AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 21, 1998






                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION

                              Washington, DC 20549

                                    FORM 8-K

                                 CURRENT REPORT

                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


       Date of report (Date of earliest event reported): December 7, 1998


                        UNITED DOMINION REALTY TRUST, INC
                        ---------------------------------
             (Exact name of registrant as specified in its charter)




           Virginia                       1-10524                54-0857512     
           --------                       -------                ----------     
(State or other jurisdiction of   (Commission File Number)    (I.R.S. Employer
 incorporation of organization)                              Identification No.)




                   10 South Sixth Street, Virginia 23219-3802
- --------------------------------------------------------------------------------
               (Address of principal executive offices - zip code)




                                 (804) 780-2691
               --------------------------------------------------
               Registrant's telephone number, including area code



Item 2.  Acquisition or Disposition of Assets

         On September  11, 1998,  United  Dominion  Realty Trust,  Inc.  (United
Dominion),  entered  into an  Agreement  and Plan of Merger  (Merger  Agreement)
between  United  Dominion and American  Apartment  Communities  II, Inc.  (AAC).
Pursuant to the Merger  Agreement,  each share of AAC common and preferred stock
was entitled to receive  7.812742 shares of United Dominion Series D Convertible
Preferred  Stock  (Preferred  Stock) and  $46.1824 in cash.  In exchange for the
Preferred Stock and cash,  United Dominion would acquire AAC's 79.1% interest in
AAC II, LP. In addition,  United  Dominion  entered into a Partnership  Interest
Purchase and Exchange Agreement  (Partnership Exchange Agreement) between United
Dominion, United Dominion Realty, L.P. (United Dominion's Operating Partnership)
and American Apartment Communities Operating  Partnership,  L.P., AAC Management
LLC and Schnitzer  Investment  Corporation (the Limited  Partners).  The Limited
Partners  owned a combined  20.9%  interest in AAC II, LP. In  exchange  for the
Limited  Partners  20.9%  interest in AAC II, LP,  United  Dominion  would issue
5,614,035  Operating  Partnership Units (OP Units) and cash. The transaction was
structured  as a  tax-free  merger  (Merger)  and  exchange  of OP Units and was
treated as a purchase  for  accounting  purposes.  On December  7, 1998,  United
Dominion completed the acquisition of AAC in a statutory merger.

         In accordance with the Merger  Agreement,  the purchase price consisted
of the following:  (i) 8,000,000  shares of 7.5% Series D Convertible  Preferred
Stock ($25  liquidation  preference  value)  which is  convertible  into  United
Dominion  common  stock  at  $16.25  per  share  with a  fair  market  value  of
approximately $175 million, (ii) the issuance of 5,614,035 OP Units with a value
of approximately $70 million, (iii) the assumption of secured notes payable with
a fair  value  of  approximately  $460  million,  (iv) the  assumption  of other
liabilities  aggregating  approximately $20 million and (v) $60 million of cash.
The aggregate  purchase price of the Merger was  approximately  $800.0  million,
including transaction costs and mortgage premiums.

         AAC owned 54 communities  located in the West,  Northwest,  Midwest and
Florida.  The 54  communities  contain  14,141  apartment  homes with a weighted
average year built of 1979.  AAC's  apartment  communities  were  geographically
distributed as follows:

                                         Number of                 Number of
City/State                         Apartment Communities        Apartment Homes
- ------------------------           ---------------------        ---------------
San Francisco/San Jose, CA                   4                        980
Monterey Peninsula, CA                      13                      2,076
Sacramento, CA                               2                        914
Los Angeles, CA                              2                        926
Other CA                                     2                        444
                                          ----                     ------
         Total California                   23                      5,340

Portland, OR                                 4                        996
Seattle, WA                                  3                        492
Denver, CO                                   2                        876
                                          ----                     ------
         Pacific Northwest                   9                      2,364

Columbus, OH                                 4                      1,344
Indianapolis, IN                             3                        875
Detroit, MI                                  4                        744
Lansing, MI                                  4                      1,227
Other Midwest                                4                        819
                                          ----                     ------
         Total Midwest                      19                      5,009

Tampa, FL                                    2                      1,108
South Florida                                1                        320
                                          ----                     ------
         Total Florida                       3                      1,428
Total                                       54                     14,141
                                          ====                     ======



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Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits

(a)      Financial Statements of Businesses Acquired

              The financial  statements of American  Apartment  Communities  II,
              Inc. and American  Apartment  Communities  II, LP were  previously
              filed on Form 8-K dated  September  11,  1998 which was filed with
              the  Securities  and Exchange  Commission  on October 23, 1998 and
              subsequently amended on Form 8-K/A filed on December 21, 1998.

(b)      Pro Forma Financial Information

              The  pro  forma   financial   statements  of  American   Apartment
              Communities  II, Inc. and American  Apartment  Communities  II, LP
              were  previously  filed on Form 8-K dated September 11, 1998 which
              was filed with the Securities  and Exchange  Commission on October
              23, 1998 and subsequently  amended on Form 8-K/A filed on December
              21, 1998.






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Signatures

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


                                            UNITED DOMINION REALTY TRUST, INC.


Date: December 21, 1998                     /s/ Robin R. Flanagan              
     -----------------------                -----------------------------------
                                            Robin R. Flanagan, Assistant Vice 
                                                 President and Chief Accounting 
                                                 Officer




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