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[TITLE]UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC
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  <o:Author>Bonnie Paloney</o:Author>
  <o:LastAuthor>Bonnie Paloney</o:LastAuthor>
  <o:Revision>2</o:Revision>
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  <o:Created>2000-11-14T17:46:00Z</o:Created>
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  <o:Company>Morgan Stanley Dean Witter</o:Company>
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<p class=MsoNormal>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 period ended September 30, 2000 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: 0-18147 DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. (Exact name
of registrant as specified in governing instrument) Delaware 13-3378315 (State
of organization) (IRS Employer Identification No.) 2 World Trade Center, New
York, NY 10048 (Address of principal executive offices) (Zip Code) Registrant's
telephone number, including area code: (212) 392-2974 Former name, former
address
and former fiscal year, if changed since last report: not applicable 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 <PAGE></p>

<table border=0 cellpadding=0 style='mso-cellspacing:1.5pt'>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal align=center style='text-align:center'>September
  30,December 31, 2000 1999 [C][C]ASSETS Cash and cash equivalents $1,538,536 $
  2,225,631 Investment in joint venture - 8,111,989 Other assets 1,564 94,894
  $1,540,100 $10,432,514 LIABILITIES AND PARTNERS' CAPITAL Accounts payable and
  accrued liabilities $ 212,004 $ 109,196 Distributions payable to General
  Partners 133,638 - 345,642 109,196 Partners' capital (deficiency): General
  partners (5,532,825) (5,432,367) Limited partners ($500 per Unit, 304,437
  Units issued) 6,727,283 15,755,685 1,194,458 10,323,318 $1,540,100
  $10,432,514 See accompanying notes to financial statements. </p>
  </td>
 </tr>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal>PART I - FINANCIAL INFORMATION Item 1. Financial
  Statements DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. BALANCE SHEETS </p>
  <p class=MsoNormal><![if !supportEmptyParas]> <![endif]><o:p></o:p></p>
  </td>
 </tr>

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<PAGE>

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 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal align=center style='text-align:center'>Three months
  endedNine months ended September 30, September 30, 2000 1999 2000 1999
 [C][C]
[C][C]Revenues:
  Equity in (loss)earnings of joint venture $(12,807) $ 174,790$5,265,203$
  407,881 Interest and other 19,888 20,754 182,091 53,600 7,081 195,544
  5,447,294 461,481 Expenses: General and administrative51,760 47,305 133,977
  140,916 Net (loss) income $(44,679) $148,239$5,313,317$ 320,565 Net (loss)
  income allocated to: Limited partners $(40,211) $142,916$5,280,137$ 298,009
  General partners (4,468) 5,323 33,180 22,556 $(44,679) $148,239$5,313,317$
  320,565 Net (loss) income per Unit of limited partnership interest$(0.13)
  $0.47 $17.34 $0.98 See accompanying notes to financial statements. </p>
  </td>
 </tr>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. STATEMENTS
  OF OPERATIONS Three and nine months ended September 30, 2000 and 1999 </p>
  <p class=MsoNormal><![if !supportEmptyParas]> <![endif]><o:p></o:p></p>
  </td>
 </tr>


<p class=MsoNormal><span style='display:none;mso-hide:all'><![if <PAGE>

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 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal align=center style='text-align:center'>Limited General
  Partners Partners Total [C][C][C]Partners' capital (deficiency) at
 January 1,
  2000 $15,755,685 $(5,432,367) $10,323,318 Net income 5,280,137 33,180
  5,313,317 Distribution (14,308,539) $ (133,638) (14,442,177) Partners'
  capital (deficiency) at September 30, 2000 $ 6,727,283 $(5,532,825) $
  1,194,458 See accompanying notes to financial statements. </p>
  </td>
 </tr>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. STATEMENT
  OF PARTNERS' CAPITAL Nine months ended September 30, 2000 </p>
  <p class=MsoNormal><![if !supportEmptyParas]> <![endif]><o:p></o:p></p>
  </td>
 </tr>


<p class=MsoNormal> <span style='display:none;mso-hide:all'><![if<PAGE>

<table border=0 cellpadding=0 style='mso-cellspacing:1.5pt'>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal align=center style='text-align:center'>2000
 1999 [C][C]Cash
  flows from operating activities: Net income $5,313,317$ 320,565 Adjustments
  to reconcile net income to net cash provided by (used in) operating
  activities: Equity in earnings of joint venture (5,265,203) (407,881)
  Decrease (increase) in other assets 93,330 (196,556) Increase (decrease) in
  accounts payable and accrued liabilities 102,808 (49,964) Net cash provided
  by (used in) operating activities 244,252 (333,836) Cash flows from investing
  activities: Distributions from joint venture 13,885,591 734,710 Additional
  investments in joint venture (508,399)(108,929) Net cash provided by
  investing activities13,377,192 625,781 Cash flows from financing activities:
  Cash distributions (14,442,177) - Increase in distributions payable to
  General Partners 133,638 - Net cash used in financing activities(14,308,539)
  - (Decrease) increase in cash and cash equivalents(687,095)291,945 Cash and
 cash
  equivalents at beginning of period2,225,6311,531, 647 Cash and cash
  equivalents at end of period $1,538,536$ 1,823,592 See accompanying notes to
  financial statements. </p>
  </td>
 </tr>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal>
DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. STATEMENTS
  OF CASH FLOWS Nine months ended September 30, 2000 and 1999 </p>
  <p class=MsoNormal><![if !supportEmptyParas]>   </td>
 </tr>


<p class=MsoNormal><page>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. Notes
to Financial Statements 1. The Partnership Dean Witter Realty Income
Partnership IV, L.P. (the "Partnership") is a limited partnership
organized under the laws of the State of Delaware in 1986. The Partnership's
last remaining property investment was its 40.6% interest in the partnership
("TPA") which owned Taxter Corporate Park. As discussed in Note 2,
TPA sold the Taxter property on May 23, 2000, and this
 sale has effectuated the
dissolution of the Partnership. Accordingly, the Partnership is in the process
of winding up its affairs, and it plans to distribute the balance of the
Partnership's cash reserves and terminate by December 31, 2000. However, there
can be no assurance that the Partnership can be terminated by such date. The
Partnership's interest in TPA was accounted for using the equity method. The
Partnership's records are maintained on the accrual basis of accounting for
financial and tax reporting purposes. Net income (loss) per Unit amounts are
calculated by dividing net income
 (loss) allocated to Limited Partners,
 in accordance
with the Partnership Agreement, by the weighted average number of Units
outstanding. In the opinion of management, the accompanying financial
statements, which have not been audited, include all adjustments, necessary to
present fairly the results for the interim period. Except for the gain on sale
of the Taxter property included in the equity in earnings of joint venture in
the second quarter of 2000, and the equity in earnings from the Chesterbrook
joint venture recognized in the third quarter of 1999, such
 adjustments consist
only of normal recurring accruals. These
financial statements should be read in
conjunction with the annual financial statements and notes thereto included in
the Partnership's annual report on Form 10-K filed with the Securities and
Exchange Commission for the year ended December 31, 1999. Operating results of
interim periods may not be indicative of the operating results for the entire
year. <PAGE>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. Notes to Financial
Statements 2. Investment in Joint Venture Pursuant to a Purchase and Sale
Agreement dated as of April 4, 2000, as amended, on May 23, 2000, TPA sold the
land and buildings which comprise the Taxter property to a subsidiary of
Mack-Cali Realty Corporation (the "Purchaser"), an unaffiliated
party, for a negotiated sale price of $42.725 million. In connection with the
sale, TPA acquired from an affiliate and conveyed to the Purchaser certain
interests in the Taxter property, including interests that the affiliate had
acquired from KLM Royal Dutch Airlines, for $6.75 million, in February 1999. Of
the $42.725 million, TPA remitted $6.75 million of the sale proceeds to the
affiliate in connection with the transaction. TPA is also owned 44.6% by Dean
Witter Realty Income Partnership III, L.P., an affiliated public partnership,
and 14.8% by Dean Witter Realty Income Partnership II, L.P., an affiliated
public partnership. The purchase price was paid in cash at closing. At closing,
the Partnership received approximately $13.4 million representing its 40.6%
share of the cash received by TPA, net of its share of TPA's closing costs, the
amount of the obligation owed to the affiliate and other deductions. On June
29, 2000, the Partnership distributed, to Limited Partners only, sale proceeds
of approximately $13.0 million ($42.74 per Unit). The Partnership retained a
portion of the sale proceeds to cover any contingencies that may arise pursuant
to the sale and, if required, pay administrative expenses and liabilities that
may arise while the Partnership winds up its affairs. Any sale proceeds
remaining, subsequent to the payment of any contingencies, will be distributed
to Limited Partners only. The Partnership's share of TPA's gain on sale of the
Taxter property was approximately $5.0 million; such gain was allocated 100% to
the Limited Partners. <PAGE></p>

<table border=0 cellpadding=0 style='mso-cellspacing:1.5pt'>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal align=center style='text-align:center'>Summarized
  Statements of Operations of TPA are as follows: Three months ended Nine
  months ended September 30, September 30, 2000 1999 2000 1999 [C][C][C][C]
  income $ 1,640 $1,473,526$ 2,129,283$4,290,842 Gain on sale of real estate -
  - 16,119,499 - 1,640 1,473,526 18,248,782 4,290,842 Expenses 33,185 1,402,881
  1,430,546 3,646,080 Net (loss) income $(31,545)$ 70,645$16,818,236$ 644,762
  On April 1, 2000, TPA reclassified its investment in the Taxter property as
  real estate held for sale. Accordingly, since that date, TPA has not recorded
  depreciation expense on the buildings and related improvements. </p>
  </td>
 </tr>
 <tr>
  <td style='padding:.75pt .75pt .75pt .75pt'>
  <p class=MsoNormal>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. Notes to
  Financial Statements </p>
  <p class=MsoNormal><![if !supportEmptyParas]> <![endif]><o:p></o:p></p>
  </td>
 </tr>

<p class=MsoNormal><page>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P. Notes
to Financial Statements 3. Cash Reserve Distributions On June 29, 2000, the
Partnership also distributed to Limited Partners only, undistributed sale
proceeds of approximately $95,000 ($0.31 per Unit) from the 1998 sale of
Chesterbrook Corporate Center and cash reserves of approximately $3.95 per
Unit. The cash reserves distribution totaled $1,336,379 with $1,202,741
distributed to the Limited Partners and $133,638 payable to the General
Partners. The General Partners deferred receipt of their share of the
distribution to ensure that the Partnership would have cash on hand to cover
all liabilities that may arise while the Partnership winds up its affairs. The
amounts deferred were charged against General Partners' capital and recorded as
distributions payable. On June 29, 2000, the Partnership's distributions of the
Taxter sale proceeds (see Note 2), Chesterbrook sale proceeds and Partnership
cash reserves to Limited Partners totaled $14,308,539 ($47.00 per Unit). 4.
 Related
Party Transactions An affiliate of the Managing General Partner performs
administrative functions, processes investor transactions and prepares tax
information for the Partnership. For the nine-month periods ended September 30,
2000 and 1999, the Partnership incurred approximately $54,000 and $56,000 for
these services, respectively. These amounts are included in general and
administrative expenses. <PAGE>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P.
Item 2. Management's Discussion and Analysis of Financial Condition and Results
of Operations Liquidity and Capital Resources The Partnership's interest in the
Taxter Corporate Park office property (the "Property") was the
Partnership's sole remaining property interest. As discussed in Note 2 to the
financial
statements, the partnership ("TPA") which owned the Property sold the
Property on May 23, 2000. The Property was approximately 90% leased at the time
of the sale. The favorable leasing status and an improved real estate market in
Westchester, New York, the location of the Property, enabled TPA to obtain an
attractive price for the Property. The Partnership Agreement provides that the
Partnership shall terminate upon the sale of the Partnership's last investment,
and that dissolution shall be effective on the day on which the event arises
giving rise to the dissolution. Accordingly, the Partnership dissolved pursuant
to the terms of its Partnership Agreement, effective May 23, 2000, the date on
which the Property was sold. By December 31, 2000, the Partnership plans to
wind up its affairs, distribute its remaining cash reserves and terminate its
existence by filing a certificate of cancellation in the office of the Delaware
Secretary of State. There can be no assurance that the Partnership will
terminate by December 31, 2000. As discussed in Notes 2 and 3 to the financial
statements, on June 29, 2000, the Partnership paid distributions of sale
proceeds and Partnership cash reserves to Limited Partners totaling $47.00 per
Unit. To cover any contingencies that may arise while the Partnership winds up
its affairs, the Partnership retained a portion of the Property sale proceeds,
and the General Partners deferred receipt of their share of the distribution of
Partnership cash reserves. <PAGE>DEAN WITTER REALTY INCOME PARTNERSHIP IV, L.P.
As of the date of closing of the sale of the Property, the Partnership had
commitments to fund approximately $750,000 for its share of tenant improvements
and leasing commissions at the Property. This amount was deducted from the
Partnership's share of the sale proceeds it received at closing. During the
period the Partnership owned its interest in the Property in 2000, the Property
generated positive cash flows from operations. During the nine months ended
September 30, 2000, the Partnership's contributions to TPA (to fund its share
of tenant improvements and leasing commissions at the Property) and cash
reserve distributions exceeded the distributions received from TPA (excluding
the distribution of sale proceeds) and cash provided by Partnership operations.
This cash shortfall was funded with Partnership cash reserves. Except as
discussed above and in the financial statements, the Managing General Partner
is not aware of any trends or events, commitments or uncertainties that may
have a material impact on liquidity. Operations Fluctuations in the
Partnership's operating results for the three and nine-month periods ended
September 30, 2000 compared to 1999 are primarily attributable to the
following: The increase in equity in earnings of joint venture during the nine
months ended September 30, 2000 is primarily due to the Partnership's share of
the gain on sale of the Property (approximately $5.0 million). The decrease in
equity in earnings of joint venture during the three months ended September 30,
2000 is primarily due to: a) the absence of 1999 income of approximately
$146,000 from the Chesterbrook joint venture and b) the loss of operating
income caused by the sale of the Taxter property in May 2000. The increase in
interest and other income during the nine months ended September 30, 2000 is
primarily due to the interest earned <PAGE>on the Taxter sale proceeds until
such proceeds were distributed to Limited Partners. There were no other
individually significant factors which caused changes in revenues or expenses.
Inflation Inflation has been consistently low during the periods presented in
the financial statements and, as a result, has not had a significant effect on
the operations of the Partnership or its property interests. <PAGE>DEAN WITTER
REALTY INCOME PARTNERSHIP IV, L.P. PART II - OTHER INFORMATION Item 6. Exhibits
and Reports on Form 8-K. a) Exhibits. An exhibit index has been filed as part
of this Report on Page E1. b) Reports on Form 8-K. None. <PAGE>DEAN WITTER
REALTY INCOME PARTNERSHIP IV, L.P. 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. DEAN
WITTER REALTY INCOME PARTNERSHIP IV, L.P. By: Dean Witter Realty Fourth Income
Properties Inc. Managing General Partner Date: November 14, 2000 By: /s/ E.
Davisson Hardman, Jr. E. Davisson Hardman, Jr. President Date: November 14,
2000 By: /S/ Raymond E. Koch Raymond E.Koch Principal Accounting Officer <PAGE>
DEAN
WITTER REALTY INCOME PARTNERSHIP IV, L.P. Quarter Ended September 30, 2000
Exhibit Index Exhibit No. Description 27 Financial Data Schedule E1 </p>

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