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                                                                    EXHIBIT 5.1



July 3, 1997




Board of Directors
Cardinal Realty Services, Inc.
6954 Americana Parkway
Reynoldsburg, Ohio  43068

Gentlemen:

         Cardinal Realty  Services,  Inc., an Ohio  corporation (the "Company"),
intends to file with the Securities and Exchange Commission under the Securities
Act of 1933, as amended, a Registration Statement on Form S-8 (the "Registration
Statement")  with  respect to 435,123  shares (the  "Shares")  of the  Company's
common stock,  without par value (the "Common Stock"), to be issued from time to
time pursuant to the Amended and Restated 1992 Incentive Equity Plan of Cardinal
Realty Services,  Inc. (the "Incentive Equity Plan"), the Non-Employee  Director
Restricted  Stock  Plan  ("Director  Plan"),  Employment  Agreements  and  Award
Agreements between the Company and each of Messrs. Bartling, Thompson, Selid and
Alexander  and  Leslie  Fox  identified  in  the  Registration   Statement  (the
"Employment Agreements"), the Supplemental Letter to the Employment Agreement of
Patrick  M.  Holder,  between  the  Company  and Mr.  Holder  identified  in the
Registration  Statement (the "Letter  Agreement"),  the  Restricted  Stock Award
Agreements  between  the  Company  and  Joseph  E.  Madigan  identified  in  the
Registration  Statement  and the Award  Agreements  between  the Company and Mr.
Koegler and Ms. Souder  identified  in the  Registration  Statement  (the "Award
Agreements").  Capitalized  terms not defined in this  letter have the  meanings
given to them in the Registration Statement.

     You have requested our opinion in connection  with the Company's  filing of
the Registration Statement. In this connection, we have examined and relied upon
originals or copies,  certified or otherwise  identified to our  satisfaction as
being true  copies,  of all such records of the  Company,  all such  agreements,
certificates  of officers of the Company and others,  and such other  documents,
certificates  and  corporate or other  records as we have deemed  necessary as a
basis for the opinions expressed in this letter, including,  without limitation,
the  Company's   Restated  Articles  of  Incorporation,   and  the  Registration
Statement.

         In our examination,  we have assumed the genuineness of all signatures,
the legal capacity of all natural  persons,  the  authenticity  of all documents
submitted to us as originals and the conformity to authentic  original documents
of all documents submitted to us as certified or photostatic copies.




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         We have investigated such questions of law for the purpose of rendering
the opinions in this letter as we have deemed  necessary.  We express no opinion
in this letter concerning any law other than the General  Corporation Law of the
State of Ohio.

         We have  assumed  the Company  will remain in good  standing as an Ohio
corporation  at all times when  shares of Common  Stock are issued  pursuant  to
terms  of  the  Incentive   Equity  Plan,  the  Director  Plan,  the  Employment
Agreements, the Letter Agreement and the Award Agreements.

         On the basis of and in reliance on the foregoing, we are of the opinion
that:

         (1)      The Shares of the Common  Stock to be issued  pursuant  to the
                  Incentive  Equity Plan,  the  Director  Plan,  the  Employment
                  Agreements,  the Letter  Agreement  and the Award  Agreements,
                  respectively,  when and if issued in accordance with the terms
                  of  the  Incentive   Equity  Plan,   the  Director  Plan,  the
                  Employment  Agreements,  the  Letter  Agreement  and the Award
                  Agreements,  respectively  will be legally issued,  fully paid
                  and nonassessable.

         (2)      The  Shares  of the  Common  Stock  received  pursuant  to the
                  Incentive  Equity Plan,  the  Director  Plan,  the  Employment
                  Agreements,  the Letter  Agreement  and the Award  Agreements,
                  respectively  have been legally  issued and are fully paid and
                  nonassessable.

         The  opinion  in  this  letter  is  rendered  only  to the  Company  in
connection  with the  filing of the  Registration  Statement.  We consent to the
filing of this letter as an exhibit to the Registration  Statement.  The opinion
may not be relied upon by the Company for any other purpose. This letter may not
be paraphrased,  quoted or summarized, nor may it be duplicated or reproduced in
part.

                                                    Very truly yours,

                                                /s/ BENESCH, FRIEDLANDER,
                                                    COPLAN & ARONOFF LLP
                                                -----------------------------
                                                    BENESCH, FRIEDLANDER,
                                                    COPLAN & ARONOFF LLP