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                                                                    Exhibit 10.1


                                AMENDMENT NO. 4


                                       to


                                CREDIT AGREEMENT


                                    between


                         CAPTEC NET LEASE REALTY, INC.
                      a Michigan corporation, as borrower


                                      and


                CREDIT SUISSE FIRST BOSTON MORTGAGE CAPITAL LLC
                      a Delaware limited liability company
            (as successor to CS First Boston Mortgage Capital Corp.,
                          its successors and assigns),
                                   as lender



                                October 23, 1997







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                      AMENDMENT NO. 4 TO CREDIT AGREEMENT
                      -----------------------------------


         This Amendment No. 4 ("Amendment") to that certain Credit Agreement
dated February 26, 1996, as previously amended (the "Credit Agreement"), by and
between Captec Net Lease Realty, Inc., a Michigan corporation, as borrower
("Borrower") and Credit Suisse First Boston Mortgage Capital LLC, a Delaware
limited liability company (successor to CS First Boston Mortgage Capital Corp.,
a Delaware corporation), its successors and assigns, as lender ("Lender") is
entered into as of the 23rd day of October, 1997. Capitalized terms used and not
defined herein shall have the meanings attributed to them in the Credit
Agreement.

         This Amendment is being entered into for good and valuable
consideration, the sufficiency and receipt of which are hereby acknowledged, and
subject to the following conditions and limitations, the parties hereto agree to
amend the Credit Agreement as follows:


         1.       SECTION 1(e)(i): Section 1(e)(i) is hereby amended by deleting
                  the amendment to Section 1(e)(i) which was effected in
                  paragraph 4 of Amendment No. 2 dated June 26, 1997 ("Amendment
                  No. 2") and substituting therefor the following:


                  PROVIDED, HOWEVER, upon (1) the completion by Borrower of an
                  S.E.C.-registered public offering of common stock of the
                  Borrower (in accordance with the applicable provisions of the
                  Credit Facility Documents) and (ii) written certification of
                  same by Borrower to Lender, the Revolving Loan Rate shall be
                  reduced to a rate per annum equal to the LIBOR Rate plus
                  1.750% (the "Adjusted Revolving Loan Rate"):

         2.       SECTION 3(e)(ii): Section 3(e)(ii) is hereby amended by
                  deleting the amendment of Section 3(e)(ii) which was effected
                  in paragraph 5 of Amendment No. 2 and substituted therefor the
                  following:

                  The principal amount outstanding of all Revolving Loans and
                  Improvement Loans shall not exceed 71.5% of the Eligible
                  Borrowing Base PROVIDED, HOWEVER, that after the Supplemental
                  Expiration Date (as defined in Amendment No. 3 to the Credit
                  Agreement), the principal



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                  amount outstanding of all Revolving Loans and Improvement
                  Loans related to Loan Asset Categories (i) and (ii), as
                  identified in the definition of Eligible Borrowing Base, shall
                  also not exceed an amount equal to 95.0% of the capitalized
                  cost of all of the Loan Assets in such Loan Asset Categories
                  (the "Loan to Value Requirement").

         3.       SECTION 1(f): Section 1(f) is hereby amended by inserting at
                  the end thereof the following:

   
                  , provided however, after the completion by Borrower of an
                  S.E.C.-registered public offering of common stock of the
                  Borrower (in accordance with the applicable provisions of the
                  Credit Facility Documents) and provided this Agreement is in
                  full force and effect and no default on the part of the
                  Borrower exists hereunder, certain of the proceeds of the
                  Revolving Loans may be advanced to Borrower ("Dividend
                  Advance(s)") for the sole purpose of payment of dividends by
                  Borrower, provided: (i) such outstanding Dividend Advance(s)
                  in the aggregate value shall not exceed fifty percent (50%) of
                  the aggregate value equal to the lesser of (A) eighty-five
                  percent (85%) of the Appraised Value, or (B) ninety-five
                  percent (95%) of the capitalized cost, of Properties which are
                  unencumbered by any superior mortgages or liens at the time of
                  the Dividend Advance(s) and which are provided by Borrower to
                  Lender as additional security and subject to a first lien of
                  Lender under this Agreement for the Dividend Advance(s) (the
                  "Dividend Advance(s) Collateral"); such Dividend Advance(s)
                  outstanding shall not exceed an aggregate amount of Five
                  Million ($5,000,000) Dollars in any fiscal quarter and (iii)
                  the amount of any such Dividend Advance(s) shall be repaid by
                  Borrower to Lender within thirty (30) days of the date of any
                  such Dividend Advance(s), (the "Dividend Advance Repayment
                  Date") at which time such Dividend Advance(s) Collateral shall
                  be released from the lien of Lender. Failure by Borrower to
                  repay to Lender any Dividend Advance(s) on or before the
                  Dividend Advance Repayment Date shall constitute an Event of
                  Default under Section 6 of this Agreement.
    


         4.       REPRESENTATIONS. Borrower represents and warrants that this
                  Amendment has been duly authorized, executed and delivered by
                  Borrower and the Credit Agreement, as amended hereby,
                  constitutes the legal, valid and binding obligation of
                  Borrower enforceable in accordance with its terms;


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         5.       CREDIT AGREEMENT IN FULL FORCE AND EFFECT; NO NOVATION. This
                  Amendment is expressly made supplemental to and a part of the
                  Credit Agreement and the Credit Agreement is in all respects
                  ratified and confirmed, and all of the terms, conditions and
                  provisions thereof, as amended hereby, are and shall continue
                  to remain in full force and effect. The modifications of the
                  terms of the Credit Agreement and the execution and delivery
                  of this Amendment are not intended to constitute, and shall
                  not be deemed to be, a novation.
    

         6.       COUNTERPARTS. This Amendment may be executed in any number of
                  counterparts, each of which, when executed, are and shall
                  continue to be an original, but all of which together shall
                  constitute one and the same instrument.


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         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers thereunto duly authorized as of the date
first above written.

LENDER                                       BORROWER
- ------                                       --------

CREDIT SUISSE FIRST BOSTON                   CAPTEC NET LEASE REALTY, INC.,
MORTGAGE CAPITAL LLC (as                     a Michigan corporation
successor to CS First Boston Mortgage
Capital Corp.), a Delaware limited
liability company


By:                                          By: /s/ Gary A. Bruder
   -----------------------------------           -------------------------------
   Name:                                         Name:  GARY A. BRUDER
   Title:                                        Title: VICE PRESIDENT


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                         AMENDMENT TO CREDIT AGREEMENT
                         -----------------------------

         This Amendment ("Amendment") to that certain Credit Agreement dated
February 26, 1996, as previously amended (the "Credit Agreement"), by and
between Captec Net Lease Realty, Inc., a Michigan corporation, as borrower
("Borrower") and Credit Suisse First Boston Mortgage Capital LLC, a Delaware
limited liability company (successor to CS First Boston Mortgage Capital Corp.,
a Delaware corporation), its successors and assigns, as lender ("Lender") is
entered into as of the 2nd day of October, 1997. Capitalized terms used and not
defined herein shall have the meanings attributed to them in the Credit
Agreement.

         This Amendment is being entered into for good and valuable
consideration, the sufficiency and receipt of which are hereby acknowledged, and
subject to the following conditions and limitations, the parties hereto hereby
agree to amend the Credit Agreement as follows:


         1.       SECTION 1(e) Section 1(e) is hereby amended by inserting at
                  the end thereof the following:

                  (iv)     Borrower agrees to pay to Lender interest on those
                           certain (i) Revolving Loans and (ii) Loan Assets
                           which have been and will be funded pursuant to the
                           Supplementary Loans (defined below) at a rate equal
                           to twenty-five (25%) percent per annum.

         2.       SECTION 2(b) Section 2(b) is hereby further amended by
                  inserting at the end thereof the following:

                  In addition, Borrower shall be required to repay to Lender all
                  principal and interest on those certain Revolving Loans and
                  the Loan Assets which are advanced pursuant to the,
                  Supplementary Loans (hereinafter the "Expiration Date Payment
                  Amount") on the date which is the earlier of (i) six (6)
                  months from the date hereof, or (ii) ten (10) days after the
                  completion by Borrower of an S.E.C.-registered public offering
                  of common stock of the Borrower (in accordance with applicable
                  provisions of the Credit Facility Documents) (the
                  "Supplemental Expiration Date").

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          3.       SECTION 3(e)(ii) Section 3(e)(ii) is hereby amended by
                   inserting at the end thereof the following:

                  (ii) Notwithstanding the provisions of the preceding sentence,
                  prior to the Supplemental Expiration Date, Lender will advance
                  additional sums to Borrower in excess of the Loan to Value
                  Requirement (each a "Supplementary Loan"), in an aggregate
                  amount not to exceed the lesser of: (i) the difference between
                  100% of the Modified Eligible Borrowing Base (defined herein)
                  and the Loan to Value Requirement per the Eligible Borrowing
                  Base or (ii) Eight Million Dollars ($8,000,000).

         4.       SECTION 7. Section 7 is hereby amended to insert at the end
                  thereof the following:

                  (c) Should the Borrower fail to pay the Expiration Date
                  Payment Amount which is due pursuant to Section 1(e)(iv) at
                  the Supplemental Expiration Date, then the Lender shall have
                  the right but not the obligation to purchase ten (10%) percent
                  of the common stock issued by the Borrower prior to any
                  S.E.C.-registered public offering of common stock of the
                  Borrower at the aggregate price of one dollar ($1.00) (the
                  "Strike Price") in addition to such Expiration Date Payment
                  Amount. Lender's rights under this Section 7(c) shall expire,
                  if not exercised, two years after the Supplemental Expiration
                  Date.

          5.      MODIFIED ELIGIBLE BORROWING BASE shall mean an amount
                  (excluding Exempted Loan Investments) equal to the sum of the
                  following loan asset ("Loan Asset") values: (i) the lesser of:
                  (A) eighty-five percent (85%) of the Appraised Value of all of
                  Borrower's Properties not subject to current Improvements or
                  (B) ninety-five percent (95%) of the capitalized cost of all
                  of Borrower's Properties not subject to current Improvements;
                  (ii) seventy-five percent (75%) of the lesser of: (A)
                  eighty-five percent (85%) of the Appraised Value of all of
                  Borrower's Properties subject to Improvement Loans or (B)
                  ninety-five percent (95%) of the budgeted cost of all of
                  Borrower's Properties subject to Improvement Loans which, as a
                  fraction of Revolving Loans shall not exceed twenty (20%)
                  percent thereof in the aggregate; (iii) seventy-one and one
                  half percent (71.5%) of the outstanding principal amount of
                  all Loan Investments held by the Borrower as a fraction of
                  Revolving Loans which shall not exceed 25% in the aggregate,
                  provided however, in no event shall the value of each Loan
                  Asset in (i) through (vi) of this Section 6(a)

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                  includible in the Eligible Borrowing Base exceed the specific
                  limitation for each such Loan Asset Category, as defined
                  below, contained therein; (iv) fifty-three and 625/1000
                  percent (53.625%) of the outstanding principal amount of
                  Secondary Loan Investments held by the Borrower which shall
                  not exceed Five Million ($5,000,000) Dollars in the aggregate;
                  (v) fifty-three and 625/1000 percent (53.625%) of the
                  outstanding principal amount of Subordinated Loan Investments
                  held by the Borrower and which shall not exceed Three Million
                  ($3,000,000) dollars in the aggregate; and (vi) seventy-one
                  and one half percent (71.5%) of the Borrower's net investment
                  (as defined in the Borrower's annual financial statements) in
                  all Financing Leases held by Borrower as a fraction of
                  Revolving Loans which shall not exceed 15% thereof in the
                  aggregate, LESS the lesser of eighty-five percent (85%) of the
                  Appraised Value or ninety-five percent (95%) of the
                  capitalized cost of any Property which is either (A)
                  encumbered by a superior mortgage or deed of trust in favor of
                  a party other than Lender of (B) for which a payment is
                  overdue by a period of sixty (60) days pursuant to a loan held
                  by Borrower of for which a payment is overdue by a period of
                  sixty (60) days pursuant to a Lease between Borrower, as
                  Lessor, and Lessee (each of (i) through (vi) referred to as a
                  "Loan Asset Category" and collectively as "Loan Asset
                  Categories"); PROVIDED, HOWEVER, such Modified Eligible
                  Borrowing Base shall remain in effect subject to receipt by
                  Lender of (i) a Monthly Loan Asset Performance Information
                  Report, as defined below; and (ii) a Notice of Borrowing which
                  shall be accompanied by (A) a Transactional Loan Asset
                  Performance Information Report, as defined below; and (B) a
                  certificate, executed by Borrower, in which Borrower (a)
                  represents and warrants that the creditworthiness of the Loan
                  Asset is consistent with the Borrower's Underwriting
                  Guidelines pursuant to Exhibit Q of the Credit Facility; (b)
                  represents and warrants that no event of default has occurred
                  and is still occurring with respect to any obligor of Borrower
                  with respect to any Loan Asset Category except payment
                  defaults by any obligor of Borrower and which payment defaults
                  are for a period of less than sixty (60) days and (c)
                  certifies the accurateness and completeness in all material
                  respects of the information provided.

         6.       REPRESENTATIONS. Borrower represents and warrants as follows:

                  (i)      this Amendment has been duly authorized, executed and
                           delivered by Borrower and the Credit Agreement, as
                           amended hereby, constitutes the legal, valid and
                           binding


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                           obligation of Borrower enforceable in accordance with
                           its terms;

                  (ii)     the representations and warranties contained in
                           Section 4 of the Credit Agreement are true and
                           correct in all material respects as of the date
                           hereof as if made on the date hereof.

         7.       CREDIT AGREEMENT IN FULL FORCE AND EFFECT: NO NOVATION. This
                  Amendment is expressly made supplemental to and a part of the
                  Credit Agreement and the Credit Agreement is in all respects
                  ratified and confirmed, and all of the terms, conditions and
                  provisions thereof, as amended hereby, are and shall continue
                  to be and remain in full force and effect. The modifications
                  of the terms of the Credit Agreement and the execution and
                  delivery of this Amendment are not intended to constitute, and
                  shall not be deemed to be, a novation.

         8.       COUNTERPARTS. This Amendment may be executed in any number of
                  counterparts, each of which, when executed, are and shall
                  continue to be an original, but all of which together shall
                  constitute one and the same instrument.

         9.       TERMINATION. This Amendment shall terminate on the
                  Supplemental Expiration Date. However, in the event that the
                  Expiration Date Payment amount shall not be received by Lender
                  upon the Supplemental Expiration Date, then Lender, in its
                  sole and absolute discretion, may elect to either (i) continue
                  to receive interest pursuant to Section 1(e)(iv) on all
                  outstanding Supplementary Loans, or (ii) declare an Event of
                  Default under the Credit Facility and the Lender's rights
                  under Section 7(c) of this Agreement shall survive.





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         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers thereunto duly authorized as of the date
first above written.


LENDER                                         BORROWER
- ------                                         --------

CREDIT SUISSE FIRST BOSTON               CAPTEC NET LEASE REALTY, INC.,
MORTGAGE CAPITAL LLC (as                 a Michigan corporation
successor to CS First Boston Mortgage
Capital Corp.), a Delaware limited
liability company.



By:  /s/ Emily Youssouf                  By: /s/ Gary A. Bruder
   -------------------------------          ---------------------------------
     Name:  Emily Youssouf                   Name: Gary A. Bruder
     Title: Director                         Title: Vice President