009

(Amounts in thousands)



|                                      |  |             |            |            |        |                            |       |                                          |     
|------------------------------------- |  | ----------- | ---------- | ---------- | ------ | -------------------------- | ----- | ---------------------------------------- | ----
|                                      |  | Amounts (1) |            | % of Total |        | Weighted  AverageRates (1) |       | WeightedAverage    Maturities    (years)
|                                      |  |             |            |           
|Secured                               |  | $           | 4,941,277  |            | 49.0%  |                            | 4.84% |                                          | 8.3 
|Unsecured                             |  |             | 5,141,358  |            | 51.0%  |                            | 5.42% |                                          | 5.5 
|                                      |  |             |            |            |        |                            |       |                                          |     
|Total                                 |  | $           | 10,082,635 |            | 100.0% |                            | 5.14% |                                          | 6.8 
|                                      |  |             |            |            |        |                            |       |                                          |     
|                                      |  |             |            |           
|Fixed Rate Debt:                      |  |             |            |            |        |                            |       |                                          |     
|Secured  Conventional                |  | $           | 3,681,350  |            | 36.5%  |                            | 5.97% |                                          | 7.2 
|Unsecured  Public/Private            |  |             | 4,429,508  |            | 43.9%  |                            | 5.99% |                                          | 5.7 
|Unsecured  Tax Exempt                |  |             | 75,790     |            | 0.8%   |                            | 5.20% |                                          | 20.2
|                                      |  |             |            |            |        |                            |       |                                          |     
|Fixed Rate Debt                       |  |             | 8,186,648  |            | 81.2%  |                            | 5.97% |                                          | 6.5 
|                                      |  |             |            |            |        |                            |       |                                          |     
|                                      |  |             |            |           
|Floating Rate Debt:                   |  |             |            |            |        |                            |       |                                          |     
|Secured  Conventional                |  |             | 624,022    |            | 6.2%   |                            | 2.11% |                                          | 2.1 
|Secured  Tax Exempt                  |  |             | 635,905    |            | 6.3%   |                            | 0.79% |                                          | 21.3
|Unsecured  Public/Private            |  |             | 600,460    |            | 6.0%   |                            | 1.49% |                                          | 1.3 
|Unsecured  Tax Exempt                |  |             | 35,600     |            | 0.3%   |                            | 0.46% |                                          | 19.7
|Unsecured  Revolving Credit Facility |  |             | -          |            | -      |                            | -     |                                          | 2.8 
|                                      |  |             |            |            |        |                            |       |                                          |     
|Floating Rate Debt                    |  |             | 1,895,987  |            | 18.8%  |                            | 1.43% |                                          | 8.3 
|                                      |  |             |            |            |        |                            |       |                                          |     
|                                      |  |             |            |           
|Total                                 |  | $           | 10,082,635 |            | 100.0% |                            | 5.14% |                                          | 6.8 
|                                      |  |             |            |            |        |                            |       |                                          |     



|(1) | Net of the effect of any derivative instruments. Weighted average rates are for the quarter ended March 31, 2009.
|--- | -----------------------------------------------------------------------------------------------------------------

Note: The Operating Partnership capitalized interest of approximately $10.6 million and $14.7 million during the quarters ended March 31, 2009 and
2008, respectively.

Debt Maturity Schedule as of March 31, 2009

(Amounts in thousands)



|            |  |               |           |                  |   |           |  |            |            |                                               |        |                                          |       |  |      
|----------- |  | ------------- | --------- | ---------------- | - | --------- |  | ---------- | ---------- | --------------------------------------------- | ------ | ---------------------------------------- | ----- |  | -----
|Year        |  | FixedRate (1) |           | FloatingRate (1) |   | Total     |  | % of Total |            | Weighted Average  Rates on FixedRate
Debt (1) |        | Weighted Average  Rates onTotal Debt
(1)
|            |  |               |           |                  |   |          
|2009        |  | $             | 155,979   |                  | $ | 463,187   |  | $          | 619,166    |                                               | 6.1%   |                                          | 7.53% |  | 4.03%
|2010    (2) |  |               | 274,993   |                  |   | 670,053   |  |            | 945,046    |                                               | 9.4%   |                                          | 7.23% |  | 3.22%
|2011    (3) |  |               | 1,253,533 |                  |   | 78,417    |  |            | 1,331,950  |                                               | 13.2%  |                                          | 5.56% |  | 5.35%
|2012        |  |               | 924,579   |                  |   | 3,673     |  |            | 928,252    |                                               | 9.2%   |                                          | 6.01% |  | 6.01%
|2013        |  |               | 565,865   |                  |   | -         |  |            | 565,865    |                                               | 5.6%   |                                          | 5.93% |  | 5.93%
|2014        |  |               | 516,959   |                  |   | -         |  |            | 516,959    |                                               | 5.1%   |                                          | 5.28% |  | 5.28%
|2015        |  |               | 355,081   |                  |   | -         |  |            | 355,081    |                                               | 3.5%   |                                          | 6.41% |  | 6.41%
|2016        |  |               | 1,088,709 |                  |   | -         |  |            | 1,088,709  |                                               | 10.8%  |                                          | 5.32% |  | 5.32%
|2017        |  |               | 1,345,997 |                  |   | 456       |  |            | 1,346,453  |                                               | 13.4%  |                                          | 5.87% |  | 5.87%
|2018        |  |               | 335,500   |                  |   | 44,677    |  |            | 380,177    |                                               | 3.8%   |                                          | 5.96% |  | 5.61%
|2019+       |  |               | 1,369,453 |                  |   | 635,524   |  |            | 2,004,977  |                                               | 19.9%  |                                          | 5.85% |  | 4.91%
|            |  |               |           |                  |   |           |  |            |            |                                               |        |                                          |       |  |      
|Total       |  | $             | 8,186,648 |                  | $ | 1,895,987 |  | $          | 10,082,635 |                                               | 100.0% |                                          | 5.83% |  | 5.18%
|            |  |               |           |                  |   |           |  |            |            |                                               |        |                                          |       |  |      



|(1) | Net of the effect of any derivative instruments. Weighted average rates are as of March 31, 2009.
|--- | -------------------------------------------------------------------------------------------------

|(2) | Includes the Operating Partnerships $500.0 million floating rate term loan facility, which matures on October 5, 2010, subject to two one-year
extension options exercisable by the Operating Partnership.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Includes $531.1 million face value of 3.85% convertible unsecured debt with a final maturity of 2026. The notes are callable by the Operating Partnership on or
after August 18, 2011. The notes are putable by the holders on August 18, 2011, August 15, 2016 and August 15, 2021.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The following table provides a summary of the Operating Partnerships unsecured debt as of March 31, 2009:



33



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Unsecured Debt Summary as of March 31, 2009

(Amounts in thousands)



|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|------------------------------- |  | ----------- |  | -------- |  | ------- |  | -------------- | --------- | ------------------------------- | - | ---------- |  | - | ---------
|                                |  | CouponRate  |  | DueDate  |  |         |  | Face    Amount |           | Unamortized  Premium/(Discount) |   | NetBalance
|Fixed Rate Notes:               |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  | 4.750%      |  | 06/15/09 |  | (1)     |  | $              | 122,239   |                                 | $ | (26)       |  | $ | 122,213  
|                                |  | 6.950%      |  | 03/02/11 |  | (2)     |  |                | 114,806   |                                 |   | 1,914      |  |   | 116,720  
|                                |  | 6.625%      |  | 03/15/12 |  |         |  |                | 400,000   |                                 |   | (868)      |  |   | 399,132  
|                                |  | 5.500%      |  | 10/01/12 |  |         |  |                | 350,000   |                                 |   | (1,208)    |  |   | 348,792  
|                                |  | 5.200%      |  | 04/01/13 |  |         |  |                | 400,000   |                                 |   | (473)      |  |   | 399,527  
|                                |  | 5.250%      |  | 09/15/14 |  |         |  |                | 500,000   |                                 |   | (337)      |  |   | 499,663  
|                                |  | 6.584%      |  | 04/13/15 |  |         |  |                | 300,000   |                                 |   | (672)      |  |   | 299,328  
|                                |  | 5.125%      |  | 03/15/16 |  |         |  |                | 500,000   |                                 |   | (372)      |  |   | 499,628  
|                                |  | 5.375%      |  | 08/01/16 |  |         |  |                | 400,000   |                                 |   | (1,360)    |  |   | 398,640  
|                                |  | 5.750%      |  | 06/15/17 |  |         |  |                | 650,000   |                                 |   | (4,196)    |  |   | 645,804  
|                                |  | 7.125%      |  | 10/15/17 |  |         |  |                | 150,000   |                                 |   | (554)      |  |   | 149,446  
|                                |  | 7.570%      |  | 08/15/26 |  |         |  |                | 140,000   |                                 |   | -          |  |   | 140,000  
|                                |  | 3.850%      |  | 08/15/26 |  | (3)     |  |                | 531,092   |                                 |   | (20,477)   |  |   | 510,615  
|Floating Rate Adjustments       |  |             |  |          |  | (1)     |  |                | (100,000) |                                 |   | -          |  |   | (100,000)
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  |          |  |         |  |                | 4,458,137 |                                 |   | (28,629)   |  |   | 4,429,508
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|Fixed Rate Tax Exempt Notes:    |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  | 5.200%      |  | 06/15/29 |  | (4)     |  |                | 75,790    |                                 |   | -          |  |   | 75,790   
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  |          |  |        
|Floating Rate Tax Exempt Notes: |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  | 7-Day SIFMA |  | 12/15/28 |  | (4)     |  |                | 35,600    |                                 |   | -          |  |   | 35,600   
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  |          |  |        
|Floating Rate Notes:            |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  | 06/15/09 |  | (1)     |  |                | 100,000   |                                 |   | -          |  |   | 100,000  
|FAS 133 Adjustments  net       |  |             |  |          |  | (1)     |  |                | 460       |                                 |   | -          |  |   | 460      
|Term Loan Facility              |  | LIBOR+0.50% |  | 10/05/10 |  | (4) (5) |  |                | 500,000   |                                 |   | -          |  |   | 500,000  
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  |          |  |         |  |                | 600,460   |                                 |   | -          |  |   | 600,460  
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  |          |  |        
|Revolving Credit Facility:      |  | LIBOR+0.50% |  | 02/28/12 |  | (6)     |  |                | -         |                                 |   | -          |  |   | -        
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          
|                                |  |             |  |          |  |        
|Total Unsecured Debt            |  |             |  |          |  |         |  | $              | 5,169,987 |                                 | $ | (28,629)   |  | $ | 5,141,358
|                                |  |             |  |          |  |         |  |                |           |                                 |   |            |  |   |          

Note: SIFMA stands for the Securities Industry and Financial Markets Association and is the
tax-exempt index equivalent of LIBOR.



| | (1) | $100.0 million in fair value interest rate swaps converts a portion of the 4.750% notes due June 15, 2009 to a floating interest rate. On January 27,
2009, the Operating Partnership repurchased $105.2 million of these notes at par pursuant to a cash tender offer announced on January 16, 2009. In conjunction with the tender offer, the Operating Partnership terminated $50.0 million of the
$150.0 million in fair value swaps outstanding at January 1, 2009 and received approximately $0.4 million.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (2) | On January 27, 2009, the Operating Partnership repurchased $185.2 million of these notes at par pursuant to a cash tender offer announced on
January 16, 2009.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (3) | Convertible notes mature on August 15, 2026. The notes are callable by the Operating Partnership on or after August 18, 2011. The notes are putable by
the holders on August 18, 2011, August 15, 2016 and August 15, 2021. During the quarter ended March 31, 2009, the Operating Partnership repurchased $17.5 million of these notes at a discount to par of approximately 11.6% and
recognized a gain on early debt extinguishment of $2.0 million. Effective January 1, 2009, the Operating Partnership adopted FSP APB 14-1, which requires companies to expense the implied option value inherent in convertible debt. In conjunction
with this adoption, the Operating Partnership recorded an adjustment of $17.3 million to the beginning balance of the discount on its convertible notes.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (4) | Notes are private. All other unsecured debt is public.
| | --- | ------------------------------------------------------

| | (5) | Represents the Operating Partnerships $500.0 million term loan facility, which matures on October 5, 2010, subject to two one-year extension options
exercisable by the Operating Partnership.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (6) | As of March 31, 2009, there was no amount outstanding and approximately $1.31 billion available on the Operating Partnerships unsecured revolving
credit facility.
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

As of April 30, 2009, an unlimited amount of debt securities remains available for
issuance by the Operating Partnership under a registration statement that became automatically effective upon filing with the SEC in December



34



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2008 (under SEC regulations enacted in 2005, the registration statement automatically expires on December 21, 2011 and does not contain a maximum
issuance amount). As of April 30, 2009, an unlimited amount of equity securities remains available for issuance by EQR under a registration statement the SEC declared effective in December 2008 (under SEC regulations enacted in 2005, the
registration statement automatically expires on December 15, 2011 and does not contain a maximum issuance amount). Per the terms of ERPOPs partnership agreement, EQR contributes the net proceeds of all equity offerings to the capital of
the Operating Partnership in exchange for additional OP Units (on a one-for-one Common Share per OP Unit basis) or preference units (on a one-for-one preferred share per preference unit basis).

The Operating Partnerships Consolidated Debt-to-Total Market Capitalization Ratio as of March 31, 2009 is
presented in the following table. The Operating Partnership calculates the equity component of its market capitalization as the sum of (i) the total outstanding Units at the equivalent market value of the closing price of EQRs Common
Shares on the New York Stock Exchange; (ii) the OP Unit Equivalent of all convertible preference units/interests; and (iii) the liquidation value of all perpetual preference units outstanding.

Capital Structure as of March 31, 2009

(Amounts in thousands except for unit and per unit amounts)



|                                         |  |   |             |  |   |            |  |        |  |       
|---------------------------------------- |  | - | ----------- |  | - | ---------- |  | ------ |  | ------
|Secured Debt                             |  |   |             |  | $ | 4,941,277  |  | 49.0%  |  |       
|Unsecured Debt                           |  |   |             |  |   | 5,141,358  |  | 51.0%  |  |       
|                                         |  |   |             |  |   |            |  |        |  |       
|Total Debt                               |  |   |             |  |   | 10,082,635 |  | 100.0% |  | 64.6% 
|                                         |  |   |             | 
|Units                                    |  |   | 290,127,346 |  |   |            |  |        |  |       
|OP Unit Equivalents (see below)          |  |   | 405,555     |  |   |            |  |        |  |       
|                                         |  |   |             |  |   |            |  |        |  |       
|Total outstanding at quarter-end         |  |   | 290,532,901 |  |   |            |  |        |  |       
|EQR Common Share Price at March 31, 2009 |  | $ | 18.35       |  |   |            |  |        |  |       
|                                         |  |   |             |  |   |            |  |        |  |       
|                                         |  |   |             |  |   | 5,331,279  |  | 96.4%  |  |       
|Perpetual Preference Units (see below)   |  |   |             |  |   | 200,000    |  | 3.6%   |  |       
|                                         |  |   |             |  |   |            |  |        |  |       
|Total Equity                             |  |   |             |  |   | 5,531,279  |  | 100.0% |  | 35.4% 
|                                         |  |   |             | 
|Total Market Capitalization              |  |   |             |  | $ | 15,613,914 |  |        |  | 100.0%

Convertible Preference Units as of March 31, 2009

(Amounts in thousands except for unit and per unit amounts)



|                                   |  |                 |  |                   |  |                   |       |                          |   |                        |  |                      |     |                  |       |                     |          |  |        
|---------------------------------- |  | --------------- |  | ----------------- |  | ----------------- | ----- | ------------------------ | - | ---------------------- |  | -------------------- | --- | ---------------- | ----- | ------------------- | -------- |  | -------
|Series                             |  | Redemption Date |  | Outstanding Units |  | Liquidation Value |       | Annual Dividend Per Unit |   | Annual Dividend Amount |  | Weighted AverageRate |     | Conversion Ratio |       | OP Unit Equivalents
|Preference Units:                  |  |                 |  |                   |  |                   |       |                          |   |                        |  |                      |     |                  |       |                     |          |  |        
|7.00% Series E                     |  | 11/1/98         |  | 328,466           |  | $                 | 8,212 |                          | $ | 1.75                   |  | $                    | 575 |                  |       |                     | 1.1128   |  | 365,517
|7.00% Series H                     |  | 6/30/98         |  | 22,459            |  |                   | 561   |                          |   | 1.75                   |  |                      | 39  |                  |       |                     | 1.4480   |  | 32,521 
|Junior Preference Units:           |  |                 |  |                   |  |                   |       |                          |   |                        |  |                      |     |                  |       |                     |          |  |        
|8.00% Series B                     |  | 7/29/09         |  | 7,367             |  |                   | 184   |                          |   | 2.00                   |  |                      | 15  |                  |       |                     | 1.020408 |  | 7,517  
|                                   |  |                 |  |                   |  |                   |       |                          |   |                        |  |                      |     |                  |       |                     |          |  |        
|Total Convertible Preference Units |  |                 |  | 358,292           |  | $                 | 8,957 |                          |   |                        |  | $                    | 629 |                  | 7.02% |                     |          |  | 405,555



Perpetual Preference
Units as of March 31, 2009

(Amounts in thousands except for unit and per unit amounts)



|                                 |  |                  |  |                    |  |                    |         |                            |   |                          |  |                       |        |  |      
|-------------------------------- |  | ---------------- |  | ------------------ |  | ------------------ | ------- | -------------------------- | - | ------------------------ |  | --------------------- | ------ |  | -----
|Series                           |  | Redemption  Date |  | Outstanding  Units |  | Liquidation  Value |         | Annual  Dividend  Per Unit |   | Annual  Dividend  Amount |  | Weighted  AverageRate
|Preference Units:                |  |                  |  |                    |  |                    |         |                            |   |                          |  |                       |        |  |      
|8.29% Series K                   |  | 12/10/26         |  | 1,000,000          |  | $                  | 50,000  |                            | $ | 4.145                    |  | $                     | 4,145  |  |      
|6.48% Series N                   |  | 6/19/08          |  | 600,000            |  |                    | 150,000 |                            |   | 16.20                    |  |                       | 9,720  |  |      
|                                 |  |                  |  |                    |  |                    |         |                            |   |                          |  |                       |        |  |      
|Total Perpetual Preference Units |  |                  |  | 1,600,000          |  | $                  | 200,000 |                            |   |                          |  | $                     | 13,865 |  | 6.93%



35



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The Operating Partnership generally expects to meet its short-term liquidity
requirements, including capital expenditures related to maintaining its existing properties and certain scheduled unsecured note and mortgage note repayments, through its working capital, net cash provided by operating activities and borrowings
under its revolving credit facility. Under normal operating conditions, the Operating Partnership considers its cash provided by operating activities to be adequate to meet operating requirements and payments of distributions. However, there may be
times when the Operating Partnership experiences shortfalls in its coverage of distributions, which may cause the Operating Partnership to consider reducing its distributions and/or using the proceeds from property dispositions or additional
financing transactions to make up the difference. Should these shortfalls occur for lengthy periods of time or be material in nature, the Operating Partnerships financial condition may be adversely affected and it may not be able to maintain
its current distribution levels. The Operating Partnership also expects to meet its long-term liquidity requirements, such as scheduled unsecured note and mortgage debt maturities, property acquisitions, financing of construction and development
activities and capital improvements through the issuance of unsecured notes and equity securities, including additional OP Units, and proceeds received from the disposition of certain properties as well as joint ventures. In addition, the Operating
Partnership has significant unencumbered properties available to secure additional mortgage borrowings in the event that the public capital markets are unavailable or the cost of alternative sources of capital is too high. The fair value of and cash
flow from these unencumbered properties are in excess of the requirements the Operating Partnership must maintain in order to comply with covenants under its unsecured notes and line of credit. Of the $18.7 billion in investment in real estate on
the Operating Partnerships balance sheet at March 31, 2009, $11.1 billion or 59.6%, was unencumbered. However, there can be no assurances that these sources of capital will be available to the Operating Partnership in the future.

As of April 30, 2009, the Operating Partnerships senior debt credit ratings from Standard & Poors
(S&P), Moodys and Fitch are BBB+, Baa1 and A-, respectively. As of April 30, 2009, EQRs preferred equity ratings from S&P, Moodys and Fitch are BBB-, Baa2 and BBB+, respectively.

The Operating Partnership has a long-term revolving credit facility with available borrowings as of March 31, 2009 of $1.31 billion
that matures in February 2012 (see Note 10 in the Notes to Consolidated Financial Statements for further discussion). This facility may, among other potential uses, be used to fund property acquisitions, costs for certain properties under
development and short-term liquidity requirements. As of April 30, 2009, no amounts were outstanding under this facility.

See Note 16 in the Notes to Consolidated Financial Statements for discussion of the events which occurred subsequent to March 31, 2009.

Capitalization of Fixed Assets and Improvements to Real Estate

Our policy
with respect to capital expenditures is generally to capitalize expenditures that improve the value of the property or extend the useful life of the component asset of the property. We track improvements to real estate in two major categories and
several subcategories:



| | ¡ |  | Replacements(inside the unit). These include:
| | - |  | ---------------------------------------------

| | ¡ |  | flooring such as carpets, hardwood, vinyl, linoleum or tile;
| | - |  | ------------------------------------------------------------

| | ¡ |  | appliances;
| | - |  | -----------

| | ¡ |  | mechanical equipment such as individual furnace/air units, hot water heaters, etc;
| | - |  | ----------------------------------------------------------------------------------

| | ¡ |  | furniture and fixtures such as kitchen/bath cabinets, light fixtures, ceiling fans, sinks, tubs, toilets, mirrors, countertops, etc; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | blinds/shades.
| | - |  | --------------

All replacements are depreciated over a five-year estimated useful life. We expense as incurred all make-ready maintenance and turnover costs such as cleaning, interior painting of individual units and the repair of any replacement item
noted above.



| | ¡ |  | Building improvements (outside the unit). These include:
| | - |  | --------------------------------------------------------

| | ¡ |  | roof replacement and major repairs;
| | - |  | -----------------------------------

| | ¡ |  | paving or major resurfacing of parking lots, curbs and sidewalks;
| | - |  | -----------------------------------------------------------------

| | ¡ |  | amenities and common areas such as pools, exterior sports and playground equipment, lobbies, clubhouses, laundry rooms, alarm and security systems and offices;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

| | ¡ |  | major building mechanical equipment systems;
| | - |  | --------------------------------------------

| | ¡ |  | interior and exterior structural repair and exterior painting and siding;
| | - |  | -------------------------------------------------------------------------



36



---

| | ¡ |  | major landscaping and grounds improvement; and
| | - |  | ----------------------------------------------

| | ¡ |  | vehicles and office and maintenance equipment.
| | - |  | ----------------------------------------------

All building improvements are depreciated over a five to ten-year estimated useful life. We capitalize building improvements and upgrades only if the item: (i) exceeds $2,500 (selected projects must exceed
$10,000); (ii) extends the useful life of the asset; and (iii) improves the value of the asset.

For the quarter
ended March 31, 2009, our actual improvements to real estate totaled approximately $26.6 million. This includes the following (amounts in thousands except for unit and per unit amounts):

Capitalized Improvements to Real Estate

For the Quarter Ended March 31,
2009



|                               |  |                    |  |              |        |                  |   |                          |  |                  |       |       |   |                  |  |   |        |  |   |    
|------------------------------ |  | ------------------ |  | ------------ | ------ | ---------------- | - | ------------------------ |  | ---------------- | ----- | ----- | - | ---------------- |  | - | ------ |  | - | ---
|                               |  | Total    Units (1) |  | Replacements |        | Avg.    Per Unit |   | Building    Improvements |  | Avg.    Per Unit |       | Total |   | Avg.    Per Unit
|                               |  |                    |  |              |        |                  |  
|Established Properties (2)     |  | 112,050            |  | $            | 8,556  |                  | $ | 76                       |  | $                | 6,398 |       | $ | 57               |  | $ | 14,954 |  | $ | 133
|                               |  |                    |  |              |        |                  |  
|New Acquisition Properties (3) |  | 13,784             |  |              | 724    |                  |   | 54                       |  |                  | 1,642 |       |   | 121              |  |   | 2,366  |  |   | 175
|                               |  |                    |  |              |        |                  |  
|Other (4)                      |  | 6,135              |  |              | 8,125  |                  |   |                          |  |                  | 1,199 |       |   |                  |  |   | 9,324  |  |   |    
|                               |  |                    |  |              |        |                  |   |                          |  |                  |       |       |   |                  |  |   |        |  |   |    
|                               |  |                    |  |              |        |                  |  
|Total                          |  | 131,969            |  | $            | 17,405 |                  |   |                          |  | $                | 9,239 |       |   |                  |  | $ | 26,644 |  |   |    
|                               |  |                    |  |              |        |                  |   |                          |  |                  |       |       |   |                  |  |   |        |  |   |    



|(1) | Total units  Excludes 9,560 unconsolidated units and 4,703 military housing (fee managed) units, for which capitalized improvements to real estate are
self-funded and do not consolidate into the Operating Partnerships results.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Established Properties  Wholly Owned Properties acquired prior to January 1, 2007.
|--- | -----------------------------------------------------------------------------------

|(3) | New Acquisition Properties  Wholly Owned Properties acquired during 2007, 2008 and 2009. Per unit amounts are based on a weighted average of 13,524 units.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Other  Primarily includes properties either partially owned or sold during the period, commercial space and corporate housing. Also includes $7.4 million
included in replacements spent on various assets related to major renovations and repositioning of these assets.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

For 2009, the Operating Partnership estimates an annual stabilized run rate of approximately $925 per unit of capital expenditures for its established properties. The above assumption is based on current expectations and is forward-looking.

During the quarter ended March 31, 2009, the Operating Partnerships total non-real estate capital additions,
such as computer software, computer equipment, and furniture and fixtures and leasehold improvements to the Operating Partnerships property management offices and its corporate offices, were approximately $0.7 million. The Operating
Partnership expects to fund approximately $1.3 million in additions to non-real estate property for the remainder of 2009. The above assumption is based on current expectations and is forward-looking.

Improvements to real estate and additions to non-real estate property are generally funded from net cash provided by operating activities and from
investment cash flow.

Derivative Instruments

In the normal course of business, the Operating Partnership is exposed to the effect of interest rate changes. The Operating Partnership seeks to limit these risks by following established risk
management policies and procedures including the use of derivatives to hedge interest rate risk on debt instruments.

The
Operating Partnership has a policy of only entering into contracts with major financial institutions based upon their credit ratings and other factors. When viewed in conjunction with the underlying and offsetting exposure that the derivatives are
designed to hedge, the Operating Partnership has not sustained a material loss from those instruments nor does it anticipate any material adverse effect on its net income or financial position in the future from the use of derivatives it currently
has in place.

See Note 11 in the Notes to Consolidated Financial Statements for additional discussion of derivative
instruments at March 31, 2009.



37



---

Other

Total distributions paid in April 2009 amounted to $142.6 million (excluding distributions on Partially Owned Properties), which included certain distributions declared during the first quarter
ended March 31, 2009.

Off-Balance Sheet Arrangements and Contractual Obligations

The Operating Partnership has co-invested in various properties that are unconsolidated and accounted for under the equity method of
accounting. Management does not believe these investments have a materially different impact upon the Operating Partnerships liquidity, cash flows, capital resources, credit or market risk than its property management and ownership activities.
During 2000 and 2001, the Operating Partnership entered into institutional ventures with an unaffiliated partner. At the respective closing dates, the Operating Partnership sold and/or contributed 45 properties containing 10,846 units to these
ventures and retained a 25% ownership interest in the ventures. The Operating Partnerships joint venture partner contributed cash equal to 75% of the agreed-upon equity value of the properties comprising the ventures, which was then
distributed to the Operating Partnership. The Operating Partnerships strategy with respect to these ventures was to reduce its concentration of properties in a variety of markets. The Operating Partnership sold three properties consisting of
670 units and one property consisting of 400 units during the years ended December 31, 2008 and 2007, respectively. In addition, the Operating Partnership sold one property consisting of 216 units during the quarter ended March 31, 2009.
The Operating Partnership and its joint venture partner currently intend to wind up these investments over the next few years by selling the related assets. The Operating Partnership cannot estimate what, if any, profit it will receive from these
dispositions or if the Operating Partnership will in fact receive its equity back.

As of March 31, 2009, the
Operating Partnership has eight projects totaling 2,826 units in various stages of development with estimated completion dates ranging through June 30, 2011. The development agreements currently in place are discussed in detail in Note 14 of
the Operating Partnerships Consolidated Financial Statements.

See also Notes 2 and 6 in the Notes to Consolidated
Financial Statements for additional discussion regarding the Operating Partnerships investments in partially owned entities.

The Operating Partnerships contractual obligations for the next five years and thereafter have not changed materially from the amounts and disclosures included in its annual report on Form 10-K, other than as it relates to scheduled
debt maturities. See the updated debt maturity schedule included in Liquidity and Capital Resources for further discussion.

Critical Accounting
Policies and Estimates

The preparation of financial statements in conformity with accounting principles generally
accepted in the United States requires management to use judgment in the application of accounting policies, including making estimates and assumptions. If our judgment or interpretation of the facts and circumstances relating to various
transactions had been different or different assumptions were made, it is possible that different accounting policies would have been applied, resulting in different financial results or different presentation of our financial statements.

The Operating Partnership has identified six significant accounting policies as critical accounting policies. These
critical accounting policies are those that have the most impact on the reporting of our financial condition and those requiring significant judgments and estimates. With respect to these critical accounting policies, management believes that the
application of judgments and estimates is consistently applied and produces financial information that fairly presents the results of operations for all periods presented. The six critical accounting policies are:

Impairment of Long-Lived Assets, Including Goodwill

The Operating Partnership periodically evaluates its long-lived assets, including its investments in real estate and goodwill, for indicators of permanent impairment. The judgments regarding the existence of
impairment indicators are based on factors such as operational performance, market conditions and legal and environmental concerns, as well as the Operating Partnerships ability to hold and its intent with regard to each asset. Future events
could occur which would cause the Operating Partnership to conclude that impairment indicators exist and an impairment loss is warranted.

Depreciation of Investment in Real Estate

The Operating Partnership depreciates the building component of
its investment in real estate over a 30-year estimated useful life, building improvements over a 5-year to 10-year estimated useful life and both the furniture, fixtures



38



---

and equipment and replacements components over a 5-year estimated useful life, all of which are judgmental determinations.

Cost Capitalization

See the Capitalization of Fixed Assets and Improvements to Real Estate section for discussion of the policy with respect to capitalization vs. expensing of fixed asset/repair and maintenance costs. In addition, the Operating
Partnership capitalizes the payroll and associated costs of employees directly responsible for and who spend all of their time on the supervision of major capital and/or renovation projects. These costs are reflected on the balance sheet as an
increase to depreciable property.

The Operating Partnership follows the guidance in SFAS No. 67, Accounting for
Costs and Initial Rental Operations of Real Estate Projects, for all development projects and uses its professional judgment in determining whether such costs meet the criteria for capitalization or must be expensed as incurred. The Operating
Partnership capitalizes interest, real estate taxes and insurance and payroll and associated costs for those individuals directly responsible for and who spend all of their time on development activities, with capitalization ceasing no later than 90
days following issuance of the certificate of occupancy. These costs are reflected on the balance sheet as construction-in-progress for each specific property. The Operating Partnership expenses as incurred all payroll costs of on-site employees
working directly at our properties, except as noted above on our development properties prior to certificate of occupancy issuance and on specific major renovations at selected properties when additional incremental employees are hired.

Fair Value of Financial Instruments, Including Derivative Instruments

The Operating Partnership follows the guidance under SFAS No. 157 when valuing its financial instruments. The valuation of financial instruments under SFAS No. 107 and SFAS
No. 133, as amended, requires the Operating Partnership to make estimates and judgments that affect the fair value of the instruments. The Operating Partnership, where possible, bases the fair values of its financial instruments, including its
derivative instruments, on listed market prices and third party quotes. Where these are not available, the Operating Partnership bases its estimates on current instruments with similar terms and maturities or on other factors relevant to the
financial instruments.

Revenue Recognition

Rental income attributable to residential leases is recorded on a straight-line basis, which is not materially different than if it were recorded when due from residents and recognized monthly as
it is earned. Leases entered into between a resident and a property for the rental of an apartment unit are generally year-to-year, renewable upon consent of both parties on an annual or monthly basis. Fee and asset management revenue and interest
income are recorded on an accrual basis.

Share-Based Compensation

The Company accounts for its share-based compensation in accordance with SFAS No. 123(R), Share-Based Payment, effective
January 1, 2006, which results in compensation expense being recorded based on the fair value of the share compensation granted.

Any EQR Common Shares issued pursuant to EQRs incentive equity compensation and employee share purchase plans will result in the Operating Partnership issuing OP Units to EQR on a one-for-one basis, with the
Operating Partnership receiving the net cash proceeds of such issuances.

The Black-Scholes option valuation model was
developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. This model is only one method of valuing options and the Companys use of this model should not be interpreted as an
endorsement of its accuracy. Because the Companys share options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate,
in managements opinion, the existing models do not necessarily provide a reliable single measure of the fair value of its share options and the actual value of the options may be significantly different.



39



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Funds From Operations

For the quarter ended March 31, 2009, Funds From Operations (FFO) available to Units decreased by $2.1 million or 1.2%, as compared to the quarter ended March 31, 2008.

The following is a reconciliation of net income to FFO available to Units for the quarters ended March 31, 2009 and
2008:

Funds From Operations

(Amounts in thousands)

(Unaudited)



|                                                                                       |  |                         |          |          |   |          
|-------------------------------------------------------------------------------------- |  | ----------------------- | -------- | -------- | - | ---------
|                                                                                       |  | Quarter Ended March 31,
|                                                                                       |  | 2009                    |          | 2008 (3)
|Net income                                                                             |  | $                       | 85,421   |          | $ | 147,528  
|Adjustments:                                                                           |  |                         |          |          |   |          
|Net loss (income) attributable to Noncontrolling Interests Partially Owned Properties |  |                         | 69       |          |   | (268)    
|Depreciation                                                                           |  |                         | 150,045  |          |   | 141,195  
|Depreciation  Non-real estate additions                                               |  |                         | (1,898)  |          |   | (2,051)  
|Depreciation  Partially Owned and Unconsolidated Properties                           |  |                         | 183      |          |   | 1,034    
|Net gain on sales of unconsolidated entities                                           |  |                         | (2,765)  |          |   | -        
|Discontinued operations:                                                               |  |                         |          |          |   |          
|Depreciation                                                                           |  |                         | 443      |          |   | 6,385    
|Net gain on sales of discontinued operations                                           |  |                         | (61,871) |          |   | (122,517)
|Net incremental (loss) gain on sales of condominium units                              |  |                         | (64)     |          |   | 366      
|                                                                                       |  |                         |          |          |   |          
|                                                                                       |  |                        
|FFO (1) (2)                                                                            |  |                         | 169,563  |          |   | 171,672  
|Preferred distributions                                                                |  |                         | (3,624)  |          |   | (3,637)  
|                                                                                       |  |                         |          |          |   |          
|                                                                                       |  |                        
|FFO available to Units (1) (2)                                                         |  | $                       | 165,939  |          | $ | 168,035  
|                                                                                       |  |                         |          |          |   |          



|(1) | The National Association of Real Estate Investment Trusts (NAREIT) defines funds from operations (FFO) (April 2002 White Paper) as net
income (computed in accordance with accounting principles generally accepted in the United States (GAAP)), excluding gains (or losses) from sales of depreciable property, plus depreciation and amortization, and after adjustments for
unconsolidated partnerships and joint ventures. Adjustments for unconsolidated partnerships and joint ventures will be calculated to reflect funds from operations on the same basis. The April 2002 White Paper states that gain or loss on sales of
property is excluded from FFO for previously depreciated operating properties only. Once the Operating Partnership commences the conversion of units to condominiums, it simultaneously discontinues depreciation of such property. FFO available to
Units is calculated on a basis consistent with net income available to Units and reflects adjustments to net income for preferred distributions and premiums on redemption of preference units/interests in accordance with accounting principles
generally accepted in the United States.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | The Operating Partnership believes that FFO and FFO available to Units are helpful to investors as supplemental measures of the operating performance of a
real estate company, because they are recognized measures of performance by the real estate industry and by excluding gains or losses related to dispositions of depreciable property and excluding real estate depreciation (which can vary among owners
of identical assets in similar condition based on historical cost accounting and useful life estimates), FFO and FFO available to Units can help compare the operating performance of a companys real estate between periods or as compared to
different companies. FFO and FFO available to Units do not represent net income, net income available to Units or net cash flows from operating activities in accordance with GAAP. Therefore, FFO and FFO available to Units should not be exclusively
considered as alternatives to net income, net income available to Units or net cash flows from operating activities as determined by GAAP or as measures of liquidity. The Operating Partnerships calculation of FFO and FFO available to Units may
differ from other real estate companies due to, among other items, variations in cost capitalization policies for capital expenditures and, accordingly, may not be comparable to such other real estate companies.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | Net income, FFO and FFO available to Units have all been reduced by approximately $2.5 million in the first quarter of 2008 for the retrospective application
of FSP APB 14-1 on convertible debt, which the Operating Partnership adopted as required on January 1, 2009.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



40



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Item 3. Quantitative and Qualitative Disclosures About Market Risk

The Operating Partnerships market risk has not changed materially from the amounts and information reported in Item 7A.
Quantitative and Qualitative Disclosures About Market Risk, to the Operating Partnerships Form 10-K for the year ended December 31, 2008. See the Current Environment section of Item 2. Managements Discussion
and Analysis of Financial Condition and Results of Operations relating to market risk and the current economic environment. See also Note 11 in the Notes to Consolidated Financial Statements for additional discussion of derivative instruments.

Item 4. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures:

Effective as of March 31,
2009, the Operating Partnership carried out an evaluation, under the supervision and with the participation of the Operating Partnerships management, including the Chief Executive Officer and Chief Financial Officer of EQR, of the
effectiveness of the Operating Partnerships disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that the disclosure
controls and procedures are effective to ensure that information required to be disclosed by the Operating Partnership in its Exchange Act filings is recorded, processed, summarized and reported within the time periods specified in the SECs
rules and forms.

(b) Changes in Internal Control over Financial Reporting:

There were no changes to the internal control over financial reporting of the Operating Partnership identified in connection with the
Operating Partnerships evaluation referred to above that occurred during the first quarter of 2009 that have materially affected, or are reasonably likely to materially affect, the Operating Partnerships internal control over financial
reporting.



41



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|PART II. | OTHER INFORMATION
|-------- | -----------------

Item 1. Legal Proceedings

The Operating Partnership does not believe that there have been any material developments in the legal proceedings
that were discussed in Part I, Item 3 of the Operating Partnerships Form 10-K for the year ended December 31, 2008.

Item 1A. Risk
Factors

There have been no material changes to the risk factors that were discussed in Part I, Item 1A of the
Operating Partnerships Form 10-K for the year ended December 31, 2008.

Item 2. Unregistered Sales of Equity Securities and Use of
Proceeds

(c) OP Units Repurchased in the Quarter Ended March 31, 2009

The Operating Partnership repurchased the following OP Units during the quarter ended March 31, 2009:



|                   |  |                                          |  |                                      |       |                                                                                        |        |                                                                                  |   |            
|------------------ |  | ---------------------------------------- |  | ------------------------------------ | ----- | -------------------------------------------------------------------------------------- | ------ | -------------------------------------------------------------------------------- | - | -----------
|Period             |  | Total Number    of OP UnitsPurchased (1) |  | AveragePrice    Paid Per    Unit (1) |       | Total Number of  OP Units Purchased  as Part of PubliclyAnnounced Plansor Programs (1) |        | Dollar Value of OP  Units that MayYet Be PurchasedUnder the Plansor Programs (1)
|                   |  |                                          |  |                                     
|January 2009       |  | -                                        |  | $                                    | -     |                                                                                        | -      |                                                                                  | $ | 467,660,443
|February 2009      |  | 47,450                                   |  | $                                    | 23.69 |                                                                                        | 47,450 |                                                                                  | $ | 466,536,298
|March 2009         |  | -                                        |  | $                                    | -     |                                                                                        | -      |                                                                                  | $ | 466,536,298
|                   |  |                                          |  |                                      |       |                                                                                        |        |                                                                                  |   |            
|First Quarter 2009 |  | 47,450                                   |  | $                                    | 23.69 |                                                                                        | 47,450 |                                                                                  |   |            



| | (1) | The OP Units repurchased during the quarter ended March 31, 2009 represent OP Units redeemed in response to repurchases of Common Shares under the
Companys publicly announced share repurchase program approved by its Board of Trustees. All of the shares repurchased during the quarter ended March 31, 2009 were repurchased from employees at an average price of $23.69 per share (the
average of the then current market prices) to cover the minimum statutory tax withholding obligations related to the vesting of employees restricted shares. EQR has authorization to repurchase an additional $466.5 million of its shares as of
March 31, 2009.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Item 4. Submission of Matters to a Vote of Security Holders

Pursuant to a Consent Solicitation Statement dated February 6, 2009 (as filed with the SEC), the Operating Partnership solicited the
consent of its limited partners to certain amendments to the Operating Partnerships limited partnership agreement (the Amendments) primarily relating to the issuance, under EQRs long-term compensation plan, of a class of
partnership interests, known as LTIP Units, to officers of EQR as an alternative to EQRs restricted shares. Limited partners holding 13,264,459 OP Units, or 79.52% of the Operating Partnerships issued and outstanding OP Units as of the
record date for the solicitation, voted on this matter, which received the affirmative consent of limited partners holding in excess of 67% of the outstanding OP Units required to approve the Amendments. The results of the vote are as follows:



|                    |  |            |  |           |  |        
|------------------- |  | ---------- |  | --------- |  | -------
|                    |  | FOR        |  | AGAINST   |  | ABSTAIN
|Total OP Units      |  | 12,192,976 |  | 1,009,240 |  | 62,243 
|% of Voted OP Units |  | 91.92%     |  | 7.61%     |  | 0.47%  
|% of Outstanding    |  | 73.10%     |  | 6.05%     |  | 0.37%  

Item 6. Exhibits See the Exhibit Index



42



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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.



|                  |  |                                                                             
|----------------- |  | ----------------------------------------------------------------------------
|                  |  | ERP OPERATING LIMITED PARTNERSHIP BY: EQUITY RESIDENTIAL ITS GENERAL PARTNER
|                  | 
|Date: May 7, 2009 |  | By:  /s/    Mark J. Parrell                                                 
|                  |  | Mark J. Parrell                                                             
|                  |  | Executive Vice President and                                                
|                  |  | Chief Financial Officer                                                     
|                  | 
|Date: May 7, 2009 |  | By:  /s/    Ian S. Kaufman                                                  
|                  |  | Ian S. Kaufman                                                              
|                  |  | First Vice President and                                                    
|                  |  | Chief Accounting Officer                                                    



43



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EXHIBIT INDEX

The exhibits listed below are filed as part of this report. References to exhibits or other filings under the caption Location indicate that the exhibit or other filing has been filed, that the indexed
exhibit and the exhibit referred to are the same and that the exhibit referred to is incorporated by reference. The Commission file number for our Exchange Act filings referenced below is 0-24920.



|        |  |                                                                                                                                                                                                          |  |                                                                                                                
|------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------
|Exhibit |  | Description                                                                                                                                                                                              |  | Location                                                                                                       
|3.1     |  | Sixth Amended and Restated Agreement of Limited Partnership for ERP Operating Limited Partnership dated as of March 12, 2009.                                                                            |  | Included as Exhibit 10.1 to the Operating Partnerships Form 8-K dated March 12, 2009, filed on March 18, 2009.
|        |  |                                                                                                                                                                                                         
|10.1*   |  | Form of First Amendment to Amended and Restated Change in Control/Severance Agreement with each executive officer.                                                                                       |  | Included as Exhibit 10.1 to Equity Residentials Form 10-Q for the quarterly period ended March 31, 2009.      
|        |  |                                                                                                                                                                                                         
|10.2*   |  | Change in Control Agreement dated as of March 13, 2009 by and between Equity Residential and Mark J. Parrell, Executive Vice President and Chief Financial Officer of
Registrants General Partner.      |  | Included as Exhibit 10.2 to the Operating Partnerships Form 8-K dated March 12, 2009, filed on March 18, 2009.
|        |  |                                                                                                                                                                                                         
|31.1    |  | Certification of David J. Neithercut, Chief Executive Officer of Registrants General Partner.                                                                                                           |  | Attached herein.                                                                                               
|        |  |                                                                                                                                                                                                         
|31.2    |  | Certification of Mark J. Parrell, Chief Financial Officer of Registrants General Partner.                                                                                                               |  | Attached herein.                                                                                               
|        |  |                                                                                                                                                                                                         
|32.1    |  | Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of David J. Neithercut, Chief Executive Officer of
Registrants General Partner. |  | Attached herein.                                                                                               
|        |  |                                                                                                                                                                                                         
|32.2    |  | Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, of Mark J. Parrell, Chief Financial Officer of
Registrants General Partner.     |  | Attached herein.                                                                                               







* Management contracts and compensatory plans or arrangements filed as exhibits to
this report are identified by an asterisk.