GMAC COMMERCIAL MORTGAGE SECURITIES INC
8-K, 1999-10-27
ASSET-BACKED SECURITIES
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K
CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report: October 15, 1999
(Date of earliest event reported)

GMAC Commercial Mortgage Securities, Inc.
(Sponsor)
(Issuer in Respect of Commercial Mortgage Pass-Through
Certificates Series 1998-C1)
Exact name of registrant as specified in charter)

Delaware                  333-37717        23-2811925
(State or other juris-    (Commission   (I.R.S. Employer
diction of organization)  File No.)     Identification No.)

650 Dresher Road, Horsham, Pennsylvania    19044
(Address of principal executive offices) (Zip Code)

Registrant's Telephone Number, including area code
(215) 328-3480

(Former name or former address, if changed since
last report.)

ITEM 5.        OTHER EVENTS

On or about May 18, 1998, the Registrant will
cause the issuance and sale of approzimately
$1,438,000,263 initial principal amount of
Mortgage Pass-Through Certificates, Series 1998-C1,
Class X, Class A-1, Class A-2, Class B, Class C,
Class D, Class E, Class F, Class G, Class H,
Class J, Class K, Class L, Class M, Class N,
Class R-1, Class R-2 and Class R-3 (the "certificates")
pursuant to a Pooling and Servicing Agreement to
be dated as of May 1, 1998, among the Registrant,
GMAC Commercial Mortgage Corporation, as Servicer,
LaSalle Bank N.A., as Trustee and ABN AMRO
Bank N.V., as Fiscal Agent.  In connection with
the sale of the Class X, Class A-1, Class A-2,
Class B, Class C, Class D, Class E and Class F
Certificates (the "Publicly Offered Certificates"),
the Registrant has been advised by Deutsche Morgan
Grenfell Inc. and Lehman Brothers Inc. have
registered pursuant to the Act under a Registration
Statement on Form S-3 (File No.333-37717)
(the "Registration Statement").


Capitalized terms used herein and not defined herein
have the same meanings ascribed to such terms in the
Pooling and Servicing Agreement.

Pursuant to Section 3.20 of the Pooling and Servicing
Agreement, the Trustee is filing this Current Report
containing the October 15,1999 monthly distribution
report.


This Current Report is being filed by the Trustee, in
its capacity as such under the Pooling and Servicing Agreement, on
behalf of the Registrant.  The information reported and contained
herein has been supplied to the Trustee by one or more of the Master
Servicer, the Special Servicer or other third parties without
independent review or investigation by the Trustee. Pursuant to the
Pooling and Servicing Agreement, the Trustee is not responsible for
the accuracy or completeness of such information.


ITEM 7.  FINANCIAL STATEMENTS, PRO FORMA FINANCIAL
   INFORMATION AND

Exhibits

Exhibit No.	Description

99.1  	Monthly distribution report pursuant to Section 4.02
of the Pooling and Servicing Agreement for the
distribution on October 15,1999.

99.2	      * Certain information received from the borrowers
pursuant to the loan documents.


Pursuant to the requirements of the Securities Exchange Act of
1934, the Registrant has duly caused this report to be signed
on behalf of the Registrant by the undersigned thereunto duly
authorized.

LASALLE BANK N.A., IN ITS CAPACITY AS TRUSTEE
UNDER THE POOLING AND SERVICING AGREEMENT ON
BEHALF OF GS MORTGAGE SECURITIES CORPORATION II,
REGISTRANT

	By: /s/ Russell Goldenberg
		Russell Goldenberg,
		Senior Vice President


Date: October 15, 1999












ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Date       10/15/99
Payment Date:        10/15/99
Prior Payment:       09/15/99
Record Date:         09/30/99

WAC:                  7.2034%
WAMM:                     167

                             Number Of Pages

Table Of Contents                        1
REMIC Certificate Report                 4
Other Related Information                4
Asset Backed Facts Sheets                1
Delinquency Loan Detail                  2
Mortgage Loan Characteristics            2
Loan Level Listing                       7

Total Pages Included  In This Package                  21


Specially Serviced Loan Detail            Appendix A
Modified Loan Detail                      Appendix B
Realized Loss Detail                      Appendix C

Information is available for this issue from the following sources
LaSalle Web Site                          www.lnbabs.com
LaSalle Bulletin Board                    (714) 282-3990
LaSalle ASAP Fax System                   (714) 282-5518
Bloomberg                                 User Terminal

ASAP #:                                               325
Monthly Data File Name:                   0325MMYY.EXE


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Remic III

Statement Date       10/15/99
Payment Date:        10/15/99
Prior Payment:       09/15/99
Record Date:         09/30/99

WAC:                  7.2034%
WAMM:                     167
              Original                    Opening
Class         Face Value (1)              Balance
CUSIP         Per $1,000                  Per $1,000

X             1,438,000,263.0N            1,403,629,864.41
361849DD1       1000.00000000                976.09847545
A-1            333,587,000.00              299,216,601.41
361849DE9       1000.00000000                896.96721218
A-2            687,393,000.00              687,393,000.00
361849DF6       1000.00000000               1000.00000000
B               28,760,000.00               28,760,000.00
361849DG4       1000.00000000               1000.00000000
C               64,710,000.00               64,710,000.00
361849DH2       1000.00000000               1000.00000000
D               75,495,000.00               75,495,000.00
361849DJ8       1000.00000000               1000.00000000
E               68,305,000.00               68,305,000.00
361849DK5       1000.00000000               1000.00000000
F               43,140,000.00               43,140,000.00
361849DL3       1000.00000000               1000.00000000
G               32,355,000.00               32,355,000.00
361849DM1       1000.00000000               1000.00000000
H               25,165,000.00               25,165,000.00
361849DN9       1000.00000000               1000.00000000
J               14,380,000.00               14,380,000.00
361849DP4       1000.00000000               1000.00000000
K               25,165,000.00               25,165,000.00
361849DQ2       1000.00000000               1000.00000000
L               14,380,000.00               14,380,000.00
361849DR0       1000.00000000               1000.00000000
M               10,785,000.00               10,785,000.00
361849DS8       1000.00000000               1000.00000000
N               14,380,263.00               14,380,263.00
361849DT6       1000.00000000               1000.00000000

              Principal      Principal                   Negative
Class         Payment        Adj. or Loss                Amortization
CUSIP         Per $1,000     Per $1,000                  Per $1,000

X                        0.00         0.00           0.00           0.00
361849DD1          0.00000000   0.00000000     0.00000000     0.00000000
A-1              2,011,629.54         0.00           0.00           0.00
361849DE9          6.03029956   0.00000000     0.00000000     0.00000000
A-2                      0.00         0.00           0.00           0.00
361849DF6          0.00000000   0.00000000     0.00000000     0.00000000
B                        0.00         0.00           0.00           0.00
361849DG4          0.00000000   0.00000000     0.00000000     0.00000000
C                        0.00         0.00           0.00           0.00
361849DH2          0.00000000   0.00000000     0.00000000     0.00000000
D                        0.00         0.00           0.00           0.00
361849DJ8          0.00000000   0.00000000     0.00000000     0.00000000
E                        0.00         0.00           0.00           0.00
361849DK5          0.00000000   0.00000000     0.00000000     0.00000000
F                        0.00         0.00           0.00           0.00
361849DL3          0.00000000   0.00000000     0.00000000     0.00000000
G                        0.00         0.00           0.00           0.00
361849DM1          0.00000000   0.00000000     0.00000000     0.00000000
H                        0.00         0.00           0.00           0.00
361849DN9          0.00000000   0.00000000     0.00000000     0.00000000
J                        0.00         0.00           0.00           0.00
361849DP4          0.00000000   0.00000000     0.00000000     0.00000000
K                        0.00         0.00           0.00           0.00
361849DQ2          0.00000000   0.00000000     0.00000000     0.00000000
L                        0.00         0.00           0.00           0.00
361849DR0          0.00000000   0.00000000     0.00000000     0.00000000
M                        0.00         0.00           0.00           0.00
361849DS8          0.00000000   0.00000000     0.00000000     0.00000000
N                        0.00         0.00           0.00           0.00
361849DT6          0.00000000   0.00000000     0.00000000     0.00000000

                             Interest     Interest       Pass-Through
Class                        Payment      Adjustment     Rate (2)
CUSIP         Per $1,000     Per $1,000   Per $1,000     Next Rate (3)

X             1,401,618,234.8   442,160.70           0.00        0.3780%
361849DD1        974.69956782   0.30748305     0.00000000        0.3780%
A-1            297,204,971.87 1,598,564.72           0.00        6.4110%
361849DE9        890.93691262   4.79204741     0.00000000        6.4110%
A-2            687,393,000.00 3,837,944.25           0.00        6.7000%
361849DF6       1000.00000000   5.58333333     0.00000000        6.7000%
B               28,760,000.00   161,846.90           0.00        6.7530%
361849DG4       1000.00000000   5.62750000     0.00000000        6.7530%
C               64,710,000.00   367,013.55           0.00        6.8060%
361849DH2       1000.00000000   5.67166667     0.00000000        6.8060%
D               75,495,000.00   438,751.78           0.00        6.9740%
361849DJ8       1000.00000000   5.81166673     0.00000000        6.9740%
E               68,305,000.00   403,441.71           0.00        7.0878%
361849DK5       1000.00000000   5.90647405     0.00000000        7.0878%
F               43,140,000.00   254,805.29           0.00        7.0878%
361849DL3       1000.00000000   5.90647404     0.00000000        7.0878%
G               32,355,000.00   191,103.97           0.00        7.0878%
361849DM1       1000.00000000   5.90647412     0.00000000        7.0878%
H               25,165,000.00   148,636.42           0.00        7.0878%
361849DN9       1000.00000000   5.90647407     0.00000000        7.0878%
J               14,380,000.00    84,935.10           0.00        7.0878%
361849DP4       1000.00000000   5.90647427     0.00000000        7.0878%
K               25,165,000.00   140,504.58           0.00        6.7000%
361849DQ2       1000.00000000   5.58333320     0.00000000        6.7000%
L               14,380,000.00    80,288.33           0.00        6.7000%
361849DR0       1000.00000000   5.58333310     0.00000000        6.7000%
M               10,785,000.00    60,216.25           0.00        6.7000%
361849DS8       1000.00000000   5.58333333     0.00000000        6.7000%
N               14,380,263.00    80,046.46        -243.34        6.7000%
361849DT6       1000.00000000   5.56641141    -0.01692180        6.7000%

Notes:  (1) N denotes notional balance not included in total
   (2) Interest Paid minus
 Interest Adjustment minus Deferred Interest equals Accrual
(3) Estimated


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Remic III

Statement Date       10/15/99
Payment Date:        10/15/99
Prior Payment:       09/15/99
Record Date:         09/30/99

WAC:                  7.2034%
WAMM:                     167

              Original                    Opening
Class         Face Value (1)              Balance
CUSIP         Per $1,000                  Per $1,000

RIII                     0.00                        0.00
361849DW9          0.00000000                  0.00000000

              1,438,000,263.00            1,403,629,864.41

              Principal      Principal    Negative
Class         Payment        Adj. or Loss Amortization
CUSIP         Per $1,000     Per $1,000   Per $1,000

RIII                     0.00         0.00           0.00
361849DW9          0.00000000   0.00000000     0.00000000

                2,011,629.54         0.00           0.00

              Closing        Interest     Interest       Pass-Through
Class         Balance        Payment      Adjustment     Rate (2)
CUSIP         Per $1,000     Per $1,000   Per $1,000     Next Rate (3)

RIII                     0.00         0.00           0.00
361849DW9          0.00000000   0.00000000     0.00000000

              1,401,618,234.88,290,260.01        (243.34)
              Total P&I Payme10,301,889.55              0


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Remic II

Statement Date       10/15/99
Payment Date:        10/15/99
Prior Payment:       09/15/99
Record Date:         09/30/99

WAC:                  7.2034%
WAMM:                     167

              Original                    Opening
Class         Face Value (1)              Balance
CUSIP         Per $1,000                  Per $1,000

LA-1           333,587,000.00              299,216,601.41
None            1000.00000000                896.96721218
LA-2           687,393,000.00              687,393,000.00
None            1000.00000000               1000.00000000
LB              28,760,000.00               28,760,000.00
None            1000.00000000               1000.00000000
LC              64,710,000.00               64,710,000.00
None            1000.00000000               1000.00000000
LD              75,495,000.00               75,495,000.00
None            1000.00000000               1000.00000000
LE              68,305,000.00               68,305,000.00
None            1000.00000000               1000.00000000
LF              43,140,000.00               43,140,000.00
None            1000.00000000               1000.00000000
LG              32,355,000.00               32,355,000.00
None            1000.00000000               1000.00000000
LH              25,165,000.00               25,165,000.00
None            1000.00000000               1000.00000000
LJ              14,380,000.00               14,380,000.00
None            1000.00000000               1000.00000000
LK              25,165,000.00               25,165,000.00
None            1000.00000000               1000.00000000
LL              14,380,000.00               14,380,000.00
None            1000.00000000               1000.00000000
LM              10,785,000.00               10,785,000.00
None            1000.00000000               1000.00000000
LN              14,380,263.00               14,380,263.00
None            1000.00000000               1000.00000000
RII                      0.00                        0.00
None               0.00000000                  0.00000000
              1,438,000,263.00            1,403,629,864.41

              Principal      Principal    Negative
Class         Payment        Adj. or Loss Amortization
CUSIP         Per $1,000     Per $1,000   Per $1,000

LA-1             2,011,629.54         0.00           0.00
None               6.03029956   0.00000000     0.00000000
LA-2                     0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LB                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LC                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LD                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LE                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LF                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LG                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LH                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LJ                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LK                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LL                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LM                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
LN                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
RII                      0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
                 2,011,629.54         0.00           0.00

              Closing        Interest     Interest       Pass-Through
Class         Balance        Payment      Adjustment     Rate (2)
CUSIP         Per $1,000     Per $1,000   Per $1,000     Next Rate (3)
             0
LA-1           297,204,971.87 1,767,315.10           0.00        7.0878%
None             890.93691262   5.29791359     0.00000000        7.1552%
LA-2           687,393,000.00 4,060,068.89           0.00        7.0878%
None            1000.00000000   5.90647401     0.00000000        7.1552%
LB              28,760,000.00   169,870.19           0.00        7.0878%
None            1000.00000000   5.90647392     0.00000000        7.1552%
LC              64,710,000.00   382,207.93           0.00        7.0878%
None            1000.00000000   5.90647396     0.00000000        7.1552%
LD              75,495,000.00   445,909.26           0.00        7.0878%
None            1000.00000000   5.90647407     0.00000000        7.1552%
LE              68,305,000.00   403,441.71           0.00        7.0878%
None            1000.00000000   5.90647405     0.00000000        7.1552%
LF              43,140,000.00   254,805.29           0.00        7.0878%
None            1000.00000000   5.90647404     0.00000000        7.1552%
LG              32,355,000.00   191,103.97           0.00        7.0878%
None            1000.00000000   5.90647412     0.00000000        7.1552%
LH              25,165,000.00   148,636.42           0.00        7.0878%
None            1000.00000000   5.90647407     0.00000000        7.1552%
LJ              14,380,000.00    84,935.10           0.00        7.0878%
None            1000.00000000   5.90647427     0.00000000        7.1552%
LK              25,165,000.00   148,636.42           0.00        7.0878%
None            1000.00000000   5.90647407     0.00000000        7.1552%
LL              14,380,000.00    84,935.10           0.00        7.0878%
None            1000.00000000   5.90647427     0.00000000        7.1552%
LM              10,785,000.00    63,701.32           0.00        7.0878%
None            1000.00000000   5.90647381     0.00000000        7.1552%
LN              14,380,263.00    84,693.31        -243.34        7.0878%
None            1000.00000000   5.88955223    -0.01692180        7.1552%
RII                      0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000
              1,401,618,234.8 8,290,260.01        -243.34
              Total P&I Payme10,301,889.55


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Remic I

Statement Date       10/15/99
Payment Date:        10/15/99
Prior Payment:       09/15/99
Record Date:         09/30/99

WAC:                  7.2034%
WAMM:                     167

              Original                    Opening
Class         Face Value (1)              Balance
CUSIP         Per $1,000                  Per $1,000

Regular Intere1,438,013,391.24            1,403,642,992.65
None            1000.00000000                976.09869366
RI                       0.00                        0.00
None               0.00000000                  0.00000000

              1,438,013,391.24            1,403,642,992.65

              Principal      Principal    Negative
Class         Payment        Adj. or Loss Amortization
CUSIP         Per $1,000     Per $1,000   Per $1,000

Regular Intere   2,011,629.54         0.00           0.00
None               1.39889486   0.00000000     0.00000000
RI                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000

                 2,011,629.54         0.00           0.00

              Closing        Interest     Interest       Pass-Through
Class         Balance        Payment      Adjustment     Rate (2)
CUSIP         Per $1,000     Per $1,000   Per $1,000     Next Rate (3)

Regular Intere1,401,631,363.1 8,290,260.01           0.00        7.0878%
None             974.69979880   5.76507845     0.00000000        7.1552%
RI                       0.00         0.00           0.00
None               0.00000000   0.00000000     0.00000000

              1,401,631,363.1 8,290,260.01
              Total P&I Payme10,301,889.55
ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Other Related Information

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

            Accrued   Allocation of
            CertificatPrepay Interest
Class       Interest  Shortfall

X           442,160.70         0.00
A-1         1,598,564.         0.00
A-2         3,837,944.         0.00
B           161,846.90         0.00
C           367,013.55         0.00
D           438,751.78         0.00
E           403,441.71         0.00
F           254,805.29         0.00
G           191,103.97         0.00
H           148,636.42         0.00
J            84,935.10         0.00
K           140,504.58         0.00
L            80,288.33         0.00
M            60,216.25         0.00
N            80,289.80         0.00


            8,290,503.         0.00

            Beginning Payment of
            Unpaid    Prior Unpaid
Class       Interest  Interest

X                 0.00         0.00
A-1               0.00         0.00
A-2               0.00         0.00
B                 0.00         0.00
C                 0.00         0.00
D                 0.00         0.00
E                 0.00         0.00
F                 0.00         0.00
G                 0.00         0.00
H                 0.00         0.00
J                 0.00         0.00
K                 0.00         0.00
L                 0.00         0.00
M                 0.00         0.00
N               749.26         0.00


                749.26         0.00

            Ending    Yield
            Unpaid    Maintenance  Prepayment
Class       Interest  Premium      Premiums

X                 0.00         0.00          0.00
A-1               0.00         0.00          0.00
A-2               0.00         0.00          0.00
B                 0.00         0.00          0.00
C                 0.00         0.00          0.00
D                 0.00         0.00          0.00
E                 0.00         0.00          0.00
F                 0.00         0.00          0.00
G                 0.00         0.00          0.00
H                 0.00         0.00          0.00
J                 0.00         0.00          0.00
K                 0.00         0.00          0.00
L                 0.00         0.00          0.00
M                 0.00         0.00          0.00
N               992.60         0.00          0.00


                992.60         0.00          0.00

            Advances
                               Prio                  Current Period
            Principal Interest     Principal     Interest

  Servicer  877,382.45 3,564,905.67    637,395.73    2,695,187.50
  Trustee:        0.00         0.00          0.00            0.00
 Fiscal Agen      0.00         0.00          0.00            0.00

                                       637,395.73    2,695,187.50

                                                         Outstanding
            Principal Interest     Principal     Interest

  Servicer  877,382.45 3,564,905.68    637,395.73    2,695,187.49
  Trustee:        0.00         0.00          0.00            0.00
 Fiscal Agen      0.00         0.00          0.00            0.00

            877,382.45 3,564,905.68    637,395.73    2,695,187.49


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Other Related Information

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Current Period Master Servicing Fees Paid:             132,064.40
Additional Master Servicing Compensation:                    0.00
Current Period Special Servicing Fees Paid:                  0.00
Current Period Workout Fees Paid                             0.00
Current Period Liquidation Fees Paid:                        0.00

                                                       132,064.40




Outstanding Mortgage Loans in Pool

Number of Outstanding Mortgage Loans in Pool:                 179
Aggregate Stated Principal Balance before Distrib1,403,642,992.65
Aggregate Stated Principal Balance after Distribu1,401,631,363.11
Percentage of Remaining Cut-off Date Principal Ba        97.4709%

Summary of REO Properties

                                   Principal
#           Property NDate of REO  Balance

1.                   0     01/00/00          0.00
2.               0.00      01/00/00          0.00
3.                         01/00/00          0.00
4.               0.00      01/00/00          0.00
5.                   0     01/00/00          0.00

                      Date of FinalAmount        Aggregate Other
            Book ValueRecovery     of Proceeds   Rev. Collected

1.                0.00     01/00/00          0.00            0.00
2.                0.00     01/00/00          0.00            0.00
3.                0.00     01/00/00          0.00            0.00
4.                0.00     01/00/00          0.00            0.00
5.                0.00     01/00/00          0.00            0.00


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Other Related Information

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Summary of Appraisal Reductions
                                   Principal
#           Property NLoan Number  Balance

1.                   0            0          0.00
2.               0.00         0.00           0.00
3.          No Appraisal Reductions as of The Most Recent Due Period
4.               0.00         0.00           0.00
5.                   0            0          0.00

            Appraisal Appraisal    Date of
            Reduction Date         Reduction

1.                0.00     01/00/00      01/00/00
2.                0.00     01/00/00      01/00/00
3.
4.                0.00     01/00/00      01/00/00
5.                0.00     01/00/00      01/00/00





Summary of Repurchased, Liquidated or Disposed Loans
                                   Principal
#           Property NLoan Number  Balance

1.                   0           0           0.00
2.                   0            0          0.00
3.          No Repurchases / Liquidations as of The Most Recent Due Period
4.                   0            0          0.00
5.                  0         0.00           0.00

                      Date of FinalAmount        Aggregate Other
            Book ValueLiquidation  of Proceeds   Rev. Collected

1.                0.00     01/00/00          0.00            0.00
2.                0.00     01/00/00          0.00            0.00
3.                         01/00/00          0.00            0.00
4.                0.00     01/00/00          0.00            0.00
5.                0.00     01/00/00          0.00            0.00


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Other Related Information

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

            Maturity Date Extensions (Since Deal Origination)
Maturity Date         Number of    Cut-off PrinciWeighted Average
Status                Loans        Balance       Extension
Extended                          0          0.00               0
In Process *                      0          0.00               0
Paid Off **                       0          0.00               0
Paid Off - Extended **            0          0.00               0
In Process - Extended             0          0.00               0
Total                             0          0.00               0
* In the process of extending at the Special Servicer
** Scheduled Principal Balance as of deal origination
*** Currently Paid Off but had previously been extended
**** Previously extended, in the process of being extended again


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

DistributionDelinq 1 Month         Delinq 2 Months
Date        #         Balance      #             Balance
    10/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    09/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    08/16/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    07/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    06/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    05/17/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    04/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    03/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    02/16/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    01/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    12/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    11/16/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    10/15/98         1    8,991,059             0               0
                 0.55%        0.63%         0.00%           0.00%
    09/15/98         1      635,724             0               0
                 0.55%        0.04%         0.00%           0.00%
    08/17/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    07/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%

DistributionDelinq 3+  Months      Foreclosure/Bankruptcy
Date        #         Balance      #             Balance
    10/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    09/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    08/16/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    07/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    06/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    05/17/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    04/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    03/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    02/16/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    01/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    12/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    11/16/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    10/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    09/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    08/17/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    07/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%

DistributionREO                    Modifications
Date        #         Balance      #             Balance
    10/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    09/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    08/16/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    07/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    06/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    05/17/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    04/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    03/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    02/16/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    01/15/99         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    12/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    11/16/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    10/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    09/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    08/17/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%
    07/15/98         0            0             0               0
                 0.00%        0.00%         0.00%           0.00%

DistributionPrepayments            Curr Weighted Avg.
Date        #         Balance      Coupon        Remit
    10/15/99         0            0       7.2034%         7.0878%
                 0.00%        0.00%
    09/15/99         1    3,121,188       7.2713%         7.1545%
                 0.56%        0.22%
    08/16/99         0            0       7.2712%         7.1543%
                 0.00%        0.00%
    07/15/99         0            0       7.2026%         7.0870%
                 0.00%        0.00%
    06/15/99         0            0       7.2710%         7.1541%
                 0.00%        0.00%
    05/17/99         0            0       7.2025%         7.0868%
                 0.00%        0.00%
    04/15/99         0            0       7.2707%         7.1538%
                 0.00%        0.00%
    03/15/99         0            0       7.0657%         6.9524%
                 0.00%        0.00%
    02/16/99         0            0       7.2706%         7.1537%
                 0.00%        0.00%
    01/15/99         0            0       7.2705%         7.1536%
                 0.00%        0.00%
    12/15/98         0            0       7.2021%         7.0864%
                 0.00%        0.00%
    11/16/98         0            0       7.2703%         7.1534%
                 0.00%        0.00%
    10/15/98         0            0       7.2020%         7.0863%
                 0.00%        0.00%
    09/15/98         0            0       7.2702%         7.1533%
                 0.00%        0.00%
    08/17/98         0            0       7.2701%         7.1532%
                 0.00%        0.00%
    07/15/98         0            0       7.1946%         7.0789%
                 0.00%        0.00%

Note:  Effective with the October 1998 Distribution, Foreclosure,
Bankruptcy,
 and REO totals will no longer be included in the delinquenc


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Delinquent Loan Detail

                      Paid                       Outstanding
Disclosure Doc        Thru         Current P&I   P&I
Control #             Date         Advance       Advances**

       15888               09/01/99    107,523.01      107,523.01
       16084               09/01/99     47,826.38       47,826.38
       16173               09/01/99     45,915.18       45,915.18
       16174               09/01/99     56,998.15       56,998.15
       16223               09/01/99     12,942.97       12,942.97
       16510               09/01/99     26,256.04       26,256.04
       16517               09/01/99     16,421.72       16,421.72
       16614               09/01/99     87,956.33       87,956.33
       16686               09/01/99     48,950.00       48,950.00
       16691               09/01/99     79,602.25       79,602.25
       16695               09/01/99     13,757.91       13,757.91
       16721               09/01/99     50,055.62       50,055.62
       16797               09/01/99     37,976.74       37,976.74
       16847               09/01/99     49,211.62       49,211.62
       16848               09/01/99     26,272.40       26,272.40
       16849               09/01/99     27,066.63       27,066.63
       16851               09/01/99     22,692.02       22,692.02
       16869               09/01/99     31,738.53       31,738.53
       16895               09/01/99     51,957.37       51,957.37
       16896               09/01/99     34,535.96       34,535.96
       16897               09/01/99     18,721.90       18,721.90
       16916               09/01/99     66,989.92       66,989.92
       16929               09/01/99     22,677.08       22,677.08
       16954               09/01/99      7,144.48        7,144.48
       16956               09/01/99     19,188.04       19,188.04
       16957               09/01/99     12,247.67       12,247.67
       16958               09/01/99     13,778.64       13,778.64
       17004               09/01/99     57,482.48       57,482.48
       17032               09/01/99     18,060.52       18,060.52
       17049               09/01/99     19,814.29       19,814.29
       17063               09/01/99     45,322.51       45,322.51
       17075               09/01/99     84,470.01       84,470.01
       17102               09/01/99     13,506.45       13,506.45
       17118               09/01/99     18,003.88       18,003.88
       17119               09/01/99      2,870.18        2,870.18
       17162               09/01/99     31,109.60       31,109.60
       17194               09/01/99  1,561,586.84    1,561,586.84
           8               09/01/99     42,589.89       42,589.89
          15               09/01/99     14,672.81       14,672.81
           3               09/01/99     79,173.09       79,173.09
           4               09/01/99     65,945.95       65,945.95
          10               09/01/99     32,481.89       32,481.89
          17               09/01/99      7,396.14        7,396.14
          19               09/01/99    142,614.36      142,614.36
          26               09/01/99     29,932.19       29,932.19
          33               09/01/99     14,735.94       14,735.94
          34               09/01/99     14,409.65       14,409.65







































            Out. Property          Special
Disclosure DProtectionAdvance      Servicer      Foreclosure     Bankruptcy
Control #   Advances  Description (Transfer Date Date            Date

       15888      0.00 B
       16084      0.00 A
       16173      0.00 A
       16174      0.00 A
       16223      0.00 B
       16510      0.00 A
       16517      0.00 B
       16614      0.00 A
       16686      0.00 A
       16691      0.00 A
       16695      0.00 B
       16721      0.00 A
       16797      0.00 B
       16847      0.00 A
       16848      0.00 A
       16849      0.00 A
       16851      0.00 A
       16869      0.00 A
       16895      0.00 A
       16896      0.00 A
       16897      0.00 A
       16916      0.00 A
       16929      0.00 B
       16954      0.00 A
       16956      0.00 A
       16957      0.00 A
       16958      0.00 A
       17004      0.00 B
       17032      0.00 A
       17049      0.00 A
       17063      0.00 A
       17075      0.00 B
       17102      0.00 A
       17118      0.00 A
       17119      0.00 A
       17162      0.00 B
       17194      0.00 A
           8      0.00 A
          15      0.00 A
           3      0.00 A
           4      0.00 A
          10      0.00 A
          17      0.00 A
          19      0.00 A
          26      0.00 A
          33      0.00 A
          34      0.00 A








































Disclosure DREO
Control #   Date
           0
       15888
       16084
       16173
       16174
       16223
       16510
       16517
       16614
       16686
       16691
       16695
       16721
       16797
       16847
       16848
       16849
       16851
       16869
       16895
       16896
       16897
       16916
       16929
       16954
       16956
       16957
       16958
       17004
       17032
       17049
       17063
       17075
       17102
       17118
       17119
       17162
       17194
           8
          15
           3
           4
          10
          17
          19
          26
          33
          34






































Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Pool Total

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Distribution of Principal Balances
Current  Scheduled                 Number         Scheduled      Based on
Balances                           of Loans      Balance         Balance
        0.00to           499,999.99             1      406,461.95        0.03%
  500,000.00to           999,999.99             6    5,140,949.65        0.37%
1,000,000.00to         1,999,999.99            26   37,770,009.51        2.69%
2,000,000.00to         2,999,999.99            40   96,917,417.63        6.91%
3,000,000.00to         3,999,999.99            22   77,497,240.35        5.53%
4,000,000.00to         4,999,999.99            15   65,762,578.21        4.69%
5,000,000.00to         5,999,999.99            14   77,303,174.62        5.52%
6,000,000.00to         6,999,999.99            10   65,461,015.01        4.67%
7,000,000.00to         7,999,999.99             8   58,777,459.55        4.19%
8,000,000.00to         8,999,999.99             8   68,789,008.23        4.91%
9,000,000.00to         9,999,999.99             4   37,883,325.33        2.70%
10,000,000.0to        11,999,999.99             7   78,801,704.90        5.62%
12,000,000.0to        13,999,999.99             2   26,261,639.35        1.87%
14,000,000.0to        16,999,999.99             5   78,230,468.72        5.58%
17,000,000.0to        31,999,999.99             2   45,530,579.91        3.25%
32,000,000.0to        225,437,399.0             9  581,098,330.19       41.46%
Total                                         1791,401,631,363.11      100.00%
                      Average Scheduled Balance is                7,830,342.81
                      Maximum  Scheduled Balance is              220,361,430.00
                      Minimum  Scheduled Balance is                 406,461.95

Distribution of Property Types
                                   Number         Scheduled      Based on
Property Types                     of Loans      Balance         Balance
Other                                          13  418,755,926.79       29.88%
Retail                                         40  269,395,283.68       19.22%
Multifamily                                    58  229,038,526.64       16.34%
Lodging                                        10  164,697,267.43       11.75%
Office                                         25  151,521,242.64       10.81%
Health Care                                    13   61,660,568.52        4.40%
Mixed Use                                       8   59,105,023.59        4.22%
Industrial                                     11   43,322,404.29        3.09%
Mobile Home                                     1    4,135,119.53        0.30%



Total                                         1791,401,631,363.11      100.00%

Distribution of Mortgage Interest Rates
 Current Mortgage                  Number         Scheduled      Based on
Interest Rate                      of Loans      Balance         Balance
     6.0000%or        less                      0            0.00        0.00%
     6.0000%to              6.2500%             0            0.00        0.00%
     6.2500%to              6.5000%             0            0.00        0.00%
     6.5000%to              6.7500%             2   42,615,743.60        3.04%
     6.7500%to              7.0000%            16  376,504,941.63       26.86%
     7.0000%to              7.2500%            66  379,201,080.01       27.05%
     7.2500%to              7.5000%            51  403,866,297.74       28.81%
     7.5000%to              7.7500%            28  128,842,650.12        9.19%
     7.7500%to              8.0000%             9   41,792,318.99        2.98%
     8.0000%to              8.2500%             3   10,347,153.72        0.74%
     8.2500%to              8.5000%             3   14,361,223.90        1.02%
     8.5000%to              8.7500%             0            0.00        0.00%
     8.7500%to              9.2500%             1    4,099,953.40        0.29%
Total                                         1791,401,631,363.11      100.00%
            W/Avg Mortgage Interest Rate is                            7.2034%
            Minimum Mortgage Interest Rate is                          6.7000%
            Maximum Mortgage Interest Rate is                          8.8750%

Geographic Distribution
                      Number        Scheduled    Based on
Geographic Location   of Loans     Balance       Balance
Various                           2253,945,863.78          18.12%
New York                         13147,772,832.89          10.54%
Texas                            20143,477,801.03          10.24%
California                       25132,198,860.74           9.43%
Arizona                          20 90,913,975.22           6.49%
District of Columbia              3 63,637,435.71           4.54%
Washington                        4 61,715,481.08           4.40%
Florida                          11 53,417,185.21           3.81%
Minnesota                         3 50,687,374.94           3.62%
Maryland                          8 36,759,046.26           2.62%
Michigan                          7 35,875,315.10           2.56%
Oregon                            5 35,385,550.61           2.52%
Louisiana                         1 34,039,981.00           2.43%
New Jersey                        7 29,133,659.74           2.08%
Virginia                          5 26,513,091.32           1.89%
Missouri                          6 25,349,266.58           1.81%
Georgia                          10 24,362,056.14           1.74%
Utah                              4 23,679,535.00           1.69%
Massachusetts                     3 22,778,502.96           1.63%
Rhode Island                      2 16,915,490.27           1.21%
Delaware                          2 15,626,100.13           1.11%
Illinois                          3 15,439,952.41           1.10%
Pennsylvania                      2 12,739,350.39           0.91%
North Carolina                    3 10,302,948.80           0.74%
Colorado                          1  6,875,056.73           0.49%
Nebraska                          1  5,941,158.07           0.42%
Nevada                            1  5,615,667.73           0.40%
Wisconsin                         1  4,440,838.28           0.32%
Connecticut                       2  4,323,554.64           0.31%
Kentucky                          1  3,449,522.04           0.25%
Other                             3  8,318,908.31           0.59%
Total                           1791,401,631,363.         100.00%


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203
Pool Total

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Loan Seasoning
                      Number        Scheduled    Based on
Number of Years       of Loans     Balance       Balance
1 year or less                    0          0.00           0.00%
 1+ to 2 years                  1771,394,787,011.          99.51%
2+ to 3 years                     0          0.00           0.00%
3+ to 4 years                     2  6,844,351.79           0.49%
4+ to 5 years                     0          0.00           0.00%
5+ to 6 years                     0          0.00           0.00%
6+ to 7 years                     0          0.00           0.00%
7+ to 8 years                     0          0.00           0.00%
8+ to 9 years                     0          0.00           0.00%
9+ to 10 years                    0          0.00           0.00%
10  years or more                 0          0.00           0.00%
Total                           1791,401,631,363.         100.00%
                                   Weighted Avera             1.6

Distribution of Remaining Term
Fully Amortizing
Fully Amortizing                   Number         Scheduled      Based on
Mortgage Loans                     of Loans      Balance         Balance
            60 months or less                   4   20,186,697.15        1.44%
            61 to 120 months                    4    7,299,003.95        0.52%
            121 to 180 months                  34  122,057,745.99        8.71%
            181 to 240 months                   0            0.00        0.00%
            241 to 360 months                   0            0.00        0.00%
Total                                          42  149,543,447.09       10.67%
                              0.00                                         195

Distribution of DSCR
            Debt Service           Number         Scheduled      Based on
            Coverage Ratio (1)     of Loans      Balance         Balance
           1or        less                     15   97,945,500.12        6.99%
      1.0001to                  1.1             8   35,354,309.08        2.52%
      1.1001to                  1.2            11   58,980,308.57        4.21%
      1.2001to                  1.3            13  135,699,688.43        9.68%
      1.3001to                  1.4            24  146,481,935.87       10.45%
      1.4001to                  1.5            19  370,413,821.74       26.43%
      1.5001to                  1.6            14  191,257,888.44       13.65%
      1.6001to                  1.7             8   29,458,244.55        2.10%
      1.7001to                  1.8             7   24,355,161.39        1.74%
      1.8001to                  1.9             6   22,689,316.54        1.62%
      1.9001to                    2             3   13,333,998.49        0.95%
      2.0001to                  2.1             6   72,709,074.36        5.19%
      2.1001to                  2.2             4   11,061,206.46        0.79%
      2.2001to                  2.4            13   52,443,082.54        3.74%
      2.4001&         above                    17   96,619,044.75        6.89%
Unknown                                        11   42,828,781.78        3.06%
Total                                         1791,401,631,363.11      100.00%
Weighted Average Debt Service Coverage Ratio is                          1.529

Distribution of Amortization Type
                      Number        Scheduled    Based on
Amortization Type     of Loans     Balance       Balance
Fully Amortizing                 42149,543,447.09          10.67%
Amortizing Balloon              1371,252,087,916.          89.33%








Total                           1791,401,631,363.         100.00%

Distribution of Remaining Term
Balloon Loans
            Balloon                Number         Scheduled      Based on
            Mortgage Loans         of Loans      Balance         Balance
            12 months or less                   0            0.00        0.00%
            13 to 24 months                     0            0.00        0.00%
            25 to 36 months                     0            0.00        0.00%
            37 to 48 months                     1    6,410,165.99        0.46%
            49 to 60 months                     0            0.00        0.00%
            61 to 120 months                   93  745,833,236.53       53.21%
            121 to 180 months                   9  134,858,449.31        9.62%
            181 to 240 months                  34  364,986,064.19       26.04%
Total                                         1371,252,087,916.02       89.33%
                                  0                                        164

NOI Aging
                                   Number         Scheduled      Based on
NOI Date                           of Loans      Balance         Balance
1 year or less                                1531,068,637,369.21       76.24%
1 to 2 years                                   15  290,165,212.12       20.70%
2 Years or More                                 0            0.00        0.00%
Unknown                                        11   42,828,781.78        3.06%
Total                                         1791,401,631,363.11      100.00%

(1) Debt Service Coverage Ratios are calculated as described in the
(2) prospectus, values are updated periodically as new NOI figures
(3) became available from borrowers on an asset level.
      Neither the Trustee, Servicer, Special Servicer or Underwriter
makes any representation as to the accuracy of the data provided by
the borrower for this calculation.


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Loan Level Detail
                      Property
Disclosure            Type         Maturity
Control #   Group     Code         Date

           1GMAC98C1  Other              11/01/12
           2GMAC98C1  Retail             01/01/28
           3GMAC98C1  Retail             03/01/28
           4GMAC98C1  Other              12/01/22
           5GMAC98C1  Retail             03/01/28
           7GMAC98C1  Retail             12/01/27
           8GMAC98C1  Industrial         12/01/10
           9GMAC98C1  Office             03/01/23
          10GMAC98C1  Retail             03/01/23
          11GMAC98C1  Mobile Home        03/01/28
          12GMAC98C1  Mixed Use          03/01/28
          13GMAC98C1  Industrial         03/01/18
          14GMAC98C1  Lodging            03/01/23
          15GMAC98C1  Industrial         12/01/10
          16GMAC98C1  Mixed Use          03/01/28
          17GMAC98C1  Multifamily        03/01/23
          18GMAC98C1  Other              01/01/28
          19GMAC98C1  Office             04/01/28
          23GMAC98C1  Retail             04/01/28
          24GMAC98C1  Retail             04/01/28
          25GMAC98C1  Retail             04/01/28
          26GMAC98C1  Mixed Use          03/01/23
          27GMAC98C1  Industrial         04/01/28
          28GMAC98C1  Retail             04/01/28
          30GMAC98C1  Office             04/01/28
          31GMAC98C1  Office             04/01/28
          32GMAC98C1  Retail             04/01/23
          33GMAC98C1  Other              04/01/23
          34GMAC98C1  Multifamily        04/01/13
       15888GMAC98C1  Retail             01/01/08
       16084GMAC98C1  Mixed Use          03/01/08
       16145GMAC98C1  Retail             01/01/08
       16173GMAC98C1  Health Care        01/01/08
       16174GMAC98C1  Health Care        01/01/08
       16223GMAC98C1  Health Care        01/01/08
       16257GMAC98C1  Retail             01/31/08
       16288GMAC98C1  Multifamily        02/01/08
       16304GMAC98C1  Multifamily        01/01/05
       16305GMAC98C1  Multifamily        12/01/04
       16424GMAC98C1  Retail             12/01/07
       16458GMAC98C1  Retail             12/01/07
       16482GMAC98C1  Health Care        01/01/13
       16498GMAC98C1  Office             01/31/08
       16510GMAC98C1  Health Care        01/01/08
       16517GMAC98C1  Health Care        03/01/08
       16522GMAC98C1  Lodging            10/01/07
       16539GMAC98C1  Lodging            04/01/23
       16547GMAC98C1  Mixed Use          02/01/13
       16553GMAC98C1  Office             12/01/07
       16571GMAC98C1  Retail             12/01/07
       16592GMAC98C1  Office             04/01/08
       16598GMAC98C1  Industrial         12/01/07
       16609GMAC98C1  Industrial         03/05/08
       16614GMAC98C1  Other              03/01/05
       16632GMAC98C1  Lodging            12/31/22
       16633GMAC98C1  Lodging            12/31/22
       16658GMAC98C1  Retail             11/30/07
       16662GMAC98C1  Office             04/01/08
       16662GMAC98C1  Office             04/01/08
       16665GMAC98C1  Retail             01/01/08
       16666GMAC98C1  Retail             01/01/08
       16686GMAC98C1  Health Care        12/01/07
       16691GMAC98C1  Retail             01/01/08
       16695GMAC98C1  Retail             03/01/13
       16708GMAC98C1  Multifamily        12/31/07
       16717GMAC98C1  Health Care        03/01/08
       16721GMAC98C1  Health Care        03/01/08
       16724GMAC98C1  Multifamily        12/01/07
       16725GMAC98C1  Multifamily        12/01/07
       16726GMAC98C1  Multifamily        12/01/07
       16731GMAC98C1  Retail             07/01/13
       16734GMAC98C1  Retail             01/30/08
       16739GMAC98C1  Office             01/01/18
       16757GMAC98C1  Office             03/01/08
       16761GMAC98C1  Other              01/01/05
       16762GMAC98C1  Industrial         01/01/08
       16773GMAC98C1  Multifamily        12/01/04
       16797GMAC98C1  Retail             05/22/10
       16801GMAC98C1  Retail             03/01/08
       16807GMAC98C1  Retail             01/01/08
       16809GMAC98C1  Industrial         02/01/08
       16810GMAC98C1  Retail             01/01/09
       16825GMAC98C1  Health Care        12/01/07
       16826GMAC98C1  Health Care        12/01/07
       16835GMAC98C1  Retail             02/01/10
       16837GMAC98C1  Retail             12/10/07
       16847GMAC98C1  Multifamily        01/01/08
       16848GMAC98C1  Multifamily        01/01/08
       16849GMAC98C1  Office             03/01/08
       16851GMAC98C1  Multifamily        01/01/08
       16861GMAC98C1  Retail             04/01/08
       16863GMAC98C1  Health Care        03/01/08
       16866GMAC98C1  Multifamily        11/01/17
       16867GMAC98C1  Multifamily        11/01/17
       16868GMAC98C1  Multifamily        11/01/17
       16869GMAC98C1  Multifamily        11/01/17
       16870GMAC98C1  Multifamily        11/01/17
       16871GMAC98C1  Multifamily        11/01/17
       16872GMAC98C1  Multifamily        11/01/17
       16873GMAC98C1  Multifamily        11/01/17
       16874GMAC98C1  Multifamily        11/01/17
       16875GMAC98C1  Multifamily        11/01/17
       16876GMAC98C1  Multifamily        11/01/17
       16877GMAC98C1  Multifamily        11/01/17
       16878GMAC98C1  Multifamily        11/01/17
       16879GMAC98C1  Multifamily        11/01/17
       16880GMAC98C1  Multifamily        11/01/17
       16881GMAC98C1  Multifamily        11/01/17
       16882GMAC98C1  Multifamily        11/01/17
       16883GMAC98C1  Multifamily        11/01/17
       16884GMAC98C1  Multifamily        11/01/17
       16885GMAC98C1  Multifamily        11/01/17
       16886GMAC98C1  Multifamily        11/01/17
       16887GMAC98C1  Multifamily        11/01/17
       16888GMAC98C1  Multifamily        11/01/17
       16889GMAC98C1  Multifamily        11/01/17
       16890GMAC98C1  Multifamily        11/01/17
       16891GMAC98C1  Multifamily        11/01/17
       16892GMAC98C1  Multifamily        11/01/17
       16893GMAC98C1  Multifamily        11/01/17
       16894GMAC98C1  Multifamily        11/01/17
       16895GMAC98C1  Multifamily        11/01/17
       16896GMAC98C1  Multifamily        11/01/17
       16897GMAC98C1  Multifamily        11/01/17
       16898GMAC98C1  Multifamily        11/01/17
       16908GMAC98C1  Multifamily        01/01/08
       16910GMAC98C1  Retail             03/01/08
       16916GMAC98C1  Other              01/01/08
       16924GMAC98C1  Other              01/01/08
       16928GMAC98C1  Multifamily        01/01/08
       16929GMAC98C1  Retail             03/01/08
       16937GMAC98C1  Office             12/31/12
       16940GMAC98C1  Retail             03/01/08
       16942GMAC98C1  Retail             03/01/08
       16947GMAC98C1  Lodging            03/01/23
       16948GMAC98C1  Industrial         02/01/08
       16952GMAC98C1  Mixed Use          01/01/08
       16953GMAC98C1  Office             01/01/08
       16954GMAC98C1  Office             01/01/08
       16955GMAC98C1  Office             01/01/08
       16956GMAC98C1  Mixed Use          01/01/08
       16957GMAC98C1  Office             01/01/08
       16958GMAC98C1  Office             01/01/09
       16959GMAC98C1  Office             02/01/08
       16960GMAC98C1  Multifamily        02/01/08
       16964GMAC98C1  Multifamily        01/01/08
       16971GMAC98C1  Office             03/01/07
       16975GMAC98C1  Mixed Use          02/01/08
       16987GMAC98C1  Lodging            03/01/23
       16988GMAC98C1  Lodging            03/01/23
       16996GMAC98C1  Other              03/01/13
       16997GMAC98C1  Office             03/01/13
       16998GMAC98C1  Retail             03/01/18
       16999GMAC98C1  Retail             03/01/18
       17000GMAC98C1  Multifamily        01/01/08
       17004GMAC98C1  Office             03/01/08
       17028GMAC98C1  Office             03/01/08
       17032GMAC98C1  Multifamily        02/01/08
       17034GMAC98C1  Retail             02/01/08
       17049GMAC98C1  Health Care        03/01/08
       17054GMAC98C1  Retail             03/01/08
       17056GMAC98C1  Other              02/01/08
       17063GMAC98C1  Multifamily        02/01/08
       17070GMAC98C1  Multifamily        02/01/03
       17075GMAC98C1  Multifamily        03/01/08
       17088GMAC98C1  Other              07/01/18
       17093GMAC98C1  Office             12/31/04
       17102GMAC98C1  Multifamily        02/01/08
       17108GMAC98C1  Retail             03/01/08
       17113GMAC98C1  Multifamily        03/01/08
       17118GMAC98C1  Multifamily        03/01/08
       17119GMAC98C1  Multifamily        03/01/08
       17162GMAC98C1  Other              03/01/08
       17169GMAC98C1  Multifamily        03/01/08
       17177GMAC98C1  Office             03/01/08
       17194GMAC98C1  Other              02/01/08
       17223GMAC98C1  Office             02/01/05
       17232GMAC98C1  Industrial         03/01/08
       17236GMAC98C1  Retail             04/01/08
       17239GMAC98C1  Lodging            04/01/23
       17279GMAC98C1  Lodging            04/01/23
       17353GMAC98C1  Industrial         03/09/08


                      Operating                  Ending
Disclosure            Statement                  Principal       Note
Control #   DSCR      Date         State         Balance         Rate

           1  1.203253     12/31/98LA                  34,039,981      6.9800%
           2   1.58638     09/30/98FL                  11,793,052      7.3000%
           3   1.55127     12/31/98MD                  11,086,910      7.6500%
           4                       NJ                   8,851,215      7.3670%
           5   1.17629     12/31/98CA                   8,752,196      6.9400%
           7                       CO                   6,875,057      7.3800%
           8   1.18981     12/31/98MD                   5,090,571      7.5500%
           9   1.06669     12/31/98AZ                   4,877,844      7.0800%
          10   1.39409     12/31/98WI                   4,440,838      7.2000%
          11    1.3293     12/31/98FL                   4,135,120      7.3200%
          12   1.24845     12/31/98MA                   4,033,569      7.0700%
          13   1.32723     12/31/98MA                   2,644,854      7.0500%
          14   2.00525     12/31/98CA                   2,442,690      7.5000%
          15    1.5164     12/31/98MD                   1,753,780      7.5500%
          16   1.16588     12/31/98NJ                   1,422,160      7.2000%
          17                       MI                   1,005,531      7.2650%
          18  1.501941     12/31/98TX                  60,898,368      7.1430%
          19   1.34104     12/31/98NY                  20,462,030      7.4050%
          23   2.24125     12/31/98CA                   7,184,393      6.8900%
          24   1.61088     12/31/98AZ                   5,357,379      7.1100%
          25   1.28508     12/31/98CA                   4,924,926      7.1700%
          26                       NY                   3,911,493      7.7300%
          27   1.71747     12/31/98VA                   3,744,560      7.3200%
          28   1.47276     12/31/98KY                   3,449,522      7.3800%
          30   1.21453     12/31/98NJ                   2,857,690      7.3200%
          31   1.04192     12/31/98NY                   2,462,749      7.2100%
          32                       NY                   2,151,200      7.3400%
          33  1.436223     12/31/98MI                   2,051,025      7.0100%
          34   1.31551     12/31/98NY                   1,505,475      7.1300%
       15888   0.96673     12/31/98RI                  15,436,387      7.4400%
       16084                       NY                   6,082,691      8.1250%
       16145   1.35803     12/31/98TX                   2,681,138      7.6600%
       16173   1.41397     06/30/98PA                   5,683,710      8.4500%
       16174   1.68542     06/30/98PA                   7,055,640      8.4500%
       16223   1.09554     12/31/98CA                   1,621,874      8.3000%
       16257  1.943583     12/31/98MI                   6,859,931      7.1000%
       16288   1.14738     12/31/98TX                   2,653,461      7.0300%
       16304   0.39662     12/31/98FL                   1,019,787      7.5000%
       16305   0.83863     12/31/98FL                     629,100      7.6250%
       16424   1.30277     12/31/98TX                   2,702,666      7.5700%
       16458   1.66066     12/31/98CA                   4,572,684      7.7500%
       16482   5.52586     12/31/98CA                     936,330      8.2400%
       16498   1.41275     12/31/98NJ                   2,205,880      7.5700%
       16510   1.97178     12/31/98CA                   3,328,132      8.1600%
       16517                       WA                   2,151,620      7.7700%
       16522   2.39049     12/31/98CA                   4,099,953      8.8750%
       16539   2.09713     12/31/98WA                  47,913,094      7.3400%
       16547   1.48629     12/31/98NY                  34,433,457      7.3600%
       16553   1.50881     12/31/98CA                   5,632,528      7.9000%
       16571   1.42521     12/31/98OR                   8,549,965      7.5600%
       16592    1.3215     12/31/98AZ                   5,130,088      7.6250%
       16598   1.63546     06/30/98CA                     974,205      7.7500%
       16609   1.00524     09/30/98MA                  16,100,079      7.3750%
       16614  0.412234     12/31/98DE                  13,180,813      7.0200%
       16632   1.87348     12/31/98WA                   5,560,113      7.7500%
       16633   2.32499     12/31/98WA                   6,090,655      7.5000%
       16658   1.22127     12/31/98TX                   8,255,693      7.5800%
       16662   1.61327     12/31/98CA                   1,626,747      7.5000%
       16662   1.61327     12/31/98CA                   1,626,747      7.5000%
       16665    1.7184     12/31/98VA                   2,248,820      7.4700%
       16666   1.82209     12/31/98VA                   1,573,289      7.4700%
       16686   1.35906     12/31/98MO                   6,660,256      7.2800%
       16691   1.31075     12/31/98UT                  11,405,973      7.4600%
       16695    1.7192     12/31/98CA                   1,408,909      7.5000%
       16708   1.87406     11/30/98AZ                   1,385,812      7.8750%
       16717   2.26446     09/30/98TN                   3,425,024      7.9400%
       16721                       FL                   6,552,887      7.7800%
       16724   0.73003     12/31/98AZ                   7,755,462      7.2500%
       16725   0.80295     12/31/98AZ                   8,835,336      7.2500%
       16726   0.50807     12/31/98AZ                   5,497,543      7.2500%
       16731   1.46628     12/31/98VA                   3,946,745      7.5000%
       16734   1.55026     12/31/98CT                     875,265      7.5400%
       16739  1.254255     12/31/98NE                   5,941,158      7.2100%
       16757   1.42287     12/31/98NC                   3,218,805      7.2500%
       16761   1.44367     12/31/98TX                   9,834,965      7.5300%
       16762   1.37813     12/31/98FL                   2,165,198      7.7500%
       16773   1.09382     12/31/98FL                   1,228,710      7.6250%
       16797   0.98859     12/31/98CT                   3,448,289      7.1250%
       16801   0.87348     12/31/98UT                   2,264,266      7.2900%
       16807  1.430771     12/31/98CA                   7,373,829      7.4300%
       16809   2.00549     12/31/98MN                   2,309,263      7.0000%
       16810   1.36375     12/31/98CA                  25,068,550      7.4000%
       16825   1.26296     12/31/98TX                   9,192,154      7.3800%
       16826   1.54592     12/31/98TX                  10,943,040      7.3800%
       16835                       NJ                   2,344,089      7.7500%
       16837   1.47745     12/31/98MN                  44,186,218      7.0500%
       16847   1.53154     12/31/98MD                   7,078,644      7.4200%
       16848   1.12261     12/31/98MD                   3,775,400      7.4300%
       16849   1.35166     10/31/98NC                   3,938,209      7.3200%
       16851  1.366583     12/31/98MD                   3,264,041      7.4200%
       16861    1.5649     12/31/98UT                     977,987      7.3900%
       16863   0.76494     12/31/98AR                   2,630,797      7.9800%
       16866   2.31994     12/31/98AZ                   3,732,445      7.0190%
       16867   2.42634     12/31/98AZ                   2,046,483      7.0190%
       16868   2.51359     12/31/98AZ                   2,764,879      7.0190%
       16869   2.21064     12/31/98AZ                   3,946,128      7.0190%
       16870    2.0977     12/31/98AZ                   7,069,181      7.0190%
       16871   2.32583     12/31/98AZ                   2,150,252      7.0190%
       16872   2.18831     12/31/98AZ                   2,003,351      7.0190%
       16873   2.14229     12/31/98AZ                   1,513,273      7.0190%
       16874   2.03801     12/31/98AZ                   7,671,951      7.0190%
       16875   2.11478     12/31/98AZ                   4,032,793      7.0190%
       16876   2.40468     12/31/98AZ                   8,652,870      7.0190%
       16877   2.28336     12/31/98AZ                   3,751,325      7.0190%
       16878   1.55262     12/31/98AZ                           0      0.0000%
       16879   2.23522     12/31/98AZ                   2,739,580      7.0190%
       16880   1.84799     12/31/98AZ                           0      0.0000%
       16881   2.53396     12/31/98TX                   1,183,264      7.0190%
       16882     2.527     12/31/98TX                   3,013,850      7.0190%
       16883   2.39227     12/31/98TX                   3,991,385      7.0190%
       16884   2.43097     12/31/98TX                   2,036,634      7.0190%
       16885   2.58428     12/31/98TX                   1,214,893      7.0190%
       16886   2.65485     12/31/98TX                   2,218,974      7.0190%
       16887    2.8955     12/31/98TX                   2,020,099      7.0190%
       16888   2.69848     12/31/98TX                   1,595,331      7.0190%
       16889   2.39987     12/31/98TX                   2,631,746      7.0190%
       16890   2.23005     12/31/98TX                   2,240,208      7.0190%
       16891   1.88084     12/31/98FL                   6,783,520      7.0190%
       16892   2.16974     12/31/98GA                   3,511,790      7.0190%
       16893   2.03109     12/31/98GA                   5,302,896      7.0190%
       16894   2.50607     12/31/98GA                   4,099,360      7.0190%
       16895   2.23766     12/31/98IL                   6,459,987      7.0190%
       16896   2.43181     12/31/98MI                   4,293,940      7.0190%
       16897   2.82654     09/30/98MI                   2,327,740      7.0190%
       16898   1.96528     12/31/98NC                   3,145,935      7.0190%
       16908   1.73651     12/31/98NY                   5,515,000      7.2700%
       16910   1.21016     12/31/98ID                   2,263,087      7.1200%
       16916  1.158264     12/31/98NJ                   9,824,897      7.2200%
       16924  1.481189     12/31/98NJ                   1,627,729      7.0500%
       16928   1.76679     12/31/98CA                   3,030,000      7.0700%
       16929   1.04382     12/31/98IL                   3,322,161      7.2500%
       16937   2.90899     12/31/98NY                  45,000,000      6.8500%
       16940   1.66321     12/31/98FL                   2,952,524      7.0500%
       16942   0.81074     06/30/98NV                   5,615,668      7.3750%
       16947   2.41119     12/31/98FL                  11,735,294      7.7500%
       16948    1.4044     12/31/98CA                   2,947,897      6.9900%
       16952   1.29918     12/31/98GA                     748,062      7.3750%
       16953   1.38198     12/31/98GA                   1,120,619      7.3750%
       16954    1.1039     12/31/98GA                   1,032,149      7.3750%
       16955   1.44707     12/31/98GA                   2,015,149      7.3750%
       16956   1.52227     12/31/98GA                   2,772,058      7.3750%
       16957   1.84998     09/30/98GA                   1,769,399      7.3750%
       16958   1.60033     12/31/98GA                   1,990,574      7.3750%
       16959    1.4753     12/31/98FL                   4,421,993      7.0000%
       16960   1.32188     12/31/98UT                   9,031,310      6.7000%
       16964    1.1243     12/31/98MI                  16,679,257      6.7900%
       16971                       MO                   1,475,108      7.2500%
       16975  1.388256     12/31/98CA                   5,701,533      7.1100%
       16987   1.36876     12/31/98OR                   8,458,034      7.7700%
       16988   1.54859     12/31/98OR                  10,127,726      7.7700%
       16996   1.66997     12/31/98OR                   4,928,492      7.7200%
       16997  1.310907     12/31/98OR                   3,321,334      7.6700%
       16998    0.9563     12/31/98MO                   2,689,859      6.8000%
       16999   1.01735     12/31/98MO                   3,280,667      6.8000%
       17000                       NY                   1,427,891      7.9400%
       17004   1.21529     12/31/98CA                   8,433,700      7.1300%
       17028   1.70805     12/31/98IL                   5,657,805      7.1250%
       17032  1.766095     12/31/98MD                   2,750,068      6.8500%
       17034   1.51115     12/31/98MN                   4,191,894      7.3750%
       17049   2.89166     09/30/98RI                   1,479,104      7.6200%
       17054   1.33382     12/31/98VA                  14,999,678      7.3900%
       17056  1.232227     12/31/98VV                  33,584,434      6.7500%
       17063    1.1654     09/30/98MO                   6,685,865      7.1700%
       17070   1.27009     12/31/98CA                   6,410,166      6.9200%
       17075   0.11691     12/31/98TX                  11,709,709      7.0100%
       17088   1.20339     12/31/98CA                  15,015,068      7.6300%
       17093    0.9585     12/31/98NY                  13,080,826      6.9100%
       17102   1.45635     12/31/98MD                   1,959,632      7.3400%
       17108   1.37276     12/31/98CA                   2,266,398      7.6100%
       17113  1.175613     12/31/98MI                   2,657,890      7.2700%
       17118  1.334696     09/30/98DC                   2,549,625      7.6000%
       17119  1.107177     09/30/98DC                     406,462      7.6000%
       17162  1.445135     12/31/98MO                   4,557,513      7.2500%
       17169   1.56284     12/31/98DE                   2,445,287      7.0000%
       17177   1.39536     12/31/98CA                   1,388,633      7.4200%
       17194   1.40313     06/30/98VV                 220,361,430      6.8100%
       17223   1.08589     12/31/98TX                   2,460,225      7.4500%
       17232   1.36946     12/31/98CA                   1,440,337      7.4200%
       17236   1.86211     12/31/98CA                   5,617,184      7.2300%
       17239   1.56047     12/31/98DC                  60,681,349      7.5000%
       17279   1.43288     12/31/98NY                   7,588,360      7.6250%
       17353    0.9585     12/31/98NY                   4,151,659      6.9100%

                                                 1,401,631,363.11

                                                 Loan
Disclosure  Scheduled              Prepayment    Status
Control #   P&I       Prepayment   Date          Code (1)

           1331,265.50         0.00
           2 82,268.51         0.00
           3 79,820.36         0.00               A
           4 66,462.97         0.00               A
           5 58,853.72         0.00
           7 48,371.12         0.00
           8 42,887.47         0.00               A
           9 35,594.54         0.00
          10 32,741.29         0.00               A
          11 28,851.09         0.00
          12 27,470.42         0.00
          13 21,403.33         0.00
          14 18,475.17         0.00
          15 14,775.33         0.00               A
          16  9,808.49         0.00
          17  7,454.87         0.00               A
          18418,459.01         0.00
          19143,809.00         0.00               A
          23 48,028.99         0.00
          24 36,595.23         0.00
          25 33,837.93         0.00
          26 30,160.65         0.00               A
          27 26,103.36         0.00
          28 24,185.58         0.00
          30 19,921.00         0.00
          31 16,986.63         0.00
          32 16,029.54         0.00
          33 14,855.75         0.00               A
          34 14,497.79         0.00               A
       15888109,132.36         0.00               B
       16084 48,460.75         0.00               A
       16145 19,353.03         0.00
       16173 46,507.90         0.00               A
       16174 57,733.95         0.00               A
       16223 13,112.11         0.00               B
       16257 48,034.57         0.00
       16288 18,017.60         0.00
       16304  7,250.85         0.00
       16305  4,529.88         0.00
       16424 19,360.39         0.00
       16458 33,313.17         0.00
       16482  9,695.59         0.00
       16498 16,804.24         0.00
       16510 26,603.14         0.00               A
       16517 16,646.13         0.00               B
       16522 34,887.44         0.00
       16539357,021.52         0.00
       16547241,378.60         0.00
       16553 41,609.61         0.00
       16571 61,189.50         0.00
       16592 37,207.46         0.00
       16598  7,553.29         0.00
       16609112,925.39         0.00
       16614 89,330.59         0.00               A
       16632 43,053.74         0.00
       16633 46,186.95         0.00
       16658 59,194.86         0.00
       16662 11,537.04         0.00
       16662 11,537.04         0.00
       16665 15,944.08         0.00
       16666 11,154.58         0.00
       16686 49,644.74         0.00               A
       16691 80,791.40         0.00               A
       16695 13,905.19         0.00               B
       16708 10,842.47         0.00
       16717 26,874.60         0.00
       16721 50,739.06         0.00               A
       16724 53,891.93         0.00
       16725 61,395.87         0.00
       16726 38,201.87         0.00
       16731 29,929.14         0.00
       16734  7,353.17         0.00
       16739 48,853.16         0.00
       16757 22,307.16         0.00
       16761 70,126.99         0.00
       16762 15,761.07         0.00
       16773  8,847.42         0.00
       16797 38,337.79         0.00               B
       16801 15,752.50         0.00
       16807 52,082.06         0.00
       16809 15,634.61         0.00
       16810176,556.85         0.00
       16825 69,098.72         0.00
       16826 82,260.38         0.00
       16835 18,127.89         0.00
       16837300,898.74         0.00
       16847 49,949.62         0.00               A
       16848 26,666.02         0.00               A
       16849 27,477.22         0.00               A
       16851 23,032.32         0.00               A
       16861  7,318.51         0.00
       16863 20,912.13         0.00
       16866 30,409.56         0.00
       16867 16,673.42         0.00
       16868 22,526.46         0.00
       16869 32,150.52         0.00               A
       16870 57,595.14         0.00
       16871 17,518.87         0.00
       16872 16,322.02         0.00
       16873 12,329.17         0.00
       16874 62,506.12         0.00
       16875 32,856.60         0.00
       16876 70,498.03         0.00
       16877 30,563.39         0.00
       16878      0.00         0.00      08/18/99
       16879 22,320.34         0.00
       16880      0.00         0.00
       16881  9,640.47         0.00
       16882 24,554.91         0.00
       16883 32,519.24         0.00
       16884 16,593.19         0.00
       16885  9,898.16         0.00
       16886 18,078.77         0.00
       16887 16,458.47         0.00
       16888 12,997.73         0.00
       16889 21,441.77         0.00
       16890 18,251.77         0.00
       16891 55,267.76         0.00
       16892 28,611.81         0.00
       16893 43,204.59         0.00
       16894 33,398.95         0.00
       16895 52,631.82         0.00               A
       16896 34,984.27         0.00               A
       16897 18,964.93         0.00               A
       16898 25,631.06         0.00
       16908 33,411.71         0.00
       16910 15,487.76         0.00
       16916 68,014.26         0.00               A
       16924 13,231.15         0.00
       16928 17,851.75         0.00
       16929 23,023.45         0.00               B
       16937256,875.00         0.00
       16940 20,271.93         0.00
       16942 42,025.58         0.00
       16947 90,639.46         0.00
       16948 19,938.93         0.00
       16952  5,256.04         0.00
       16953  7,873.70         0.00
       16954  7,252.09         0.00               A
       16955 14,158.84         0.00
       16956 19,477.04         0.00               A
       16957 12,432.15         0.00               A
       16958 13,986.17         0.00               A
       16959 29,938.61         0.00
       16960 59,947.30         0.00
       16964111,819.35         0.00
       16971 21,476.57         0.00
       16975 39,016.97         0.00
       16987 66,109.34         0.00
       16988 79,101.92         0.00
       16996 35,717.01         0.00
       16997 23,957.06         0.00
       16998 21,373.51         0.00
       16999 26,068.05         0.00
       17000 10,579.00         0.00
       17004 58,361.84         0.00               B
       17028 38,738.82         0.00
       17032 18,347.26         0.00               A
       17034 36,852.49         0.00
       17049 19,969.46         0.00               A
       17054106,454.33         0.00
       17056238,502.66         0.00
       17063 46,019.58         0.00               A
       17070 43,060.98         0.00
       17075 85,691.56         0.00               B
       17088115,110.04         0.00
       17093248,271.16         0.00
       17102 13,710.76         0.00               A
       17108 16,255.53         0.00
       17113 18,455.40         0.00
       17118 18,269.68         0.00               A
       17119  2,912.56         0.00               A
       17162 31,584.76         0.00               B
       17169 16,706.78         0.00
       17177  9,781.80         0.00
       171941,584,575.        -0.05               A
       17223 17,394.85         0.00
       17232 10,146.02         0.00
       17236 39,218.52         0.00
       17239462,638.91         0.00
       17279 58,473.47         0.00
       17353 50,000.00         0.00

                              -0.05

* NOI and DSCR, if available and reportable under the terms
* of the trust agreement are based on information obtained
* from the related borrower, and no other party to the
* agreement shall be held liable for the  accuracy or
* methodology used to determine such figures.

(1)   Legend:

A.  P&I Adv -  in Grace Period
B.  P&I Adv -  < one month delinq

1.  P&I Adv -  delinquent 1 month
2.  P&I Adv -  delinquent 2 months

3.  P&I Adv -  delinquent 3+ months
4.  Mat. Balloon/Assumed  P&I

5. Prepaid in Full
6. Specially  Serviced

7. Foreclosure
8. Bankruptcy

9. REO
10. DPO
11. Modification


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99


            Beginning
Disclosure  Scheduled Interest     Maturity
Control #   Balance   Rate         Date


           0





























                      Specially Serviced Loan Detail
                      Specially
Disclosure  Property  Serviced
Control #   Type      Status Code (Comments
                                  0             0
                                  0             0
           0                      0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0
                                  0             0


(1)         Legend :
            1)  Request for waiver of Prepayment Penalty
            2)   Payment default
            3)   Request for Loan Modification or Workout
            4)  Loan with Borrower Bankruptcy
            5)  Loan in Process of Foreclosure
            6)  Loan now REO Property


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107

GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Date:            10/15/99
Payment Date:              10/15/99
Prior Payment:             09/15/99
Record Date:               09/30/99

Modified Loan Detail
Disclosure  ModificatiModification
Control #   Date      Description
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0
           0  01/00/00            0


ABN AMRO
LaSalle Bank N.A.

Administrator:
  Ann Kelly  (800) 246-5761
  135 S. LaSalle Street   Suite 1625
  Chicago, IL   60674-4107


GMAC Commercial Mortgage Securities, Inc.
GMAC Commercial Mortgage Corporation as Servicer
Mortgage Pass-Through Certificates
Series 1998-C1

ABN AMRO Acct: 677923203

Statement Da  10/15/99
Payment Date  10/15/99
Prior Paymen  09/15/99
Record Date:  09/30/99

Realized Loss Detail

                                                 Beginning
Dist.       DisclosureAppraisal    Appraisal     Scheduled
Date        Control # Date         Value         Balance
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
    01/00/00         0     01/00/00          0.00            0.00
Current Total                                0.00
Cumulative                                   0.00

                  Gross ProceedAggregate    Net          Net Proceeds
Dist.   Gross     as a % of    Liquidation  Liquidation  as a % of    Realized
Date    Proceeds  Sched PrincipExpenses *   Proceeds     Sched. BalancLoss
01/00/00      0.00                       0.00
01/00/00      0.00                       0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
01/00/00      0.00     0.00%          0.00            0.00        0.00%    0.00
Current Tota  0.00                    0.00            0.00                 0.00
Cumulative    0.00                    0.00            0.00                 0.00

* Aggregate liquidation expenses also include outstanding
* P&I advances and unpaid servicing fees, unpaid trustee
* fees, etc..
_



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