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                                                                  EXHIBIT 10.12
                          DETACHABLE WARRANT AGREEMENT


     This DETACHABLE WARRANT AGREEMENT (the "Agreement") is made and entered
into as of September 30, 1997 by and between Sun Communities, Inc., a Maryland
corporation ("Sun"), and Bingham Financial Services Corporation, a Michigan
corporation ("the Company").

     WHEREAS, on the date hereof, pursuant to that certain Subordinated Loan
Agreement, of even date hereof, by and among Sun, as lender, and the Company
(the "Loan Agreement"), Sun has agreed to provide the Company with a
subordinated debt facility of up to $10,000,000, which indebtedness shall be
subordinate to all senior debt of the Company.

     WHEREAS, Sun is acquiring from the Company warrants in the form attached
as Exhibit A hereto (the "Detachable Warrants"), representing the right to
purchase from the Company Warrant Shares on the terms and conditions set forth
in the Detachable Warrants.

     WHEREAS, the Detachable Warrants are being issued as an inducement and
partial consideration for Sun to enter into the Subordinated Loan Agreement.

     NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the parties hereto hereby agree
as follows:

      1.   Closing.

            A.   Closing. The closing of the issuance of the
                 Detachable Warrants to Sun (the "Closing") shall take place
                 simultaneously with the closing of the loan transaction
                 contemplated by the Loan Agreement.  The date of such Closing
                 is hereinafter referred to as the "Closing Date."

            B.   Transactions on Closing Date. At the Closing, the
                 Company shall deliver to Sun the duly issued Detachable
                 Warrants.

      2.   Representations and Warranties of The Company. The Company
           represents and warrants to Sun as follows:

            A.   Good Standing. The Company is a corporation duly
                 organized, validly existing and in good standing under the
                 laws of the State of Michigan.

            B.   Authority Relative to this Agreement. The Company
                 has all requisite corporate power and authority to enter into
                 and perform this Agreement and to issue and deliver the
                 Detachable Warrants to Sun.  The execution, delivery and
                 performance by the Company of this Agreement, including the
                 issuance and delivery of the Detachable Warrants to Sun, have
                 been duly authorized by all necessary corporate action on the
                 part of the Company. This Agreement has been duly executed and
                 delivered by the Company and is a legal, valid and binding 
                 obligation of the Company and is enforceable against the 
                 Company in accordance with its terms.

            C.   No Conflict or Violation. The execution and
                 delivery of this Agreement by the Company, the performance by
                 the Company of its terms and the issuance and delivery of the
                 Detachable Warrants to Sun do not, and on the Closing Date
                 will not, conflict with or result in a violation of (i) the
                 Articles of Incorporation or Bylaws of the Company, or (ii)
                 any agreement, instrument, law, rule, regulation, order, writ,
                 judgment or decree to which 
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                 the Company is a party or is subject, except for such
                 conflicts and violations which will not, in the aggregate,
                 have a material adverse effect on the business, operations,
                 assets or condition (financial or otherwise) of the Company
                 and will not deprive Sun of any material benefit under this
                 Agreement.

            D.   Validity of Issuance. The Detachable Warrants to
                 be issued to Sun pursuant to this Agreement and the Warrant
                 Shares (as defined in the Detachable Warrants) issued upon
                 exercise of the Detachable Warrants will, when issued, be duly
                 and validly issued, fully paid and nonassessable (assuming in
                 the case of the Warrant Shares, payment of the exercise price
                 is made in accordance with the terms of the Detachable
                 Warrants).

            E.   Capital Structure. As of the Closing, the
                 authorized capital stock of the Company consists of (i)
                 10,000,000 shares of Common Stock, of which 1,000,000 shares
                 will be issued and outstanding (1,150,000 if the
                 over-allotment option is exercised in full); and (ii)
                 10,000,000 shares of Preferred Stock, of which none will be
                 issued and outstanding.

      3.   Representations and Warranties of Sun. Sun hereby represents
           and warrants to the Company as follows:

            A.   Investment Intent. Sun is acquiring the
                 Detachable Warrants, and if the Detachable Warrants are
                 exercised, the Warrant Shares, for investment solely for its
                 own account and not with a view to, or for resale in
                 connection with, the distribution or other disposition
                 thereof. Sun agrees and acknowledges that it will not,
                 directly or indirectly, offer, transfer or sell the Detachable
                 Warrants or any Warrant Shares, or solicit any offers to
                 purchase or acquire the Detachable Warrants or any Warrant
                 Shares, unless the transfer or sale is (i) pursuant to an
                 effective registration statement under the Securities Act of
                 1933, as amended, and the rules and regulations thereunder
                 (the "Securities Act") and has been registered under any
                 applicable state securities or "blue sky" laws or (ii)
                 pursuant to an exemption from registration under the
                 Securities Act and applicable state securities or "blue sky"
                 laws.

            B.   Legends. Sun acknowledges that the Detachable
                 Warrants and each Warrant Share will contain a legend
                 substantially to the following effect:

                  THE DETACHABLE WARRANTS AND THE WARRANT SHARES HAVE NOT BEEN
                  REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
                  "SECURITIES ACT"), OR THE SECURITIES LAWS OF ANY STATE AND
                  MAY NOT BE PLEDGED, HYPOTHECATED, SOLD, TRANSFERRED OR
                  OTHERWISE DISPOSED OF WITHOUT REGISTRATION UNDER THE
                  SECURITIES ACT OR STATE SECURITIES LAWS OR AN OPINION OF
                  COUNSEL, SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION
                  IS NOT REQUIRED.

     Upon reasonable request of the Company in connection with any transfer of
the Detachable Warrants or the Warrant Shares (other than a transfer pursuant
to a public offering registered under the Securities Act, pursuant to Rule 144
or Rule 144A promulgated under the Securities Act (or any similar rules then in
effect), or to an affiliate of Sun), Sun will deliver, if requested by the
Company, an opinion of counsel knowledgeable in securities laws reasonably


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satisfactory to the Company to the effect that such transfer may be effected
without registration under the Securities Act. The Company agrees to issue
certificates evidencing the Warrant Shares that do not contain such legend upon
receipt of an opinion of counsel, which opinion and counsel shall be reasonably
satisfactory to the Company, to the effect that such legend no longer applies
to the Warrant Shares.

            C.   Additional Investment Representations.  Sun is an
                 "accredited investor" as such term is defined in Rule 501
                 promulgated under the Securities Act.

      4.   Miscellaneous

            A.   Notices.  All notices and other communications
                 provided for herein shall be dated and in writing and shall be
                 deemed to have been duly given (i) when delivered, if
                 delivered personally, sent by registered or certified mail,
                 return receipt requested and postage prepaid, or sent via
                 nationally recognized overnight courier or via facsimile with
                 confirmation of receipt and (ii) when received if delivered
                 otherwise, to the party to whom it is directed:

     Company:

           Bingham Financial Services Corporation
           31700 Middlebelt Road, Suite 125
           Farmington Hills, MI 48334
           Attention: Jeffrey P. Jorissen
           Facsimile No.: (248) 932-4073

           with a copy to:

           Jaffe, Raitt, Heuer & Weiss, P.C.
           One Woodward, Suite 2400
           Detroit, MI 48226
           Attention: Peter Sugar
           Facsimile No.: (313) 961-8358


     Sun:

           Sun Communities, Inc.
           31700 Middlebelt Road, Suite 145
           Farmington Hills, MI  48334
           Attention: Gary A. Shiffman
           Facsimile No.: (248) 932-3072

or to such other address as either party hereto shall have specified by notice
in writing to the others.

            B.   Assignment.  This Agreement and all the
                 provisions hereof shall be binding upon and shall inure to the
                 benefit of the parties hereto and their respective successors
                 and permitted assigns, except that neither this Agreement nor
                 any rights or obligations hereunder shall be assigned by the
                 Company without the prior written consent of Sun.

            C.   Amendment. This Agreement may be amended only by
                 a written instrument signed by the Company and Sun.


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            D.   Waiver.  Any party hereto may (a) extend the time
                 for the performance of any of the obligations or other acts of
                 the other party hereto, (b) waive any inaccuracies in the
                 representations and warranties contained herein or in any
                 document delivered pursuant hereto and (c) waive compliance
                 with any of the agreements or conditions herein. Any agreement
                 on the part of a party hereto to any such extension or waiver
                 shall be valid as to such party if set forth in an instrument
                 in writing signed by such party.

            E.   Severability. In the event that any one or more
                 of the provisions hereof, or the application thereof in any
                 circumstances, is held invalid, illegal or unenforceable in
                 any respect for any reason, the validity, legality and
                 enforceability of any such provision in every other respect
                 and of the remaining provisions hereof shall not be in any way
                 impaired, it being intended that all rights, powers and
                 privileges of the parties hereto shall be enforceable to the
                 fullest extent permitted by law.

            F.   Applicable Law. The corporate law of the State of
                 Michigan shall govern all issues and questions concerning the
                 relative rights of Sun and the Company. In addition, all other
                 issues and questions concerning the construction,
                 validity, interpretation and enforceability of this Agreement
                 and the exhibits and schedules hereto shall be governed by and
                 construed in accordance with the laws of the State of
                 Michigan, without giving effect to any choice of law or
                 conflict of law provisions that would cause the application of
                 the laws of any jurisdiction other than the State of Michigan.

            G.   Expenses.  All reasonable fees and expenses
                 incurred by Sun in connection with the preparation of this
                 Agreement and the transactions referred to herein, including
                 the reasonable fees of Sun's counsel, shall be paid by the
                 Company, whether or not the issuance of the Detachable
                 Warrants, the execution and delivery of the Loan Agreement or
                 any other transaction contemplated hereby is consummated.

            H.   Counterparts.  This Agreement may be executed in
                 two or more counterparts, each of which when so executed and
                 delivered shall be deemed to be an original and all of which
                 together shall be deemed to be one and the same agreement.

            I.   Descriptive Headings. The headings in this
                 Agreement are for convenience of reference only and shall not
                 limit or otherwise affect the meaning of the terms contained
                 herein.


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     IN WITNESS WHEREOF, the parties hereto have caused this Detachable Warrant
Agreement to be signed and attested by its duly authorized officers and to be
dated as of the date hereof.

                                        BINGHAM FINANCIAL SERVICES CORPORATION


                                        By:
                                           ------------------------------------
                                            Jeffrey P. Jorissen

                                        Its: President


                                        SUN COMMUNITIES, INC.


                                        By:
                                           ------------------------------------
                                            Gary A. Shiffman
 
                                        Its: President





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