Exhibit 4.5
JOHN A. SCHISSEL                                     TELEPHONE: (704) 383-1967
DIRECTOR                                             FACSIMILE: (704) 383-6205
REIT BANKING GROUP
FIRST UNION NATIONAL BANK




June 25, 1999


Cornerstone Realty Income Trust, Inc.
CRIT-NC, LLC
Cornerstone REIT Limited Partnership
306 East Main Street
Richmond, Virginia  23219

Re:      $5,500,000  Promissory  Note dated June 29,  1999  between  Cornerstone
         Realty Income Trust, Inc.  ("Cornerstone"),  CRIT-NC,  LLC ("CRIT-NC"),
         and  Cornerstone  REIT Limited  Partnership  ("Cornerstone  REIT L.P.,"
         together with CRIT-NC and Cornerstone, the "Borrowers") and First Union
         National Bank (the "Bank").

The  Borrowers  have  requested  that the Bank extend to the Borrowers a loan to
fund the  refinancing  of a $5,500,000  loan obtained by Cornerstone on June 25,
1996.  The Bank has agreed to do so on the terms and  subject to the  conditions
set forth herein (the "Letter Agreement").

INCORPORATION BY REFERENCE.  All of the terms, conditions and provisions of that
certain Credit  Agreement dated as of October 30, 1997 by and among  Cornerstone
Realty  Income  Trust,  Inc.  each  Additional  Borrowers  that may become party
thereto,  the lenders who are or may become  parties to that  Agreement  and the
Bank as agent for such  lenders,  as said  Agreement  may be amended,  restated,
supplemented  or  otherwise   modified  from  time  to  time  including  without
limitation by those certain Joinder Agreements dated as of December 31, 1997 and
April  22,  1999   (collectively   "Original   Credit   Agreement")  are  hereby
incorporated by reference and govern the credit facility  provided hereby except
as  otherwise  set forth  below.  Capitalized  terms not  defined in this Letter
Agreement  shall have the meanings  attributed  to them in the  Original  Credit
Agreement except as otherwise expressly provided for herein. Notwithstanding the
foregoing,  the following provisions of the Original Credit Agreement are hereby
modified  with  respect to the facility  which is being  provided by this Letter
Agreement (but not with respect to the credit  facility being provided under the
Original Credit Agreement).

MATURITY DATE. For purposes of this Letter Agreement,  the "Maturity Date" means
September 27, 1999 and is not subject to any extension.

The term  "Termination  Date" for  purposes  of this Letter  Agreement  shall be
determined  based  on using  the  Maturity  Date  specified  in the  immediately
preceding paragraph above and not the




"Maturity Date" as defined in the Original Credit Agreement.

COMMITMENT.  The  term  "Aggregate  Commitment"  for  purposes  of  this  Letter
Agreement shall be $5,500,000 and is not subject to any increase.

"Loan" for  purposes of this Letter  Agreement  means that amount  funded by the
Bank up to $5,500,000 made to any Borrower pursuant to this Letter Agreement and
all such Loans, collectively, as the context requires.

DECISION MAKING.  The parties  acknowledge that the Original Credit Agreement is
an agented  multi-lender  facility and that the credit  facility  being provided
under this Letter Agreement is being provided solely by the Bank in its capacity
as lender and that all requirements for voting consents or waivers among lenders
and all  provisions  relating  to the Bank's  role as Agent  under the  Original
Credit  Agreement  will  not  apply to this  Letter  Agreement.  All  decisions,
consents,  waivers or other  actions  required  to be made for  purposes of this
Letter Agreement will be made solely by the Bank.

NOTE. For purposes of the Letter  Agreement,  it is  acknowledged  that there is
only one Note which is the  Promissory  Note being  executed by the Borrowers to
the order of the Bank.

FUNDING CONDITION. It is a condition of this Letter Agreement that the Borrowers
return the  originally  executed  Letter of Credit in the  amount of  $5,500,000
issued by the Bank in connection  with the  acquisition  of Trolley  Square East
apartments prior to funding of this loan.

ACKNOWLEDGEMENT.  By executing this document, the Borrowers hereby reaffirm that
all  representations  and warranties  contained in the Original Credit Agreement
(as defined in the Credit Agreement dated October 15, 1998 between the Borrowers
and the Bank) are true and  correct  as of the date  hereof,  and the  Borrowers
hereby  further  certify and confirm that no Event of Default under the Original
Credit Agreement is currently in existence.


Sincerely,



                         [Signatures on following pages]


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                            ACKNOWLEDGED and AGREED:


                            CORNERSTONE REALTY INCOME TRUST, INC.


                            By: /s/ Glade M. Knight
                                -------------------------------------------
                            Name: Glade M. Knight
                                -------------------------------------------
                            Its: Chief Executive Officer
                                -------------------------------------------


                           CRIT-NC, LLC.

                           By: /s/ Glade M. Knight
                                -------------------------------------------
                           Name: Glade M. Knight
                                -------------------------------------------
                           Its: Chief Executive Officer of
                                Sole Member/Manager
                                -------------------------------------------


                           CORNERSTONE REIT LIMITED PARTNERSHIP

                           By: /s/ Glade M. Knight
                                -------------------------------------------
                           Name: Glade M. Knight
                                -------------------------------------------
                           Its: Chief Executive Officer of General Partner
                                -------------------------------------------


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