UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-QSB

(Mark One)

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

                For the quarterly period ended September 30, 2005

                                       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 0-10272

            Winthrop Residential Associates I, A Limited Partnership
        -----------------------------------------------------------------
        (Exact name of small business issuer as specified in its charter)

               Maryland                                  04-2720493
---------------------------------------     ------------------------------------
   (State or other jurisdiction of          (I.R.S. Employer Identification No.)
      incorporation or organization)

7 Bulfinch Place, Suite 500, Boston, MA                  02114-9507
---------------------------------------     ------------------------------------
(Address of principal executive office)                  (Zip Code)

Issuer's telephone number, including area code         (617) 570-4600

Indicate by check mark whether Issuer (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 Issuer 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 is a shell company (as defined in
Rule 12b-2 of the Exchange Act) Yes |_| No |X|

<PAGE>
              WINTHROP RESIDENTIAL ASSOCIATES I LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

                         PART I - FINANCIAL INFORMATION

Item 1.  Financial Statements.

Balance Sheets

(In Thousands, Except Unit Data)

<TABLE>
<CAPTION>
                                                                    September 30, 2005         December 31,
                                                                        (Unaudited)                2004
                                                                    -------------------     ------------------
<S>                                                                 <C>                     <C>
Assets

Cash and cash equivalents                                           $               288     $              368
                                                                    -------------------     ------------------

         Total Assets                                               $               288     $              368
                                                                    ===================     ==================

Liabilities and Partners' Capital

Liabilities:

Accrued expenses                                                    $                14     $               13
                                                                    -------------------     ------------------

      Total Liabilities                                                              14                     13
                                                                    -------------------     ------------------

Partners' capital:

Limited Partners -
      Units of Limited Partnership Interest, $1,000
      stated value per unit; 25,676 units authorized;
      25,595 units issued and outstanding                                         1,378                  1,455
General Partners' deficit                                                        (1,104)                (1,100)
                                                                    -------------------     ------------------

         Total Partners' Capital                                                    274                    355
                                                                    -------------------     ------------------

         Total Liabilities and Partners' Capital                    $               288     $              368
                                                                    ===================     ==================
</TABLE>

                       See notes to financial statements.


                                    2 of 18
<PAGE>

              WINTHROP RESIDENTIAL ASSOCIATES I LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Statements of Operations (Unaudited)

(In Thousands, Except Unit Data)

<TABLE>
<CAPTION>
                                                                For The Three Months Ended            For The Nine Months Ended
                                                             September 30,     September 30,       September 30,     September 30,
                                                                 2005              2004                2005              2004
                                                            --------------     --------------      -------------     --------------
<S>                                                         <C>                <C>                 <C>               <C>
Income:

Interest                                                    $            1     $           --      $           2     $            2
Other income                                                             4                  3                  4                  3
                                                            --------------     --------------      -------------     --------------

         Total income                                                    5                  3                  6                  5
                                                            --------------     --------------      -------------     --------------

Expenses:

General and adminstrative                                               26                 33                 87                 78
                                                            --------------     --------------      -------------     --------------

         Total expenses                                                 26                 33                 87                 78
                                                            --------------     --------------      -------------     --------------

Net loss                                                    $          (21)    $          (30)     $         (81)    $          (73)
                                                            ==============     ==============      =============     ==============

Net loss allocated to General Partners                      $           (1)    $           (2)     $          (4)    $           (4)
                                                            ==============     ==============      =============     ==============

Net loss allocated to Limited Partners                      $          (20)    $          (28)     $         (77)    $          (69)
                                                            ==============     ==============      =============     ==============

Net loss per Unit of Limited Partnership
   Interest                                                 $        (0.78)    $        (1.10)     $       (3.01)    $        (2.70)
                                                            ==============     ==============      =============     ==============
</TABLE>

                       See notes to financial statements.


                                    3 of 18
<PAGE>

              WINTHROP RESIDENTIAL ASSOCIATES I LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Statement of Partners' Capital (Unaudited)

(In Thousands, Except Unit Data)

<TABLE>
<CAPTION>
                                            Units of
                                             Limited             General              Limited               Total
                                           Partnership          Partners'            Partners'            Partners'
                                            Interest             Deficit              Capital              Capital
                                       ------------------   ------------------   -----------------    ------------------

<S>                                                <C>      <C>                  <C>                  <C>
Balance - January 1, 2005                          25,595   $           (1,100)  $           1,455    $              355

    Net loss                                           --                   (4)                (77)                  (81)
                                       ------------------   ------------------   -----------------    ------------------

Balance - September 30, 2005                       25,595   $           (1,104)  $           1,378    $              274
                                       ==================   ==================   =================    ==================
</TABLE>

                       See notes to financial statements.


                                     4 of 18
<PAGE>

              WINTHROP RESIDENTIAL ASSOCIATES I LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Statements of Cash Flows (Unaudited)

(In Thousands)
<TABLE>
<CAPTION>
                                                                             For The Nine Months Ended
                                                                         September 30,        September 30,
                                                                             2005                 2004
                                                                        ----------------     ---------------
<S>                                                                     <C>                  <C>
Cash Flows From Operating Activities:

Net Loss                                                                $            (81)    $           (73)

Changes in liabilities:
     Increase (decrease) in accrued expenses                                           1                  (2)
                                                                        ----------------     ---------------

     Net cash used in operating activities                                           (80)                (75)
                                                                        ----------------     ---------------

Net decrease in cash and cash equivalents                                            (80)                (75)

Cash and cash equivalents, beginning of period                                       368                 462
                                                                        ----------------     ---------------

Cash and cash equivalents, end of period                                $            288     $           387
                                                                        ================     ===============
</TABLE>

                       See notes to financial statements.


                                    5 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

                         NOTES TO FINANCIAL STATEMENTS

1.    General

      The accompanying financial statements, footnotes and discussions should be
      read in conjunction with the financial statements, related footnotes and
      discussions contained in the Partnership's Annual Report on Form 10-KSB
      for the year ended December 31, 2004.

      The financial information contained herein is unaudited. In the opinion of
      management, all adjustments necessary for a fair presentation of such
      financial information have been included. All adjustments are of a normal
      recurring nature. The balance sheet at December 31, 2004 was derived from
      audited financial statements at such date.

      The results of operations for the nine and three months ended September
      30, 2005 and 2004 are not necessarily indicative of the results to be
      expected for the full year.

2.    Investments in Local Limited Partnerships

      As of September 30, 2005, the Partnership retained an equity interest in
      three limited partnerships (the "Local Limited Partnerships") that
      develop, manage, operate and otherwise deal in government-assisted
      apartment complexes. Each Local Limited Partnership owns one apartment
      complex. One property is located in Michigan and two properties are
      located in North Carolina. The Partnership acquired these Local Limited
      Partnership interests in 1981.

      The Partnership accounts for its investment in each Local Limited
      Partnership using the equity method. Under the equity method of
      accounting, the investment cost is subsequently adjusted by the
      Partnership's share of the Local Limited Partnership's results of
      operations and by distributions received. Equity in the loss of Local
      Limited Partnerships is not recognized to the extent that the investment
      balance would become negative since the Partnership is not obligated to
      advance finds to the Local Limited Partnerships.

      In January 2003, the Financial Accounting Standards Board ("FASB") issued
      Interpretation No. 46, "Consolidation of Variable Interest Entities." This
      interpretation clarifies the application of existing accounting
      pronouncements to certain entities in which equity investors do not have
      the characteristics of a controlling financial interest or do not have
      sufficient equity at risk for the entity to finance its activities without
      additional subordinated financial support from other parties. In December
      2003, the FASB issued a revision to Interpretation No. 46 ("46(R)") to
      clarify some of the provisions of Interpretation No. 46, and to exempt
      certain entities from its requirements. The provisions of the
      interpretation needed to be applied no later than December 31, 2004,
      except for entities that are considered to be special-purpose entities
      which needed to be applied as of December 31, 2003. The Partnership has
      evaluated its investment in each Local Limited Partnership under
      Interpretation No. 46(R) and has determined that they are variable
      interest entities, however, the Partnership is not the primary
      beneficiary. The Partnership has no further risk of loss in these variable
      interest entities as the Partnership has written down its investment to
      zero and as a limited partner is not required to fund deficits.


                                    6 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Item 2. Management's Discussion and Analysis or Plan of Operation

      The matters discussed in this Form 10-QSB contain certain forward-looking
      statements and involve risks and uncertainties (including changing market
      conditions, competitive and regulatory matters, etc.) detailed in the
      disclosure contained in this Form 10-QSB and the other filings with the
      Securities and Exchange Commission made by the Partnership from time to
      time. The discussion of the Partnership's liquidity, capital resources and
      results of operations, including forward-looking statements pertaining to
      such matters, does not take into account the effects of any changes to the
      Partnership's operations. Accordingly, actual results could differ
      materially from those projected in the forward-looking statements as a
      result of a number of factors, including those identified herein.

      This Item should be read in conjunction with the financial statements and
      other items contained elsewhere in the report.

      Liquidity and Capital Resources

      As of September 30, 2005, the Partnership retained an equity interest in
      three Local Limited Partnerships, each of which owns one apartment
      complex. One property is located in Michigan and two properties are
      located in North Carolina.

      The level of liquidity based on cash and cash equivalents experienced an
      $80,000 decrease for the nine months ended September 30, 2005 as compared
      to December 31, 2004, as a result of $80,000 of cash used in operating
      activities. At September 30, 2005, the Partnership had $288,000 in cash
      and cash equivalents, which have been invested primarily in repurchase
      agreements and a money market account.

      The Partnership's primary source of income is distributions from the Local
      Limited Partnerships. The Partnership requires cash to pay general and
      administrative expenses and to make capital contributions to any of the
      Local Limited Partnerships, which the managing general partner deems to be
      in the Partnership's best interest to preserve its ownership interest. To
      date, all cash requirements have been satisfied by interest income, cash
      distributed by the Local Limited Partnerships to the Partnership or by
      loans.

      The Partnership does not intend to make advances to fund future operating
      deficits incurred by any Local Limited Partnership, but retains its
      prerogative to exercise business judgment to reverse this position if
      circumstances change. Moreover, the Partnership is not obligated to
      provide any additional funds to the Local Limited Partnerships to fund
      operating deficits. If a Local Limited Partnership sustains continuing
      operating deficits and has no other sources of funding, it is likely that
      it will eventually default on its mortgage obligations and risk a
      foreclosure on its property by the lender. If a foreclosure were to occur,
      the Local Limited Partnership would lose its investment in the property
      and would incur a tax liability due to the recapture of tax benefits taken
      in prior years. The Partnership, as an owner of the Local Limited
      Partnership, would share these consequences in proportion to its ownership
      interest in the Local Limited Partnership.


                                    7 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Item 2. Management's Discussion and Analysis or Plan of Operation (Continued)

      Liquidity and Capital Resources (continued)

      The Partnership has been advised that the Local Limited Partnership that
      holds Stonegate Apartments, located in Michigan, entered into a purchase
      agreement on May 6, 2005 for a purchase price of approximately $4,420,000.
      However, on June 20, 2005, the purchaser exercised the right to terminate
      the purchase agreement under the provisions of the agreement. The Local
      Limited Partnership is continuing to market the property for sale and has
      received a reduced offer from another third party to purchase the property
      for less than the mortgage balance, which would require lender concessions
      to be consummated. Any other new proposal is expected to be below the
      current outstanding mortgage balance of approximately $4,200,000. There
      can be no assurance that a new purchase agreement will be entered into or
      that the property will ultimately be sold. The property is in need of
      significant rehabilitation and is experiencing operating deficits and high
      vacancy rates. An estimated $800,000 is needed to make repairs to the
      property. It is unlikely that a purchase price in excess of the mortgage
      debt will be obtained. Accordingly, the local general partner has been
      working with the lender to restructure the current financing. If the
      lender is unwilling to accept restructuring, it is likely that the
      property would be foreclosed upon. Accordingly, it is presently expected
      that the Partnership will not receive any distributions from this Local
      Limited Partnership in the foreseeable future.

      The Partnership has entered into an agreement to sell to an affiliate of
      the general partner of the Local Limited Partnership that holds College
      Green Apartments the Partnership's interest in such Local Limited
      Partnership for a purchase price of $1,200,000. The sale is expected to
      close in early 2006. There can be no assurance that the sale will be
      consummated or, if consummated, on the current terms.

      None of the recently issued accounting standards had any effect on the
      Partnership's financial statements.

      Results of Operations

      The Partnership's net loss was $81,000 for the nine months ended September
      30, 2005, as compared to a net loss of $73,000 for the comparable period
      in 2004. The increase was the result of an increase in various general and
      administrative expenses of $9,000 which was partially offset by an
      increase in other income of $1,000.

      Quantitative and Qualitative Disclosures of Market Risk

      The Partnership does not have any financial instruments that would expose
      it to market risk associated with the risk of loss arising from adverse
      changes in market rates and prices.


                                    8 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Item 3.Controls and Procedures

      The Partnership's management, with the participation of the Partnership's
      Chief Executive Officer and Chief Financial Officer, has evaluated the
      effectiveness of the Partnership's disclosure controls and procedures (as
      such term is defined in Rule 13a-15(e) under the Securities Exchange Act
      of 1934, as amended) as of the end of the period covered by this report.
      Based on such evaluation, the Partnership's Chief Executive Officer and
      Chief Financial Officer have concluded that, as of the end of such period,
      the Partnership's disclosure controls and procedures are effective.

      There have not been any changes in the Partnership's internal control over
      financial reporting (as defined in Rule 13a-15(f) under the Securities
      Exchange Act of 1934, as amended) during the fiscal quarter to which this
      report relates that have materially affected, or are reasonably likely to
      materially affect, the Partnership's internal control over financial
      reporting.


                                    9 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Part II - Other Information

Item 5. Other Information

On November 10, 2005, the Partnership entered into an agreement with Fisher
Realty, Inc., an affiliate of the general partner of College Green, the Local
Limited Partnership that holds College Green Apartments, to sell the
Partnership's interest in College Green for a purchase price of $1,200,000. The
sale is expected to close in early 2006. There can be no assurance that the sale
will be consummated or, if consummated, on the current terms

Item 6. Exhibits

            Exhibits:

            Exhibits required by Item 601 of Regulation S-B are filed herewith
            and are listed in the attached Exhibit Index.


                                    10 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

                                   SIGNATURES

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

                                              WINTHROP RESIDENTIAL ASSOCIATES I,
                                              A LIMITED PARTNERSHIP

                                              BY: ONE WINTHROP PROPERTIES, INC.
                                                  Managing General Partner


                                                  BY: /s/ Michael L. Ashner
                                                      --------------------------
                                                      Michael L. Ashner
                                                      Chief Executive Officer


                                                  BY: /s/ Thomas C. Staples
                                                      --------------------------
                                                      Thomas C. Staples
                                                      Chief Financial Officer

                                                      Dated: November 10, 2005


                                    11 of 18
<PAGE>

            WINTHROP RESIDENTIAL ASSOCIATES I, A LIMITED PARTNERSHIP
                         FORM 10-QSB SEPTEMBER 30, 2005

Exhibit Index

      Exhibit                                                           Page No.
      -------                                                           --------

      31.1  Chief Executive Officer's Certification, pursuant to
            Section 302 of the Sarbanes-Oxley Act of 2002.               13 - 14

      31.2  Chief Financial Officer's Certification, pursuant to
            Section 302 of the Sarbanes-Oxley Act of 2002.               15 - 16

      32    Certification of Chief Executive Officer and Chief
            Financial Officer, pursuant to 18 U.S.C. Section 1350,
            as adopted pursuant to Section 906 of the Sarbanes-Oxley
            Act of 2002.                                                    17

      99    Supplementary Information Required Pursuant to Section
            9.4 of the Partnership Agreement.                               18


                                    12 of 18