PRIME GROUP REALTY TRUST
10-K, 2000-03-24
REAL ESTATE INVESTMENT TRUSTS
Previous: LIBERTY MINT LTD, NT 10-K, 2000-03-24
Next: IMPERIAL CREDIT COMMERCIAL MORTGAGE INVESTMENT CORP, 8-K, 2000-03-24




<PAGE>


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                          ------------------------------

                                    FORM 10-K

                /X/ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                   FOR THE FISCAL YEAR ENDED DECEMBER 31, 1999

                                       or

              /_/ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

              FOR THE TRANSITION PERIOD FROM _________ TO _________

                         Commission File Number: 1-13589

                            PRIME GROUP REALTY TRUST
             (Exact name of Registrant as specified in its charter)

                        MARYLAND                               36-4173047
             (State or other jurisdiction of                 (I.R.S. Employer
             incorporation or organization)                Identification No.)
   77 WEST WACKER DRIVE, SUITE 3900, CHICAGO, ILLINOIS            60601
        (Address of principal executive offices)                (Zip Code)

                                 (312) 917-1300
              (Registrant's telephone number, including area code)

          Securities registered pursuant to Section 12(b) of the Act:
<TABLE>
<CAPTION>

             TITLE OF EACH CLASS                 NAME OF EACH EXCHANGE ON WHICH REGISTERED
             -------------------                 -----------------------------------------
  <S>                                                     <C>
    Common Shares of Beneficial Interest,                 New York Stock Exchange
          $0.01 par value per share
      Series B - Cumulative Redeemable                    New York Stock Exchange
  Preferred Shares of Beneficial Interest,
          $0.01 par value per share

</TABLE>

        Securities registered pursuant to Section 12(g) of the Act: None

         Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. YES  /X/    No ____

         Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained,
to the best of the Registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. / /

         The aggregate market value of the Registrant's common shares held by
non-affiliates was approximately $219,530,371 based on the closing price on the
New York Stock Exchange for such shares on March 16, 2000.

         The number of the Registrant's common shares outstanding was 15,271,678
as of March 16, 2000.

                       DOCUMENTS INCORPORATED BY REFERENCE

         Part III of this report incorporates information by reference from the
definitive Proxy Statement for the Registrant's Annual Meeting of Shareholders,
to be held on May 17, 2000.


================================================================================


<PAGE>

ITEM 1.  BUSINESS

BACKGROUND AND GENERAL

         We are a fully-integrated real estate investment company organized
under Maryland law, providing property management, leasing, marketing,
acquisition, development, redevelopment, construction, finance and other related
services. We have elected to be taxed as a Real Estate Investment Trust ("REIT")
for federal income tax purposes. As of December 31, 1999, we owned 28 office
properties (including 1701 Golf Road, on which we own a second mortgage note,
but for which we have consolidated the property's operations), 40 industrial
properties, one retail center and one parking facility. Our properties are
located primarily in the Chicago metropolitan area. In addition, we own a 50%
common interest in a joint venture which owns an office property located at 77
West Wacker Drive, Chicago, Illinois, and a mortgage on an office property
located at 180 N. LaSalle Street, Chicago, Illinois.

         We also own approximately 239.4 acres of land that we may develop. This
acreage includes two development sites which contain approximately 131,000
square feet located in the Chicago central business district, one of which is
held by a joint venture with a third party. We also have rights to acquire
approximately 202.6 acres of developable land, including rights to acquire a
site located in the Chicago central business district containing approximately
58,000 square feet. We believe that this land could be developed to have
approximately 4.6 million square feet of additional office space and over 7.5
million square feet of additional industrial space.

         We were formed on July 21, 1997 as a Maryland real estate investment
trust and on November 17, 1997, we sold 12,380,000 of our common shares at a
price of $20.00 per share in an underwritten offering and became a public
company. Our executive offices are located at 77 West Wacker Drive, Suite 3900,
Chicago, Illinois 60601, and our telephone number is (312) 917-1300.

         We are the managing general partner of, and currently hold 58.4% of the
common interests in, Prime Group Realty, L.P., ("Operating Partnership"). We
conduct substantially all of our business through the Operating Partnership,
except for certain leasing, corporate advisory, construction, painting,
architectural and third party property management services, which are conducted
through Prime Group Realty Services, Inc., a Maryland corporation, and its
affiliates (collectively the "Services Company").

TAX STATUS

         We have elected to be taxed as a REIT under Sections 856 through 860 of
the Internal Revenue Code of 1986, as amended. As a REIT, we will not be subject
to federal income tax at the corporate level on income we distribute to our
shareholders as long as we distribute at least 95% of our taxable income
(excluding any net capital gain) each year. Since our inception, we believe that
we have complied with the tax regulations to maintain our REIT status. If we
fail to qualify as a REIT in any taxable year, we will be subject to federal
income tax (including any applicable alternative minimum tax) on our taxable
income at regular corporate rates. Even if we qualify as a REIT, we may be
subject to certain state and local taxes on our income and property.

BUSINESS AND GROWTH STRATEGIES

         Our primary business strategy is to achieve our investment and growth
objectives by focusing on the operation, development and selective acquisition
of office and industrial real estate located in


                                       2
<PAGE>

the Chicago metropolitan area and, to a lesser extent, other midwestern markets.
To implement this strategy, we intend to continue to:

         -    own, develop, redevelop, acquire, lease, manage and operate Class
              A office buildings that have below market rents and, therefore,
              provide the opportunity to enhance returns as leases expire or
              are renewed;

         -    develop Class A office buildings in prime locations with
              significant leasing potential;

         -    selectively acquire distressed, under-performing and
              under-managed Class B office buildings in desirable locations and
              improve the income potential of such assets by raising them to a
              higher operating standard through value-added renovation
              programs, professional property management and aggressive
              leasing, retenanting and marketing efforts;

         -    selectively acquire and develop properties that underutilize
              their sites or that have excess land for future development;

         -    selectively acquire properties or portfolios of properties from
              tax-sensitive owners where the properties can be acquired on a
              tax-deferred basis using common units of limited partner
              interests in the Operating Partnership, as purchase
              consideration; and

         -    own, develop, redevelop, acquire, lease, manage and operate bulk
              warehouse/ distribution facilities and overhead
              crane/manufacturing facilities.

         Class A office buildings are centrally located, professionally managed
and maintained, attract high-quality tenants and command upper-tier rental rates
and are modern structures or have been modernized to compete with newer
buildings. Class B office buildings have good location, construction and tenancy
and are sometimes considered to be competitive with the lower spectrum of Class
A buildings.

         We believe that we can draw upon our extensive experience and long-term
presence in the Chicago metropolitan area to create a strategic advantage in
competing for future development and acquisition opportunities.

         As evidence of this, we recently signed a 618,000 square foot lease
with a major financial institution to serve as the anchor tenant to our Dearborn
Center development. This state of the art office building will be located in
downtown Chicago and will contain approximately 1.5 million square feet of
rentable square feet. Construction will commence upon obtaining financing, which
is anticipated in the second quarter of 2000.

         OPERATING STRATEGY. We will focus on enhancing our cash flow per share
         by:

         -    engaging in pro-active leasing programs and effective property
              management;

         -    managing operating expenses through the use of in-house
              management expertise;

         -    maintaining and developing long-term relationships with a diverse
              tenant group;

         -    attracting and retaining motivated employees by providing
              financial and other incentives;

         -    continuing to emphasize value-added capital improvements to
              enhance our properties' competitive advantages in their
              submarkets; and

         -    maximizing the cash flow of our properties.


                                       3
<PAGE>


         DEVELOPMENT STRATEGY. As opportunities arise and where market
conditions support a favorable risk-adjusted return on investment, we intend to
pursue opportunities for growth through the development of new office and
industrial properties and the renovation of distressed Class B buildings. We
believe that the strength and experience of our management in the development of
office and industrial properties will provide us with a competitive advantage in
evaluating and pursuing opportunities to develop additional properties. During
the next few years, we expect that most of our development activities will be
focused on Chicago central business district office and suburban office and
industrial properties in the Chicago metropolitan area.

         Based on ongoing marketing activities and discussions with prospective
tenants, we expect that over the next several years there will be significant
demand from several large tenants that are unable to find large blocks of
contiguous Class A office space in downtown Chicago which may lead to office
development opportunities. We believe that our significant land holdings and
land option rights will provide us with a distinct advantage in competing for
future development opportunities.

         The Services Company's corporate advisory activities with third parties
are expected to give us further access to future development opportunities for
properties we will build and lease.

         ACQUISITION STRATEGY. We plan to increase our cash flow per share by
acquiring selected additional office and industrial properties, including
properties that:

provide attractive initial yields and significant potential for growth in cash
flow from property operations;

are well-located, of high quality and competitive in their respective
submarkets;

are located in our existing submarkets and/or in other strategic submarkets
where the demand for office and industrial space exceeds available supply; and

have been under-managed or are otherwise capable of improved performance through
intensive management, marketing and leasing.

         We plan to concentrate our acquisition activities in the Chicago
metropolitan area and, to a lesser extent, in other midwestern markets. We
believe that attractive opportunities exist to acquire office and industrial
properties in these markets at prices below replacement cost. Each acquisition
opportunity will be reviewed to evaluate whether it meets one or more of the
following criteria:

potential for higher occupancy levels and/or rents as well as for lower tenant
turnover and/or operating expenses;

ability to generate returns in excess of our weighted average cost of capital,
taking into account the estimated costs associated with renovation and tenant
turnover (I.E., tenant improvements and leasing commissions); and

purchase prices at or below estimated replacement cost.

         We believe we have certain competitive advantages that enhance our
ability to identify and complete acquisitions on a timely and efficient basis,
including:

         -    our management's significant local market experience with, and
              knowledge of, properties, submarkets and potential tenants;

         -    our management's long-standing relationships with commercial real
              estate brokers and institutional and other owners of commercial
              real estate in the Chicago metropolitan area;


                                       4
<PAGE>

         -    our fully-integrated real estate operations, which allow us to
              quickly evaluate and respond to acquisition opportunities;

         -    our ability to access relatively low-cost financing through the
              capital markets; o our management's reputation as an experienced
              purchaser of office and industrial properties with the ability to
              execute transactions in an efficient and timely manner; and

         -    our ability to add a number of office and industrial properties
              to our portfolio without the need for a significant increase in
              general and administrative expenses, due to our expertise and
              depth of management.

         We also plan to make strategic purchases of land where opportunities
exist for current -or future development.

         FINANCING STRATEGY. Our financing policy has the following targets in
place as of December 31, 1999: (i) a minimum interest coverage ratio of at least
2.0, (ii) a minimum fixed coverage charge ratio of at least 1.60, (iii) a ratio
of debt-to-net asset value of no more than 50%, and (iv) unencumbered cash and
credit availability of at least $40.0 million, of which $10.0 million should be
cash on hand. The foregoing ratios and measures are calculated pursuant to
detailed definitions set by our Board of Trustees (our "Board") and, in some
instances, are adjusted over time pursuant to a schedule set by our Board.

         The above targets do not mean that we will operate within each of the
ratios at all times or that our Board will not approve actions which will cause
us to not be in compliance with this policy. Our financing policy may be altered
without the consent of our shareholders, and our organizational documents do not
limit the amount or type of indebtedness that we may incur.

         We intend to use one or more sources of capital for future acquisitions
and development activities. These capital sources may include undistributed cash
flow, borrowings under certain credit facilities, property specific non-recourse
debt, proceeds from the issuance of long-term, tax-exempt bonds and other debt
or equity securities, other bank and/or institutional borrowings or proceeds
from the sale or joint venture of mature assets.

         Given the current trading prices of our shares, we intend to sell
and/or joint venture mature assets and use the proceeds from these sales and/or
joint ventures to repay debt and repurchase our shares. Our Board of Trustees
has approved the repurchase of up to $250.0 million of our outstanding shares.
The shares will be repurchased from time to time in open market and
privately-negotiated purchases, subject to applicable securities laws. Share
repurchase decisions will be made by management based on market conditions and
other factors. We plan to raise up to $500.0 million from the sale of stabilized
and mature properties, and/or the sale of joint venture interests in these
properties. We intend to use approximately 50% of these proceeds to retire debt
and the remainder to repurchase our shares. The properties or interests we
currently intend to sell and or joint venture will represent approximately 30%
of the net asset value of our current office and industrial portfolio.


                                       5
<PAGE>



RECENT DEVELOPMENTS

During 1999, we acquired, placed in service or sold the following office and
industrial properties and parcels of land:

<TABLE>
<CAPTION>

                                                                                ACQUISITION
                                                                  NET        COST/DEVELOP-MENT    MONTH ACQUIRED/
                                                                RENTABLE           COST/             PLACED IN
                                                                SQ. FT./      SALES PRICE (IN       SERVICE/SOLD
                 PROPERTY                      LOCATION          ACRES         MILLIONS) (1)
 -------------------------------------------------------------------------------------------------------------------
<S>                                        <C>                  <C>                  <C>            <C>
 ACQUIRED:
 Office:
    33 West Monroe Street (2)              Chicago, IL            846,759            $101.3             January
    National City Center (3), (4)          Cleveland, OH          766,965             105.0             February
    800-810 Jorie Blvd (5)                 Oak Brook, IL          190,829              30.0              August
    IBM Plaza (4), (6)                     Chicago, IL          1,350,660             248.5             December
    Brush Hill Office Center (7)           Westmont, IL           109,865              12.9             December
 Industrial:
    901 Technology Way (4), (8)            Libertyville, IL        68,824               4.1             January
    300 Craig Place (9)                    Hillside, IL           163,070               8.6              July
    43-47 Hintz Road (10)                  Wheeling, IL           310,156               9.7            September
                                                            -----------------------------------
 Total Office and Industrial
    Properties Acquired                                         3,807,128            $520.1
                                                            ===================================
 Land:
    Carol Stream Land (8), (11)            Carol Stream, IL    40.5 Acres            $  5.4         April, December
    Aurora Land (12)                       Aurora, IL          21.0 Acres               0.9          July, November
    300 West Monroe Street and 25
     & 77 South Wacker Drive (13)          Chicago, IL          1.4 Acres              55.9              July
                                                            -----------------------------------
 Total Land Acquired                                           62.9 Acres            $ 62.2
                                                            ===================================
 DEVELOPMENTS PLACED IN SERVICE:
 Office:
   Pine Meadows Center (14)                Libertyville, IL       180,926            $ 23.6              October,
                                                                                                         December
 Industrial:
   320 Fullerton Avenue (15)               Carol Stream, IL       263,208              10.1              December
                                                            -----------------------------------
 Total developments placed in service                             444,134            $ 33.7
                                                            ===================================
 SOLD:
 Office:
   941-961 Weigel Drive (16)               Elmhurst, IL           123,077                                July
 Industrial:
   300 Craig Place (16)                    Hillside, IL           163,070                                July
   306-310 Era Drive (16)                  Northbrook, IL          36,495                                July
   515 Huehl Road/
     500 Lindberg Road (16)                Northbrook, IL         201,244                                July
   555 Huehl Road (16)                     Northbrook, IL          74,000                                July
   1301 Ridgeview Drive (16)               McHenry, IL            217,600                                July
   3818 Grandville/
     1200 Northwestern (16)                Gurnee, IL             345,232                                July
   801 Technology Way (16)                 Libertyville, IL        68,824                                July
   901 Technology Way (16)                 Libertyville, IL        68,824                                July
   1001 Technology Way (16)                Libertyville, IL       212,831                                July
                                                            -----------------------------------
                                                                1,511,197            $ 89.5
   455 Academy Drive (17)                  Northbrook, IL         105,444               4.5            December
                                                            -----------------------------------
 Total Office and Industrial
   Properties Sold                                              1,616,641            $ 94.0
                                                            ===================================

</TABLE>


                                       6
<PAGE>


<TABLE>
<CAPTION>

                                                                NET
                                                             RENTABLE
                                                             SQ. FT./         SALES PRICE
               PROPERTY                    LOCATION            ACRES          (IN MILLIONS)         MONTH SOLD
 -------------------------------------------------------------------------------------------------------------------
 <S>                                   <C>                      <C>             <C>                    <C>
 Land:
   180 Kehoe Blvd. (18)                Carol Stream, IL         7.5 Acres       $    1.0               July
                                                         =======================================
 Portion of an Office Property:
   122 S. Michigan (19)                Chicago, IL                161,710       $   15.0                April
                                                         =======================================
 50% of Common Interest:
   77 W. Wacker Drive(20)              Chicago, IL                944,556       $   88.0               September
                                                         =======================================

</TABLE>


(1)  Acquisition cost includes cash paid at closing plus prorations and accrued
     real estate taxes.

(2)  This acquisition was partially funded by the proceeds of a $65.0 million
     mortgage loan initially bearing interest at LIBOR plus 2.0% increasing to
     LIBOR plus 2.15% in February 2000, requiring monthly interest only
     payments, and maturing January 2002. On January 31, 1999 we entered into a
     three year interest rate collar agreement with a financial institution for
     an original notional amount of $65.0 million. The interest rate ceiling is
     based on a LIBOR index rate of 7.50% and the interest rate floor is based
     on a LIBOR index rate of 3.73%.

(3)  We partially funded the acquisition costs with $30.0 million in advances
     from our credit facilities and the assumption of two notes with principal
     amounts of $52.9 million and $8.7 million, with actual interest rates of
     8.50% and 7.55%, respectively. These interest rates were in excess of the
     market rate at the acquisition date, which we estimated to be 6.75%. As a
     result, we have recorded an additional $2.0 million of principal to reflect
     an imputed interest rate of 6.75% over the term of the notes.

(4)  These properties were acquired from minority interest unit holders of the
     Operating Partnership or their affiliates, and, in the case of National
     City Center and IBM Plaza, an affiliate of the employer of a Board of
     Trustees member and, in the case of 901 Technology Way, an affiliate of one
     of our officers.

(5)  This acquisition was funded by the proceeds of a $21.0 million mortgage
     loan bearing interest at LIBOR plus 2.0%, requiring monthly principal and
     interest payments, maturing August 2002 and a portion of the proceeds from
     the sale of the properties referred to in note 16 below, as this property
     was identified as a replacement property under the tax-deferred exchange
     trust.

(6)  This acquisition was funded by the proceeds of a $160.0 million mortgage
     loan bearing interest at LIBOR plus 1.7%, requiring monthly interest
     payments and annual scheduled principal payments, maturing December 2002
     and a portion of the proceeds from the sale of the properties referred to
     in note 20 below, as this property was identified as a replacement property
     under the tax-deferred exchange trust.

(7)  This acquisition was funded by the proceeds of an $8.2 million mortgage
     loan bearing interest at 8.76%, requiring monthly principal and interest
     payments, maturing January 2010 and a portion of the proceeds from the sale
     of the properties referred to in notes 17 and 20 below, as this property
     was identified as a replacement property under the tax-deferred exchange
     trust.

(8)  Approximately 7.5 acres of the Carol Stream Land (180 Kehoe Blvd.) was sold
     on July 8, 1999 and 901 Technology Way was sold on July 14, 1999. See
     descriptions of sold properties for information regarding disposition of
     these parcels.

(9)  This property was purchased from an affiliate of a member of our Board of
     Trustees who is also a minority interest unit holder of the Operating
     Partnership. We assumed $6.5 million of debt upon


                                       7
<PAGE>

     acquisition of the property and repaid the balance in full upon sale of the
     property (see note 16 below).

(10) This acquisition was funded by the proceeds of a $6.0 million mortgage loan
     bearing interest at LIBOR plus 2.25%, requiring monthly principal and
     interest payments, maturing September 2002 and a portion of the proceeds
     from the sale of the properties referred to in note 16 below, as this
     property was identified as a replacement property under the tax-deferred
     exchange trust.

(11) This property was acquired from an affiliate of a member of our Board of
     Trustees who is also a minority interest unit holder in the Operating
     Partnership, for a total of $5.3 million in common units and $0.1 million
     in cash. These acquisitions were consummated pursuant to the Operating
     Partnership's 1998 commitment (subsequently extended to 1999) and 1999
     commitment under land purchase obligations established our initial public
     offering.

(12) We have contracts that require us to purchase an additional 107.9 acres
     over a remaining two to four year period. Certain minimum installment
     payments are required; however, the timing of purchases is at our
     discretion. These purchases are a part of these contracts. The acquisition
     of 7.5 acres in November 1999 was funded by a $0.6 million mortgage loan.

(13) This property was acquired with two acquisition mortgage loans in the
     amounts of $4.0 million and $24.0 million and a portion of the proceeds
     from the sale of the properties referred to note 16 below. The $4.0 million
     loan is collateralized by the parcel located at 25 and 77 South Wacker
     Drive, matures on November 1, 2001, bears interest at (a) until the funding
     of a construction loan for the 300 West Monroe Street parcel, the Prime
     Rate plus 0.5%, and (b) thereafter at LIBOR plus 2.75% and has been
     guaranteed by the Operating Partnership. The $24.0 million loan is
     collateralized by the adjacent parcel located at 300 West Monroe Street,
     matures on May 1, 2000, bears interest at the Prime Rate plus 0.5% and has
     been guaranteed by the Operating Partnership. The 25 and 77 South Wacker
     Drive property also has been pledged as collateral for the $24.0 million
     loan. The 25 and 77 South Wacker Drive property had been identified as a
     replacement property under the tax-deferred exchange trust discussed in
     note 16 below.

(14) These properties, consisting of two one-story buildings and one three-story
     building, were placed in service during 1999. The developments were funded
     through construction loans totaling $10.1 million at December 31, 1999.

(15) This property was acquired from a Board member, who is also a minority
     interest unit holder in the Operating Partnership, for a total of $2.2
     million in common units and $0.1 million in cash. These acquisitions were
     consummated pursuant to the Operating Partnership's 1998 commitment
     (subsequently extended to 1999) and 1999 commitment under land purchase
     obligations in the Operating Partnership established at the Company's
     initial public offering.

(16) These properties were sold in a single transaction with a total sales price
     of $89.5 million, resulting in a gain of approximately $3.6 million. As
     part of the sale, we agreed to assume responsibility for leasing two of the
     properties for five years, once the existing tenants' leases expire in 2000
     and 2001. Our total lease obligation is reduced as existing tenants renew
     their leases or as new leases from third parties are executed for space in
     the properties. As a result of these commitments, the gain has been
     deferred and is included in other liabilities until the tenants either
     renew their leases or are replaced. The gain may be reduced by any
     obligations we may incur as a result of these commitments. In order to
     defer the taxable gain on this transaction, net sales proceeds of $26.7
     million were deposited at closing into a tax-deferred exchange trust for
     reinvestment in future property purchases. The tax-deferred exchange was
     completed with the acquisition of four replacement properties: 300 West
     Monroe and 35 and 77 South Wacker Drive on July 15, 1999, 800-810 Jorie
     Boulevard on August 12, 1999, 43-47 Hintz Road on September 30, 1999 and
     Enterprise Center II on January 10, 2000.



                                       8
<PAGE>


(17) In order to defer the taxable gain of $0.9 million on this transaction, net
     sales proceeds of $4.2 million were deposited at closing into a
     tax-deferred exchange trust for reinvestment in future property purchases.

(18) The Services Company, an unconsolidated affiliate, constructed an
     office/warehouse facility on this parcel and sold it to the purchaser
     concurrently with our sale of the land. This affiliate leased the land from
     us during the portion of the construction period in which we owned the
     land.

(19) On April 19, 1999, we sold approximately 161,710 net rentable square feet
     of our 122 South Michigan Avenue office building to National-Louis
     University (NLU) for a gross sales price of $14.95 million and net
     consideration, net of commission, closing costs and a $1.1 million capital
     improvement allowance of $12.1 million. As part of this sale, NLU has also
     acquired an undivided 31.56% interest in certain common areas of the
     property. We continue to own the remaining 350,659 net rentable square feet
     of the building and are responsible for the management of the entire
     property. The sale resulted in a gain of $3.8 million for the year ended
     December 31, 1999.

(20) On September 30, 1999, we transferred this property into a new joint
     venture and concurrently sold 50% of our common interest for $22.0 million
     and a $66.0 million preferred interest (providing a cumulative preferred
     return of 9.5% per annum) in this property. The remaining 50% common
     interest is being accounted for using the equity method of accounting.
     Prior to the closing of the transaction, the existing $170.0 million
     non-recourse first mortgage was refinanced with a new $170.0 million
     non-recourse first mortgage. The extraordinary loss on extinguishment of
     debt for the year ended December 31, 1999 includes the write-off of
     unamortized deferred financing fees of $0.8 million. The new mortgage loan
     bears interest at LIBOR plus 1.25%, requiring interest only payments from
     time to time and annual principal payments, maturing September 2004. The
     sale resulted in a gain of $48.3 million for the year ended December 31,
     1999 representing the net proceeds in excess of net book value at the date
     of the sale. As a result, the book basis of the remaining 50% common
     interest is $0 for financial reporting purposes at the date of the sale. In
     order to defer the taxable gain on this transaction, net proceeds of $84.9
     million were deposited into a tax-deferred exchange trust for reinvestment
     in future property purchases. On December 10, 1999 and December 13, 1999,
     respectively, we purchased Brush Hill Office Court located in Westmont,
     Illinois and IBM Plaza, an office building located in Chicago, Illinois as
     replacement properties. The Aurora land contracts require us to purchase an
     additional 107.9 acres over a two to four year period for additional
     consideration of $8.9 million. Certain minimum installment payments are
     required; however, the timing of purchases is at our discretion. During
     1999, we made five installment payments totaling $0.8 million.

     Concurrently with the closing of our initial public offering, we obtained a
secured revolving credit facility from a group of financial institutions. We
used the credit facility to fund property acquisitions and letters-of-credit
that provide credit enhancements on certain of our bonds payable. The credit
facility is also subject to various financial and other operating covenants. The
credit facility had a maximum commitment of $80.0 million and the interest rate
was LIBOR plus 150 basis points which was amended to LIBOR plus 225 basis points
as of January 1, 1999. On February 4, 1999, the credit facility was amended and
the commitment was reduced to $75.0 million with the interest rate remaining the
same. On October 22, 1999, the credit facility was further amended and the
commitment was reduced to $35.0 million with the interest rate remaining the
same.

     On January 1, 1998, we provided the Services Company a $5.0 million
line-of-credit, which accrues interest at LIBOR plus 3%, requires monthly
principal and interest payments from available cash flow, as defined, and
matures on December 31, 2000. The line is collateralized by the Services
Company's third party receivables and is subject to various covenants. As of
December 31, 1999, the


                                       9
<PAGE>

line-of-credit had $1.8 million outstanding.

     In January 1998, we obtained a $15.0 million revolving line-of-credit with
a financial institution. The line-of-credit is collateralized by an industrial
property located at 475 Superior Avenue in Munster, Indiana. Outstanding
balances under the line-of-credit bear interest at a rate equal to LIBOR plus
195 basis points. In January 1999, we exercised an option to extend the
line-of-credit for one year to January 2000. In February 2000, the
line-of-credit was subsequently reduced to $11.5 million through March 14, 2000,
reducing to $10 million thereafter. Generally, the covenants contained in the
line-of-credit are identical to the covenants contained in the above mentioned
line-of-credit. The line-of-credit and the previously mentioned $35.0 million
credit facility are collectively referred to as the "Credit Facilities."

     During 1999, we incurred the following new indebtedness:

<TABLE>
<CAPTION>

                                            Original Principal                                        Maturity
 Collateral (1),(2)                        Balance (In Millions)           Interest Rate                Date
 -------------------------------------------------------------------------------------------------------------------
 <S>                                            <C>                 <C>                               <C>
 33 West Monroe (3)                             $ 65.0              LIBOR + 2.0% increasing to         1/02
                                                                         2.15% in 2/00
 National City Center (4),(5)                     63.6                       6.75%                     4/01
 122 S. Michigan                                  14.0                    LIBOR + 3.0%                 5/04
 National City Center (6)                         10.0                    LIBOR + 4.5%                 1/00
 25 and 77 South Wacker (7)                        4.0                        (8)                     11/01
 300 West Monroe (7)                              24.0                 Prime Rate + 0.5%               5/00
 Pine Meadows Center (two one-story
    buildings) (7)                                (9)                   LIBOR + 2.25%                  2/01
 Pine Meadows Center (one three-story
    building) (7)                                (10)                   LIBOR + 2.50%                  2/01
 2000 USG Drive (7)                              (11)                   LIBOR + 2.25%                  2/01
 800-810 Jorie Blvd. (4)                          21.0              LIBOR + 2.0% but not less          8/02
                                                                          than 6.50%
 43-47 Hintz Rd. (4),(7)                           6.0                  LIBOR + 2.25%                  9/02
 77 W. Wacker Drive (12)                         170.0                  LIBOR + 1.25%                  9/04
 IBM Plaza                                       160.0                      (13)                      12/02
 Brush Hill Office Court (4)                       8.2                     8.76%                       1/10
 33 West Monroe                                   12.5                    11.0%                        6/00
 1600-1700 167th Street (4)                        2.8                     8.68%                      12/09
 320 Fullerton Avenue (7)                        (14)                   LIBOR + 2.25%                  5/01
 Line of Credit                                  (15)                   LIBOR + 1.95%                  2/00
 Aurora Land (16)                                  0.6                     8.0%                        6/00

</TABLE>

(1)  All of the loans are subject to various financial and other operating
     covenants and are collateralized by mortgages on the properties, unless
     otherwise indicated.

(2)  Interest is payable monthly, with principal due at maturity, unless
     otherwise indicated.

(3)  On January 31, 1999, we entered into an interest rate collar agreement for
     the period from January 31, 1999 through January 31, 2002 with a financial
     institution for an original notional amount of $65.0 million. Pursuant to
     the agreement, the interest rate ceiling under the agreement is based on a
     LIBOR index rate of 7.50% and the interest rate floor is based on a LIBOR
     index rate of 3.73%.

(4)  Principal and interest payable monthly through maturity.

(5)  Consists of two assumed notes with principal amounts of $52.9 million and
     $8.7 million, with actual interest rates of 8.50% and 7.55%, respectively.
     These interest rates were in excess of the market rate at the acquisition
     date, which we estimated to be 6.75%. As a result, we have recorded an
     additional $2.0 million of principal to reflect an imputed interest rate of
     6.75% over the term of the notes.

(6)  This loan is collateralized by a pledge of a portion of the ownership
     interests in the entity that owns the property. At our election, the
     interest rate is either (a) the Prime Rate plus 3.25% or (b) LIBOR


                                       10
<PAGE>

     plus 4.5%. A loan modification agreement extended the maturity date and the
     loan was repaid in February 2000. Other loan terms remained substantially
     unchanged.

(7)  The Operating Partnership has guaranteed these loans. The $24.0 million 300
     West Monroe loan has also been guaranteed by our entity which owns the the
     25 and 77 South Wacker Drive property. The loan is secured by a second
     mortgage on the 25 and 77 South Wacker Drive property. The Pine Meadows
     Center and 2000 USG Drive loans document contain cross-collateralization
     and cross-default clauses. The 43-47 Hintz Rd. loan guaranty is limited to
     $1.5 million.

(8)  After the funding of a construction loan related to the 300 West Monroe
     parcel, the interest rate will be based on an index rate of LIBOR plus
     2.75%.

(9)  A $8.7 million construction loan, of which $6.1 million has been disbursed
     as of December 31, 1999.

(10) A $9.4 million construction loan, of which $4.9 million has been disbursed
     as of December 31, 1999.

(11) A $6.3 million construction loan, of which $4.4 million has been disbursed
     as of December 31, 1999.

(12) Refinancing of a mortgage loan of equal amount which provides for annual
     amortization during the term. The loan has been transferred into an
     unconsolidated joint venture in which we have a 50% common ownership
     interest.

(13) On December 10, 1999, we entered into an interest rate swap agreement based
     on a LIBOR index rate of 6.3% which effectively fixed our interest rate
     with respect to the variable rate mortgage note payable secured by the IBM
     Plaza property at a rate of 8.00%. This agreement has an original notional
     amount of $160.0 million that decreases to $158.4 million on December 10,
     2000 and to $155.2 million on December 10, 2001 coincident with principal
     payments on the mortgage note payable secured by IBM Plaza property. The
     swap agreement had a purchase price of $0.6 million and terminates on
     December 10, 2002. No amounts were paid or received under the terms of the
     swap agreement during 1999.

(14) A $8.1 million construction loan of which $5.1 million has been disbursed
     as of December 31, 1999.

(15) A $12.0 million revolving line of credit, all of which was outstanding as
     of December 31, 1999.

(16) Interest and principal are due at maturity.


                                       11
<PAGE>


         In January 2000, the Company acquired the following 62,559 square foot
office property and 7.5 acres of vacant land:

<TABLE>
<CAPTION>

                                                      ACQUISITION      MORTGAGE
                                                         COSTS           DEBT
            PROPERTY                   LOCATION      (IN MILLIONS)   (IN MILLIONS)
- -------------------------------------------------------------------------------------
<S>                               <C>                     <C>              <C>
Office:
   Enterprise Center II           Westchester, IL         $8.8             $5.45
                                                     ================================
Land:
    Libertyville Office II        Libertyville, IL        $1.2              -
                                                     ================================

</TABLE>

         On January 8, 1999, the Company filed our initial shelf registration
statement on Form S-3 with the Securities and Exchange Commission (which was
declared effective on June 8, 1999) to register up to $500.0 million of our
equity and debt securities for future sale.

         On February 8, 1999, the Company signed a contract with a buyer
pursuant to which it will construct and sell to the buyer an approximately
1,018-space parking garage, including approximately 4,000 square feet of retail
space, on approximately 22,000 square feet of a 61,302 square foot parcel of
land that the Company owns in the Chicago central business district (see Note 13
to the table of properties acquired, placed in service and sold in 1999
regarding acquisition of this parcel). The contract provides for a sales price
of the completed garage of approximately $36.0 million, plus the value of any of
the retail space leased by the Company at the time of sale up to a maximum of
$1.75 million. In addition, the Company is entitled to receive an additional
$1.0 million from the buyer if, within 15 years after the sale of the parking
garage to the buyer, it substantially completes construction of an office
building on the land containing at least 800,000 square feet of office space,
which is occupied by at least one tenant who is not affiliated with us. Pursuant
to a letter agreement dated December 3, 1999, the contingency period for
obtaining the required city approvals for the construction of the parking garage
was extended from December 31, 1999 until April 30, 2000. The parties are
currently discussing the possibility of further extending such contingency if
necessary, as well as certain other potential modifications to the terms of the
transaction.

         In March 1999, the option period for a parcel adjacent to one of our
development property sites lapsed. We recorded the related non-refundable option
price of $0.6 million as a loss on land development option in our consolidated
statement of operations for the year ended December 31, 1999.

         On March 1, 1999, we terminated a $160.0 million treasury lock
agreement due to changes in terms and timing of the purchase of an office
building as a result of an amended purchase agreement. This resulted in
approximately $0.6 million on deposit related to the treasury lock agreement
being forfeited at the time of termination. On May 11, 1999, we terminated a
$170.0 million treasury lock agreement due to changes in timing of a planned
future securitization of a currently outstanding $170.0 million loan related to
the 77 West Wacker Drive building. The termination resulted in a net settlement
and gain upon termination of $1.2 million. The net gain of $0.6 million from the
two terminations has been included as a net gain in other income in the
statement of operations for the year ended December 31, 1999. During the year
ended December 31, 1999, we received net cash settlements of approximately $15.2
million related to both treasury lock agreements.


                                       12
<PAGE>

         On April 13, 1999, we modified the terms of our Series A preferred
shares. Under the original terms, the holders of the Series A preferred shares
had certain conversion rights if for two consecutive quarters (1) the ratio of
our debt plus nonconvertible preferred shares divided by our total market
capitalization exceeded 65% or (2) our fixed charges coverage ratio fell below
1.4. The new agreement eliminates the debt-to-market capitalization covenant. In
exchange, the holders of the Series A preferred shares were granted the future
right to cause the redemption of their shares at a price of $20.00 per share
upon 120 days' prior written notice, which redemption may occur during the
period beginning January 15, 2002 and ending January 15, 2004. The Series A
preferred shares will continue to pay an annual dividend of $1.50 per share and
will continue to be convertible into common shares on a one for one basis. We
made a $0.4 million one-time payment as part of this transaction, which will be
amortized, using the straight-line method, through January 15, 2002 as a
preferred dividend. All 2,000,000 outstanding shares of our Series A preferred
shares have been reclassified to redeemable equity at their aggregate redemption
price of $40.0 million, net of the unamortized transaction fee, in the
consolidated balance sheet.

         Under the provisions of one of the credit facilities, we are obligated
to maintain interest rate contracts on a portion of our variable rate
indebtedness. On January 31, 1999, we entered into an interest rate collar
agreement for the period from January 31, 1999 through January 31, 2002 with a
financial institution for an original notional amount of $65.0 million. The
interest rate ceiling under the agreement is based on a LIBOR index rate of
7.50% and the interest rate floor is based on a LIBOR index rate of 3.73%. We
entered into an interest rate cap agreement in July, 1999 with a financial
institution for an original notional amount of $150.0 million at 7.0% during the
period from July 1 through October 1, 1999. On November 1, 1999, we entered into
an interest rate collar agreement for the period from November 1, 1999 through
September 30, 2002 with a financial institution for an original notional amount
of $170.0 million. The interest rate ceiling under the agreement is based on a
LIBOR index rate of 7.75% and the interest rate floor is based on a LIBOR index
rate of 5.62%. On November 22, 1999, we transferred the $170.0 million interest
rate collar agreement to an unconsolidated investment partnership. However, we
have provided a guaranty to the counterparty related to this agreement. On
December 10, 1999, we entered into an interest rate swap agreement for a
purchase price of $591 for the period from December 10, 1999 through December
10, 2002 for an original notional amount of $160 million that decreases to
$158.4 million on December 10, 2000 and to $155.2 million on December 10, 2001.
The interest rate swap under the agreement is based on a LIBOR index rate of
6.3% and effectively fixed the interest rate on $160.0 million of variable rate
mortgage indebtedness at a rate of 8.0%. On March 20, 2000, we entered into an
interest rate cap agreement for the period from March 20, 2000 through November
17, 2000 for a notional amount of $70.0 million. The interest rate under the
agreement is dapped at a LIBOR index rate of 8.0%. These agreements satisfy our
obligation to maintain interest rate contracts under the provisions of one of
the credit facilities.

         In December 1999, we granted a permanent easement to space within the
IBM Plaza property to a utility company for a fee of $2.0 million, which has
been included in other income in 1999. We are under no obligation to perform any
services for the utility company to earn the fee, and we believe that the
easement does not decrease the value of the property.

SEGMENT REPORTING DATA

         See Note 15 to our consolidated financial statements for a discussion
on our operating segment data for the years ended December 31, 1999 and 1998 and
for the period from November 17, 1997 through December 31, 1997.



                                       13
<PAGE>


COMPETITION

         We compete with other owners and developers; some of whom may have
greater resources and more experience than we. In addition, the number of
competitive properties in any particular market or submarket in which our
properties are located could have a material adverse effect on both our ability
to lease space at our properties or any newly-acquired property and on the rents
charged at our properties. We believe that we are one of a limited number of
publicly-traded real estate companies primarily focusing on the office and
industrial market in the Chicago metropolitan area.

SERVICES COMPANY

         The Services Company was formed in March 1997 under the laws of the
state of Maryland. The Operating Partnership owns 100.0% of the nonvoting
preferred stock of the Services Company, representing 95.0% of its economic
value and also has a $4.8 million promissory note issued from Services Company
in connection with its formation. We have also provided a $5.0 million
line-of-credit to the Services Company. The ownership structure permits us to
share in the Services Company's income and also maintain our status as a REIT
for federal income tax purposes. We receive substantially all of the economic
benefit of the businesses carried on by the Services Company because we have the
right to receive dividends through the operating partnership's investment in the
preferred stock. However, we do not elect the Services Company's officers or
directors and, consequently, do not have the ability to control the operations
of the Services Company or require the declaration of dividends.

         The Services Company provides certain corporate advisory, management,
leasing, tenant improvement construction, painting and tenant representation
services to buildings owned by others. The Services Company's leasing division
provides leasing services to certain of our properties and other property owners
for fees. The Services Company's tenant improvements division provides
construction management services for tenant improvements, renovations and other
construction related services to the properties owned, acquired, developed or
managed by us.

GOVERNMENT REGULATION

         ENVIRONMENTAL MATTERS. All of our properties were subject to Phase I or
similar environmental assessments by independent environmental consultants.
Phase I assessments are intended to discover information regarding, and to
evaluate the environmental condition of, the surveyed property and surrounding
properties. Phase I assessments generally include an historical review, a public
records review, an investigation of the surveyed site and surrounding
properties, and the preparation and issuance of a written report, but do not
include soil sampling or subsurface investigations.

         We are aware of environmental contamination at certain of our older
industrial properties contributed to us as an equity contribution by The Prime
Group, Inc. ("PGI"). These properties are in remediation programs sponsored by
the appropriate state environmental agencies. PGI has contractually agreed to
retain liability, and indemnify us, for the costs of environmental remediation
with regard to these industrial properties, which environmental consultants have
estimated will cost, in the aggregate, up to $3.2 million. Based on such
estimates, certain properties PGI contributed recorded provisions for
environmental remediation costs totaling $3.2 million in 1997 prior to their
contribution. During 1997, PGI initiated lawsuits against a former owner (who is
also a former tenant) of one of the properties and an environmental consultant
to cover the cost of the remedial


                                       14
<PAGE>

GOVERNMENT REGULATION (CONTINUED)

action plans. On February 20, 1998, PGI reached an agreement with the former
owner and received a $1.8 million settlement payment, in addition to $0.5
million previously paid as a reimbursement for costs. In 1998, PGI sued a
current tenant of one of the properties to recover the cost of certain remedial
action plans. During 1999, we incurred $0.3 million of costs related to the
above remediation and for which we are due reimbursement from PGI.

         We are also aware of contamination at 455 Academy Drive in Northbrook,
Illinois. The tenant of the property during the time we owned it, NSI
Enterprises, Inc.("NSI"), provided us with an indemnity for all of the costs of
environmental remediation regarding the property they caused either knowingly or
unknowingly. On December 23, 1999, 455 Academy Drive was sold to NSI and NSI
agreed to clean up the contamination and obtain a no further action letter
pursuant to the Illinois Environmental Remediation Program. In addition, we are
aware of contamination at 1301 E. Tower Road in Schaumburg, Illinois. The
property has been submitted into a remediation program sponsored by the Illinois
Environmental Protection Agency and we are in the process of quantifying the
cost of necessary remedial actions. In connection with 1301 E. Tower Road, the
previous owner and other third parties have placed approximately $0.8 million in
escrow to fund the clean-up of the property. We currently anticipate that this
escrow will be sufficient to fund the necessary remedial action for this
property, although the previous owner and other third parties will not be
responsible for any costs in excess of the amount placed in escrow.

         We believe that our other properties are in compliance in all material
respects with all federal, state and local laws, ordinances and regulations
regarding hazardous or toxic substances. We have not been notified by any
governmental authority, and are not otherwise aware, of any material
noncompliance, liability or claim relating to hazardous or toxic substances in
connection with any of our other properties. None of our environmental
assessments of the properties have revealed any environmental liability that,
after giving effect to the contractual indemnities and escrows described above,
we believe would have a material adverse effect on our financial condition or
results of operations taken as a whole, nor are we aware of any such material
environmental liability. Nonetheless, it is possible that our assessments do not
reveal all environmental liabilities or that there are material environmental
liabilities of which we are unaware. Moreover, there can be no assurance that
(i) future laws, ordinances or regulations will not impose any material
environmental liability or (ii) the current environmental condition of our
properties will not be affected by tenants, by the condition of land or
operations in the vicinity of our properties (such as the presence of
underground storage tanks) or by third parties unrelated to us. If compliance
with the various laws and regulations, now existing or hereafter adopted,
exceeds our budgets for such items, our ability to make expected distributions
to shareholders could be adversely affected.

         COSTS OF COMPLIANCE WITH AMERICANS WITH DISABILITIES ACT. Under the
ADA, all public accommodations and commercial facilities are required to meet
certain federal requirements related to access and use by disabled persons.
These requirements became effective in 1992. Compliance with the ADA
requirements could require removal of access barriers, and noncompliance could
result in the imposition of fines by the federal government or an award of
damages to private litigants. We believe that our properties are substantially
in compliance with these requirements; however, we may incur additional costs to
comply with the ADA. Although we believe that such costs will not have a
material adverse effect on our financial position, if required changes involve a
greater amount of expenditures than we currently anticipate, our ability to make
expected distributions to shareholders could be adversely affected.


                                       15
<PAGE>



GOVERNMENT REGULATION (CONTINUED)

         OTHER REGULATIONS. Our properties are also subject to various federal,
state and local regulatory requirements, such as state and local fire and life
safety requirements. Failure to comply with these requirements could result in
the imposition of fines by governmental authorities or awards of damages to
private litigants. We believe that our properties are currently in material
compliance with all such regulatory requirements. However, there can be no
assurance that these requirements will not be changed or that new requirements
will not be imposed which would require us to make significant unanticipated
expenditures and could have an adverse effect on our Funds from Operations and
expected distributions.

INSURANCE

         We believe that our properties are covered by adequate comprehensive
liability, rental loss, and all-risk insurance, provided by reputable companies,
with commercially reasonable deductibles, limits and policy specifications
customarily carried for similar properties. There are, however, certain types of
losses which may be either uninsurable or not economically insurable, such as
losses due to floods, riots or acts of war. Should an uninsured loss occur, we
could lose both our invested capital in, and anticipated profits from, the
property.

EMPLOYEES

         As of December 31, 1999, we had approximately 216 full-time employees.
We believe that our relations with our employees are satisfactory.


                                       16
<PAGE>



ITEM 2.  PROPERTIES

GENERAL

         As of December 31, 1999, we owned 28 office properties (including 1701
Golf Road, on which we own a second mortgage note, but for which we have
consolidated the property's operations), 40 industrial properties, one retail
center and one parking facility. Our properties are located primarily in the
Chicago metropolitan area. In addition, we own a 50% common interest in a joint
venture which owns an office property located at 77 West Wacker Drive and a
mortgage on an office property located at 180 N. LaSalle Street, both in the
Chicago central business district. In terms of net rentable square feet,
approximately 83.3% of our office properties and 85.8% of our industrial
properties are located in the Chicago metropolitan area in prime business
locations within established business communities. The properties located in the
Chicago metropolitan area accounted for approximately 92.3% of our rental
revenue and 94.4% of our tenant reimbursements revenue for the year ended
December 31, 1999.

         Our management team has developed or redeveloped a significant number
of office properties, such as the 77 West Wacker Drive building in Chicago,
Illinois, and industrial properties, such as the 320 Fullerton Avenue building
in Carol Stream, Illinois. In the course of such development and redevelopment,
we have acquired experience across a broad range of development and
redevelopment projects. We believe our properties are well maintained and, based
on recent engineering reports, do not require significant capital improvements.

         We own approximately 239.4 acres of land that we may develop. This
acreage includes two development sites which contain approximately 131,000
square feet located in the Chicago central business district, one of which
comprises 67,000 square feet, and is held by a joint venture with a third party.
We also have rights to acquire approximately 202.6 acres of developable land,
including rights to acquire a site located in the Chicago central business
district containing approximately 58,000 square feet. We believe that this land
could be developed to have approximately 4.6 million square feet of additional
office space and over 7.5 million square feet of additional industrial space.
Included in the 202.6 acres are 48.9 acres to be acquired from affiliates of a
member of our Board of Trustees for a total purchase price of $6.0 million.

         Our office properties are leased to tenants either (i) on a net basis
with tenants obligated to pay their proportionate share of real estate taxes,
insurance, utility and operating expenses or (ii) on a gross basis, with the
landlord responsible for the payment of these expenses up to the amount incurred
during the tenants' first year of occupancy ("Base Year") or a negotiated amount
approximating the tenants' pro rata share of these expenses ("Expense Stop").
The tenants pay their pro rata share of increases in expenses above the Base
Year or Expense Stop. Most of the leases for our industrial properties are
written on either a (i) net basis, with tenants paying their proportionate share
of real estate taxes, insurance, utility and other operating expenses as
additional rent or (ii) triple net lease basis with the tenants paying all of
the real estate taxes, insurance, utility and other operating expenses for the
property.


                                       17
<PAGE>



PROPERTIES

         The following table sets forth certain information relating to each of
our properties as of December 31, 1999, unless indicated otherwise. Through the
Operating Partnership and other subsidiaries, we own a 100% interest in all of
the office and the industrial properties, except for 77 West Wacker Drive (we
own a 50% common ownership interest in the joint venture that owns the
property), 1701 Golf Road (we own the second mortgage note on this property) and
180 N. LaSalle Street (we own the first mortgage note on this property).


<TABLE>
<CAPTION>

                                                                                                NET         PERCENTAGE
                                                                         YEAR BUILT/         RENTABLE      LEASED AS OF
PROPERTY                                      LOCATION                   RENOVATED          SQUARE FEET    12/31/99(%)
- --------                                      --------                   ---------          -----------    -----------
<S>                                           <C>                        <C>                   <C>              <C>
OFFICE PROPERTIES:
330 North Wabash Avenue (IBM Plaza)           Chicago, IL                1971                  1,350,660        91.9
1701 Golf Road (Continental Towers) (1)       Rolling Meadows, IL        1977/1979/1981          928,766        97.6
33 West Monroe Street                         Chicago, IL                1980                    846,759        99.8
208 South LaSalle Street                                                 1914/1956/
                                              Chicago, IL                1982/1991               835,229        98.5
1900 East Ninth Street (National City
      Center)                                 Cleveland, OH              1980                    766,965        98.4
122 South Michigan Avenue                     Chicago, IL                1910                    350,659        86.0
33 North Dearborn Street                      Chicago, IL                1967/1986               302,818        94.7
201 4th Avenue North (Suntrust Bldg.)         Nashville, TN              1968/1985               250,566        91.3
3800 and 3850 North Wilke Road and
  3930 Ventura Drive(Commerce Point)          Arlington Heights, IL      1987/1989               236,642        97.1
1700 East Golf Road (Two Century Centre)      Schaumburg, IL             1989                    217,960        71.2
2000 York Road (2000 York Brook)              Oak Brook, IL              1960/1986               200,045        99.9
800-810 Jorie Boulevard                       Oak Brook, IL              1961/1992               190,829        99.7
850, 860 and 1000 Technology Way (Pine
  Meadows Corporate Center) (2)               Libertyville, IL           1999                    180,926       100.0
4343 Commerce Court (The Olympian Office
  Center)                                     Lisle, IL                  1989                    167,756        93.6
6400 Shafer Court                             Rosemont, IL               1980/1990               164,958        99.4
2205-2255 Enterprise Drive (Enterprise
  Office Center)                              Westchester, IL            1987                    129,574        99.0
1990 Algonquin Road/2000-2060 Algonquin
   Road (Salt Creek Office Center)(3)         Schaumburg, IL             1979/1986               125,938        95.1
740-770 Pasquinelli Drive (Brush Hill
   Office Center)                             Westmont, IL               1986                    109,865        95.6
1699 E. Woodfield Road (Citibank Office
   Plaza)                                     Schaumburg, IL             1979                    105,602       100.0
2675 N. Mayfair (Wauwatosa Bldg.)             Wauwatosa, WI              1979                    104,031        89.6
620 Market Street (Professional Plaza)        Knoxville, TN              1988                     93,711        84.5
625 Gay Street (Centre Square II)             Knoxville, TN              1988                     91,426        85.2
1600-1700 167th Street (Narco River
   Business Center)                           Calumet City, IL           1981                     65,394        86.7
280 Shuman Blvd. (Atrium)                     Naperville, IL             1979                     65,273       100.0
2100 Swift Drive                              Oak Brook, IL              1985/1991                58,000       100.0
1301 E. Tower Road (Narco Tower)              Schaumburg, IL             1992                     50,400       100.0
4823 Old Kingston Pike (Weston Bldg.)         Knoxville, TN              1988                     34,638       100.0
4100 West Madison Street                      Hillside, IL               1978                     24,551        43.5
                                                                                          --------------------------------
OFFICE PROPERTIES SUBTOTAL                                                                     8,049,941        95.0%
                                                                                          --------------------------------

</TABLE>


                                       18
<PAGE>


<TABLE>
<CAPTION>

                                                                                            NET          PERCENTAGE
                                                                        YEAR BUILT/      RENTABLE       LEASED AS OF
 PROPERTY                                      LOCATION                 RENOVATED       SQUARE FEET     12/31/99(%)
 --------                                      --------                 ---------       -----------     -----------
<S>                                           <C>                       <C>             <C>                 <C>
INDUSTRIAL PROPERTIES:
WAREHOUSE/DISTRIBUTION FACILITIES:
   475 Superior Avenue                        Munster, IN               1989               450,000          100.0
   43-47 Hintz Road                           Wheeling, IL              1961/1990          310,156          100.0
   2160 McGaw Road                            Obetz, OH                 1974               310,100          100.0
   425 E. Algonquin Road                      Arlington Heights, IL     1978               304,506          100.0
   320 Fullerton Avenue                       Carol Stream, IL          1999               263,208           47.4
   11045 Gage Avenue                          Franklin Park, IL         1970/1992          136,600          100.0
   4849 Groveport Road                        Obetz, OH                 1968               132,100          100.0
   4248, 4250 and 4300 Madison Street         Hillside, IL              1980               127,129          100.0
   1051 N. Kirk Road                          Batavia, IL               1990               120,004          100.0
   4211 Madison Street                        Hillside, IL              1977/1992           90,344          100.0
   2400 McGaw Road                            Obetz, OH                 1972                86,400          100.0
   5160 Blazer Memorial Parkway (4)           Dublin, OH                1983                85,962           74.4
   4160-4190 W. Madison Street                Hillside, IL              1974/1992           79,532          100.0
    342-346 Carol Lane                        Elmhurst, IL              1989                67,935          100.0
    200 E. Fullerton Avenue                   Carol Stream, IL          1968/1995           66,254          100.0
    4411 Marketing Place                      Columbus, OH              1984                65,804          100.0
    370 Carol Lane                            Elmhurst, IL              1977/1994           60,290          100.0
    600 London Road                           Delaware, OH              1981                52,441          100.0
    550 Kehoe Blvd                            Carol Stream, IL          1997                44,575          100.0
    388 Carol Lane                            Elmhurst, IL              1979                40,920          100.0
    343 Carol Lane                            Elmhurst, IL              1989                30,084          100.0
    350 Randy Road                            Carol Stream, IL          1974                25,200          100.0
    11039 Gage Avenue                         Franklin Park, IL         1965/1993           21,935          100.0
    1401 S. Jefferson Street                  Chicago, IL               1965/1985           17,265          100.0
 OVERHEAD CRANE/MANUFACTURING FACILITIES:

    Chicago Enterprise Center                 Chicago, IL               1916/1991-1996

      13535-A S. Torrence Avenue                                                           384,806           37.9
      13535-B S. Torrence Avenue                                                           239,752             -
      13535-C S. Torrence Avenue                                                            99,333          100.0
      13535-D S. Torrence Avenue                                                            77,325          100.0
      13535-E S. Torrence Avenue                                                            57,453          100.0
      13535-F S. Torrence Avenue                                                            44,800          100.0
      13535-G S. Torrence Avenue                                                            54,743          100.0
      13535-H S. Torrence Avenue                                                            73,612           95.8
    East Chicago Enterprise Center            East Chicago, IN          1917/1991-1997

      Building 2 (4407 Railroad Avenue)                                                    169,435           17.1
      Building 3 (4407 Railroad Avenue)                                                    291,550          100.0
      Building 4 (4407 Railroad Avenue)                                                     87,483           98.1
      4440 Railroad Avenue (5)                                                              40,000          100.0
      4635 Railroad Avenue                                                                  14,070             -
    Hammond Enterprise Center                 Hammond, IN               1920-1952

      4507 Columbia Avenue                                                                 256,595          100.0
      4527 Columbia Avenue (6)                                                              16,701           58.1
      4531 Columbia Avenue                                                                 250,266           99.2
                                                                                      --------------------------------
    INDUSTRIAL PROPERTIES SUBTOTAL                                                       5,146,668           84.3%
                                                                                      ================================
    PORTFOLIO TOTAL                                                                     13,196,609           90.9%
                                                                                      ================================

</TABLE>

                                       19
<PAGE>


<TABLE>
<CAPTION>

                                                                                              NET           PERCENTAGE
                                                                       YEAR BUILT/          RENTABLE       LEASED AS OF
PROPERTY                                      LOCATION                 RENOVATED          SQUARE FEET      12/31/99(%)
- --------                                      --------                 ---------          -----------      -----------
<S>                                           <C>                       <C>                 <C>               <C>
 MORTGAGE NOTE RECEIVABLE:
    180 N. LaSalle Street (7)                 Chicago, IL               1982/1999           769,384           57.5
 JOINT VENTURE INTEREST:
    77 West Wacker Drive (8)                  Chicago, IL               1992                944,556           99.8
 OTHER PROPERTIES:
    398 Unit Parking Facility                 Knoxville, TN             1981
    371-385 N. Gary Avenue (9)                Carol Stream, IL          1978                 11,276           78.3

</TABLE>

- ----------
     (1)  We hold a mortgage note receivable on the property and have
          consolidated the underlying property operations based upon receiving
          substantially all of the economic benefits of the property's
          operations.

     (2)  This property complex is comprised of two single-story buildings and a
          three-story building, but is treated as one office property.

     (3)  This property complex is comprised of 1990 Algonquin Road (a two-story
          office building) and 2000-2060 Algonquin Road (seven single-story
          office buildings), but is treated as one office property.

     (4)  This property is a mixed-use industrial/office property that has been
          classified as an industrial property.

     (5)  This property is an office building adjacent to the East Chicago
          Enterprise Center.

     (6)  This property is an office building within the Hammond Enterprise
          Center.

     (7)  We hold a mortgage note receivable on this office property. The
          operating results of this property have not been consolidated.

     (8)  On September 30, 1999, we sold 50% of our common ownership interest in
          77 West Wacker Drive to a third party for a gain of approximately
          $48.3 million. We contributed our remaining 50% common ownership
          interest to a new joint venture and are reflecting our ownership in
          the property using the equity method.

     (9)  This is a retail center.

ITEM 3. LEGAL PROCEEDINGS

     Neither we nor any of our properties are presently subject to any material
litigation nor, to our knowledge, is any material litigation threatened against
us, other than routine litigation arising in the ordinary course of business,
some of which is expected to be covered by liability insurance and all of which
collectively is not expected to have a material adverse effect on our
consolidated financial statements. Although subsequently settled in February
1999, we were subject to the litigation discussed below during early 1999.

     On July 22, 1998, we entered into a purchase agreement, with an affiliate
of an investor in the operating partnership, to acquire two office buildings,
IBM Plaza (a 1,354,354 square foot office building located in the Chicago
central business district) and National City Center (a 766,965 square foot
office building located in Cleveland, Ohio) for an aggregate purchase price of
approximately $357.0 million. On September 15, 1998, we terminated the purchase
agreement in accordance with the terms of the agreement due to the failure of a
material condition precedent to the closing of these acquisitions. On September
21, 1998, the sellers notified us in writing that they believed they were
entitled to the $20.0 million earnest money provided for by the agreement and
instructed the earnest


                                       20
<PAGE>

money escrow agent to draw the full amount under two earnest money
letters-of-credit we provided under one of the Credit Facilities. The sellers
also filed a compliant against us in with the Supreme Court of New York, New
York County alleging that we breached the contract. On October 30, 1998, we
filed our answer to the compliant and denied all material allegations of the
compliant. We also filed a counterclaim against the sellers alleging that the
sellers breached the contract and sought the return of the above mentioned
earnest money and other damages.

     On February 5, 1999, we entered into an amended option agreement with the
sellers of IBM Plaza and an amended purchase agreement with the sellers of
National City Center, which had the following terms:

     -    both the original lawsuit filed by the sellers and our counterclaim
          were dismissed;

     -    we purchased National City Center on February 5, 1999 for a contract
          price of $100.0 million; and

     -    the $20.0 million earnest money escrow described above was released
          and credited to the purchase of National City Center and an $8.0
          million nonrefundable payment for the option to purchase IBM Plaza
          which was subsequently purchased for $238.0 million (including the
          $8.0 million deposit) in December, 1999.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITYHOLDERS

     No matters were submitted to vote of security holders during the fourth
quarter of 1999.


                                       21
<PAGE>



PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

     Our common shares began trading on the New York Stock Exchange ("NYSE") on
November 12, 1997, under the symbol "PGE". On March 16, 2000, the reported
closing sale price on the NYSE was $14 3/8, and there were 15,271,678 common
shares outstanding held by approximately 3,000 holders of record. The following
table sets forth the high and low closing sales prices per common share reported
on the NYSE and the distributions we paid for the years ended December 31, 1999
and 1998


<TABLE>
<CAPTION>

                                                                                    CASH
                                                                                DISTRIBUTIONS
                                                 HIGH              LOW            PAID (1)
     <S>                                      <C>              <C>              <C>
     FISCAL YEAR 1999
     First quarter                            $   15 11/16     $   12 7/8       $   0.3375
     Second quarter                               17 3/16          13 3/16          0.3375
     Third quarter                                17 11/16         15               0.3375
     Fourth quarter                               15 7/16          13                   (2)

     FISCAL YEAR 1998
     First quarter                                20 7/8           19 5/8           0.3375
     Second quarter                               21               17 1/8           0.3375
     Third quarter                                19 15/16         13 1/16          0.3375
     Fourth quarter                               16 5/8           13 9/16              (3)

</TABLE>


(1)  All distributions are per common share and common unit.

(2)  On December 8, 1999, our Board of Trustees declared a dividend of $0.3375
     per common share and common unit for the fourth quarter of 1999 to holders
     of record on December 31, 1999. These dividends were paid January 20, 2000.

(3)  On December 9, 1998, our Board of Trustees declared a dividend of $0.3375
     per common share and common unit for the fourth quarter of 1998 to holders
     of record on December 31, 1998. These dividends were paid January 20, 1999.

     We currently make quarterly distributions to holders of our common shares
and Operating Partnership common units. Distributions on the common shares and
common units are not permitted unless all current and any accumulated
distributions on our Series A - Cumulative Convertible Preferred Shares, our
Series B - Cumulative Redeemable Preferred Shares and the related preferred
units in the operating partnership have been paid in full or set aside for
payment. Future distributions by us will be at the direction of our Board of
Trustees. These distributions will depend on the actual cash available for
distribution, our financial condition, capital requirements, the annual
distribution requirements under the REIT provisions of the Internal Revenue Code
and such other factors as our Board of Trustees deems relevant.

     Concurrently with the completion of our initial public offering, the
Operating Partnership issued 9,994,310 common units to PGI, Primestone
Investment Partners L.P. (a joint venture of PGI and a third party), other
contributors and certain members of management in exchange for property
contributions and cash. Additionally, since inception through December 31, 1999,
the Operating Partnership has issued 404,032 common units as partial
consideration for its acquisition of the first mortgage note of 180 N.


                                       22
<PAGE>

LaSalle Street and 479,803 common units as partial consideration for property
acquisitions from affiliates of a member of our Board of Trustees. Holders of
common units may redeem, after the lock-up period of one year from the date of
issuance, part or all of the common units for common shares on a one-for-one
basis, or at our option, cash equal to the fair market value of a common share
at the time of exchange. During 1999, 53,611 of these units were converted to
common shares.

     Also concurrently with the completion of our initial public offering, we
issued 2,000,000 of our Series A - Cumulative Convertible Preferred Shares of
Beneficial Interest, $0.01 par value per share, in a private placement to an
institutional investor for an aggregate purchase price of $40.0 million. Holders
of our Series A - Cumulative Convertible Preferred Shares can convert them to
our common shares.

     On March 25, 1998, we issued 2,579,994 of our common shares in a private
placement. In addition, during 1999 and 1998, we granted 55,099 and 50,694,
respectively, of our common shares to certain of our officers and Board members.
See "Business - Recent Developments."

     The issuance of 2,579,994 of our common shares, the common share grants
described above to certain of our employees and trustees, and the common units
described above and our Series A - Cumulative Convertible Preferred Shares
constituted private placements of securities which are exempt from the
registration requirements of the Securities Act of 1933, as amended, pursuant to
Section 4(2) thereof.


                                       23
<PAGE>





ITEM 6.  SELECTED FINANCIAL DATA

         The following table sets forth our ("PGRT") and our predecessor's
selected consolidated/combined financial data and should be read in conjunction
with our and our predecessor's consolidated/combined financial statements
included elsewhere in this Form 10-K.

<TABLE>
<CAPTION>

                                                                          (DOLLARS IN THOUSANDS)
                                               --------------------------------------------------
                                                      PGRT - CONSOLIDATED HISTORICAL
                                               --------------------------------------------------
                                                                                  PERIOD FROM
                                                                                  NOVEMBER 17,
                                                                                  1997 THROUGH
                                                   YEAR ENDED DECEMBER 31,        DECEMBER 31,
                                               ---------------------------------
                                                    1999              1998            1997
                                               -------------------------------------------------
<S>                                                <C>             <C>                <C>
STATEMENTS OF OPERATIONS DATA
REVENUE:
            Rental...........................      $ 126,687       $  97,212          $7,293
            Tenant reimbursements............         50,171          37,545           2,041
            Mortgage note interest...........          6,926           5,866             248
            Insurance settlement.............              -               -               -
            Other                                     12,770           6,978             248
                                               -------------------------------------------------
         Total revenue.......................        196,554         147,601           9,830
         EXPENSES:
            Property operations..............         44,446          29,598           2,213
            Real estate taxes................         34,470          25,077           1,765
            Depreciation and amortization....         33,258          25,447           2,478
            Interest.........................         42,648          30,901           1,680
            Interest-affiliates..............              -               -               -
            Loss on land development option..            600               -               -
            General and administrative.......          7,565           5,712             267
            Financing fees...................              -               -               -
            Property and asset
              management fees-affiliate......              -               -               -
            Provision for environmental
              remediation costs..............              -               -               -
            Write-off of deferred tenant
              costs..........................              -               -               -
                                               -------------------------------------------------
         Total expenses......................        162,987         116,735           8,403
                                               -------------------------------------------------
          Income (loss) before gain on
             sales of real estate, minority
             interests and extraordinary items        33,567         30,866            1,427
          Gain on sales of real estate........        53,050              -                -
                                                 -----------------------------------------------
          Income (loss) before minority
             interests and extraordinary
             items............................        86,617         30,866            1,427
          Minority interests..................       (30,687)        (9,368)            (635)
                                                 -----------------------------------------------
          Income (loss) before extraordinary
             items............................        55,930         21,498              792
          Extraordinary (loss) gain on early
             extinguishment of debt, net of
             minority interests' share in the
             amount of $754 in 1999, $878
             in 1998 and $1,127 in 1997.......        (1,082)        (1,253)               -
                                                 -----------------------------------------------
          Net income (loss)...................        54,848         20,245              792

          Net income allocated to preferred
            shareholders......................       (12,103)        (7,971)            (345)
                                                 -----------------------------------------------
          Net income available to
             common shareholders..............     $  42,745       $ 12,274           $  447
                                                 ================================================


</TABLE>


<TABLE>
<CAPTION>

                                               ---------------------------------------
                                                   PREDECESSOR - COMBINED HISTORICAL
                                               ---------------------------------------
                                               PERIOD FROM
                                               JANUARY 1,
                                               1997 THROUGH
                                               NOVEMBER 16,     YEAR ENDED DECEMBER 31,
                                               ----------------------------------------
                                                  1997          1996             1995
                                               ----------------------------------------
<S>                                               <C>         <C>              <C>
STATEMENTS OF OPERATIONS DATA
REVENUE:
            Rental...........................     $27,947     $ 30,538         $ 33,251
            Tenant reimbursements............      12,490       14,225           14,382
            Mortgage note interest...........           -            -                -
            Insurance settlement.............           -            -            7,257
            Other                                   1,229        2,551            1,944
                                               ----------------------------------------
         Total revenue.......................      41,666       47,314           56,834
         EXPENSES:
            Property operations..............       8,622        9,767            9,479
            Real estate taxes................       8,575        9,383            9,445
            Depreciation and amortization....      11,241       12,409           12,646
            Interest.........................      24,613       26,422           27,671
            Interest-affiliates..............       9,804       10,795            8,563
            Loss on land development option..           -            -                -
            General and administrative.......       2,414        4,927            4,508
            Financing fees...................       1,180        1,232                -
            Property and asset
              management fees-affiliate......       1,348        1,561            1,496
            Provision for environmental
              remediation costs..............       3,205            -                -
            Write-off of deferred tenant
              costs..........................           -        3,081            13,373
                                               ----------------------------------------
         Total expenses......................      71,002       79,577           87,181
                                               ----------------------------------------
          Income (loss) before gain on
             sales of real estate, minority
             interests and extraordinary items    (29,336)     (32,263)         (30,347)
          Gain on sales of real estate........        286          846              771
                                               -----------------------------------------
          Income (loss) before minority
             interests and extraordinary
             items............................    (29,050)     (31,417)         (29,576)
          Minority interests..................        666          894            3,281
                                               -----------------------------------------
          Income (loss) before extraordinary
             items............................    (28,384)     (30,523)         (26,295)
          Extraordinary (loss) gain on early
             extinguishment of debt, net of
             minority interests' share in the
             amount of $754 in 1999, $878
             in 1998 and $1,127 in 1997.......     65,990            -                -
                                               -----------------------------------------
          Net income (loss)...................    $37,606     $(30,523)        $(26,295)
                                               =========================================
          Net income allocated to preferred
            shareholders......................

          Net income available to
             common shareholders..............



</TABLE>



                                       24
<PAGE>


<TABLE>
<CAPTION>

                                                          PGRT - CONSOLIDATED HISTORICAL
                                                          ------------------------------
                                                                                      PERIOD FROM
                                                                                      NOVEMBER 17,
                                                                                      1997 THROUGH
                                                        YEAR ENDED DECEMBER 31,       DECEMBER 31,
                                                     --------------------------------------------------
                                                          1999             1998            1997
                                                     --------------------------------------------------
<S>                                                    <C>           <C>                    <C>
BASIC EARNINGS AVAILABLE TO COMMON SHARES
  PER WEIGHTED-AVERAGE COMMON SHARE (1):
  Income before gain on sales of real estate and
    extraordinary items.........................       $   0.84      $        0.91          $   0.04
  Gain on sales of real estate, net of minority
    interests...................................           2.05                 -               -
  Extraordinary loss on extinguishment of debt,
    net of minority interests...................          (0.07)             (0.08)             -
                                                     ---------------------------------------------------
  Net income available per weighted- average
    common share of beneficial interest - basic.       $   2.82      $        0.83          $   0.04
                                                     ===================================================
DILUTED EARNINGS AVAILABLE TO COMMON SHARES
  PER WEIGHTED-AVERAGE COMMON SHARE (1):
  Income before gain on sales of real estate and
    extraordinary items.........................       $   0.84      $        0.91          $   0.04
  Gain on sales of real estate, net of minority
    interest....................................           2.04                -                  -
  Extraordinary loss on extinguishment of debt,
    net of minority interests...................          (0.07)             (0.08)             -
                                                     ---------------------------------------------------
  Net income available per weighted- average
    common share of beneficial interest - diluted      $   2.81      $        0.83          $   0.04
                                                     ===================================================

</TABLE>

<TABLE>
<CAPTION>

                                                                                   (DOLLARS IN THOUSANDS)
                                                      -----------------------------------------------------------------------------
                                                                                                           PREDECESSOR - COMBINED
                                                               PGRT - CONSOLIDATED HISTORICAL                    HISTORICAL
                                                                        DECEMBER 31,                             DECEMBER 31,
                                                      ------------------------------------------------   --------------------------
                                                          1999               1998           1997            1996           1995
                                                      ------------------------------------------------   --------------------------
<S>                                                      <C>              <C>             <C>             <C>            <C>
BALANCE SHEET DATA:
   Real estate assets, exclusive of property under
      development and before accumulated
      depreciation ...............................       $1,151,094       $   843,031     $589,279        $291,757       $289,558
   Total assets...................................        1,444,175         1,164,514      741,468         325,230        343,641
   Mortgage notes payable, credit facilities and
      bonds payable...............................          799,171           593,168      328,044         421,983        405,562
   Total liabilities..............................          901,767           668,728      370,192         447,927        434,993
   Minority interests.............................          169,070           145,781      147,207          (6,905)        (6,047)
   Series A Preferred Shares......................           39,703                 -            -               -              -
   Shareholders' equity (partners' deficit).......          333,635           350,005      224,069        (115,792)       (85,305)

</TABLE>


                                       25
<PAGE>


<TABLE>
<CAPTION>


                                                                      (DOLLARS IN THOUSANDS)
                            --------------------------------------------------------------------------------------------------------
                                        PGRT - CONSOLIDATED HISTORICAL                       PREDECESSOR - COMBINED HISTORICAL
                            --------------------------------------------------------------------------------------------------------
                                                                    PERIOD FROM       PERIOD FROM
                                                                    NOVEMBER 17,    JANUARY 1, 1997
                                                                    1997 THROUGH        THROUGH
                                   YEAR ENDED DECEMBER 31,          DECEMBER 31,      NOVEMBER 16,         YEAR ENDED DECEMBER 31,
                                   1999               1998             1997               1997               1996           1995
                            --------------------------------------------------------------------------------------------------------
<S>                              <C>              <C>              <C>              <C>                  <C>           <C>
OTHER DATA:
Funds from operations(2)..       $   53,415       $   46,762       $     3,619      $    (14,461)        $  (17,367)   $   (12,733)
Cash flows provided by
   (used in):
   Operating activities...       $  105,092       $   53,525       $     6,706      $     (4,241)        $   (2,462)   $    (1,259)
   Investing activities...         (437,332)        (361,384)         (353,864)           (3,926)               423         (9,176)
   Financing activities...          306,907          342,390           355,390             6,331              5,733         10,873
Ratio of earnings to
   combined fixed charges
   and preferred share                                                                                            -
   distributions(3)...........         1.21             1.48              1.50                 -                  -              -
Office Properties:
   Square footage.........        8,049,941        5,833,280         4,073,722         2,353,759          1,414,897      1,414,897
   Occupancy (%)..........             95.0             89.9              91.9              88.0               92.5           95.8
Industrial Properties:
   Square footage.........        5,146,668        5,834,974         5,832,974         5,696,355          2,462,430       2,551,624
   Occupancy (%)..........             84.3             90.5              87.9              87.9               73.5            72.9

</TABLE>

- ----------

     (1)  Net income available per weighted-average common share of beneficial
          interest-basic equals net income divided by 15,141,630, 14,862,958 and
          12,593,000 common shares for the years ended December 31, 1999 and
          1998 and for the period from November 17, 1997 through December 31,
          1997, respectively. Net income available per weighted-average common
          share of beneficial interest-diluted equals net income divided by
          15,208,911, 14,875,035, and 12,593,000 common shares for the years
          ended December 31, 1999 and 1998 and for the period from November 17,
          1997 through December 31, 1997, respectively. See Note 8 to our
          consolidated financial statements for further information.

     (2)  As defined by the National Association of Real Estate Investment
          Trusts ("NAREIT"), in its March 1995 White Paper, Funds from
          Operations represents net income (loss) before minority interest of
          holders of Common Units (computed in accordance with GAAP), excluding
          gains (or losses) from debt restructuring and sales of property, plus
          real estate related depreciation and amortization (excluding
          amortization of deferred financing costs) and after adjustments for
          unconsolidated partnerships and joint ventures. Non-cash adjustments
          to Funds from Operations were as follows: in all periods, depreciation
          and amortization, for the year ended December 31, 1999, an adjustment
          associated with a Services Company write off, the net gain on treasury
          lock terminations, and the loss on a land development option, for the
          period from January 1, 1997 through November 16, 1997, provision for
          environmental remediation cost, for the years ended December 31, 1999,
          1996 and 1995, gains on the sale of real estate, for the years ended
          December 31, 1996 and 1995, write-off of deferred tenant costs, and
          for the year ended December 31, 1995, excess proceeds from insurance
          claims. Management considers Funds from Operations an appropriate
          measure of performance of an office and/or industrial REIT because
          industry analysts have accepted it as such. We computed Funds from
          Operations in accordance with standards established by the Board of
          Governors of NAREIT in its March 1995 White Paper (with the exception
          that we report rental revenues on a cash basis (based on contractual
          lease terms), rather than a straight-line GAAP basis, which we believe
          results in a more accurate presentation of our actual operating
          activities), which may differ from the methodology for calculating
          Funds from Operations used by other REITs and, accordingly, may not be
          comparable to such other REITs. Further, Funds from Operations does
          not represent amounts available for management's discretionary use
          because of needed capital replacement or expansion, debt repayment
          obligations, or other commitments and uncertainties. Funds from
          Operations should not be considered as an alternative for net income
          as a measure of profitability nor is it comparable to cash flows
          provided by operating activities determined in accordance with GAAP.


                                       26
<PAGE>

     (3)  The ratios of earnings to combined fixed charges and preferred share
          distributions were computed by dividing earnings by combined fixed
          charges and preferred share distributions. For this purpose, earnings
          consist of income (loss) before minority interest, plus combined fixed
          charges. Combined fixed charges consist of interest incurred,
          amortization of debt issuance costs, and preferred share
          distributions. The Predecessor's historical earnings were insufficient
          to cover fixed charges by approximately $29.1 million, $31.4 million,
          and $29.6 million for the period from January 1, 1997 through November
          16, 1997 and for the years ended December 31, 1996, and 1995,
          respectively.


                                       27
<PAGE>



The following is our consolidated quarterly summary of operations.

<TABLE>
<CAPTION>

                                                                            YEAR ENDED DECEMBER 31, 1999
                                                     ------------------------------------------------------------------------------
                                                                            FOURTH           THIRD         SECOND        FIRST
                                                           TOTAL            QUARTER         QUARTER        QUARTER      QUARTER

                                                     ------------------------------------------------------------------------------
                                                                                (In thousands, except per share amounts)
<S>                                                     <C>               <C>             <C>            <C>            <C>
Total revenues ......................................   $ 196,554         $ 44,767        $ 49,796       $ 52,912       $ 49,079
Total expenses ......................................     162,987           39,136          40,487         42,353         41,011
                                                     ------------------------------------------------------------------------------
Income before gain on sales of real estate, minority
   interests and extraordinary items ................      33,567            5,631           9,309         10,559          8,068
Gain on sales of real estate ........................      53,050              568          48,125          4,357              -
                                                     ------------------------------------------------------------------------------
Income before minority interests and extraordinary
   items ............................................      86,617            6,199          57,434         14,916          8,068
Income allocated to minority interests ..............     (30,687)          (1,440)        (22,330)        (4,861)        (2,056)
                                                     ------------------------------------------------------------------------------
Income before extraordinary items ...................      55,930            4,759          35,104         10,055          6,012
Extraordinary items - loss on early extinguishment
   of debt, net of minority interests in the amount
   $178 in the fourth quarter and $576 in the third
   quarter ..........................................      (1,082)            (253)           (829)             -              -
                                                     ------------------------------------------------------------------------------
Net income ..........................................      54,848            4,506          34,275         10,055          6,012
Net income allocated to preferred
    shareholders ....................................     (12,103)          (3,036)         (3,037)        (3,030)        (3,000)
                                                     ------------------------------------------------------------------------------
Net income applicable to common shares ..............   $  42,745         $  1,470        $ 31,238       $  7,025       $  3,012
                                                     ==============================================================================
BASIC EARNINGS AVAILABLE TO COMMON SHARES PER
   WEIGHTED AVERAGE COMMON SHARE:

Income before gain on sales of real estate and
   extraordinary items ..............................   $    0.84         $   0.11        $   0.25       $   0.29       $   0.20
Gain on sales of real estate, net of minority
   interests ........................................        2.05             0.01            1.86           0.17              -
Extraordinary  loss on extinguishment of debt,
   net of minority interests ........................       (0.07)           (0.02)          (0.05)             -              -
                                                     ------------------------------------------------------------------------------
Net income available per weighted-average
   common share of beneficial interest - basic ......   $    2.82         $   0.10        $   2.06       $   0.46       $   0.20
                                                     ==============================================================================
Weighted average common shares
   outstanding-basic ................................      15,142           15,163          15,136         15,136         15,132
                                                     ==============================================================================
DILUTED EARNINGS AVAILABLE TO COMMON SHARES
   PER WEIGHTED AVERAGE COMMON SHARE:
Income before gain on sales of real estate and
   extraordinary items ..............................   $    0.84         $   0.11        $   0.25       $   0.29       $   0.20
Gain on sales of real estate, net of minority
   interests ........................................        2.04             0.01            1.85           0.17              -
Extraordinary loss on extinguishment of debt,
   net of minority interests ........................       (0.07)           (0.02)          (0.05)             -              -
                                                     ------------------------------------------------------------------------------
Net income available per weighted-average
   common share of beneficial interest - diluted ....   $    2.81         $   0.10        $   2.05       $   0.46       $   0.20
                                                     ==============================================================================
Weighted average common shares
   outstanding - diluted ............................      15,209           15,222          15,254         15,209         15,134
                                                     ==============================================================================
Distributions paid per common share .................   $    1.35         $ 0.3375        $ 0.3375       $ 0.3375        $0.3375
                                                     ==============================================================================

</TABLE>



                                       28
<PAGE>


<TABLE>
<CAPTION>

                                                                                                                         PERIOD FROM
                                                                                                                        NOVEMBER 17,
                                                                                                                            1997
                                                                  YEAR ENDED DECEMBER 31, 1998                             THROUGH
                                            ----------------------------------------------------------------------------------------
                                                              FOURTH         THIRD         SECOND          FIRST        DECEMBER 31,
                                                TOTAL        QUARTER        QUARTER        QUARTER        QUARTER           1997
                                            ----------------------------------------------------------------------------------------
                                                                   (In thousands, except per share amounts)
<S>                                            <C>            <C>            <C>            <C>            <C>            <C>
Total revenues ...........................     $ 147,601      $  40,675      $  41,252      $  36,923      $  28,751      $   9,830
Total expenses ...........................       116,735         31,904         31,563         29,708         23,560          8,403
                                            ----------------------------------------------------------------------------------------
Income before minority interests and

   extraordinary item ....................        30,866          8,771          9,689          7,215          5,191          1,427
Income allocated to minority interests ...        (9,368)        (2,347)        (2,704)        (2,352)        (1,965)          (635)
                                            ----------------------------------------------------------------------------------------
Income before extraordinary items ........        21,498          6,424          6,985          4,863          3,226            792
Extraordinary items - loss on early
   extinguishment of debt, net of minority
   interests in the amount $503 in the
   fourth quarter and $375 in the second .        (1,253)          (728)            --           (525)            --             --
   quarter
                                            ----------------------------------------------------------------------------------------
Net income ...............................        20,245          5,696          6,985          4,338          3,226            792
Net income allocated to preferred
   shareholders ..........................        (7,971)        (2,980)        (2,950)        (1,341)          (700)          (345)
                                            ----------------------------------------------------------------------------------------
Net income applicable to common shares ...     $  12,274      $   2,716      $   4,035      $   2,997      $   2,526      $     447
                                            ========================================================================================
Earnings per common share - basic and
  diluted:
     Income before extraordinary items ...     $    0.91      $    0.23      $    0.26      $    0.22      $    0.19      $    0.04
     Extraordinary items .................         (0.08)         (0.05)            --          (0.03)            --             --
                                            ----------------------------------------------------------------------------------------
Net income ...............................     $    0.83      $    0.18      $    0.26      $    0.19      $    0.19      $    0.04
                                            ========================================================================================
Weighted average common shares outstanding
                                                  14,875         15,137         15,535         15,572         13,181         12,593
                                            ========================================================================================
Distributions paid per common share ......     $  1.1789      $  0.3375      $  0.3375      $  0.3375      $  0.1664      $      --
                                            ========================================================================================

</TABLE>




                                       29


<PAGE>

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

OVERVIEW

         The following discussion should be read in conjunction with our
historical consolidated financial statements and our predecessor's combined
financial statements and related notes thereto included elsewhere in this Form
10-K.

         We are a fully-integrated real estate investment company organized
under Maryland law, providing property management, leasing, marketing,
acquisition, development, redevelopment, construction, finance and other related
services. As of December 31, 1999, we owned 28 office properties (five were
acquired in 1999, one development was placed in service in 1999, eight were
acquired during 1998 and fourteen were contributed or acquired in 1997), 40
industrial properties (one was acquired in 1999, one development was placed in
service in 1999 and 38 were contributed or acquired in 1997), one retail center,
and one parking facility. Our properties are located primarily in the Chicago
metropolitan area. In addition, we own a 50% common interest in a joint venture
which owns an office property located at 77 West Wacker Drive, Chicago,
Illinois, and a mortgage on an office property located at 180 N. LaSalle Street,
Chicago, Illinois.

         As of December 31, 1999, in terms of net rentable square feet,
approximately 83.3% of our office properties and 85.8% of our industrial
properties were located in the Chicago metropolitan area in prime business
locations within established business communities. The properties located in the
Chicago metropolitan area account for approximately 92.3% of our rental revenue
and 94.4% of our tenant reimbursements revenue for the year ended December 31,
1999. Our remaining office properties are located in the Cleveland, Ohio;
Nashville, Tennessee; Knoxville, Tennessee; and Milwaukee, Wisconsin
metropolitan areas. Our remaining industrial properties are located in the
Columbus, Ohio metropolitan area.

         Our income is derived primarily from rental revenue (including tenant
reimbursements) from our properties supplemented by interest income on the
mortgage note owned. We expect that revenue growth over the next several years
will come from a combination of additional acquisitions and revenue generated
through increased rental and occupancy rates in the current portfolio.

CAUTIONARY STATEMENTS

         The following discussion and analysis of the consolidated financial
condition and results of operations should be read in conjunction with our
Consolidated Financial Statements and Notes thereto contained herein. Statements
contained in "Management's Discussion and Analysis of Financial Condition and
Results of Operations," include certain forward-looking statements within the
meaning of the Private Securities Litigation Reform Act of 1995 which reflect
management's current view with respect to future events and financial
performance. Such forward-looking statements are subject to certain risks and
uncertainties including, but not limited to, the effects of future events on our
financial performance; the risk that we may be unable to finance our planned
acquisition and development activities; risks related to the industrial and
office industry in which our properties compete, including the potential adverse
impact of external factors such as inflation, consumer confidence, unemployment
rates and consumer tastes and preferences; risks associated with our development
activities, such as the potential for cost overruns, delays and lack of
predictability with respect to the financial returns associated with these
development activities; the risk of a potential increase in market interest
rates from current rates; and risks associated with real estate ownership, such
as the potential adverse impact of changes in the local economic climate on the
revenues and the value of our



                                       30
<PAGE>

properties' systems as well as our tenants and vendors. Readers are cautioned
not to place undue reliance on these forward-looking statements, which speak
only as of December 31, 1999.

         Among the facts about which we have made assumptions are the following:

            -   future economic conditions which may impact the demand for
                office space and our tenants' ability to pay rent, either at
                current or increased levels;

            -   prevailing interest rates;

            -   the extent of any inflation on operating expenses;

            -   our ability to reduce various expenses as a percentage of
                revenues;

            -   our continuing ability to pay amounts due to our preferred
                shareholders prior to any distribution to our common
                shareholders;

            -   the continuing availability of our credit facilities; and

            -   the continuing availability of financing and capital.

         In addition, historical results and percentage relationships set forth
herein are not necessarily indicative of future operations.

RESULTS OF OPERATIONS

COMPARISON OF THE YEAR ENDED DECEMBER 31, 1999 TO THE YEAR ENDED DECEMBER 31,
1998.

         For the year ended December 31, 1999, the changes in rental and
reimbursable income, property operating expenses, real estate taxes and
depreciation and amortization from the same period in 1998 are due principally
to a full year of operating results for eight properties acquired in the first
half of 1998 and the additional operating results for the six properties
acquired and retained during 1999, offset by the sale of eleven properties in
1999 and the sale of 50% of our ownership in the 77 West Wacker Drive building
as of September 30, 1999.

         For the year ended December 31, 1999, rental revenue increased $29.5
million, or 30.3%, to $126.7 million (including lease termination revenue of
$5.2 million), tenant reimbursement income increased $12.6 million, or 33.6%, to
$50.2 million, other property revenues increased $7.0 million (including the
sale of easement rights for $2.6 million) or 163.6%, to $11.2 million, interest
income and other decreased $1.1 million, or 42.5%, to $1.6 million, property
operating expenses increased $14.8 million, or 50.2%, to $44.4 million, real
estate tax expense increased $9.4 million, or 37.5%, to $34.5 million, and
depreciation and amortization increased $7.8 million, or 30.7 %, to $33.3
million, in each case as compared to the year ended December 31, 1998. These
increases are impacted by 5.5 months less operations for seven of the nine
industrial properties and one office property sold on July 14, 1999 and the sale
of 50% of our ownership in 77 West Wacker Drive building as of September 30,
1999. For the corresponding 5.5 months in 1998, the industrial properties and
one office property had rental revenue of $3.4 million, tenant reimbursement
income of $0.8 million, property operating expenses of $0.1 million, real estate
tax expense of $0.9 million and depreciation and amortization of $0.7 million.
For the corresponding 3 months in 1998, the 77 West Wacker Drive building had a
revenue of $5.6 million, tenant reimbursement income of $3.0 million, property
operating expenses of $1.5 million, real estate tax expense of $1.9 million and
depreciation and amortization of $2.1 million. Included in interest income and
other is the net gain on the termination of treasury lock agreements of $0.6
million for the year ended December 31, 1999, due to events described in "Recent
Developments".


                                       31
<PAGE>

RESULTS OF OPERATIONS (CONTINUED)

         Rental revenue, tenant reimbursement income and other property revenue
for properties held in both periods increased $0.8 million for the year ended
December 31, 1999, primarily due to increased occupancy and rental rates.
Corresponding property operating expenses and real estate taxes increased $0.7
million primarily due to increases in real estate tax expense. Depreciation and
amortization increased $1.6 million for the year ended December 31, 1999,
primarily due to an increase in tenant improvements and leasing commissions.

         Mortgage note interest income increased $1.1 million, or 18.1%, to $6.9
million for the year ended December 31, 1999, compared to the same period in
1998, due to the additional advances on the first mortgage note held encumbering
the office property known as 180 North LaSalle Street.

         Interest expense increased $11.7 million, or 38.0%, to $42.6 million
during the year ended December 31, 1999, compared to the same period in 1998.
The increase was principally due to new mortgages obtained on certain of the
properties which were acquired in 1999 and 1998 and an increase in LIBOR rates
which increased the interest charges on our variable rate debt.

         General and administrative expense increased $1.9 million, or 32.4% to
$7.6 million for the year ended December 31, 1999, compared to the same period
in 1998, reflecting costs related to our growth.

         Gain on sales of real estate increased $53.1 million for the year ended
December 31, 1999, compared to the same period in 1998, due to the sale of
certain properties as more fully described in "Business Recent Developments."

         Income allocated to minority interests increased $21.3 million, or
227.6% to $30.7 million for the year ended December 31, 1999, compared to the
same period in 1998, due to an increase in income before minority interests of
$55.8 million, or 180.6% to $86.6 million. The increase in income before
minority interests and extraordinary item was principally due to gains on the
sales of real estate, additional properties acquired in 1999 and 1998 and the
effects they had on the revenue and expenses described above.

         The extraordinary loss on extinguishment of debt, net of minority
interests, decreased $0.2 million for the year ended December 31, 1999, due to
the write-off of unamortized deferred financing fees related to mortgage debt
repaid upon the sale of certain properties as more fully described in "Business
Recent Developments".

         Net income increased $34.6 million, or 170.9%, to $54.8 million for the
year ended December 31, 1999, compared to the same period in 1998, due to the
changes in revenue, expenses, gain on sales of real estate, minority interests
and extraordinary loss on extinguishment of debt described above.

         The following analysis provides a comparison of our operations for the
years ended December 31, 1998 and 1997. The period from January 1, 1997 through
November 16, 1997 represents the activity of the Predecessor's properties and
the period from November 17, 1997 through December 31, 1998 represents our
activity.


                                       32
<PAGE>

RESULTS OF OPERATIONS (CONTINUED)

COMPARISON OF THE YEAR ENDED DECEMBER 31, 1998 TO THE YEAR ENDED DECEMBER 31,
1997

         In analyzing the operating results for the year ended December 31,
1998, the changes in rental and reimbursable revenue, property operating
expenses, real estate taxes and depreciation and amortization from 1997 are due
principally to the addition of operating results from properties contributed and
acquired as part of our initial public offering as well as properties acquired
after our initial public offering through December 31, 1998.

         The Predecessor's properties owned by us as of December 31, 1998
consisted of five office properties, 17 industrial properties, and a parking
facility. At the time of our initial public offering, nine additional office
properties, 29 additional industrial properties and one retail center were
contributed or acquired. After the date of our initial public offering and
through December 31, 1998, we acquired ten additional office properties and a
first mortgage note encumbering an office property as described in the footnotes
to our consolidated financial statements contained elsewhere in this Form 10-K.

         For the year ended December 31, 1998, rental revenue and tenant
reimbursements income increased $85.0 million, or 170.7%, to $134.8 million, and
other revenue increased $5.5 million, or 372.4%, to $7.0 million, property
operating expenses and real estate tax expense increased $33.5 million, or
158.2%, to $54.7 million, and depreciation and amortization expense increased
$11.7 million, or 85.5%, to $25.4 million as compared to the year ended December
31, 1997. The primary reason for the increases in the above revenue and expense
categories was the contribution and acquisition of new office and industrial
properties we have made since our initial public offering. The additional office
and industrial properties resulted in increased total rental revenue and tenant
reimbursements income of $88.6 million, other revenue of $5.0 million, property
operating expenses and real estate tax expense of $35.4 million and depreciation
and amortization expense of $11.9 million for the year ended December 31, 1998.
Included in the rental revenue increase for 1998 is $4.1 million related to
lease terminations. Rental revenue and tenant reimbursement revenue for the
Predecessor's properties increased $0.6 million for the year ended December 31,
1998 compared to the same period in 1997. Depreciation and amortization expense
for the Predecessor's properties increased $0.7 million for the year ended
December 31, 1998 compared to the same period in 1997.

         Mortgage note interest income increased by $5.6 million to $5.9 million
due to the acquisition of the first mortgage note encumbering the property known
as 180 North LaSalle Street in December 1997.

         Interest expense had a net increase of $4.6 million, or 17.5%, to $30.9
million during the year ended December 31, 1998. The increase was due to a $36.2
million increase due to mortgages obtained on certain of the properties which
were contributed or acquired after our initial public offering, as well as our
Credit Facilities borrowings used to fund property acquisitions, offset by a
$31.6 million decrease as a result of the repayment of debt with proceeds from
our initial public offering or debt forgiveness in 1997.

         General and administrative expense increased $3.0 million during the
year ended December 31, 1998, reflecting costs related to our new public status
and increased size.

         The $1.2 million decrease in financing fees and the $1.3 million
decrease in property and asset management fees are due to these fees being
incurred by the Predecessor under their previous ownership and are costs we no
longer incur.


                                       33
<PAGE>

RESULTS OF OPERATIONS (CONTINUED)

         In 1997, the Predecessor recorded a provision for environmental
remediation costs of $3.2 million, which represents the estimated costs to be
incurred for the clean-up of environmental contamination of certain industrial
properties. PGI has contractually agreed to indemnify us from any environmental
liabilities we may incur. No additional provision was deemed necessary in 1998.

         Income allocated to minority interests increased $9.4 million to $9.4
million for the year ended December 31, 1998 compared to the same period in 1997
due to an increase in income before minority interest of $58.5 million, or
212.0%, to $30.9 million due to the changes in revenue and expenses described
above and a change in the ownership structure. The increase in income before
minority interests is due to additional properties either being contributed or
acquired and the effects they had on revenue and expenses described above. The
change in ownership structure is due to certain ownership percentages changing
due to our initial public offering.

         Extraordinary gain on extinguishment of debt decreased $67.2 million to
a $1.3 million extraordinary loss in 1998, due to the gain in 1997 related to
the forgiveness of debt principal net of the write-off of various deferred
costs, while the loss in 1998 represents only the write-off deferred costs for
mortgage indebtness that was repaid or refinanced and a reduction in the maximum
balance that can be drawn on one of our Credit Facilities.

         Net income decreased $18.2 million, or 47.3%, to $20.2 million for the
year ended December 31, 1998 compared to the same period in 1997 due to the
changes in revenue, expenses, minority interest, and extraordinary items
described above.

LIQUIDITY AND CAPITAL RESOURCES

         LIQUIDITY. Net cash provided from operations represents the primary
source of liquidity to fund distributions, debt service and recurring capital
costs. In order to qualify as a REIT for federal income tax purposes, we must
distribute 95% of our taxable income (excluding capital gains) annually.
Accordingly, we currently intend to continue to make, but are not contractually
bound to make, regular quarterly distributions to holders of our common
shares/units and our preferred shares. We have established annual distribution
rates as follows: $1.35 per annum per common share/unit, 7.5% per annum ($1.50
per share) for each Series A preferred share and 9% per annum ($2.25 per share)
for each Series B preferred share.

         CREDIT FACILITIES. Our Credit Facilities, with a maximum loan
availability totaling $46.5 million, have been provided by various financial
institutions, and are collateralized by first mortgages on certain properties
owned by the Operating Partnership. Subject to our compliance with the
applicable loan covenants, the Credit Facilities may be used to provide funds
for acquisitions and development activities and to provide the replacement
letters-of-credit for the $26.9 million of tax-exempt bonds. As of December 31,
1999, $19.5 million was drawn on our Credit Facilities (excluding the
letters-of-credit impact on current availability). See Note 4 to our
consolidated financial statements for further information.

         PROPERTY SALES. On April 19, 1999, we sold approximately 161,710 net
rentable square feet of our 122 South Michigan Avenue office building to NLU for
a gross sales price of $14.95 million and consideration, net of commission,
closing costs and a $1.1 million capital improvement allowance, of $12.1
million. As part of this sale, NLU also acquired an undivided 31.56% interest in
certain common areas of the property. We continue to own the remaining 350,659
net rentable square feet of the building and are responsible for the management
of the entire property. The sale resulted in a gain of $3.8 million for the year
ended December 31, 1999.


                                       34
<PAGE>

LIQUIDITY AND CAPITAL RESOURCES (CONTINUED)

         On July 8, 1999, we sold approximately 7.5 acres of land to Antunes
Properties, L.L.C. for a sale price of $1.0 million. The Services Company, an
unconsolidated affiliate, constructed an office/warehouse facility on this
parcel and sold it to Antunes Properties, L.L.C. This affiliate leased the land
from us during the portion of the construction period in which we owned the
land.

         On July 14, 1999, we sold nine industrial properties and one office
property in a single transaction with a total sale price of $89.5 million. In
order to defer the taxable gain on this transaction, net sales proceeds of $26.7
million were deposited into a tax-deferred exchange trust for reinvestment in
future property purchases. Four replacement properties were identified under the
tax-deferred exchange trust; three of these properties have been acquired as of
December 31, 1999. The fourth property was acquired in January 2000.

         On September 30, 1999, we sold 50% of our common interest in the 77
West Wacker Drive property for $22.0 million and a $66.0 million preferred
interest (providing a cumulative preferred return of 9.5% per annum) in this
property. The remaining 50% common interest will be accounted for using the
equity method of accounting. Prior to the closing of the transaction, the
existing $170.0 million non-recourse first mortgage was refinanced with a new
$170.0 million non-recourse first mortgage. The new mortgage loan bears interest
at LIBOR plus 1.25%, requiring interest only payments from time to time and
annual principal payments, maturing September 2004. The sale resulted in a gain
of $48.3 million for the year ended December 31, 1999. In order to defer the
taxable gain on this transaction, net proceeds of $84.9 million were deposited
into a tax-deferred exchange trust and used for the acquisition of IBM Plaza and
the Brush Hill Office Center.

         On December 22, 1999, we sold an industrial property for a sale price
of $4.5 million. The sale resulted in a gain of $0.6 million attributed to the
building and approximately $0.3 million attributed to the adjacent land for the
year ended December 31, 1999. In order to defer the taxable gain on this
transaction, net sales proceeds of $4.2 million were deposited into a
tax-deferred exchange trust for reinvestment in future property purchases. Two
replacement properties were identified under the tax deferred trust. These
properties were acquired in January 2000.

         INDEBTEDNESS. Our aggregate indebtedness was $799.2 million and $593.2
million at December 31, 1999 and 1998, respectively. At December 31, 1999, such
indebtedness had a weighted average maturity of 5.2 years and bore interest at a
weighted average interest rate of 7.7% per annum. At December 31, 1999, $329.6
million, or 41.2%, of such indebtedness bore interest at fixed rates and $469.6
million, or 58.8% of such indebtedness, including $74.5 million of tax-exempt
bonds, bore interest at variable rates. Included in the variable rate debt is
$160.0 million subject to an interest rate swap agreement and $65.0 million
subject to an interest rate collar agreement and $70.0 million subject to an
interest cap agreement.

         We have financed a portion of our acquisitions with proceeds from
mortgage notes payable from various financial institutions, with fixed and
variable interest rates and maturities from 2000 through 2013. We believe that
our properties have excess value that may be utilized for additional borrowings
or debt securitizations.

         Under the provisions of one of the credit facilities, we are obligated
to maintain interest rate contracts on a portion of our variable rate
indebtedness. On January 31, 1999, we entered into an interest rate collar
agreement, for the period from January 31, 1999 through January 31, 2002, with a
financial institution for an original notional amount of $65.0 million. The
interest


                                       35
<PAGE>

LIQUIDITY AND CAPITAL RESOURCES (CONTINUED)

rate ceiling under the agreement is based on a LIBOR index rate of 7.50% and the
interest rate floor is based on a LIBOR index rate of 3.73%. We entered into an
interest rate cap agreement in July, 1999 with a financial institution for an
original notional amount of $150.0 million at 7.0% during the period from July 1
to October 1, 1999. On November 1, 1999 we entered into an interest rate collar
agreement for the period from November 1, 1999 through September 30, 2004 with a
financial institution for an original notional amount of $170.0 million. The
interest rate ceiling under the agreement is based on a LIBOR rate of 7.75% and
the interest rate floor is based on a LIBOR rate of 5.62% through September 30,
2002 increasing to a LIBOR rate of 6.095% thereafter. This agreement satisfy our
obligation to maintain interest rate contracts under the provisions of one of
the credit facilities. On December 10, 1999, we entered into an interest rate
swap agreement for the period from December 10, 1999 through December 10, 2002
for an original notional amount of $160.0 million that decreases to $158.4
million on December 10, 2000 and to $155.2 million on December 10, 2001, based
on a LIBOR index rate of 6.3% and effectively fixed the interest rate on $160.0
million of variable rate mortgage indebtedness at a rate of 8.0%. On March 20,
2000, we entered into an interest rate cap agreement for the period from March
20, 2000 through November 17, 2000 for a notional amount of $70.0 million. The
interest rate under the agreement is capped at the LIBOR interest rate of 8.0%.
These agreements satisfy our obligation to maintain interest rate contracts
under the provisions of one of the credit facilities.

         DEBT REPAYMENTS. In connection with the sale of nine industrial
properties and one office property on July 14, 1999, mortgage debt of $63.2
million was repaid with sales proceeds or assumed by the purchaser.

         In connection with the sale of a 50% common interest in the 77 West
Wacker Drive building on September 30, 1999, $170.0 million of debt was
transferred to a newly formed unconsolidated joint venture. Therefore, the
indebtedness is no longer included in our consolidated financial statements.

         FUTURE DEBT AND EQUITY OFFERINGS. We filed a shelf registration
statement on Form S-3 with the Securities and Exchange Commission, which was
declared effective on June 8, 1999, to register up to $500.0 million of our
equity and debt securities for future sale at prices and on terms to be
determined at the time of offering.

         CAPITAL IMPROVEMENTS. Our properties require periodic investments of
capital for tenant-related capital improvements. During 1999 and 1998, our
tenant improvements and leasing commissions averaged $24.54 and $18.04,
respectively, per square foot of newly leased office space, $8.19 and $3.85,
respectively, per square foot of renewal leased office space, and $2.12 and
$4.53, respectively, per square foot of newly leased industrial space. Our
estimated annual cost of recurring tenant improvements and leasing commissions
is approximately $7.4 million based upon average annual square feet for leases
expiring during the year ending December 31, 2000. Our cost of general capital
improvements to our properties averages approximately $3.5 million annually
based upon an estimate of $0.19 per square foot.

         LIQUIDITY REQUIREMENTS. We expect to meet our short-term liquidity
requirements through net cash provided by operations, additional debt financings
and/or joint ventures, and refinancings of maturing debt. We expect to meet our
long-term liquidity requirements for the funding of property development,
property acquisitions, tenant improvements and other non-recurring capital
improvements through a combination of net cash from operations, long-term
secured and unsecured indebtedness (including our credit facilities), joint
ventures, property sales and the issuance of additional equity and debt
securities. There can be no assurance that we


                                       36
<PAGE>

HISTORICAL CASH FLOWS

will be successful in obtaining the required amount of funds for these items or
that the terms of capital raising activities, if any, will be as favorable as we
have experienced in prior periods. The terms of the credit facilities and our
preferred shares impose restrictions on our ability to incur indebtedness and
issue additional preferred shares.

         Historically, we have generated positive cash flows from operations to
fund distributions to our shareholders and have funded our expansion primarily
through equity offerings and mortgage debt financing. Historically, our
predecessor's principal sources of funding for operations and capital
expenditures were from mortgage debt financing.

         We had consolidated net cash provided by operating activities of $105.1
million and $53.5 million for the years ended December 31, 1999 and 1998,
respectively. We and our predecessor had consolidated and combined net cash
provided by operating activities of $2.5 million for the year ended December 31,
1997. The $51.6 million increase in net cash provided by operating activities
for the year ended December 31, 1999 from the year ended December 31, 1998 was
primarily due to a $34.6 million increase in net income, a $7.8 million increase
in depreciation and amortization expense, a $0.6 million increase in loss on
land development option, a $3.3 million increase in the equity in loss of
unconsolidated investments, a $21.3 million increase in income allocated to
minority interests, a $39.9 million decrease in other assets, a $1.4 million
increase in accounts payable and accrued expenses, and a $9.3 million increase
in accrued real estate taxes, offset by a $53.1 million increase in gain on sale
of real estate, a $0.6 million increase in gain on treasury lock terminations, a
$0.2 million increase in extraordinary items, a $1.6 million increase in
interest income and development costs added to the mortgage note receivable
principal, a $1.5 million increase in tenant receivables, a $2.0 million
increase in deferred rent receivable, a $0.1 million increase in accrued
interest payable, a $0.2 million decrease in amortization of costs for leases
assumed, a $0.2 million decrease in liabilities for leases assumed and a $7.1
million decrease in other liabilities. The $51.0 million increase in net cash
provided by operating activities for the year ended December 31, 1998 from the
year ended December 31, 1997 was primarily due to a $67.2 million decrease in
extraordinary items, a $9.4 million increase in income allocated to minority
interests, a $11.7 million increase in depreciation and amortization, a $4.6
million increase in other liabilities, a $3.8 million increase in accrued real
estate taxes, a $2.5 million increase in accrued interest payable, and a $0.3
million decrease in gain of sale of real estate, offset by a $18.2 million
decrease in net income, a $11.9 million increase in other assets, a $9.8 million
decrease in interest added to principal on mortgage note payable affiliate, a
$3.4 million decrease in accounts payable and accrued expenses, a $2.5 million
increase in tenant receivables, a $1.9 million decrease in deferred rent
receivable, a $1.0 million increase in interest income and developer fees added
to mortgage note receivable principal and a $0.5 million decrease in standby
loan fee-affiliate added to principal on mortgage note payable affiliate.

         We had consolidated net cash used in investing activities of $437.3
million and $361.4 million for the years ended December 31, 1999 and 1998,
respectively. We and our predecessor had consolidated and combined net cash used
in investing activities of $357.8 million for the year ended December 31, 1997.
The $75.9 million increase in net cash used in investing activities for the year
ended December 31, 1999, from the year ended December 31, 1998, was primarily
due to a $282.3 million increase in expenditures for real estate and equipment,
principally related to property acquisitions and development, a $11.9 million
increase in advances on the mortgage note receivable and a $4.3 increase in
leasing costs, offset by a $154.3 million increase in proceeds from the sales of
real estate, a $62.4 million decrease in restricted cash escrows, a $4.6 million
net repayment of loans by the Services Company, and a $1.3 million distribution
received from an unconsolidated joint venture. The $3.6 million increase in net
cash


                                       37
<PAGE>

HISTORICAL CASH FLOWS (CONTINUED)

used in investing activities for the year ended December 31, 1998 from the year
ended December 31, 1997 was primarily due to a $46.2 million decrease in
advances on mortgage note receivable, a $1.6 million decrease in expenditures
for real estate and equipment, a $2.9 million decrease in due from affiliates
and a $0.4 million decrease in cash contributed to the Services Company,offset
by a $50.7 million increase in restricted cash escrows, a $1.3 million increase
in deferred leasing costs, a $3.4 million decrease in loans provided to the
Services Company and a $0.3 million decrease in proceeds from sale of real
estate.

         We had consolidated net cash provided by financing activities of $306.9
million and $342.4 million for the years ended December 31, 1999 and 1998,
respectively. We and our predecessor had consolidated and combined net cash
provided by financing activities of $361.7 million for the year ended December
31,1997. The $35.5 million decrease in net cash provided by financing activities
from the year ended December 31, 1999, from the year ended December 31, 1998,
was due to a $0.5 million increase in financing costs, a $1.0 million decrease
in contributions from minority interests, a $95.3 million decrease in net
proceeds from the sale of Series B preferred shares, a $45.9 million decrease in
net proceeds from a private placement and a $11.3 million increase in
distributions to preferred shareholders, common shareholders and minority
interests, a $0.4 million increase in preferred stock transaction fee, a $129.2
million increase in the repayment of mortgage notes payable, offset by a $32.4
million increase in proceeds from mortgage notes payable, a $29.9 million
increase in deposits recovered on treasury lock agreements, $178.5 million
increase in net proceeds from the credit facilities, and a $7.3 million decrease
in cash used to repurchase our common shares. The $19.3 million decrease in net
cash provided by financing activities for the year ended December 31, 1998 from
the year ended December 31, 1997 was primarily due to a $215.7 million net
decrease in the net proceeds from the sale of our preferred and common shares
and operating partnership units, a $7.3 million increase in cash used to
repurchase our common shares, a $43.3 million increase in the repayment of
mortgage notes payable and net repayment of credit facilities, a $35.2 million
increase in distributions to our preferred and common shareholders and the
operating partnership's minority interest unit holders, a $19.1 million increase
in financings costs, a $5.6 million decrease in proceeds from mortgage note
payable affiliates, and a $44.3 million decrease in contributions from
predecessor partners offset by a $305.4 million increase in proceeds from
mortgage notes payable and net proceeds from credit facilities, a $42.3 million
decrease in the repayment of mortgage notes payable from affiliates, a $0.7
million decrease in due from affiliates, a $1.0 million contribution from
minority interest - other and a $1.7 million decrease in debt termination fees.

FUNDS FROM OPERATIONS

         Industry analysts generally consider Funds from Operations, as defined
by NAREIT, an alternative measure of performance of an equity REIT. Funds from
Operations is defined by NAREIT to mean net income (loss) determined in
accordance with GAAP, excluding gains (or losses) from debt restructuring and
sales of property, plus depreciation and amortization (other than amortization
of deferred financing costs and depreciation of non-real estate assets) and
after adjustment for unconsolidated partnerships and joint ventures. We believe
that in order to facilitate a clear understanding of our consolidated historical
operating results and the Predecessor's combined historical operating results,
Funds from Operations should be examined in conjunction with net income (loss)
as presented in audited consolidated and combined financial statements and
selected financial data included elsewhere in this Form 10-K. We compute Funds
from Operations


                                       38
<PAGE>

FUNDS FROM OPERATIONS (CONTINUED)

in accordance with standards established by the Board of Governors of NAREIT in
its March 1995 White Paper (with the exception that we report rental revenues on
a cash basis (based on contractual lease terms), rather than a straight-line
GAAP basis, which we believe results in a more accurate presentation of our
actual operating activities), which may differ from the methodology for
calculating Funds from Operations used by other REITs and, accordingly, may not
be comparable to such other REITs. As a result of our reporting rental revenues
on a cash basis for Funds from Operations, contractual rent increases will cause
reported Funds from Operations to increase. Further, Funds from Operations does
not represent amounts available for management's discretionary use because of
needed capital replacement or expansion, debt repayment obligations, or other
commitments and uncertainties. Funds from Operations should not be considered as
an alternative to net income (loss), as an indication of our performance or to
cash flows as a measure of liquidity or the ability to pay dividends or make
distributions.


                                       39
<PAGE>

         The following is our consolidated quarterly summary of Funds From
Operations.

<TABLE>
<CAPTION>

                                                               YEAR ENDED DECEMBER 31, 1999
                                            -----------------------------------------------------------------
                                                              FOURTH       THIRD       SECOND       FIRST
                                                  TOTAL       QUARTER     QUARTER      QUARTER     QUARTER
                                            -----------------------------------------------------------------
<S>                                          <C>           <C>         <C>          <C>           <C>
Net income allocated to common
   shareholders ...........................  $  42,745     $    1,470  $  31,238   $    7,025    $   3,012

FFO adjustments:

   Real estate depreciation and
     amortization (1) .....................     30,549          7,106      8,022        8,088        7,333

   Amortization of costs for leases
     assumed ..............................        899            163        245          246          245

   Straight-line rental revenue adjustments     (3,263)        (1,418)      (637)        (614)        (594)
   Joint venture adjustments ..............        654            654          -            -            -

   Gain on sales of real estate ...........    (52,706)          (224)   (48,125)      (4,357)           -
   Adjustment associated with Services
     Company ..............................      2,783          2,783           -           -            -

   Net (gain) loss on Treasury Lock
     terminations .........................       (615)             -           -      (1,172)         557

   Loss on land development options
     interests ............................        600              -          -            -          600

   Minority interests .....................     30,687          1,440     22,330        4,861        2,056

Extraordinary loss ........................      1,082            253        829            -            -
                                            -----------------------------------------------------------------
Funds from operations .....................  $  53,415     $   12,227  $  13,902    $  14,077    $  13,209
                                            =================================================================
Other data:

   Net cash provided by operating activities $ 105,092     $  39,612   $  27,867    $  16,195    $  21,418
   Net cash used in investing activities ...  (437,332)     (207,339)    (61,117)     (17,571)   (151,305)
   Net cash provided by financing activities   306,907       178,721      25,565        6,600       96,021

<CAPTION>

                                                                                                                       PERIOD FROM
                                                                  YEAR ENDED DECEMBER 31, 1998                         NOVEMBER 17,
                                             -----------------------------------------------------------------------      1997
                                                               FOURTH        THIRD        SECOND        FIRST          DECEMBER 31,
                                                   TOTAL      QUARTER       QUARTER       QUARTER       QUARTER           1997
                                             ---------------------------------------------------------------------------------------
<S>                                           <C>            <C>          <C>          <C>            <C>               <C>
Net income allocated to common
   shareholders ...........................   $  12,274      $   2,716    $   4,035    $    2,997     $    2,526        $    447

FFO adjustments:

   Real estate depreciation and
     amortization (1) .....................      23,964          7,009        6,106         5,834          5,015           2,215

   Amortization of costs for leases
     assumed ..............................       1,137            285          286           275            291             142

   Straight-line rental revenue adjustments      (1,234)          (181)        (531)         (494)           (28)            180

   Minority interests .....................       9,368          2,347        2,704         2,352          1,965             635

   Extraordinary loss .....................       1,253            728            -           525              -               -
                                             ---------------------------------------------------------------------------------------
Funds from operations .....................   $  46,762      $  12,904    $  12,600     $  11,489     $    9,769       $   3,619
                                             =======================================================================================
Other data:

   Net cash provided by (used in) operating
     activities ...........................   $  53,525      $    (133)   $  36,442     $   9,214     $    8,002       $   6,706
   Net cash used in investing activities ..    (361,384)       (25,803)     (68,245)      (91,645)      (175,691)       (353,864)
   Net cash provided by financing activities    342,390         64,298       26,774        86,011        165,307         355,390
- ------------------------------------------------------------------------------------------------------------------------------------

</TABLE>

(1)  Excludes the amortization of deferred financing costs and non-real estate
     related depreciation.


                                       40
<PAGE>

IMPACT OF RECENTLY ISSUED ACCOUNTING STANDARDS

         None

INFLATION

         Substantially all of our office and industrial leases require tenants
to pay, as additional rent, a portion of any increases in real estate taxes and
operating expenses over a base amount. In addition, many of the office and
industrial leases provide for fixed increases in base rent or indexed
escalations (based on the Consumer Price Index or other measures). We believe
that inflationary increases in expenses will be offset, in part, by the expense
reimbursements and contractual rent increases described above.

         As of December 31, 1999, approximately $469.6 million of our
outstanding indebtedness (including our Credit Facilities) was subject to
interest at floating rates. Future indebtedness may also be subject to floating
rate interest. The floating rate debt includes $160.0 million subject to an
interest rate swap agreement, which effectively results in a fixed rate of 8.0%,
and $65.0 million subject to an interest rate collar agreement, which
effectively results in a cap at 9.65% and a floor at 5.88%. Inflation, and its
impact on floating interest rates, could affect the amount of interest payments
due on such indebtedness.


                                       41
<PAGE>


ITEM 7A.     QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

         The following table provides information about our derivative financial
instruments and other financial instruments that are sensitive to changes in
interest rates. For our mortgage note receivable, mortgage notes payable, credit
facilities and bonds payable, the table presents principal cash flows and
related weighted-average interest rates by expected maturity dates. For interest
rate swaps and collars, the table represents notional amounts and
weighted-average interest rates by expected (contractual) maturity dates.
Notional amounts are used to calculate the contractual payments to be exchanged
under the contract. None of these instruments were entered into for trading
purposes.

                            INTEREST RATE SENSITIVITY
                PRINCIPAL (NOTIONAL) AMOUNT BY EXPECTED MATURITY
                              AVERAGE INTEREST RATE

<TABLE>
<CAPTION>

- -------------------------------------------------------------------------------------------------------------------------------
                                               2000        2001         2002       2003        2004      THEREAFTER    TOTAL
                                       ----------------------------------------------------------------------------------------
                                                                       (DOLLARS IN MILLIONS)
<S>                                          <C>         <C>         <C>          <C>        <C>         <C>          <C>
   ASSETS

   MORTGAGE NOTE RECEIVABLE (1):
   Fixed rate amount                             --          --           --         --      $   82.7         --      $    82.7
   Fixed interest rate                           --          --           --         --           9.64%       --           --

   LIABILITIES
   MORTGAGE NOTES PAYABLE (2):
   Fixed rate amount                         $   19.0    $   62.3    $     3.9    $   4.2    $    4.4    $   235.8    $   329.6
   Weighted-average interest rate (3)             9.69%       6.78%        7.32%      7.32%       7.32%        7.38%

   Variable rate                             $   67.3    $   48.3    $   246.0       --      $   14.0         --      $   375.6
   Weighted-average interest rate (3)             8.56%       8.68%        8.32%                  9.50%       --

   CREDIT FACILITIES(2):
   Variable rate amount                      $   19.5        --           --         --          --           --      $    19.5
   Weighted-average interest rate (3)             8.24%                   --         --          --           --

   BONDS PAYABLE (2):
   Variable rate amount                          --          --      $    48.2       --          --      $    26.3    $    74.5
   Weighted-average interest rate (3)                        --            5.67%     --          --            4.55%

   INTEREST  RATE  SWAP  AGREEMENT (2)(3):
   Notional amount                           $    1.6    $    3.2    $   155.2       --          --           --      $   160.0
   Pay rate                                       6.46%       6.46%        6.46%                 --           --
   Fixed swap rate                                6.30%       6.30%        6.30%                 --           --

   INTEREST RATE COLLAR  AGREEMENTS (2)(3):

   Notional amount                               --          --      $    65.0       --          --           --      $    65.0
   Pay rate                                                  --            6.48%     --          --           --
   Cap rate                                                  --            7.50%     --          --           --
   Floor rate                                                --            3.73%     --          --           --
- -------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1)    See Note 2 to our consolidated financial statements for additional
       information.

(2)    See Note 4 to our consolidated financial statements for additional
       information.

(3)    Based upon the rates in effect at December 31, 1999. The weighted-average
       interest rates, including the interest rate swap and collar agreements,
       on our mortgage notes payable, credit facilities and bonds payable at
       December 31, 1999 were 7.91%, 8.24% and 5.27%, respectively.
       Additionally, the bonds payable of $48.2 million and $26.3 million are
       collateralized by letters of credit of $48.8 million and $26.9 million,
       respectively, incurring annual fees of 1.65% and 2.25%, respectively. If
       interest rates on our variable rate debt increased by one percentage
       point, our annual interest incurred (including the effects of the
       interest rate protection agreements) would increase by $3.1 million.


                                       42
<PAGE>

ITEM 8.      FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

         The financial statements and supplementary data required by Regulation
S-X are included in this Report on Form 10-K commencing on page F-1.

ITEM 9.      CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
             FINANCIAL DISCLOSURE

         Not applicable


                                       43
<PAGE>

                                    PART III

         Certain information required by Part III is omitted from this Report as
we will file a definitive proxy statement within 120 days after the end of our
fiscal year pursuant to Regulation 14A for our Annual Meeting of Shareholders to
be held on May 17, 2000 (the "Proxy Statement") and the information included
therein is incorporated herein by reference.

ITEM 10.     DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

         The information contained in the section captioned "Election of
Trustees" of the Proxy Statement is incorporated herein by reference.

ITEM 11.     EXECUTIVE COMPENSATION

         The information contained in the sections captioned and "Executive
Officers" of the Proxy Statement is incorporated herein by reference.

ITEM 12.     SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

         The information contained in the section captioned "Principal Security
Holders of the Company" of the Proxy Statement is incorporated herein by
reference.

ITEM 13.     CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

         The information contained in the section captioned "Other Information
Certain Relationships and Related Transactions" of the Proxy Statement is
incorporated herein by reference.


                                       44
<PAGE>

                                     PART IV

ITEM 14.     EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a)      1.  Financial Statements

Prime Group Realty Trust and the Predecessor:

<TABLE>

<S>                                                                                                       <C>
Report of Independent Auditors.........................................................................   F-2

Consolidated Balance Sheets of Prime Group Realty Trust as of
   December 31, 1999 and 1998..........................................................................   F-3

Consolidated Statements of Operations of Prime Group Realty Trust for the years ended December 31,
   1999 and 1998 and for the period from November 17, 1997 through December 31, 1997 and Combined
   Statement of Operations of the Predecessor for the period from January 1, 1997 through November 16,
   1997................................................................................................   F-4

Consolidated Statements of Changes in Shareholders' Equity of Prime Group Realty
   Trust for the years ended December 31, 1999 and 1998 and for the period from
   November 17, 1997 to December 31, 1997..............................................................   F-6

Combined Statement of Changes in Predecessors' Deficit for the period from
   January 1, 1997 through November 16, 1997...........................................................   F-7

Consolidated Statements of Cash Flows of Prime Group Realty Trust for the years ended December 31,
   1999 and 1998 and for the period from November 17, 1997 through December 31, 1997 and the Combined
   Statement of Cash Flows of the Predecessor for the period from January 1, 1997 through November 16,
   1997................................................................................................   F-8

Notes to Consolidated and Combined Financial Statements................................................   F-12

        (2)  Financial Statement Schedule

            The following financial statement schedule is included in Item 14(d)

              Report of Independent Auditors on Schedule (included with consent filed
              as Exhibit 23.1)

              Schedule III - Real Estate and Accumulated Depreciation of Prime Group
              Realty Trust as of December 31, 1999......................................................    F-40

</TABLE>

         All other schedules for which provision is made in the applicable
accounting regulation of the Securities Exchange Commission are not required
under the related instructions or are inapplicable, and therefore have been
omitted.


                                       45
<PAGE>

     (3)    Exhibits

<TABLE>
<CAPTION>

 EXHIBIT
 -------
   NO.                                 DESCRIPTION
   ---                                 -----------
<S>         <C>
   3.1      Articles of Amendment and Restatement of Declaration of Trust of
            Prime Group Realty Trust as filed as an exhibit to our 1997 Annual
            Report on Form 10-4 and incorporated herein by reference.

   3.2      Articles Supplementary to the Articles of Amendment and Restatement
            of Declaration of Trust of Prime Group Realty Trust as filed as an
            exhibit to our Quarterly Report on Form 10-Q for the quarter ended
            June 30, 1998 and incorporated herein by reference.

   3.3      Articles Supplementary to the Articles of Amendment and Restatement
            of Declaration of Trust of Prime Group Realty Trust date as of
            December 29, 1998 as filed as an exhibit to our 1998 Annual Report
            on Form 10-K and incorporated by reference

   3.4      Amended and Restated Bylaws of Prime Group Realty Trust as filed as
            an exhibit to our 1997 Annual Report on Form 10-K and incorporated
            herein by reference.

   3.5      Amended and Restated Agreement of Limited Partnership of Prime Group
            Realty, L.P. (the "Amended and Restated Agreement of Limited
            Partnership") as filed as an exhibit to our 1997 Annual Report on
            Form 10-K and incorporated herein by reference

   3.6      Amendment No. 1 to the Amended and Restated Agreement of Limited
            Partnership dated as of December 15, 1997 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.7      Amendment No. 2 to the Amended and Restated Agreement of Limited
            Partnership dated as of December 15, 1997 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.8      Amendment No. 3 to the Amended and Restated Agreement of Limited
            Partnership dated as of January 15, 1998 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.9      Amendment No. 4 to the Amended and Restated Agreement of Limited
            Partnership dated as of February 13, 1998 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.10     Amendment No. 5 to the Amended and Restated Agreement of Limited
            Partnership dated as of March 13, 1998 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.11     Amendment No. 6 to the Amended and Restated Agreement of Limited
            Partnership dated as of March 25, 1998 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.12     Amendment No. 7 to the Amended and Restated Agreement of Limited
            Partnership dated as of April 15, 1998 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.13     Amendment No. 8 to the Amended and Restated Agreement of Limited
            Partnership dated as of May 15, 1998 as filed as an exhibit to
            Amendment No. 2 to our Registration Statement on Form S-11 (No.
            333-51599) and incorporated herein by reference

   3.14     Amendment No. 9 to the Amended and Restated Agreement of Limited
            Partnership dated as of June 5, 1998 as filed as an exhibit to our
            Quarterly Report on Form 10-Q for the quarter ended June 30, 1998
            and incorporated herein by reference.

</TABLE>

                                       46
<PAGE>

     (3)    EXHIBITS

<TABLE>
<CAPTION>

 EXHIBIT
 -------
   NO.                                 DESCRIPTION
   ---                                 -----------
<S>         <C>
   3.15     Amendment No. 10 to the Amended and Restated Agreement of Limited
            Partnership dated as of June 15, 1998 as filed as an exhibit to our
            Quarterly Report on Form 10-Q for the quarter ended June 30, 1998
            and incorporated herein by reference.

   3.16     Amendment No. 11 to the Amended and Restated Agreement of Limited
            Partnership dated as of July 15, 1998 as filed as an exhibit to
            Post-Effective Amendment No. 1 to our Registration Statement on Form
            S-11 (No. 333-51935) and incorporated herein by reference.

   3.17     Amendment No. 12 to the Amended and Restated Agreement of Limited
            Partnership dated as of August 14, 1998 as filed as an exhibit to
            Post-Effective Amendment No. 1 to our Registration Statement on Form
            S-11 (No. 333-51935) and incorporated herein by reference

   3.18     Amendment No. 13 to the Amended and Restated Agreement of Limited
            Partnership dated as of September 15, 1998 as filed as an exhibit to
            Amendment No. 1 to Post-Effective Amendment No. 1 to our
            Registration Statement on Form S-11 (No. 333-51935) and incorporated
            herein by reference

   3.19     Amendment No. 14 to the Amended and Restated Agreement of Limited
            Partnership dated as of October 15, 1998 as filed as an exhibit to
            Amendment No. 2 to our Registration Statement on Form S-3 (No.
            333-64973) and incorporated herein by reference

   3.20     Amendment No. 15 to the Amended and Restated Agreement of Limited
            Partnership dated as of November 16, 1998 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-3 (No.
            333-64973) and incorporated herein by reference

   3.21     Amendment No. 16 to the Amended and Restated Agreement of Limited
            Partnership dated as of December 15, 1998 as filed as an exhibit to
            Post-Effective Amendment No. 3 to our Registration Statement on Form
            S-3 (Registration No. 333-51935) and incorporated herein by
            reference

   3.22     Amendment No. 17 to the Amended and Restated Agreement of Limited
            Partnership dated as of January 15, 1999 as filed as an exhibit to
            our Quarterly Report on Form 10-Q for the quarter ended March 31,
            1999 and incorporated herein by reference

   3.23     Amendment No. 18 to the Amended and Restated Agreement of Limited
            Partnership dated as of February 15, 1999 as filed as an exhibit to
            our Quarterly Report on Form 10-Q for the quarter ended March 31,
            1999 and incorporated herein by reference

   3.24     Amendment No. 19 to the Amended and Restated Agreement of Limited
            Partnership dated as of March 15, 1999 as filed as an exhibit to our
            Quarterly Report on Form 10-Q for the quarter ended March 31, 1999
            and incorporated herein by reference

   3.26     Amendment No. 21 to the Amended and Restated Agreement of Limited
            Partnership dated as of April 15, 1999 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-3 (No.
            333-70369) and incorporated herein by reference

   3.27     Amendment No. 22 to the Amended and Restated Agreement of Limited
            Partnership dated as of April 22, 1999 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-3 (No.
            333-70369) and incorporated herein by reference

   3.28     Amendment No. 23 to the Amended and Restated Agreement of Limited
            Partnership dated as of May 15, 1999 as filed as an exhibit to
            Amendment No. 1 to our Registration Statement on Form S-3 (No.
            333-70369) and incorporated herein by reference

   3.29     Amendment No. 24 to the Amended and Restated Agreement of Limited
            Partnership dated as of June 15, 1999 as filed as an exhibit to our
            Quarterly Report on Form 10-Q for the quarter ended June 30, 1999
            and incorporated herein by reference

</TABLE>

                                       47
<PAGE>

     (3)    Exhibits

<TABLE>
<CAPTION>

   EXHIBIT
   -------
   NO.                                 DESCRIPTION
   ---                                 -----------
<S>         <C>
   3.30     Amendment No. 25 to the Amended and Restated Agreement of Limited
            Partnership dated as of July 14, 1999 as filed as an exhibit to our
            Quarterly Report on Form 10-Q for the quarter ended September 30,
            1999 and incorporated herein by reference

   3.31     Amendment No. 26 to the Amended and Restated Agreement of Limited
            Partnership dated as of July 15, 1999 as filed as an exhibit to our
            Quarterly Report on Form 10-Q for the quarter ended September 30,
            1999 and incorporated herein by reference

   3.32     Amendment No. 27 to the Amended and Restated Agreement of Limited
            Partnership dated as of August 16, 1999 as filed as an exhibit to
            our Quarterly Report on Form 10-Q for the quarter ended September
            30, 1999 and incorporated herein by reference

   3.33     Amendment No. 28 to the Amended and Restated Agreement of Limited
            Partnership dated as of September 15, 1999 as filed as an exhibit to
            our Quarterly Report on Form 10-Q for the quarter ended September
            30, 1999 and incorporated herein by reference

   3.34     Amendment No. 29 to the Amended and Restated Agreement of Limited
            Partnership dated as of October 15, 1999

   3.35     Amendment No. 30 to the Amended and Restated Agreement of Limited
            Partnership dated as of November 15, 1999

   3.36     Amendment No. 31 to the Amended and Restated Agreement of Limited
            Partnership dated as of December 15, 1999

   3.37     Amendment No. 32 to the Amended and Restated Agreement of Limited
            Partnership dated as of December 30, 1999

   10.1     Loan Agreement, dated December 13, 1999, between 330 N. Wabash
            Avenue, L.L.C., Westdeutsche Immobilienbank and Merrill Lynch
            Mortgage Capital Inc.

   10.2     Promissory Note, dated December 13, 1999, from 330 N. Wabash
            Avenue, L.L.C. to Westdeutsche Immobilienbank

   10.3     Guaranty Agreement, dated December 13, 1999, between Prime Group
            Realty, L.P. and Westdeutsche Immobilienbank

   10.4     Seventh Amendment to the Credit Agreement, dated October 22, 1999,
            between Prime Group Realty, L.P., Prime Group Realty Trust and Bank
            Boston, N.A., CIBC Inc. and Prudential Securities Corporation

   10.5     Fourth Note Modification Agreement, dated November 5, 1999, between
            LaSalle Bank National Association and Prime Group Realty, L.P.

   10.6     Second Amendment to Second Amended and Restated Loan Agreement,
            dated November 5, 1999, between LaSalle Bank National Association,
            Prime Group Realty, L.P. and Prime Group Realty Trust

   12.1     Computation of ratios of earnings to combined fixed changes and
            preferred share distributions.

   21.1     Subsidiaries of the Registrant

   23.1     Consent of Independent Auditors

   27.1     Financial Data Schedule

</TABLE>

                                       48
<PAGE>

         (b) Reports on Form 8-K
         We filed the following reports on Form 8-K during the fourth quarter of
         1999:

         Form 8-K dated  September  30, 1999,  (filed on October 15, 1999;  File
         No.  001-13589) relating to the sale of a 50% interest in one property.
         The report  includes pro forma financial information.

         Form 8-K dated December 17, 1999, (filed on December 21, 1999; File No.
         001-13589) relating to the Board of Trustees' approval of the
         repurchase of up to $250.0 million of the our outstanding common and
         preferred shares.

         Form 8-K dated December 13, 1999 (filed on December 23, 1999; File No.
         001-13589) relating to purchase of one property. The report includes
         the financial statements of the property and pro forma financial
         information.



                                       49
<PAGE>

                                   SIGNATURES

                  Pursuant to the  requirements  of Section 13 or 15(d) of the
         Securities  Exchange  Act of 1934,  the  registrant  has duly caused
         this report to be signed on its behalf by the undersigned, thereunto
         duly authorized on March ____, 2000.

                                                PRIME GROUP REALTY TRUST

Dated: March ___, 2000                          ________________________
                                                    Richard S. Curto
                                                  PRESIDENT AND CHIEF
                                                   EXECUTIVE OFFICER

Dated: March ___, 2000                          ________________________
                                                    William M. Karnes
                                              EXECUTIVE VICE PRESIDENT AND
                                                 CHIEF FINANCIAL OFFICER

                  Pursuant to the requirements of the Securities Exchange Act of
          1934, this report has been signed below by the following persons on
          behalf of the  registrant  and in the capacities and on the dates
          indicated.

<TABLE>
<CAPTION>

            NAME                                      TITLE                                           DATE
            ----                                      -----                                           ----
<S>                              <C>                                                              <C>
- --------------------------------
 Michael W. Reschke              Chairman of the Board and Trustee                                March ___, 2000

- --------------------------------
 Richard S. Curto                President, Chief Executive Officer and Trustee                   March ___, 2000

- --------------------------------
 William M. Karnes               Executive Vice President and Chief Financial Officer             March ___, 2000

- --------------------------------
 Roy P. Rendino                  Senior Vice President - Finance and Chief Accounting Officer     March ___, 2000

- --------------------------------
 Stephen J. Nardi                Trustee                                                          March ___, 2000

- --------------------------------
 James R. Thompson               Trustee                                                          March ___, 2000

- --------------------------------
 Jacque M. Ducharme              Trustee                                                          March ___, 2000

- --------------------------------
 Christopher J. Nassetta         Trustee                                                          March ___, 2000

- --------------------------------
 Thomas J. Saylak                Trustee                                                          March ___, 2000

</TABLE>


                                       50
<PAGE>

                                   SIGNATURES

         Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized on March ____, 2000.

                                             PRIME GROUP REALTY TRUST

Dated: March ___, 2000

                                               /s/ RICHARD S. CURTO
                                               --------------------
                                                 Richard S. Curto
                                               PRESIDENT AND CHIEF
                                                EXECUTIVE OFFICER

Dated: March ___, 2000

                                               /s/ WILLIAM M. KARNES
                                               ---------------------
                                                 William M. Karnes
                                            EXECUTIVE VICE PRESIDENT AND
                                              CHIEF FINANCIAL OFFICER

         Pursuant to the requirements of the Securities Exchange Act of 1934,
this report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.

<TABLE>
<CAPTION>

             NAME                                       TITLE                                           DATE
             ----                                       -----                                           ----
<S>                                <C>                                                              <C>
 /s/ MICHAEL W. RESCHKE
- ----------------------------
 Michael W. Reschke                Chairman of the Board and Trustee                                March ___, 2000

 /s/ RICHARD S. CURTO
- ----------------------------
 Richard S. Curto                  President, Chief Executive Officer and Trustee                   March ___, 2000

 /s/ WILLIAM M. KARNES
- ----------------------------
 William M. Karnes                 Executive Vice President and Chief Financial Officer             March ___, 2000

 /s/ ROY P. RENDINO
- ----------------------------
 Roy P. Rendino                    Senior Vice President - Finance and Chief Accounting Officer     March ___, 2000

 /s/ STEPHEN J. NARDI
- ----------------------------
 Stephen J. Nardi                  Trustee                                                          March ___, 2000

 /s/ JAMES R. THOMPSON
- ----------------------------
 James R. Thompson                 Trustee                                                          March ___, 2000

 /s/ JACQUE M. DUCHARME
- ----------------------------
 Jacque M. Ducharme                Trustee                                                          March ___, 2000

 /s/ CHRISTOPHER J. NASSETTA
- ----------------------------
 Christopher J. Nassetta           Trustee                                                          March ___, 2000

 /s/ THOMAS J. SAYLAK
- ----------------------------
 Thomas J. Saylak                  Trustee                                                          March ___, 2000

</TABLE>

                                       51
<PAGE>

             INDEX TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS

Financial Statements

Prime Group Realty Trust and the Predecessor:

<TABLE>

<S>                                                                                                      <C>
Report of Independent Auditors.......................................................................... F-2

Consolidated Balance Sheets of Prime Group Realty Trust as of

December 31, 1999 and 1998.............................................................................. F-3

Consolidated Statements of Operations of Prime Group Realty Trust for the years ended
     December 31, 1999 and 1998 and for the period from November 17, 1997 through
     December 31, 1997 and Combined Statement of Operations of the Predecessor
     for the period from January 1, 1997 through November 16, 1997......................................  F-4

Consolidated Statements of Changes in Shareholders' Equity of Prime Group Realty
     Trust for the years ended December 31, 1999 and 1998 and for the period
     from November 17, 1997 to December 31, 1997........................................................  F-6

Combined Statement of Changes in Predecessors' Deficit for the period from
     January 1, 1997 through November 16, 1997..........................................................  F-7

Consolidated Statements of Cash Flows of Prime Group Realty Trust for the years ended
     December 31, 1999 and 1998 and for the period from November 17, 1997 through
     December 31, 1997 and the Combined Statement of Cash Flows of the Predecessor
     for the period from January 1, 1997 through November 16, 1997......................................  F-8

Notes to Consolidated and Combined Financial Statements.................................................  F-12


Financial Statement Schedule

Schedule III - Real Estate and Accumulated Depreciation of Prime Group Realty Trust
as of December 31, 1999.................................................................................  F-40

</TABLE>


                                      F-1
<PAGE>

                         REPORT OF INDEPENDENT AUDITORS

Board of Trustees
Prime Group Realty Trust

         We have audited the accompanying consolidated balance sheets of Prime
Group Realty Trust as of December 31, 1999 and 1998, and the related
consolidated statements of operations, shareholders' equity and cash flows for
the years ended December 31, 1999 and 1998 and for the period from November 17,
1997 (date of formation) through December 31, 1997. We have also audited the
accompanying combined statements of operations, changes in predecessor's
deficit, and cash flows of the Predecessor for the period from January 1, 1997
through November 16, 1997. These financial statements are the responsibility of
Prime Group Realty Trust's and Predecessor's management. Our responsibility is
to express an opinion on these financial statements based on our audits.

         We conducted our audits in accordance with auditing standards generally
accepted in the United States. Those standards require that we plan and perform
the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.

         In our opinion, the financial statements referred to above present
fairly, in all material respects, the consolidated financial position of Prime
Group Realty Trust at December 31, 1999 and 1998, and the consolidated results
of its operations and its cash flows for the years ended December 31, 1999 and
1998 and for the period from November 17, 1997 through December 31, 1997, and
the Predecessor's combined results of its operations and its cash flows for the
period from January 1, 1997 through November 16, 1997, in conformity with
accounting principles generally accepted in the United States.

                                                      /s/ ERNST & YOUNG LLP


Chicago, Illinois

MARCH 20, 2000


                                      F-2
<PAGE>

                            PRIME GROUP REALTY TRUST

                           CONSOLIDATED BALANCE SHEETS

              (DOLLARS IN THOUSANDS, EXCEPT FOR PER SHARE AMOUNTS)

<TABLE>
<CAPTION>

                                                                                                         December 31,
                                                                                                   1999                 1998
                                                                                          ------------------------------------------
<S>                                                                                            <C>                    <C>
Assets Real estate at cost:
   Land...............................................................................         $   183,295            $   139,505
   Building and improvements..........................................................             928,567                655,154
   Tenant improvements  ..............................................................              39,232                 48,372
                                                                                          ------------------------------------------
                                                                                                 1,151,094                843,031
Accumulated depreciation..............................................................             (37,977)               (24,756)
                                                                                          ------------------------------------------
                                                                                                 1,113,117                818,275
Property under development............................................................             125,724                 51,376
                                                                                          ------------------------------------------
                                                                                                 1,238,841                869,651
Mortgage note receivable..............................................................              82,687                 63,270
Cash and cash equivalents.............................................................              21,167                 46,500
Tenant receivables....................................................................              11,438                  7,288
Restricted cash escrows...............................................................              42,140                 53,820
Deferred rent receivable..............................................................               9,501                 39,062
Deferred costs - net..................................................................              26,901                 32,891
Other.................................................................................              11,500                 52,032
                                                                                          ==========================================
Total assets..........................................................................          $1,444,175             $1,164,514
                                                                                          ==========================================

Liabilities and shareholders' equity
Mortgage notes payable................................................................         $   705,194            $   518,718
Credit facilities.....................................................................              19,527                      -
Bonds payable.........................................................................              74,450                 74,450
Accrued interest payable..............................................................               3,508                  2,440
Accrued real estate taxes.............................................................              40,689                 29,657
Accounts payable and accrued expenses.................................................              36,133                 26,068
Liabilities for leases assumed........................................................               3,235                  4,792
Dividends payable.....................................................................               8,122                  8,080
Other.................................................................................              10,909                  4,523
                                                                                          ------------------------------------------
Total liabilities.....................................................................             901,767                668,728
Commitments and contingencies.........................................................                   -                      -
Minority interests:
   Operating partnership..............................................................             168,070                144,781
   Other..............................................................................               1,000                  1,000
Series A - Cumulative Convertible Preferred Shares, 2,000,000
   shares designated, issued and outstanding at December 31, 1999                                   39,703                      -
Shareholders' equity:
   Preferred Shares, $0.01 par value; 30,000,000 shares authorized:
       Series B - Cumulative Redeemable Preferred Shares, 4,000,000
         shares designated, issued and outstanding at December 31, 1999 and 1998......                  40                     40
     Series A - Cumulative Convertible Preferred Shares, 2,000,000
        shares designated, issued and outstanding at December 31, 1998................                   -                     20
  Common Shares: $0.01 par value; 100,000,000 shares
     authorized; 15,189,438 and 15,110,794 shares issued and
     outstanding at December 31, 1999 and 1998, respectively..........................                 152                    151
   Additional paid-in capital.........................................................             321,357                360,017
   Retained (distributions in excess of) earnings.....................................              12,086                (10,223)
                                                                                          ------------------------------------------
Total shareholders' equity............................................................             333,635                350,005
                                                                                          ==========================================
Total liabilities and shareholders' equity............................................          $1,444,175             $1,164,514
                                                                                          ==========================================

</TABLE>

                             See accompanying notes.


                                      F-3
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

    CONSOLIDATED AND COMBINED STATEMENTS OF OPERATIONS OF PRIME GROUP REALTY

          TRUST AND COMBINED STATEMENT OF OPERATIONS OF THE PREDECESSOR

              (DOLLARS IN THOUSANDS, EXCEPT FOR PER SHARE AMOUNTS)

<TABLE>
<CAPTION>

                                                                       PRIME GROUP REALTY TRUST                     PREDECESSOR
                                                     ----------------------------------------------------------  ------------------
                                                                                               Period from         Period from
                                                                                               November 17,        January 1,
                                                                                               1997 through       1997 through
                                                            Year ended December 31,            December 31,       November 16,
                                                            1999               1998               1997                 1997
                                                     ---------------------------------------------------------- -------------------
<S>                                                       <C>               <C>                     <C>                <C>
Revenue
Rental.............................................       $ 126,687         $  97,212              $ 7,293             $27,947
Tenant reimbursements..............................          50,171            37,545                2,041              12,490
Other property revenues............................          11,201             4,249                   87               1,229
Mortgage note interest.............................           6,926             5,866                  248                   -
Interest income and other..........................           1,569             2,729                  161                   -
                                                     ---------------------------------------------------------- -------------------
Total revenue......................................         196,554           147,601                9,830              41,666


Expenses
Property operations................................          44,446            29,598                2,213               8,622
Real estate taxes..................................          34,470            25,077                1,765               8,575
Depreciation and amortization......................          33,258            25,447                2,478              11,241
Interest...........................................          42,648            30,901                1,680              24,613
Interest - affiliates..............................               -                 -                    -               9,804
Loss on land development option....................             600                 -                    -                   -
General and administrative.........................           7,565             5,712                  267               2,414
Financing fees.....................................               -                 -                    -               1,180
Property and asset management fees -affiliates.....               -                 -                    -               1,348
Provision for environmental remediation costs......               -                 -                    -               3,205
                                                     ---------------------------------------------------------- -------------------
Total expenses.....................................         162,987           116,735                8,403              71,002
                                                     ---------------------------------------------------------- -------------------

Income (loss) before gain on sales of real estate,
   minority interests and extraordinary items......          33,567            30,866                1,427             (29,336)
Gain on sales of real estate.......................          53,050                 -                    -                 286
                                                     ---------------------------------------------------------- -------------------
Income (loss) before minority interests
   and extraordinary items.........................          86,617            30,866                1,427             (29,050)
Minority interests.................................         (30,687)           (9,368)                (635)                666
                                                     ---------------------------------------------------------- -------------------
Income (loss) before extraordinary items...........          55,930            21,498                  792             (28,384)
Extraordinary items: (loss) gain on extinguishment
   of debt, net of minority interests in the amount
   of $754, $878 and $1,127 for the years ended
   December 31, 1999 and 1998, and for the period
   from January 1, 1997 through November 16,
   1997, respectively .............................          (1,082)           (1,253)                   -              65,990
                                                     ---------------------------------------------------------- -------------------
Net income.........................................          54,848            20,245                  792             $37,606
                                                                                                                ===================
Net income allocated to preferred
   shareholders....................................         (12,103)           (7,971)                (345)
                                                     ----------------------------------------------------------
Net income available to common
   shareholders....................................       $  42,745         $  12,274              $   447
                                                     ==========================================================

</TABLE>


                                      F-4

<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

           CONSOLIDATED STATEMENTS OF OPERATIONS OF PRIME GROUP REALTY

          TRUST AND COMBINED STATEMENT OF OPERATIONS OF THE PREDECESSOR

<TABLE>
<CAPTION>

                                                            PRIME GROUP REALTY TRUST
                                                            ------------------------
                                                                                               Period from
                                                                                               November 17,
                                                                                               1997 through
                                                            Year ended December 31,            December 31,
                                                            1999               1998               1997
                                                     ----------------------------------------------------------
<S>                                                       <C>               <C>                    <C>
Basic earnings available to common
   shares per weighted-average common share:
Income before gain on sales of real estate and
   extraordinary items.............................       $    0.84         $     0.91             $   0.04
Gain on sales of real estate, net of minority                  2.05                  -                    -
   interests.......................................
Extraordinary loss on extinguishment of debt, net of
   minority interests..............................           (0.07)             (0.08)                   -
                                                     ----------------------------------------------------------
Net income available per weighted-average common
   share of beneficial interest - basic............       $    2.82         $     0.83             $   0.04
                                                     ==========================================================

Diluted earnings available to common shares
   per weighted-average common share:
Income before gain on sales of real estate and
   extraordinary items.............................        $    0.84        $     0.91             $   0.04
Gain on sales of real estate, net of minority                   2.04                 -                    -
   interests.......................................
Extraordinary loss on extinguishment of debt, net of
   minority interests..............................            (0.07)            (0.08)                   -
                                                     ----------------------------------------------------------
Net income available per weighted-average common
   share of beneficial interest - diluted..........        $    2.81        $     0.83             $   0.04
                                                     ==========================================================

</TABLE>

                             See accompanying notes.


                                      F-5
<PAGE>

                            PRIME GROUP REALTY TRUST

           CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
                 FOR THE YEARS ENDED DECEMBER 31, 1999 AND 1998
       AND FOR THE PERIOD FROM NOVEMBER 17, 1997 THROUGH DECEMBER 31, 1997

         (DOLLARS IN THOUSANDS, EXCEPT FOR SHARE AND PER SHARE AMOUNTS)

<TABLE>
<CAPTION>

                                                                                            ADDITIONAL    DISTRIBUTIONS
                                                         PREFERRED SHARES       COMMON       PAID-IN       IN EXCESS OF
                                                         ----------------       ------
                                                      SERIES B    SERIES A      SHARES       CAPITAL         EARNINGS      TOTAL
                                                      --------    --------      ------       -------         --------      -----
<S>                                                       <C>          <C>     <C>           <C>            <C>           <C>
Issuance of 2,000,000 Series A - preferred shares         $  -         $20     $    -        $ 39,580       $       -     $ 39,600
Issuance of 12,980,000 common shares............             -           -        130         232,222               -      232,352
Step-up in basis from the purchase of third-party
  owner's interest in predecessor...............             -           -          -           1,430               -        1,430
Reclassification of predecessor's minority interest          -           -          -          (6,564)              -       (6,564)
Reclassification of net deficit of
  predecessor...................................             -           -          -         (33,976)              -      (33,976)
Additional contribution by predecessor..........             -           -          -          11,873               -       11,873
Contribution of net liabilities to services company          -           -          -             380               -          380
Additional paid-in capital allocated to minority
  interest......................................             -           -          -         (19,313)              -      (19,313)
Net income......................................             -           -          -               -             792          792
Series A-preferred share dividends
  declared ($0.173 per share)...................             -           -          -               -            (345)        (345)
Common share dividends declared                                                     -
  ($0.166 per share)............................             -           -                          -          (2,160)      (2,160)
                                                      ------------------------------------------------------------------------------
Balance at December 31, 1997....................             -          20        130         225,632          (1,713)     224,069
Issuance of 2,579,994 common shares.............             -           -         26          45,904               -       45,930
Issuance of 4,000,000 Series B - preferred shares           40           -          -          95,285               -       95,325
Issuance of 25,000 common shares
  granted during the year.......................             -           -          -             458               -          458
Repurchase of 474,200 common shares.............             -           -         (5)         (7,262)              -       (7,267)
Net income......................................             -           -          -               -          20,245       20,245
Series B-preferred share dividends
  declared ($1.29 per share)....................             -           -          -               -          (5,141)      (5,141)
Series A-preferred share dividends
  declared ($1.42 per share)....................             -           -          -               -          (2,830)      (2,830)
Common share dividends declared
  ($1.35 per share).............................             -           -          -               -         (20,784)     (20,784)
                                                      ------------------------------------------------------------------------------
Balance at December 31, 1998....................            40          20        151         360,017         (10,223)     350,005
Amortization of restricted
  stock awards..................................             -           -          -             576               -          576
Net income......................................             -           -          -               -          54,848       54,848
Series B-preferred share dividends
  declared ($2.25 per share)....................             -           -          -               -          (9,000)      (9,000)
Series A-preferred share dividends
  declared ($1.50 per share)....................             -           -          -               -          (3,000)      (3,000)
Series A-preferred share amortized dividend.....             -           -          -               -            (103)        (103)
Common share dividends declared
  ($1.35 per share).............................             -           -          -               -         (20,436)     (20,436)
Reclassification of Series A-preferred shares to
   redeemable equity............................             -         (20)         -         (39,980)              -      (40,000)
Conversion of 53,611 common units to common shares
   (one for one)................................             -           -          1             744               -          745
                                                      ------------------------------------------------------------------------------
Balance at December 31, 1999....................           $40         $ -       $152        $321,357       $  12,086     $333,635
                                                      ==============================================================================

</TABLE>

                             See accompanying notes.


                                      F-6
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

             COMBINED STATEMENT OF CHANGES IN PREDECESSOR'S DEFICIT

              PERIOD FROM JANUARY 1, 1997 THROUGH NOVEMBER 16, 1997

                             (DOLLARS IN THOUSANDS)

<TABLE>

<S>                                                                           <C>
Balance at January 1, 1997...............................................     $  (115,792)
Contributions............................................................          44,330
Distributions............................................................            (120)
Net income...............................................................          37,606
                                                                             ---------------
Balance at November 16, 1997.............................................     $   (33,976)
                                                                             ===============

</TABLE>

                             See accompanying notes.



                                      F-7
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

        CONSOLIDATED STATEMENTS OF CASH FLOWS OF PRIME GROUP REALTY TRUST
             AND COMBINED STATEMENT OF CASH FLOWS OF THE PREDECESSOR

                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>

                                                                        PRIME GROUP REALTY TRUST                      PREDECESSOR
                                                                       --------------------------------------------- --------------
                                                                                                      Period from     Period from
                                                                                                      November 17,    January 1,
                                                                                                      1997 through    1997 through
                                                                           Year ended December 31,    December 31,    November 16,
                                                                             1999          1998           1997           1997
                                                                       --------------------------------------------- --------------
<S>                                                                       <C>             <C>       <C>                  <C>
Operating activities
Net income..........................................................      $   54,848      $20,245   $        792         $37,606
Adjustments to reconcile net income  to net cash provided
   by (used in) operating activities:
     Amortization of costs for leases assumed (included in rental
      revenue)......................................................             899        1,137            142           1,022
     Interest income and developer fees added to mortgage note
      receivable principal..........................................          (2,580)      (1,010)             -               -
     Gain on sales of real estate...................................         (53,050)           -              -            (286)
     Depreciation and amortization..................................          33,258       25,447          2,478          11,241
     Interest added to principal on mortgage note payable affiliate.               -            -              -           9,772
     Standby loan fee-affiliate added to principal on mortgage
      note payable affiliate........................................               -            -              -             460
     Net gain on treasury lock terminations.........................            (615)           -              -               -
     Loss on land development option................................             600            -              -               -
     Net equity in loss of unconsolidated investments...............           3,609          274              -               -
     Minority interests.............................................          30,687        9,368            635            (666)
     Extraordinary items, net of minority interest..................           1,082        1,253              -         (65,990)
     Changes in operating assets and liabilities:
       Increase  in tenant receivables..............................          (4,988)      (3,468)           (15)           (916)
       (Increase) decrease in deferred rent receivable..............          (3,263)      (1,234)           180             487
       Decrease (increase) in other assets..........................          18,435      (21,458)       (10,032)            506
       Increase (decrease) in accrued interest payable..............           1,068        1,195           (175)         (1,118)
       Increase in accrued real estate taxes........................          21,049       11,742          7,556             415
       Increase in accounts payable and accrued expenses............           8,702        7,299          7,202           3,498
       Decrease in liabilities for leases assumed...................          (1,204)        (966)          (350)         (1,049)
       (Decrease) increase in other liabilities.....................          (3,445)       3,701         (1,707)            777
                                                                       --------------------------------------------- --------------
Net cash provided by (used in) operating activities.................         105,092       53,525          6,706          (4,241)

</TABLE>

                             See accompanying notes.


                                      F-8
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

        CONSOLIDATED STATEMENTS OF CASH FLOWS OF PRIME GROUP REALTY TRUST
       AND COMBINED STATEMENT OF CASH FLOWS OF THE PREDECESSOR (CONTINUED)

                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>

                                                                                 PRIME GROUP REALTY TRUST              PREDECESSOR
                                                                       -------------------------------------------------------------
                                                                                                       Period from     Period from
                                                                                                      November 17,      January 1,
                                                                                                      1997 through     1997 through
                                                                          Year ended December 31,     December 31,     November 16,
                                                                            1999           1998           1997            1997
                                                                       -------------------------------------------------------------
<S>                                                                        <C>           <C>            <C>              <C>
INVESTING ACTIVITIES
Expenditures for real estate and equipment..........................       $(583,454)    $(301,068)     $(297,019)       $ (5,659)
Proceeds from sales of real estate..................................         154,309             -              -             298
Purchase of and additional advances on mortgage note receivable.....         (16,837)       (4,943)       (51,163)              -
Decrease (increase) in restricted cash escrows......................          11,680       (50,736)             -               -
Leasing costs.......................................................          (7,106)       (2,840)           (48)         (1,459)
Net repayments from (loans provided to) services company............           2,801        (1,797)        (5,258)              -
Distribution from unconsolidated joint venture......................           1,275             -              -               -
Cash contributed to services company................................               -             -           (376)              -
Decrease in due from affiliates.....................................               -             -              -           2,894
                                                                       -------------------------------------------------------------
Net cash used in investing activities...............................        (437,332)     (361,384)      (353,864)         (3,926)

FINANCING ACTIVITIES
Net proceeds from the sale of preferred shares......................               -        95,325         39,600               -
Net proceeds from the sale of common shares.........................               -        45,930        232,352               -
Common share repurchases............................................               -        (7,267)             -               -
Proceeds from sale of operating partnership units...................               -             -         85,000               -
Financing costs.....................................................          (8,306)       (7,785)        (3,328)              -
Deposits returned (made)  under treasury lock agreements............          15,256       (14,641)             -               -
Proceeds from mortgage notes payable................................         546,538       514,065         84,198             480
Proceeds from mortgage notes payable - affiliates...................               -             -              -           5,647
Net proceeds (repayment of) from credit facilities..................          19,527      (159,000)       159,000               -
Repayment of mortgage notes payable.................................        (219,163)      (85,957)      (236,537)           (119)
Repayment of mortgage notes payable - affiliates....................               -        (3,984)        (4,895)        (41,367)
Decrease in due to affiliates.......................................               -             -              -            (708)
Contribution from minority interests - other........................               -         1,000              -               -
Distributions to minority interest - operating partnership..........         (14,151)      (12,116)             -            (120)
Series A - preferred shares transaction fee.........................            (400)            -              -               -
Dividends paid to Series B - preferred shareholders.................          (9,000)       (2,891)             -               -
Dividends paid to Series A - preferred shareholders.................          (2,980)       (2,445)             -               -
Dividends paid to common shareholders...............................         (20,414)      (17,844)             -               -
Contributions from partners.........................................               -             -              -          44,330
Distributions to partners...........................................               -             -              -            (120)
Debt termination fees...............................................               -             -              -          (1,692)
                                                                       -------------------------------------------------------------
Net cash provided by financing activities...........................         306,907       342,390        355,390           6,331
                                                                       -------------------------------------------------------------
Net (decrease) increase in cash and cash equivalents................         (25,333)       34,531          8,232          (1,836)
Cash and cash equivalents at beginning of period....................          46,500        11,969          3,737           5,573
                                                                       -------------------------------------------------------------
Cash and cash equivalents at end of period..........................       $  21,167     $  46,500     $   11,969        $  3,737
                                                                       =============================================================

</TABLE>

                             See accompanying notes.



                                      F-9
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

        CONSOLIDATED STATEMENTS OF CASH FLOWS OF PRIME GROUP REALTY TRUST
       AND COMBINED STATEMENT OF CASH FLOWS OF THE PREDECESSOR (CONTINUED)

                             (DOLLARS IN THOUSANDS)

During the year ended December 31, 1999, the Company sold the following assets
and liabilities:

<TABLE>

<S>                                                                                                                      <C>
   Real estate, net..............................................................................................        $ 261,255
   Tenant receivables, net.......................................................................................              838
   Deferred rent receivable......................................................................................           32,824
   Deferred costs, net...........................................................................................           13,318
   Mortgage notes payable........................................................................................         (205,109)
   Accrued real estate taxes.....................................................................................          (10,017)
   Other liabilities and assets, net.............................................................................            4,580
                                                                                                                     ---------------
   Net assets sold...............................................................................................           97,689
   Proceeds from sales of real estate............................................................................          154,309
                                                                                                                     ---------------
   Total gain on sales of real estate............................................................................           56,620
   Less gain deferred............................................................................................           (3,570)
                                                                                                                     ---------------
   Gain recognized on sales of real estate.......................................................................        $  53,050
                                                                                                                     ===============

   Supplemental disclosure of non-cash investing and financing activities:

   The following represents noncash activity for the years ended December 31, 1999
   and 1998:

<CAPTION>

                                                                                                          Year ended December 31,
                                                                                                             1999             1998
                                                                                                        ----------------------------
<S>                                                                                                      <C>           <C>
   Real estate additions through the assumption of mortgage payables................................     $ 140,899     $         -
   Real estate additions through the issuance of partnership units and common share grants..........         8,828           1,658
   Capital lease transaction........................................................................         1,250               -
   Accounts payable and accrued expenses for property under development.............................           989           4,060
   Accounts payable and accrued expenses for mortgage note receivable advances......................           374             806
                                                                                                        ----------------------------
                                                                                                         $ 152,340     $     6,524
                                                                                                        ============================

   Mortgage notes payable assumed...................................................................     $ 140,899     $         -
   Partnership units issued to minority interest....................................................         8,252           1,200
   Accounts payable and accrued expenses............................................................         1,363           4,866
   Capital lease mortgage note payable..............................................................         1,250               -
   Issuance of common share grants..................................................................           576             458
                                                                                                        ----------------------------
                                                                                                         $ 152,340     $     6,524
                                                                                                        ============================

</TABLE>


                                      F-10
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

        CONSOLIDATED STATEMENTS OF CASH FLOWS OF PRIME GROUP REALTY TRUST
       AND COMBINED STATEMENT OF CASH FLOWS OF THE PREDECESSOR (CONTINUED)

                             (DOLLARS IN THOUSANDS)

    The following assets and liabilities (Includes $12,000 of bonds receivable
    which have been netted against the corresponding bonds payable contributed
    by the Predecessor. Also includes cash of $376, net equipment of $83 and
    accounts payable of $839 which the Company immediately contributed to the
    Services Company.) were contributed by certain minority interest partners to
    the Company on November 17, 1997:

<TABLE>

<S>                                                                                                <C>
 Real estate, net...........................................................................       $ 243,637
 Cash and cash equivalents..................................................................           3,737
 Tenant receivable..........................................................................          41,813
 Deferred costs, net........................................................................          25,270
 Other assets...............................................................................             885
                                                                                               ----------------
 Total assets...............................................................................         315,342
                                                                                               ----------------

 Mortgage notes payable.....................................................................         241,432
 Bonds payable..............................................................................          74,450
 Accrued interest payable...................................................................           1,420
 Accrued real estate taxes..................................................................          10,359
 Accounts payable and accrued expenses......................................................           7,711
 Liabilities for leases assumed.............................................................           6,108
 Other liabilities..........................................................................           2,529
 Minority interests.........................................................................          (6,564)
                                                                                               ----------------
 Total liabilities and minority interests...................................................         337,445
                                                                                               ----------------
 Predecessor's net contribution.............................................................       $ (22,103)
                                                                                               ================


         The following represents our noncash activity during the period from
November 17, 1997 through December 31, 1997:

<CAPTION>

<S>                                                                                                <C>
Mortgage note receivable....................................................................       $   5,100
Real estate.................................................................................          48,814
                                                                                               ----------------
                                                                                                   $  53,914
                                                                                               ================

Debt assumed................................................................................       $  10,396
Partnership units issued to minority interest...............................................          42,088
Step-up in basis from purchase of third-party owner's interest in the Predecessor...........           1,430
                                                                                               ================
                                                                                                   $  53,914
                                                                                               ================

</TABLE>

                             See accompanying notes.


                                      F-11
<PAGE>

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

             NOTES TO CONSOLIDATED AND COMBINED FINANCIAL STATEMENTS

        (DOLLARS IN THOUSANDS, EXCEPT FOR PER SHARE AND PER UNIT AMOUNTS)

1.     SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

FORMATION AND ORGANIZATION OF THE COMPANY

         Prime Group Realty Trust (the "Company") was organized in Maryland on
July 21, 1997. The Company qualified as a real estate investment trust ("REIT")
beginning with the period ended December 31, 1997, under the Internal Revenue
Code of 1986, as amended, for Federal income tax purposes. On November 17, 1997,
the Company completed its initial public offering with the sale of 12,380,000 of
its common shares of beneficial interest at $20.00 per share and the private
placement of 2,000,000 of the Company's Series A-cumulative convertible
preferred shares of beneficial interest at $20.00 per share. The Company
contributed the initial net proceeds from the offering and private placement in
exchange for 12,380,000 common units of partnership interest and 2,000,000
preferred units of partnership interest in Prime Group Realty, L.P. (the
"Operating Partnership"). Subsequent to the initial public offering, the Company
issued an additional 3,204,994 of its common shares (sold 600,000 common shares
in 1997, sold 2,579,994 common shares in 1998 and granted 25,000 shares in 1998)
and 4,000,000 of its Series B-cumulative redeemable preferred shares and
contributed the net proceeds to the Operating Partnership in exchange for the
same number of common units and preferred units of partnership interest. In
addition, during 1998, the Company repurchased 474,200 of its common shares for
an aggregate purchase price of $7,267, pursuant to a common share repurchase
program the Company established in September 1998. On January 8, 1999, the
Company filed its initial shelf registration statement on Form S-3 with the
Securities and Exchange Commission (which was declared effective on June 8,
1999) to register up to $500,000 of its equity and debt securities for future
sale.

         The Company is the managing general partner of the Operating
Partnership and owns all of the preferred units and 58.4% and 59.4% of the
common units issued at December 31, 1999 and 1998, respectively. Each common
unit entitles the Company to receive distributions from the Operating
Partnership. Distributions declared or paid to holders of common shares and
preferred shares are based upon such distributions the Company receives with
respect to its common units and preferred units.

         In conjunction with the Company's initial contribution to the
Operating Partnership, The Prime Group, Inc. ("PGI") contributed its interest
in 23 partnerships that owned various office and industrial properties
(represents the Predecessor's operations) to the Operating Partnership in
exchange for 3,465,000 common units (PGI contributed 3,375,000 of these
common units to Primestone Investment Partners L.P. described below) and
received approximately $6,487 for the reimbursement of the Company's
formation costs advanced by PGI. The Operating Partnership was required to
acquire a third-party ownership interest in certain of the Predecessor's
properties for $1,797, resulting in a step-up in the basis of real estate of
$3,227. Certain other individuals contributed their ownership interests in
various properties, including the related debt, to the Operating Partnership
in exchange for cash of approximately $15,761 and 1,849,417 common units
valued at $20.00 per unit (total value of $36,988). In addition, Primestone
Investment Partners L.P. ("Primestone"), an entity in which PGI has a 60%
ownership interest,

                                      F-12
<PAGE>

1.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

acquired 4,569,893 common units from the Operating Partnership for $85,000 (PGI
directly or indirectly owns 31.7% and 31.4% of the Operating Partnership at
December 31, 1999 and 1998, respectively.) These properties (including the
Predecessor's properties), along with other acquired properties, are controlled
by the Operating Partnership. PGI, the other contributors and Primestone
have been reflected as Minority Interest - Operating Partnership in the
consolidated financial statements.

BASIS OF PRESENTATION

         The Company's consolidated financial statements include all of its
accounts, including the Operating Partnership and the other entities in which
the Company has control. The combined financial statements of the Predecessor
include the accounts of the partnerships in which the Predecessor had majority
interest, control or managed. The preparation of financial statements in
conformity with generally accepted accounting principles requires management to
make estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those estimates.

         Investments in corporations and partnerships in which the Company does
not have operational control or a majority interest are accounted for on the
equity method of accounting.

         Significant intercompany accounts and transactions have been eliminated
in consolidation and combination.

         Certain amounts in the prior period consolidated and combined financial
statements have been reclassified to conform to the current period presentation,
with no effect on the Company's consolidated or the Predecessor's combined
financial position or results of operations.

         On December 15, 1997, the Company acquired the first mortgage note
encumbering an office property known as Continental Towers for $108,870, with a
face value of $157,161. On May 15, 1998, the Company sold $75,000 of the note to
a third-party bank and the note became subordinate to the third-party note. The
note has a base interest rate of 6.5% per annum payable monthly, and a
contingent interest rate of 6.5% per annum, payable from available cash flow as
defined. All unpaid interest is added to principal. The note matures January
2013. The Company will receive all of the economic benefits from its interest in
the property and therefore, has consolidated the operations of the property from
the acquisition date.

         On November 17, 1997, the Operating Partnership acquired the assets and
business of two property management and realty services companies from a third
party and contributed these entities and certain other assets to a newly formed
corporation, Prime Group Realty Services, Inc. (the "Services Company"). In
exchange for its contribution, the Operating Partnership received 100% of the
non-voting preferred stock of the Services Company and a note receivable in the
amount of $4,800. Certain members of the Company's management own 100% of the
voting common stock. The Services Company was formed primarily to operate
certain business lines that are not directly associated with the collection of
rents. The Services Company is subject to federal, state and local taxes. The
Company records its ownership in the Services Company using the equity method of
accounting.


                                      F-13
<PAGE>

1.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

REAL ESTATE

         Depreciation is calculated on the straight-line method over the
estimated useful lives of assets, which are as follows:

<TABLE>

<S>                                               <C>
       Building and improvements                  40 years
       Tenant improvements                        Term of related leases
       Furniture and equipment                    3-7 years

</TABLE>

         Development costs, which include land acquisition costs, fees and other
costs incurred in developing new properties, are capitalized as incurred. Upon
completion of construction, development costs are included in buildings and
improvements and are depreciated over the useful lives of the respective
properties on a straight-line basis. Interest, financing costs and other direct
costs incurred during development periods are capitalized as a component of the
building costs.

         Real estate is carried at depreciated cost. Expenditures for ordinary
maintenance and repairs are expensed to operations as incurred. Significant
renovations and improvements which improve and/or extend the useful life of the
asset are capitalized and depreciated over their estimated useful life.

CASH EQUIVALENTS

         The Company considers highly liquid investments with a maturity of
three months or less when purchased to be cash equivalents.

DEFERRED COSTS

         Costs incurred in connection with financings, refinancings or debt
modifications are capitalized as deferred financing costs and are amortized on
the straight-line method over the lives of the related loans. Leasing
commissions and other leasing costs directly attributable to tenant leases are
capitalized as deferred leasing costs and are amortized on the straight-line
method over the terms of the related lease agreements.

LEASES ASSUMED

       In connection with certain tenant leases, the Company has assumed the
liability for the remaining terms of the tenants' existing leases in their
previous location. The Company has recorded a liability for the difference
between total remaining costs for leases assumed and the expected benefits from
subleases of the assumed lease properties. The related incentive to lessee has
been capitalized as a deferred charge and is being amortized to rental revenue
over the life of the respective lease. The deferred charge and related liability
are adjusted for changes in the expected benefits from subleases. During the
year ended December 31, 1998, the Company assumed additional liability of
$1,357. During the period from January 1, 1997 through November 16, 1997, the
Predecessor wrote off $1,049 of deferred charges and reduced the related
liability due to changes in the estimated benefits from subleases. No amounts
were written off during the years ended December 31, 1999 and 1998 or during the
period from November 17, 1997 through December 31, 1997.


                                      F-14
<PAGE>

1.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

RENTAL REVENUE

         Rental revenue is recorded on the straight-line method over the terms
of the related lease agreements for new leases and the remaining terms of
existing leases for acquired properties. Differences between rental revenue
earned and amounts due per the respective lease agreements are credited or
charged, as applicable, to deferred rent receivable. Rental payments received
prior to their recognition as income are classified as rent received in advance.

INTEREST RATE PROTECTION AGREEMENTS

         The Company from time to time enters into interest rate protection
agreements to effectively convert floating rate debt to a fixed rate basis,
provide for an interest rate cap or collar and hedge anticipated financing
transactions. Net amounts paid or received under these agreements are recognized
as an adjustment to interest expense when such amounts are incurred or earned.
Amounts payable or receivable from the counterparty are included in accrued
interest payable accounts or accounts receivable. Premiums paid for the
Company's interest rate protection agreements are included in deferred financing
costs and are amortized ratably over the term of the respective interest rate
protection agreement. Settlement amounts paid or received in connection with
terminated interest rate protection agreements are deferred and amortized over
the remaining term of the related financing transaction using the straight-line
method. The Company believes it has limited exposure to the extent of
non-performance by the counterparties of each protection agreement since each
counterparty is a major financial institution, and the Company does not
anticipate their non-performance. The fair value of the interest rate protection
agreements are not recognized in the financial statements as the agreements
qualify as hedges of the Company's interest rate risk. Interest rate protection
agreements or specific notional components thereof that do not qualify as a
hedge of the Company's interest rate risk would be recorded at fair value.

         In June 1998, the Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards ("SFAS") No. 133, "Accounting for
Derivative Instruments and Hedging Activities" ("Statement No. 133"). Statement
No. 133 requires recording all derivative instruments as assets or liabilities,
measured at fair value. Derivatives that are not hedges must be adjusted to fair
value through income. If the derivative is a hedge, depending on the nature of
the hedge, changes in the fair value of derivatives will either be offset
against the change in fair value of the hedged assets, liabilities, or firm
commitments through earnings or recognized in other comprehensive income until
the hedged item is recognized in earnings. The ineffective portion of a
derivative's change in fair value will be immediately recognized in earnings.
Statement No. 133 was originally to be effective for fiscal years beginning
after June 15, 1999 but was subsequently postponed to all fiscal years beginning
after June 15, 2000. The Company is planning to adopt Statement No. 133
effective January 1, 2001 and does not anticipate that the adoption will have a
material impact on the Company's financial condition and results of operations.

EARNINGS PER SHARE

         Basic earnings per share ("EPS") is calculated by dividing net income
available to common shareholders by the weighted average number of shares
outstanding during the period. Diluted EPS includes the potentially dilutive
effect, if any, which would occur if outstanding (i) common stock options were
exercised, (ii) common units were converted into shares of common share, (iii)
share grants were fully-vested, and (iv) convertible preferred shares were
converted into common shares.


                                      F-15
<PAGE>

1.       SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

STOCK BASED COMPENSATION

         The Company accounts for share option grants in accordance with
Accounting Principles Board Opinion No. 25, "Accounting for Stock Issued to
Employees" ("APB 25"). Under APB 25, no compensation expense is recognized for
the share option grants because the exercise price of the options equals the
market price of the underlying shares at the date of grant.

INCOME TAXES

         Commencing with the period ended December 31, 1997, the Company elected
to be taxed as a REIT under the Internal Revenue Code of 1986, as amended. As a
REIT, the Company generally will not be subject to federal income tax to the
extent that it distributes at least 95% of its REIT taxable income to its
shareholders. REITs are subject to a number of organizational and operational
requirements. If the Company fails to qualify as a REIT in any taxable year, the
Company will be subject to federal income tax (including any applicable
alternative minimum tax) on its taxable income at regular corporate tax rates.

         As of December 31, 1999, for income tax purposes, the Company's real
estate had a gross and net basis of $849,867 and $803,361, respectively,
mortgage notes receivable had a basis of $170,549, deferred costs had a gross
and net basis of $41,811and $27,438, respectively, and deferred rent receivable
had no tax basis.

         The Predecessor paid no income taxes, and the income or loss from its
partnerships is included on the respective income tax returns of the
Predecessor's partners.

2.     MORTGAGE NOTE RECEIVABLE

         On December 16, 1997, the Company acquired for approximately $51,163 in
cash and $5,100 in common units, the first mortgage note encumbering the office
property known as 180 North LaSalle Street. This 39-story office building is,
located in Chicago, Illinois contains 728,860 square feet of rentable space and
is approximately 58.0% leased at December 31, 1999. During 1999 and 1998, the
Company made additional advances of $17,146 and $4,943, respectively, which were
used to fund the redevelopment of the building and pay various operating
expenses. The Company anticipates providing additional advances of $2,654 to
complete the building's redevelopment. The note requires principal payments due
at maturity on January 15, 2004. The note has a face value of $89,573 and
$69,277 at December 31, 1999 and 1998, respectively.

       The note provides for interest at an accrual rate of 9.64% per annum, and
a minimum pay rate at the lower of 8.25% per annum, or $2,400 annually, as
defined, payable monthly. During 1999 and 1998, the Company received interest
income payments of $4,728 and $5,373, respectively. No payments were received
during the period from November 17, 1997 through December 31, 1997. During the
years ended December 31, 1999 and 1998 and the period from November 17, 1997
through December 31, 1997, $1,995, $258 and $248, respectively, of interest
income was added to the principal balance.

         Included in the purchase was a non-refundable option, exercisable until
July 30, 2000, to acquire the existing $85,000 second mortgage on the property
for $4,400 in common units of the Operating Partnership (amount included in
minority interest-operating partnership), valued at the lower of $20.00 per unit
or the Company's common share price at the date issued (5,000 common


                                      F-16
<PAGE>

2.       MORTGAGE NOTE RECEIVABLE  (CONTINUED)

units per month if the Company's common share market value is equal to or
greater than $20.00 per share or $100 in common units per month if the Company's
common share market value is below $20.00 per share; 80,442 and 67,018 common
units were issued during the years ended December 31, 1999 and 1998,
respectively), subject to certain adjustments, as defined. On November 15, 1999,
the holder of such common units redeemed 53,611 common units for 53,611 common
shares of the Company. At December 31, 1999 and 1998, $2,500 and $1,300,
respectively, is included in other assets related to the options. In addition,
the Company has an option to purchase the equity ownership of the property
during the period from January 15, 2004 to February 15, 2004 for a price equal
to the greater of the fair market value of the interest or $2,000.

         During 1999 and 1998, the Company provided construction management
services of $585 and $752, respectively, to the property, which have been added
to the principal balance. The Services Company provides property management and
leasing services for the property pursuant to a 10-year management and leasing
contract.

3.       DEFERRED COSTS

                  Deferred costs consist of the following:

<TABLE>
<CAPTION>

                                                                                      December 31,
                                                                   ---------------------------------------------------
                                                                              1999                     1998
                                                                   ---------------------------------------------------
<S>                                                                         <C>                       <C>
          Financing costs......................................             $  16,016                 $  12,161
          Leasing costs........................................                24,862                    40,132
                                                                   ---------------------------------------------------
                                                                               40,878                    52,293
          Less: Accumulated amortization.......................               (13,977)                  (19,402)
                                                                   ---------------------------------------------------
                                                                            $  26,901                 $  32,891
                                                                   ===================================================

</TABLE>


                                      F-17
<PAGE>

4.     MORTGAGE NOTES PAYABLE, CREDIT FACILITIES AND BONDS PAYABLE

         Mortgage notes payable, credit facilities and bonds payable consisted
of the following:

<TABLE>
<CAPTION>

                                                                                             DECEMBER 31,
                                                                                 -------------------------------------
                                                                                        1999              1998
                                                                                 -------------------------------------
<S>                                                                                   <C>               <C>
          Mortgage Notes Payable (A), (B):
             Mortgage notes payable to various financial institutions,
               collateralized by various properties, interest at fixed rates
               ranging from 6.75% to 11% per annum, with principal and interest
               payable through dates ranging from 2000 through 2013. The
               weighted average rate
               at December 31, 1999 was 7.4%.................................         $329,604          $282,618
             Mortgage notes payable to various financial institutions,
               collateralized by various properties, interest at variable rates
               ranging from LIBOR (5.82% at December 31, 1999) plus 165 basis
               points to LIBOR plus 450 basis points or Prime (8.5% at December
               31, 1999) plus 50 basis points per annum with principal and
               interest payable monthly through dates ranging from 2000 through
               2004. The weighted average rate at
               December 31, 1999 was 8.43%...................................          375,590           236,100
                                                                                 -------------------------------------
             Total mortgage notes payable....................................         $705,194          $518,718
                                                                                 =====================================
             Credit Facilities (A), (B):
             Line-of-credit with two financial institutions, collateralized by
               various properties with a maximum draw of $35,000, interest at
               rates of the higher of prime or federal funds rate plus 50 basis
               points or LIBOR plus 225 basis points, per annum, selected at the
               option of the Company with interest payable monthly and principal
               due November 2000 (D).........................................         $  7,527          $      -
             Line-of-credit with a financial institution, collateralized by an
               industrial property with a maximum draw of $12,000, interest at
               LIBOR plus 195 basis points, per annum, with interest payable
               monthly and principal due January 2000, with an option to extend
               the line for one year...........................................         12,000                 -
                                                                                 -------------------------------------
             Total credit facilities...........................................       $ 19,527          $      -
                                                                                 =====================================
             Bonds Payable:
             Variable rate taxable and tax-exempt bonds issued by various state
                and local government authorities (B), (C), (D)...............         $ 74,450          $ 74,450
                                                                                 =====================================

</TABLE>

(A)      The mortgage notes payable and credit facilities are subject to various
         operating and financial covenants. In addition, the Company is required
         to maintain escrow accounts to fund future real estate tax and other
         operating expense payments, which are included in restricted cash
         escrows.


                                      F-18
<PAGE>

4.       MORTGAGE NOTES PAYABLE, CREDIT FACILITIES AND BONDS PAYABLE (CONTINUED)

(B)      The majority of the Company's real estate assets and its mortgage note
         receivable have been pledged as collateral for its mortgage notes
         payable, credit facilities and bonds payable.

(C)      Permanent financing for the development of certain industrial
         properties has been provided by $48,150 of tax exempt industrial
         development revenue bonds that mature on February 16, 2022. On December
         13, 1995, and on May 20, 1996, the bonds were acquired by independent
         third party financial institutions from an affiliate of PGI.

         Under the terms of the bond loan agreements, the Company makes
         interest-only payments monthly, calculated using a floating rate
         determined by the remarketing agent of the bonds. The rates ranged from
         2.28% to 5.67% during 1999, 2.97% to 4.50% during 1998, and 3.35% to
         4.75% during 1997. The rate at December 31, 1999 was 5.67%. The maximum
         annual interest rate on the bonds is 13%. Under certain conditions, the
         interest rate on the bonds may be converted to a fixed rate at the
         Company's request.

         Beginning February 1998, the bonds were collateralized by letters of
         credit from a financial institution totaling $48,800 which expire
         February 2002 (the bonds become due on this date unless replacement
         collateral is obtained.) The letters of credit are collateralized by
         mortgages on the related industrial facilities and a $5,000 cash
         collateral account and have an annual fee of 1.65% of the letters of
         credit face amounts. From November 17, 1997 through February 1998, the
         bonds were collateralized by letters of credit totaling $48,000 from
         our $80,000 line-of-credit (subsequently reduced to $35,000). From May
         1996 to November 16, 1997, the bonds were collateralized by letters of
         credit that required the Predecessor to pay financing fees of 1.75% per
         annum of the face amount, payable quarterly in advance.

         The bondholders may tender bonds on any business day during the
         variable interest rate period discussed above and receive principal,
         plus accrued interest through the tender date. Upon tender, the
         remarketing agent will immediately remarket the bonds. In the event the
         remarketing agent fails to remarket any bonds, the Company is obligated
         to purchase those bonds. The remarketing agent receives a fee of 0.11%
         per annum of the outstanding bonds balance, payable quarterly in
         advance.

(D)      Permanent financing for the development of certain office properties
         has been provided by $26,300 of tax-exempt industrial revenue bonds.
         The bonds mature on December 1, 2014. Under the terms of the bond
         agreements, the Company makes interest-only payments monthly,
         calculated using a floating rate determined by the remarketing agent of
         the bonds. The rates ranged from 3.05% to 4.55% during 1999, 3.40% to
         4.00% during 1998 and 3.35% to 3.85% during 1997. The rate at December
         31, 1999 was 4.55%.

         Under certain conditions, the interest rates on the bonds may be
         converted to a fixed rate at the Company's request.

         The bonds are collateralized by letters of credit totaling $26,930 from
         our $35,000 line-of credit, which are subject to an annual fee of 2.25%
         of the amount outstanding.

         Under the terms of the bond agreements, the bondholders have the option
         to require the Company to purchase any of their bonds on the 15th day
         of any month while the bonds are outstanding. Upon the exercise of the
         bondholders' option to purchase the bonds, the remarketing agent will
         immediately remarket the bonds. In the event the remarketing agent
         fails to remarket the bonds, the Company is obligated to purchase those
         bonds. The remarketing agent receives a fee of 0.10% per annum of the
         outstanding bonds balance, payable quarterly in advance.


                                      F-19
<PAGE>

4.       MORTGAGE NOTES PAYABLE, CREDIT FACILITIES AND BONDS PAYABLE (CONTINUED)

         During the years ended December 31, 1999 and 1998, the Company
wrote-off deferred financing costs of $1,836 and $2,131, respectively, net of
accumulated amortization of $945 and $32, respectively. These write-offs
resulted from mortgage notes and bonds payable that were repaid or refinanced
and from the reduction in the maximum balance that can be drawn on the $35,000
line-of-credit (reduced from $235,000 to $80,000 during 1998 and from $80,000 to
$35,000 during 1999). The total of these write-offs has been reflected as an
extraordinary loss in the 1999 and 1998 statements of operations, net of
minority interests of $754 and $878, respectively.

         The Predecessor had entered into a mortgage note agreement with a
consortium of commercial lenders providing a maximum loan of $230,000
collateralized by a first mortgage on the 77 West Wacker Drive building. The
loan was repaid with proceeds from the initial public offering. Under the terms
of the loan, the Predecessor made monthly interest-only payments, calculated
using certain variable rate indices, as defined. To reduce the impact of
increases in interest rates, the Predecessor also entered into an interest rate
swap agreement with affiliates of one of 77 West Wacker Drive building's third
party owners (Counterparties) for the outstanding loan principal balance. Under
the terms of the interest rate swap agreement, the Predecessor paid the
Counterparties interest monthly at a fixed rate of 10% per annum. The
Predecessor was to receive monthly interest payments from the Counterparties at
the variable rate and was then responsible for making the monthly interest
payments required under the terms of the loan. The Predecessor incurred $692 of
fees to terminate the swap agreement, which have been reflected in the
extraordinary item extinguishment of debt in the period from January 1, 1997
through November 16, 1997.

         Total interest paid on the mortgage notes payable, credit facilities
and bonds payable was $49,566, $32,204, $1,855, and $25,731 for the years ended
December 31, 1999 and 1998, the period from November 17, 1997 through December
31, 1997, and the period from January 1, 1997 through November 16, 1997,
respectively. During the years ended December 31, 1999 and 1998, the Company
incurred interest expense of $50,634 and $33,399, respectively, of which $7,986
and $2,498, respectively, was capitalized related to development projects (no
interest was capitalized in the previous periods.)

         On August 21, 1998, the Company entered into two treasury lock
agreements with two financial institutions to lock certain debt instruments at
the interest rate on ten-year Treasury Notes effective on the date of the
agreements to provide interest rate protection on future debt financings. One of
these agreements was entered into in anticipation of a planned future
securitization of a $170,000 loan related to the 77 West Wacker Drive building,
and had a lock rate of 5.364%. The other agreement was entered into in
anticipation of $160,000 in debt related to the acquisition of IBM Plaza, had a
lock rate of 4.732% and was to expire on March 19, 1999. The Company made
deposits as required by the agreements, totaling approximately $14,641. The
deposits are exclusive of a $2,000 credit threshold described below. The
$170,000 agreement was to expire on February 18, 1999, but was extended to April
15, 1999. At that time, the lock rate was modified to 5.016% and the credit
threshold reduced from $2,000 to $500. On March 1, 1999, the Company terminated
the $160,000 treasury lock agreement due to the change in terms and timing of
the IBM Plaza purchase as a result of the amended purchase agreement.
Approximately $557 on deposit was forfeited at the time of termination. On May
11, 1999, the Company terminated the $170,000 treasury lock agreement due to
changes in timing of a planned future loan securitization related to the 77 West
Wacker Drive building. The termination resulted in a net settlement and gain
upon termination of $1,172. The net gain of $615 from the two terminations has
been included as a net gain in other income in the statement of operations for
the year ended December 31, 1999. During the period January 1, 1999 through


                                      F-20
<PAGE>

4.       MORTGAGE NOTES PAYABLE, CREDIT FACILITIES AND BONDS PAYABLE (CONTINUED)

May 11, 1999, the Company received net cash settlements of approximately $15,256
($7,094 related to the $170,000 agreement, and $8,162 related to the $160,000
agreement) related to both treasury lock agreements.

       On January 31, 1999, the Company entered into an interest rate collar
agreement that hedged the Company's interest rate exposure with respect to the
variable rate mortgage note secured by the 33 West Monroe property. The interest
rate ceiling under the agreement is based on a LIBOR index rate of 7.50% and the
interest rate floor is based on a LIBOR index rate of 3.73%. This agreement is
for an original notional amount of $65,000 and its term coincident with the
aforementioned variable rate mortgage note (January 31, 1999 through January 31,
2002).

       Under the provisions of one of the credit facilities, the Company is
obligated to maintain interest rate contracts on a portion of its variable rate
indebtedness. The Company entered into an interest rate cap agreement in July,
1999 with a financial institution for an original notional amount of $150,000 at
7.00% during the period from July 1 through October 1, 1999. On November 3,
1999, the Company entered into an interest rate collar agreement for the period
from November 1, 1999 through September 30, 2002 with a financial institution
for an original notional amount of $170,000. The interest rate ceiling under the
agreement is based on a LIBOR index rate of 7.75% and the interest rate floor is
based on a LIBOR index rate of 5.62%. This agreement satisfies the Company's
obligation to maintain interest rate contracts under the provisions of one of
its credit facilities. On November 22, 1999, the Company transferred the
$170,000 interest rate collar agreement to an unconsolidated investment
partnership. However, the Company has provided a guaranty to the counterparty
related to this agreement.

         On December 10, 1999, the Company entered into an interest rate swap
agreement based on a LIBOR index rate of 6.3% that effectively fixed the
Company's interest rate with respect to the variable rate mortgage note payable
secured by the IBM Plaza property at a rate of 8.0%. This agreement has an
original notional amount of $160,000 that decreases to $158,400 on December 10,
2000 and to $155,200 on December 10, 2001 coincident with principal payments on
the mortgage note payable secured by the IBM Plaza property. The swap agreement
had a purchase price of $591 which is being amortized over the term of the swap
agreement and terminates on December 10, 2002. No additional amounts were paid
or received under the terms of the swap agreement during 1999.

         On March 20, 2000, the Company entered into an interest rate cap
agreement for the period from March 20, 2000 through November 17, 2000 for a
notional amount of $70,000. The interest rate under the agreement is capped at a
LIBOR index rate of 8.0%.

         The above interest rate protection agreements satisfy the Company's
obligation to maintain interest rate contracts under the provisions of one of
the Company's credit facilities.

The following represents the Company's future minimum principal payments due on
its mortgage notes payable, credit facilities and bonds payable outstanding at
December 31, 1999:

<TABLE>
<CAPTION>

         YEAR ENDING DECEMBER 31                                AMOUNT
         --------------------------------------------------------------------
         <S>                                                     <C>
         2000..............................................      $105,807
         2001..............................................       110,699
         2002..............................................       297,986
         2003..............................................         4,146
         2004..............................................        18,425
         Thereafter........................................       262,108
                                                           ------------------
                                                                 $799,171
                                                           ==================

</TABLE>


                                      F-21
<PAGE>

5.     MORTGAGE NOTES AND BONDS PAYABLE-AFFILIATES

         On January 2, 1998, the Company repaid a 7.0% interest rate mortgage
note payable to a limited partner of $3,984. The note was collateralized by an
industrial property.

         The Predecessor had an 11% subordinate loan agreement with affiliates
of a former third party owner of the 77 West Wacker Drive building for a maximum
disbursement amount of $60,000. A portion of the loan was repaid ($4,895) with
proceeds of the initial public offering, and a portion was considered repaid
from the swap agreement between PGI and a third party related to the loan
described in Note 4 ($42,584 was recorded as a contribution from PGI in the
period from January 1, 1997 through November 17, 1997) and the remainder was
forgiven ($67,847), as of November 16, 1997 and included in the extraordinary
item-extinguishment of debt in the period from January 1, 1997 through November
16, 1997. The third party owner had provided a guarantee of 77 West Wacker Drive
building's first mortgage note payable and charged the Predecessor a standby
loan fee, as defined, which was included as a component of interest expense.
Standby loan fees incurred were $460 for the period from January 1, 1997 to
November 16, 1997 (unpaid interest expense is included in general and
administrative expenses in the Predecessor's combined statements of operations).
Under the terms of the subordinate loan agreement, the Predecessor was not
required to make any periodic principal or interest payments prior to the date
of stabilization, as defined; unpaid interest was added to the principal balance
monthly. Included in the extraordinary item-extinguishment of debt in the period
from January 1, 1997 through November 16, 1997 is $1,000 in loan termination
fees paid to an affiliate of the third party owner and the write-off of
unamortized deferred financing fees of $165.

         Permanent financing for the development of certain industrial
properties has been provided by $12,000 of taxable debt industrial development
revenue bonds and held by an affiliate of PGI. The bonds mature on June 1, 2022.
On November 17, 1997, PGI contributed the related bond receivables as part of
its capital contribution. The bonds payable and related receivable have been
eliminated in the Company's consolidated financial statements. The bonds have
the same terms as the bonds described in letter (C) of Note 4.

         Total interest paid on the mortgage notes payable and bonds payable to
affiliates was $33, and $32 for the year ended December 31, 1998, and for the
period from January 1, 1997 through November 16, 1997, respectively. No interest
was paid for the year ended December 31, 1999 or for the period from November
17, 1997 to December 31, 1997.

6.     FUTURE MINIMUM LEASE INCOME AND PAYMENTS

         The Company has entered into lease agreements with tenants with lease
terms ranging from one year to twenty years. The leases generally provide for
tenants to share in increases in operating expenses and real estate taxes in
excess of specified base amounts.

         Approximately 21%, 16%, 39%, and 57%, of rental revenue for the years
ended December 31, 1999 and 1998, the period from November 17, 1997 through
December 31, 1997, and the period from January 1, 1997 through November 16,
1997, respectively, was received from six different tenants (only five of these
tenants were present during the year ended December 31, 1999, three tenants for
the year ended December 31, 1998 and the period from November 17, 1997 through
December 31, 1997, and four tenants for the period from January 1, 1997 to
November 16, 1997).


                                      F-22
<PAGE>

6.       FUTURE MINIMUM LEASE INCOME AND PAYMENTS (CONTINUED)

         The total future minimum rentals to be received by the Company under
such noncancelable operating leases in effect at December 31, 1999, exclusive of
tenant reimbursements and contingent rentals, are as follows:

<TABLE>
<CAPTION>

              YEAR ENDING DECEMBER 31                                AMOUNT
              -----------------------                                ------
<S>           <C>                                                    <C>
              2000...........................................        $ 118,464
              2001...........................................          109,835
              2002...........................................           98,298
              2003...........................................           89,722
              2004...........................................           80,882
              Thereafter.....................................          331,021
                                                                -----------------
                                                                     $ 828,222
                                                                =================

         Future minimum rentals include amounts to be received from PGI and
certain affiliates totaling $6,024.

         In addition, as a part of lease agreements entered into with certain
tenants, the Company assumed the tenants' leases at their previous locations and
subsequently executed subleases for certain of the assumed lease space. Future
minimum rental payments to be paid by the Company under leases assumed, net of
subleases executed through December 31, 1999, are as follows:

<CAPTION>

              YEAR ENDING DECEMBER 31                                  AMOUNT
              -----------------------                                  ------
<S>           <C>                                                       <C>
              2000...........................................           $1,367
              2001...........................................            1,400
              2002...........................................              749
              2003...........................................               67
                                                                ----------------------
                                                                        $3,583
                                                                ======================

</TABLE>

         During the years ended December 31, 1999 and 1998, the Company
recognized lease termination income of $5,205 and $4,124, respectively, which is
included in rental revenue. In 1999, the Company granted permanent easements for
fees of $2,600, which has been included in other property revenues.

         During 1995, a tenant of the 77 West Wacker Drive building experienced
financial difficulties and in 1997 defaulted on certain 1997 rental payments. In
early November 1997, the Predecessor reached an agreement with the tenant to
terminate the lease. During the period from January 1, 1997 through November 16,
1997, the Predecessor recognized revenue from this tenant only to the extent
cash was received.

7.     PREFERRED SHARES

         The Company is authorized to issue up to 30,000,000 of non-voting
preferred shares of beneficial interest in one or more series. At December 31,
1999 and 1998, the Company had 2,000,000 Series A-Cumulative Convertible
Preferred Shares of beneficial interest ("Series A - preferred shares") with a
$0.01 par value designated, issued and outstanding. On June 5, 1998, the Company
completed the sale of 4,000,000 Series B-Cumulative Redeemable Preferred Shares
of beneficial interest ("Series B - preferred shares") with a $0.01 par value,
which were designated issued and outstanding at December 31, 1999 and 1998.

         Distributions on the Series B-preferred shares are payable quarterly on
or about the last day of January, April, July and October of each year, at the
rate of 9% (equivalent to $2.25 per annum


                                      F-23
<PAGE>

7.     PREFERRED SHARES (CONTINUED)

per Series B-preferred share). The Series B-preferred shares rank senior to the
Company's common shares and Series A preferred shares as to the payment of
dividends and as to the distribution of assets. On and after June 5, 2003, the
Series B-preferred shares may be redeemed at the Company's option at a
redemption price of $25.00 per share plus accrued and unpaid distributions. The
redemption price is payable solely out of the proceeds from the sale of other
Company capital shares of beneficial interest.

         Distributions on the Series A-preferred shares are payable quarterly on
or about the last day of March, June, September and December of each year, at a
rate of 7.5% (equivalent of $1.50 per annum per Series A-preferred share
starting November 17, 1998; prior to November 17, 1998, equivalent of $1.40 per
annum per Series A - preferred share). The Series A-preferred shares rank senior
to the Company's common shares as to the payment of dividends and as to the
distribution of assets. Series A-preferred shareholders can convert their
preferred shares into the Company's common shares based on a conversion price,
as defined. The Company has the option to redeem the Series A-preferred shares
beginning on and after November 17, 2007, in cash equal to the original issue
price ($20.00) plus any accrued and unpaid dividends. The holders of the Series
A-preferred shares have the right to elect two additional members to the
Company's Board of Directors if the equivalent of two quarterly dividends are in
arrears. Each of such two directors will be elected to serve until the earlier
of: (1) the election and qualification of such directors' successor, or (2) the
payment of the dividend arrearage.

         On April 13, 1999, the Company modified the terms of the Company's
Series A preferred shares. Under the original terms, the holders of the Series A
preferred shares had certain conversion rights if for two consecutive quarters
(1) the ratio of the Company's debt plus nonconvertible preferred shares divided
by its total market capitalization exceeded 65% or (2) its fixed charges
coverage ratio fell below 1.4. The new agreement eliminates the debt-to-market
capitalization covenant. In exchange, the holders of the Series A preferred
shares were granted the future right to cause the redemption of their shares at
a price of $20.00 per share upon 120 days' prior written notice, which
redemption may occur during the period beginning January 15, 2002 and ending
January 15, 2004. The Series A preferred shares will continue to pay an annual
dividend of $1.50 per share and will continue to be convertible into common
shares on a one for one basis. The Company made a $400 one-time payment as part
of this transaction, which will be amortized, using the straight-line method,
through January 15, 2002 as a preferred divided. All 2,000,000 outstanding
shares of the Company's Series A preferred shares have been reclassified to
redeemable equity at their aggregate redemption price of $40,000, net of the
unamortized transaction fee ($297 as of December 31, 1999), in the consolidated
balance sheet.


                                      F-24
<PAGE>

8.       EARNINGS PER SHARE

         The following table sets forth the computation of the Company's basic
and diluted net income available per weighted-average common share of beneficial
interest for the years ended December 31, 1999 and 1998 and for the period from
November 17, 1997 through December 31, 1997:

<TABLE>
<CAPTION>

                                                                                                            PERIOD FROM NOVEMBER
                                                                                                              17, 1997 THROUGH
                                                                               YEAR ENDED DECEMBER 31,            DECEMBER 31,
                                                                               1999              1998                1997
                                                                     -------------------------------------------------------------
<S>                                                                       <C>            <C>                 <C>
         Numerator:
            Income before gain on sales of real estate, minority
              interests, extraordinary items and preferred
              distributions.......................................        $    33,567    $       30,866      $         1,427
            Minority interests....................................             (8,723)           (9,368)                (635)
            Net income allocated to preferred distributions.......            (12,103)           (7,971)                (345)
                                                                     ------------------------------------------------------------
            Income before gain on sales of real estate and
              and extraordinary items.............................             12,741            13,527                  447
            Gain on sales of real estate, net of minority interests            31,086                 -                    -
            Extraordinary loss on extinguishment of debt, net of
              minority interests .................................             (1,082)           (1,253)                   -
                                                                     ------------------------------------------------------------
            Numerator for earnings per share
              - income available to common shares.................        $    42,745    $       12,274      $           447
                                                                     ============================================================
         Denominator:
            Denominator for basic earnings per share-weighted
              average common shares...............................         15,141,630        14,862,958           12,593,000
         Effect of dilutive securities:
            Employee stock options................................             64,866            11,100                    -
            Employee stock grants.................................              2,415               977                    -
                                                                     ------------------------------------------------------------
            Denominator for diluted earnings per share - adjusted
              weighted average common shares and assumed
              conversions ........................................         15,208,911        14,875,035           12,593,000
                                                                     ============================================================
            BASIC EARNINGS AVAILABLE TO COMMON
              SHARES PER WEIGHTED-AVERAGE COMMON SHARE:
            Income before gain on sales of real estate and
              extraordinary items.................................        $      0.84    $         0.91      $          0.04
            Gain on sales of real estate, net of minority interests              2.05                 -                    -
            Extraordinary loss on extinguishment of debt, net of
              minority interests..................................              (0.07)            (0.08)                   -
                                                                     ------------------------------------------------------------
            Net income available per weighted-average common
              share of beneficial interest - basic................        $      2.82    $         0.83      $          0.04
                                                                     ============================================================
            DILUTED EARNINGS AVAILABLE TO COMMON
              SHARES PER WEIGHTED-AVERAGE COMMON SHARE:
            Income before gain on sales of real estate and
              extraordinary items.................................        $      0.84    $          0.91     $          0.04
            Gain on sales of real estate, net of minority interests              2.04                  -                   -
            Extraordinary loss on extinguishment of debt, net of
              minority interests..................................              (0.07)             (0.08)                  -
                                                                     ------------------------------------------------------------
            Net income available per weighted-average common
              share of beneficial interest - diluted..............        $      2.81    $          0.83     $          0.04
                                                                     ============================================================

</TABLE>


                                      F-25
<PAGE>

8.       EARNINGS PER SHARE (CONTINUED)

         For the 1999 earnings per share computation, 1,122,833 of the Company's
options during the first quarter of 1999, 1,120,333 options during the second
and third quarters of 1999, and 1,227,833 options during the fourth quarter of
1999 were not included in the computation of diluted earnings per share because
the conversion would have been antidilutive.

         For the 1998 earnings per share computation, all of the Company's
options during the second and third quarters of 1998, 1,150,000 options during
the fourth quarter and all options during the period from November 17, 1997
through December 31, 1997 were not included in the computation of diluted
earnings per share because the conversion would have been antidilutive.

         The minority interest in the Operating Partnership had 10,558,545,
10,282,521 and 10,250,882 weighted average common units outstanding during the
years ended December 31, 1999 and 1998 and for the period from November 17, 1997
through December 31, 1997, respectively, of which 9,631,445, 9,355,421 and
9,323,782, respectively, may be converted into common shares at the Company's
option on a one for one basis. The convertible common units were not included in
the computation of diluted earnings per share because the conversion would have
been antidilutive.

         The Company had 2,000,000 Series A-cumulative convertible preferred
shares outstanding during the years ended December 31, 1999 and 1998 and for the
period from November 17, 1997 through December 31, 1997. The Series
A-convertible preferred shares were not included in the computation of diluted
earnings per share because the conversion would have been antidilutive.

9.     EMPLOYEE BENEFIT PLANS

         On November 17, 1997, the Company established a Share Incentive Plan
(the "Plan") which permits the grant of stock options, stock appreciation
rights, restricted stock, restricted units and performance units to officers and
other key employees and to officers and employees of subsidiaries, the Operating
Partnership, the Services Company and other-owned partnerships. The Plan also
permits the grant of stock options to non-employee Trustees.

         Under the Plan, up to 2,540,000 of the Company's common shares may be
issued or transferred to participants. The maximum aggregate number of common
shares and share equivalent units that may be subject to awards granted during
any calendar year to any one participant under the Plan, regardless of the type
of awards, is 200,000. This limit applies regardless of whether such
compensation is paid in common shares or share equivalent units.

       The Compensation Committee of the Company's Board of Trustees (the
"Compensation Committee") administers the Plan and has the authority to
determine, among other things, subject to the terms and conditions of the Plan,
the individuals to be granted options, the exercise price at which shares may be
acquired, the number of shares subject to options, the vesting requirements and
the exercise period of each option. The Compensation Committee is granted
discretion to determine the term of each option granted under the Plan to
employees, executives and Trustees, but in no event will the term exceed ten
years and one day from the date of the grant. On November 17, 1997, the
Compensation Committee granted options to purchase a total of 1,160,500 of the
Company's common shares (including the 75,000 options granted to Board members
described below) at an exercise price of $20.00 per share to various executives
and employees of the Company. During 1999 and 1998, the Board granted options to
purchase a total of 107,500 and 129,500 respectively, (exclusive of options
described below as part of the Company's annual incentive award program) of the
Company's common shares to various employees and executives of the Company hired
in 1999 and 1998 at exercise equal to the closing price on the day before the


                                      F-26
<PAGE>

9.       EMPLOYEE BENEFIT PLANS (CONTINUED)

grant of the options. In addition, during 1999 and 1998, 63,167 and 117,500
options, respectively, expired as the result of employees or executives, who
held options, resigning from the Company. Options for these shares granted under
the plan to executives and employees have a term of 10 years and will be
exercisable and vest in installments as follows: (i) 33.3% of the number of
shares commencing in the first anniversary of the date of grant; (ii) an
additional 33.3% for the shares commencing on the second anniversary of the date
of the grant; and (iii) the remainder of the shares commencing on the third
anniversary of the date of grant.

         Under the Plan, four of the Trustees consisting of those Trustees who
are not employees or consultants of the Company as of November 17, 1997 received
options to acquire 5,000 of the Company's common shares at $20.00 per share (the
closing price on the day of the grant of the options). On December 16, 1999, the
Board granted each of the four non-employee Trustees options to acquire an
additional 5,000 of the Company's common shares at $13.19 per share (the closing
price on the day before the grant of the options). Stock options granted to the
Trustees have a term of 10 years and will vest and be exercisable at the rate of
33.3% per year over three years commencing on the first anniversary of their
date of grant.

       Under a consulting agreement with one of the members of the Board, the
Board granted on November 17, 1997, options to purchase 75,000 of the Company's
common shares at an exercise price of $20.00 per share. Pursuant to the
agreement, the options granted have a term of 10 years and will be exercisable
and vest at the rate of 33.3% per year over three years commencing on the first
anniversary of their date of grant.

       During 1998, the Company issued a total of 22,500 common shares granted
to two of its officers and 2,500 common shares granted to one of its Board
members pursuant to their employment agreements or consulting agreement, as
applicable, valued at the market price of the Company's common shares at the
date of grant, totaling $458.

       As part of an annual incentive award program, on December 16, 1999, the
Board granted certain executives 29,719 shares of the Company's common shares,
and options to purchase 363,891 of the Company's common shares at an exercise
price of $13.19 per share. The common share grants vest 50% on January 15, 2000
and 50% on January 15, 2001 and the options vested on January 15, 2000. The
Board also granted certain executives 25,380 shares of the Company's common
shares and certain executives and employees options to purchase 364,200 of the
Company's common shares, at an exercise price of $13.19 per share, as part of a
long-term incentive program. These common share grants and options vest at the
rate of 25.0% per year in four annual installments commencing on January 15,
2000. As the total options granted to date exceed that authorized under the
plan, the excess options are subject to the Company's shareholders' approval.

         As part of an annual incentive award program, on December 17, 1998, the
Board granted certain executives 24,933 shares of the Company's common shares
and options to purchase 538,889 of the Company's common shares at an exercise
price of $14.00 per share. The common share grants vest 50% on January 15, 1999
and 50% on January 15, 2000 and the options vested on January 15, 1999. The
Board also granted certain executives options to purchase 254,000 of the
Company's common shares, at an exercise price of $14.00 per share, as part of a
long-term incentive program. These options vest at the rate of 25.0% per year in
four annual installments commencing on January 15, 1999.


                                      F-27
<PAGE>

9.     EMPLOYEE BENEFIT PLANS (CONTINUED)

       The unaudited pro forma information regarding net income and earnings per
share is required by SFAS No. 123, "Accounting for Stock-Based Compensation,"
and has been determined as if the Company had accounted for its options under
the fair value method of that statement. The fair value for the options was
estimated at the date of grant using a Black-Scholes option pricing model with
the following weighted average assumptions for 1999, 1998 and 1997,
respectively: risk free interest rate of 6.47%, 5.01% and 5.41%; expected
dividend yield of 10.0%, 6.7% and 6.7%; volatility factor of the expected market
price common stock of 0.307, 0.339 and 0.156; and a weighted-average expected
life of the options of seven years for 1999 and three years for 1998 and 1997.
The unaudited pro forma expense would be $1,655 ($0.11 per basic and diluted
common share) for the year ended December 31, 1999, $1,174 ($0.08 per basic and
diluted common share) for the year ended December 31, 1998 and $69 ($0.01 per
basic and diluted common share) for the period from November 17, 1997 through
December 31, 1997. The effects on unaudited pro forma net income and pro forma
earnings per common share for the years ended December 31, 1999 and 1998 and for
the period from November 17, 1997 to December 31, 1997 of amortizing to expense
the estimated fair value of stock options are not necessarily representative of
the effects on net income to be reported in future years due to such things as
the vesting period of the stock options, and the potential for issuance of
additional stock options in future years. For purposes of pro forma disclosures,
the estimated fair value of the options is amortized to expense over the
options' vesting period.

         The Black-Scholes options valuation model was developed for use in
estimating the fair value of traded options which have no vesting restrictions
and are fully transferable. In addition, option valuation models require the
input of highly subjective assumptions including the expected stock price
volatility. Because changes in the subjective input assumptions can materially
affect the fair value estimate, in the opinion of the Company's management, the
existing models do not necessarily provide a reliable single measure of the fair
value of the options granted under the plan.

         The following is a summary of the Company's stock option activity, and
related information for the years ended December 31, 1999 and 1998 and for the
period from November 17, 1997 through December 31, 1997 follows:

<TABLE>
<CAPTION>

                                                                             SHARES               WEIGHTED
                                                                           SUBJECT TO         AVERAGE EXERCISE
                                                                             OPTION            PRICE PER SHARE
                                                                        ----------------- --------------------------
<S>                                                                          <C>                   <C>
    Initial options granted...........................................       1,160,500             $20.00
    Options canceled..................................................               -                   -
                                                                        -----------------
    Balance at December 31, 1997......................................       1,160,500              20.00
    Additional options granted........................................         922,389              14.77
    Options canceled..................................................        (117,500)             20.01
                                                                        -----------------
    Balance at December 31, 1998......................................       1,965,389              17.54
    Additional options granted........................................         855,591              13.60
    Options exercised.................................................            (100)             14.00
    Options canceled..................................................         (63,167)             18.43
                                                                        -----------------
    Balance at December 31, 1999......................................       2,757,713              16.30
                                                                        =================

</TABLE>

         At December 31, 1999, 1,308,126 shares were exercisable at a weighted
average exercise price of $17.24 per share. No options on shares were available
for future grant at December 31, 1999. The remaining weighted-average
contractual life of these options was 8.59 years. The weighted-average grant
date fair value of all options granted during the years ended December 31, 1999
and 1998 and the period from November 17, 1997 through December 31, 1997 was
$1.45, $2.49 and $1.39, respectively.



                                      F-28

<PAGE>

10.    RELATED PARTY TRANSACTIONS

         The Company owns 100% of the nonvoting preferred stock of the Services
Company which had an initial carrying value of $425 and the Company provided a
loan in the amount of $4,800 (included in other assets) to the Services Company
(unpaid interest expense is included in accrued interest described below), with
interest at 11% per annum, payable quarterly and principal due November 2007.

         On January 1, 1998, the Company provided the Services Company a $5,000
line-of-credit, with interest at LIBOR plus 3%, principal and interest payable
monthly from available cash flow, as defined, and matures on December 31, 2000.
The line is collateralized by the Services Company's third party receivables and
is subject to various covenants. As of December 31, 1999 and 1998, the
line-of-credit balance was $1,795 and $1,328, respectively, and is included in
other assets. At December 31, 1999 and 1998, accrued interest of $44 and $52,
respectively, related to the above notes is included in other assets.

         The Company's net deficit in the Services Company at December 31, 1999
and 1998 was $3,770 and $176, respectively, and is included in other assets.
During the years ended December 31, 1999 and 1998 and for the period from
November 17, 1997 through December 31, 1997, the Company recorded net loss
(income) related to the Services Company of $3,234, $(133) and $19, respectively
representing its share of the Services Company's loss from operations of $3,865,
$518 and $83, respectively, net of interest income of $631, $651 and $64,
respectively, related to the previously described loans. In December 1999, the
Services Company wrote-off approximately $4,970 in goodwill and related
capitalized costs associated with its initial acquisition of a management and
construction company. The Company's share of this write-down, net of the tax
benefit at the service subsidiary level, was $2,833 and is included in its share
of the Services Company loss described above.

         The Company also paid general and administrative expenses (primarily
rent, salaries and benefits) of $505 and $233 on behalf of the Services Company
for the years ended December 31, 1999 and 1998, respectively. No amounts were
paid for the period from November 17, 1997 through December 31, 1997.

         During the years ended December 31, 1999 and 1998 (no services were
provided for the period from November 17, 1997 through December 31, 1997), the
Services Company provided the Company with development, acquisition due
diligence, construction, construction management, leasing and property
management services, which are summarized as follows:


<TABLE>
<CAPTION>

                                                                              YEAR ENDED DECEMBER 31
                                                                             1999                 1998

                                                                     ------------------------------------------
<S>                                                                     <C>                  <C>
Development, construction and construction management...........        $  14,740            $   2,639
Acquisition due diligence.......................................              287                  182
Leasing.........................................................            1,985                  361
Property management.............................................              265                  301

</TABLE>

         At December 31, 1999, the Company owed the Services Company $2,227 and
at December 31, 1998, the Services Company owed the Company $1,033, related to
the above services or for advances not processed under the line-of-credit (net
amounts included in other assets).

         The Company has lease agreements with PGI and certain affiliates, from
which it recognized rental revenue of $644, $933 and $85 and tenant
reimbursements revenue of $523, $644 and $46 for the years ended December 31,
1999 and 1998 and for the period from November 17, 1997 through December 31,
1997, respectively. In addition, in 1999 and 1998 the


                                 F-29
<PAGE>



10.      RELATED PARTY TRANSACTIONS (CONTINUED)

Company provided $181 and $452, respectively, to one of the PGI affiliates for
tenant improvements.

         A nonaffiliated investor in Primestone currently has a lease agreement
with the Company that expires December 12, 2000. The Company recognized rental
revenue of $1,000 from this investor during 1999.

         During 1999, the Operating Partnership acquired various office and
industrial properties from minority interest holders for a total purchase price
of $366,200 and assumed mortgage notes payable of $70,092 (see Note 13 for a
listing of the properties). In addition, the Operating Partnership also acquired
40.5 acres of land in 1999 from a minority interest holder for a total purchase
price of $5,430.

         In connection with the leasing and management of the Predecessor's
properties, PGI was entitled to payments and fees for services performed. Such
amounts incurred during the period from January 1, 1997 through November 16,
1997:

<TABLE>
<CAPTION>
                                                                                        PERIOD FROM
                                                                                     NOVEMBER 17, 1997
                                                                                           THROUGH
                                                                                     DECEMBER 31, 1997
                                                                                     -----------------

<S>                                                                                        <C>
      Property management fee (a).....................................                     $1,238
      Administration fees (b).........................................                        463
      Legal fees (c)..................................................                        271
      Leasing fees (d)................................................                          2
      Reimbursables (e)...............................................                        252
      Asset management fee (f)........................................                        110
</TABLE>

- ---------------------
(A)      PGI was entitled to a property management fee ranging from 2.5% to 4%
         of gross receipts, payable monthly in arrears. Amounts are included in
         property and asset management fees to affiliates in the combined
         financial statements of the Predecessor.

(B)      PGI was entitled to an annual administration fee as defined in the
         Partnership agreement. Amounts are included in general and
         administrative expenses in the combined financial statements of the
         Predecessor.

(C)      PGI was reimbursed for reasonable legal and accounting expenses
         incurred in connection with the operations of the Predecessor
         partnerships. Amounts are included in general and administrative
         expenses in the combined financial statements of the Predecessor.

(D)      PGI was entitled to leasing commissions for all leases signed. The
         commissions are equal to 1.5% to 3% of rent, exclusive of tenant
         reimbursements, during the base term of the lease; commissions were
         payable upon commencement of the respective leases.

(E)      PGI was entitled to reimbursement for expenses paid for the benefit of
         the Predecessor partnerships. Amounts are included in general and
         administrative expenses in the combined financial statements of the
         Predecessor.

(F)      PGI was entitled to annual fees for providing asset management services
         to the Predecessor partnerships which was payable from available cash
         flows. Amounts are included in property and asset management fees to
         affiliates in the combined financial statements of the Predecessor.

         Predecessor amounts due to affiliates are for amounts due for advances
made by affiliates and amounts due from affiliates were for advances made by the
Predecessor partnerships to affiliates. Predecessor amounts due from and due to
affiliates incurred interest at Prime plus 2% and were payable upon demand. Any
unpaid amounts due to affiliates or amounts due from affiliates as of November
16, 1997, have been reflected as distributions to or contributions from PGI in
the combined financial statements of the Predecessor.


                                 F-30
<PAGE>



10.      RELATED PARTY TRANSACTIONS (CONTINUED)

       Average balances of amounts due from (including loans receivable from
Services Company) and due to affiliates for the years ended December 31, 1999
and 1998, for the period from November 17, 1997 through December 31, 1997, and
for the period from January 1, 1997 through November 16, 1997 are summarized as
follows:

<TABLE>
<CAPTION>

                                                              THE COMPANY                                PREDECESSOR
                                   ------------------------------------------------------------------ ------------------
                                                                                   PERIOD FROM           PERIOD FROM
                                                                                  NOVEMBER 17,           JANUARY 1,
                                                                                  1997 THROUGH          1997 THROUGH
                                            YEAR ENDED DECEMBER 31,               DECEMBER 31,          NOVEMBER 16,
                                          1999                  1998                  1997                  1997

                                 -------------------------------------------------------------------- ------------------
<S>                                      <C>                   <C>                   <C>                      <C>
Due from affiliates............          $5,738                $6,441                $5,029                   $1,447
Due to affiliates..............               -                     -                     -                      354

</TABLE>


11.    FAIR VALUES OF FINANCIAL INSTRUMENTS

         SFAS No. 107, "Disclosures About Fair Value of Financial Instruments"
and SFAS No. 119, "Disclosure about Derivative Financial Instruments and Fair
Value of Financial Instruments" require disclosure of the fair value of certain
on-and off-balance sheet financial instruments for which it is practicable to
estimate. Fair value is defined by SFAS No. 107 as the amount at which the
instrument could be exchanged in a current transaction between willing parties,
other than in a forced or liquidation sale.

         The Company used the following methods and assumptions in estimating
the fair value disclosures for financial instruments.

11.      FAIR VALUES OF FINANCIAL INSTRUMENTS

CASH AND CASH EQUIVALENTS AND RESTRICTED CASH ESCROWS

         The carrying amount of cash and cash equivalents and restricted cash
escrows reported in the consolidated balance sheets approximates their fair
value.

         The Company maintains its cash and cash equivalents and restricted cash
escrows at various financial institutions. The combined account balances at each
institution periodically exceed FDIC insurance coverage, and as a result, there
is a concentration of credit risk related to amounts on deposit in excess of
FDIC insurance coverage. The Company believes that the risk is not significant.

MORTGAGE NOTES PAYABLE, CREDIT FACILITIES AND BONDS PAYABLE

         The carrying amount of the Company's variable and fixed rate borrowings
(including accrued interest) and interest rate protection agreements
approximates fair value based on the current borrowing rate for similar types of
borrowing and interest rate protection arrangements.

12.    COMMITMENTS AND CONTINGENCIES

         The Company is a defendant in legal actions arising during the normal
course of business. The Company believes that the ultimate outcome of those
actions will not materially affect its consolidated financial position.

         All of the Company's properties were subject to Phase I or similar
environmental assessment by independent environmental consultants which were
intended to discover information regarding, and to evaluate the environmental
condition of, the surveyed property and surrounding properties. The


                                 F-31
<PAGE>



12.      COMMITMENTS AND CONTINGENCIES (CONTINUED)

Company is aware of contamination at certain of the industrial properties
included in the Predecessor properties, which are already in remediation
programs sponsored by the state in which they are located. The Phase I
assessments estimate that remedial action plans will have a probable cost of
approximately $3,205. During 1997, PGI initiated lawsuits against a former
environmental consultant and a former tenant of one of these properties for
damages to cover the cost of the remedial action plans. During 1997, the
Predecessor recorded a liability of $3,205 (included in accounts payable and
accrued expenses at December 31, 1999 and 1998). PGI has contractually agreed to
indemnify the Company from any environmental liabilities the Company may incur
in connection with the Chicago, Hammond, and East Chicago Enterprise industrial
parks. On February 20, 1998, PGI reached an agreement with the former tenant and
received a $1,822 settlement payment. The Company is also aware of contamination
at two other properties. At one of the properties, the tenant has provided the
Company with an indemnity for all the cost associated with the environmental
remediation and the tenant has purchased the property. The second property is in
the remediation program sponsored by the state in which it is located and the
previous owner has placed in an escrow account $760 (the maximum cost the
previous owner has agreed to pay), which is being used in the clean-up of the
property.

         The Company has contracts to acquire parcels of land and an industrial
property from affiliates of a member of the Board for a total purchase price of
approximately $20,856, $12,284 of which is payable in Operating Partnership
common units. The contracts require the Company to acquire minimum portions of
the land on an annual basis until all of the parcels are acquired by 2002.

         During 1998, the Company entered into contracts to acquire three
parcels of land totaling 233.3 acres, of which 24.9 acres was purchased in 1999
and 54.7 acres was purchased in 1998. The remaining 153.7 acres must be
purchased, at the Company's discretion, over the next two to four years for
approximately $9,754. The Company is required to make periodic installment
payments, of which $840 were made in 1999 and $400 were made in 1998 (amount
included in property under development).

       During 1999, the Company sold ten properties in a single transaction with
a total sales price of $89,500, resulting in a gain of approximately $3,570 (see
Note 13 for a listing of the properties). As part of the sale, the Company
agreed to assume responsibility for leasing two of the properties for five
years, once the existing tenants' leases expire in 2000 and 2001. The Company's
total lease obligation of $16,180 is reduced as existing tenants renew their
leases or as new leases from third parties are executed for space in the
properties. As a result of these commitments, the gain has been deferred and is
included in other liabilities until the tenants either renew their leases or are
replaced. The gain may be reduced by any obligations the Company may incur as a
result of these commitments.

       On February 8, 1999, the Company signed a contract with a buyer pursuant
to which we will construct and sell to the buyer an approximately 1,018-space
parking garage, including approximately 4,000 square feet of retail space, on
approximately 22,000 square feet of a 61,302 square foot parcel of land that we
own in the Chicago central business district (see Note 13 to the table of
properties acquired, placed in service and sold in 1999 regarding acquisition of
this parcel). The contract provides for a sales price of the completed garage of
approximately $36.0 million, plus the value of any of the retail space leased by
us at the time of sale up to a maximum of $1.75 million. In addition, we are
entitled to receive an additional $1.0 million from the buyer if, within 15
years after the sale of the parking garage to the buyer, we substantially
complete construction of an office building on the land containing at least
800,000 square feet of office space, which is occupied by at least one tenant
who is not affiliated with the Company. Pursuant to a letter agree-


                                 F-32
<PAGE>


12.      COMMITMENTS AND CONTINGENCIES (CONTINUED)

ment dated December 3, 1999, the contingency period for obtaining the required
city approvals for the construction of the parking garage was extended from
December 31, 1999 until April 30, 2000. The parties are currently discussing the
possibility of further extending such contingency if necessary, as well as
certain other potential modifications to the terms of the transaction.

         On November 3, 1999, an unconsolidated investment partnership of the
Company entered into an interest rate protection agreement to effectively fix
the interest rate cost of its mortgage note payable to within a range of 6.87%
to 9.00%. This agreement has an original notional amount of $170,000 that
decreases to $166,000 on September 30, 2000, and to $162,000 on September 30,
2001, coincident with principal payments on the mortgage note payable. The
interest rate protection agreement terminates on September 30, 2002. On November
10, 1999, the investment partnership entered into an additional interest rate
protection agreement to effectively fix the interest rate cost of its mortgage
note payable to within a range of 7.36% to 9.00% beginning on September 30,
2002. This agreement has an original notional amount of $157,500 that decreases
to $152,500 September 30, 2003, coincident with principal payments on the
mortgage note payable. The interest rate protection agreement terminates on
September 30, 2004. The Company has provided guarantees on both of the interest
rate protection agreements. As of December 31, 1999, the Company has not been
required to fulfill any commitments under the guarantees.

         During 1999, the Company granted to unrelated parties permanent
easements to space within an office property and to industrial land for total
fees of $2,600, which has been included in other property revenues in 1999. The
Company is under no obligation to perform any services for the parties to earn
these fees, and believes that the easements do not decrease the value of the
properties.


                                 F-33
<PAGE>


13.    PROPERTY ACQUISITIONS AND DISPOSITIONS

        The following properties were acquired, placed in service or sold in
1999 and 1998. The results of their operations are included in the Company's
consolidated statement of operations from their respective dates of acquisition.

<TABLE>
<CAPTION>

                                                                                   SALE PRICE/
                                                                                   ACQUISITION          MONTH

           PROPERTY                                      LOCATION                     COST          ACQUIRED/SOLD
   -------------------------------------------------------------------------------------------------------------------
<S>                                              <C>                                <C>               <C>
      1999 Acquisitions
   -----------------------------------------------
   Office and Industrial Properties:
   33 West Monroe Street                         Chicago, IL                        $  101,300         January
   National City Center(1)                       Cleveland, OH                         105,000         February
   800-810 Jorie Blvd                            Oak Brook, IL                          30,000          August
   901 Technology Way(1)                         Libertyville, IL                        4,100         January
   300 Craig Place(1)                            Hillside, IL                            8,600           July
   43-47 Hintz Road                              Wheeling, IL                            9,700        September
   IBM Plaza (1)                                 Chicago, IL                           248,500         December
   Brush Hill Office Court                       Westmont, IL                           12,900         December
                                                                                ------------------
   Total Office and Industrial Properties
   Acquired                                                                         $ 520,100
                                                                                ==================
   Land:
   Carol Stream Land                              Carol Stream, IL                $      5,430     April, December
   Aurora Land                                    Aurora, IL                               918      July, November
   300 West Monroe Street and 25 &

       77 South Wacker Drive                      Chicago, IL                           55,912           July
                                                                                ------------------
   Total Land Acquired                                                              $   62,260
                                                                                ==================
   Developments placed in service:
   Office:
     Pine Meadows Center                         Libertyville, IL                     $ 23,659          October,
                                                                                                        December
   Industrial:
     320 Fullerton Avenue                        Carol Stream, IL                       10,057          December
                                                                                ------------------
   Total developments placed in
      service                                                                       $   33,716
                                                                                ==================
   1999 Sales
   -----------------------------------------------
   941-961 Weigel Drive (2)                      Elmhurst, IL
   300 Craig Place (2)                           Hillside, IL
   306-310 Era Drive (2)                         Northbrook, IL
   515 Huehl Road/500 Lindberg Road (2)          Nothbrook, IL
   555 Huehl Road (2)                            Northbrook, IL
   1301 Ridgeview Drive (2)                      McHenry, IL
   3818 Grandville/1200 Northwestern(2)          Gurnee, IL
   801 Technology Way(2)                         Libertyville, IL
   901 Technology Way(2)                         Libertyville, IL
   1001 Technology Way(2)                        Libertyville, IL
                                                                                ------------------
                                                                                    $   89,500            July
   455 Academy Drive (3)                         Northbrook, IL                          4,500          December
                                                                                ------------------
                                                                                    $   94,000
                                                                                ==================
   Land:
     180 Kehoe Blvd.                             Carol Stream, IL                  $     1,000          December
                                                                                ==================
   50% of Common Interest:
     77 W. Wacker Drive (4)                      Chicago, IL                        $   88,000          September
                                                                                ==================
   Portion of an Office Property:

     122 S. Michigan Ave. (5)                    Chicago, IL                        $   14,950            April
                                                                                ==================
   1998 Acquisitions
   -----------------------------------------------
   Office and Industrial Properties:
   33 North Dearborn Street                      Chicago, IL                        $   34,425           January
   Commerce Point                                Arlington Heights, IL                  29,971          February
   208 South LaSalle Street                      Chicago, IL                            61,352            March
   122 South Michigan Avenue                     Chicago, IL                            29,680            April
   2100 Swift Drive                              Oak Brook, IL                           6,253            April

</TABLE>


                                 F-34
<PAGE>


<TABLE>
<S>                                              <C>                                <C>               <C>
   6400 Shafer Court                             Rosemont, IL                           22,228             May
   Two Century Centre                            Schaumburg, IL                         35,886            June
   2000 York Road                                Oak Brook, IL                          16,232            June
                                                                                ------------------
   Total Office and Industrial Properties
       Acquired                                                                     $  236,027
                                                                                ==================

</TABLE>


   (1)    These properties were acquired from minority interest unit holders of
          the Operating Partnership or their affiliates.
   (2)    These properties were sold in a single transaction with a total sales

          price of $89,500, resulting in a gain of approximately $3,570. As part
          of the sale, the Company agreed to assume responsibility for leasing
          two of the properties for five years, once the existing tenants'
          leases expire in 2000 and 2001. The Company's total lease obligation
          is reduced as existing tenants renew their leases or as new leases
          from third parties are executed for space in the properties. As a
          result of these commitments, the gain has been deferred and is
          included in other liabilities until the tenants either renew their
          leases or are replaced. The gain may be reduced by any obligations the
          Company may incur as a result of these commitments.

    (3)   On December 22, 1999, the Company sold this property for a total sales
          price of $4,500, resulting in a gain of $883.
    (4)   On September 30, 1999, the Company sold a 50% common interest for
          $22,000 and a $66,000 preferred interest in this property, resulting
          in a gain of $48,339. The remaining 50% common interest was
          contributed to a new joint venture, which is accounted for using the
          equity method of accounting. At December 31, 1999, the Company's
          investment in the new joint venture was a deficit of $1,019 (included
          in other assets) consisting of $256 representing its share of the new
          joint venture's operations (included in other revenue) net of $1,275
          of distributions received from the new joint venture. In addition, the
          Company owes the new joint venture $1,079 at December 31, 1999
          (included in other liabilities).

     (5)  On April 19, 1999, the Company sold approximately 161,710 net rentable
          square feet of its 122 South Michigan Avenue office building to
          National-Louis University (NLU), resulting in a gain of $3,828. As
          part of this sale, NLU has also acquired an undivided 31.56% interest
          in certain common areas of the property. The Company continues to own
          the remaining 350,659 net rentable square feet of the building and is
          responsible for the management of the entire property.

14.    UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

         The accompanying unaudited Pro Forma Condensed Consolidated Statements
of Operations are presented as if, at January 1, 1997, (i) the Company had
completed its initial public offering and its 1998 common share and preferred
share offerings and contributed the net proceeds to the Operating Partnership,
(ii) PGI and the other contributors had contributed certain of their respective
properties and operations to the Operating Partnership, (iii) the Operating
Partnership had completed the sale of common units to Primestone Investment
Partners L.P., (iv) the Operating Partnership acquired various office and
industrial properties and the Services Company from various third parties, (v)
sold all of or a portion of its interest in various office and industrial
properties, and (vi) the Operating Partnership repaid debt on certain of the
contribution properties. In the Company's management's opinion, all adjustments
necessary to reflect the effects of the above transactions have been made.

         The unaudited Pro Forma Condensed Consolidated Statements of Operations
are not necessarily indicative of what the actual results of operations would
have been assuming the above mentioned transactions had occurred at the dates
indicated above, nor do they purport to represent the Company's future results
of operations.


                                 F-35
<PAGE>


           PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
                                   (UNAUDITED)

<TABLE>
<CAPTION>

                                                                         YEAR ENDED DECEMBER 31,
                                                          ---------------------------------------------------------
                                                                1999                1998              1997
                                                         ---------------------------------------------------------
<S>                                                             <C>                <C>               <C>
Total revenue........................................           $209,511           $204,794          $187,169
                                                         =========================================================
Net income...........................................            $21,523            $19,314           $13,890
                                                         =========================================================
Net income available to common shareholders..........            $ 9,420            $ 7,314           $ 1,890
                                                         =========================================================
Earnings per diluted common share....................            $  0.62            $  0.49           $  0.12
                                                         =========================================================

</TABLE>




                                 F-36
<PAGE>

15.   SEGMENT REPORTING

         Operating segments are defined as components of an enterprise about
which separate financial information is available that is evaluated regularly by
the chief operating decision maker, or decision making group, in deciding how to
allocate resources and in assessing performance. The Company's chief operating
decision makers manage its operating segments separately because each operating
segment represents a strategic business unit that has different issues and serve
different markets. The Company's reportable operating segments include its
office division and industrial division, with properties principally located in
the Chicago metropolitan area. The Company evaluates its office and industrial
divisions operations principally on their contribution to overall net income and
funds from operations.

        The following summarizes the Company's historical segment operating
results for the years ended December 31, 1999 and 1998 and for the period from
November 17, 1997 through December 31, 1997:

<TABLE>
<CAPTION>

                                                                         YEAR ENDED DECEMBER 31, 1999

                                                        ----------------------------------------------------------------
                                                                                         CORPORATE/
                                                                                         OPERATING
                                                            OFFICE       INDUSTRIAL      PARTNERSHIP           TOTAL
                                                        ----------------------------------------------------------------
<S>                                                        <C>            <C>          <C>                   <C>
Revenue:
   Rental..............................................    $  107,333     $   19,354   $          -          $ 126,687
   Tenant reimbursements...............................        44,075          6,096              -             50,171
   Mortgage note interest..............................         6,926              -              -              6,926
   Other...............................................        10,109          1,092          1,569             12,770
   Gain on sales of real estate........................        52,167            883              -             53,050
                                                        ----------------------------------------------------------------
Total revenue..........................................       220,610         27,425          1,569            249,604
Expenses:
   Property operations.................................        41,243          3,203              -             44,446
   Real estate taxes...................................        29,798          4,672              -             34,470
   Depreciation and amortization.......................        24,753          6,657          1,848             33,258
   Interest............................................             -              -         42,648             42,648
   Loss on land development option ....................             -              -            600                600
   General and administrative..........................             -              -          7,565              7,565
                                                        ----------------------------------------------------------------
Total expenses.........................................        95,794         14,532         52,661            162,987
                                                        ----------------------------------------------------------------
Income (loss) before minority interests and

   extraordinary items.................................       124,816         12,893        (51,092)            86,617
FFO adjustments (1) (unaudited):
   Real estate depreciation and amortization...........        24,017          4,683          1,849             30,549
   Amortization of costs for leases assumed............           899              -              -                899
   Straight-line rental revenue adjustments............        (2,809)          (454)             -             (3,263)
   Adjustments for sales of operating properties.......       (52,166)          (540)             -            (52,706)
   Net gain on Treasury lock terminations..............             -              -           (615)              (615)
   Joint venture adjustments ..........................             -              -            654                654
   Loss on land development option.....................             -              -            600                600
   Adjustment associated with services company writeoff             -              -          2,783              2,783
   Net income allocated to preferred shareholders......             -              -        (12,103)           (12,103)
                                                        ================================================================
Funds from operations..................................     $  94,757      $  16,582      $ (57,924)       $    53,415
                                                        ================================================================
</TABLE>

(1)   As defined by the National Association of Real Estate Investment Trusts
      ("NAREIT"), in its March 1995 White Paper


                                 F-37
<PAGE>

15.    SEGMENT REPORTING (CONTINUED)

<TABLE>
<CAPTION>
                                                                                YEAR ENDED DECEMBER 31, 1998
                                                          -----------------------------------------------------------------
                                                                                             CORPORATE/
                                                                                              OPERATING
                                                              OFFICE        INDUSTRIAL       PARTNERSHIP        TOTAL
                                                          -----------------------------------------------------------------
<S>                                                          <C>            <C>           <C>                  <C>
Revenue:
   Rental................................................    $  76,754      $  20,458     $            -       $  97,212
   Tenant reimbursements.................................       31,960          5,585                 -           37,545
   Mortgage note interest................................        5,866              -                 -            5,866
   Other.................................................        3,838            266             2,874            6,978
                                                          -----------------------------------------------------------------
Total revenue............................................      118,418         26,309             2,874          147,601

Expenses:

   Property operations...................................       26,838          2,760                 -           29,598
   Real estate taxes.....................................       19,858          5,219                 -           25,077
   Depreciation and amortization.........................       17,854          6,724               869           25,447
   Interest..............................................            -              -            30,901           30,901
   General and administrative............................            -              -             5,712            5,712
                                                          -----------------------------------------------------------------
Total expenses...........................................       64,550         14,703            37,482          116,735
                                                          -----------------------------------------------------------------
Income (loss) before minority interests

   and extraordinary items...............................       53,868         11,606           (34,608)          30,866
FFO adjustments (unaudited):
   Real estate depreciation and amortization.............       17,610          6,354                 -           23,964
   Amortization of costs for leases assumed..............        1,137              -                 -            1,137
   Straight-line rental revenue adjustments..............         (525)          (709)                -           (1,234)
   Net income allocated to preferred shareholders........            -              -            (7,971)          (7,971)
                                                          -----------------------------------------------------------------
Funds from operations....................................    $  72,090      $  17,251         $ (42,579)       $  46,762
                                                          =================================================================
</TABLE>

<TABLE>
<CAPTION>
                                                                           PERIOD FROM NOVEMBER 17, 1997
                                                                             THROUGH DECEMBER 31, 1997
                                                          ----------------------------------------------------------------
                                                                                             CORPORATE/
                                                                                             OPERATING
                                                              OFFICE       INDUSTRIAL       PARTNERSHIP          TOTAL
                                                          -----------------------------------------------------------------
<S>                                                         <C>             <C>          <C>                  <C>
Revenue:
   Rental................................................   $    5,025      $   2,268    $           -        $    7,293
   Tenant reimbursements.................................        1,663            378                -             2,041
   Mortgage note interest................................          248              -                -               248
   Other.................................................           87              -              161               248
                                                          -----------------------------------------------------------------
Total revenue............................................        7,023          2,646              161             9,830
Expenses:
   Property operations...................................        1,815            338               60             2,213
   Real estate taxes.....................................        1,479            286                -             1,765
   Depreciation and amortization.........................        1,582            803               93             2,478
   Interest..............................................            -              -            1,680             1,680

   General and administrative............................            -             -               267               267
                                                          -----------------------------------------------------------------
Total expenses...........................................        4,876          1,427            2,100             8,403
                                                          -----------------------------------------------------------------
Income (loss) before minority interests and
   extraordinary items...................................        2,147          1,219           (1,939)            1,427
FFO adjustments (unaudited):
   Real estate depreciation and amortization.............        1,470            745                -             2,215
   Amortization of costs for leases assumed..............          142              -                -               142
   Straight-line rental revenue adjustments..............          180              -                -               180
   Net income allocated to preferred shareholders........            -              -             (345)             (345)
                                                          =================================================================
Funds from operations....................................   $    3,939     $    1,964      $    (2,284)       $    3,619
                                                          =================================================================
</TABLE>

                                 F-38
<PAGE>


15. SEGMENT REPORTING (CONTINUED)

         The following summarizes the Company's segment assets and activity as
of December 31, 1999 and 1998 and expenditures for real estate for the years
ended December 31, 1999 and 1998 and the period from November 17, 1997 through
December 31, 1997.

<TABLE>
<CAPTION>

                                          .                                                        DECEMBER 31,
                                                                                              1999                1998
                                                                                      ---------------------------------------
<S>                                                                                       <C>                  <C>
Segment assets:
   Office........................................................                         $ 1,225,270          $   827,872
   Industrial....................................................                             149,158              180,116
   Corporate/operating partnership...............................                              69,747              156,526
                                                                                      ---------------------------------------
   Total consolidated assets.....................................                         $ 1,444,175           $1,164,514
                                                                                      =======================================

</TABLE>


<TABLE>
<CAPTION>

                                                                                                             PERIOD FROM
                                                                                                             NOVEMBER 17,
                                                                                    YEAR ENDED               1997 THROUGH
                                                                                   DECEMBER 31,              DECEMBER 31,
 Expenditures for real estate:                                                  1999           1998              1997
                                                                         ----------------------------------------------------
<S>                                                                           <C>             <C>                <C>
   Office........................................................             $500,037        $250,854           $417,802
   Industrial....................................................               31,083           2,898            171,477
   Corporate/operating partnership ..............................               52,334          47,316                  -
                                                                         ----------------------------------------------------
   Total expenditures for real estate............................             $583,454        $301,068           $589,279
                                                                         ====================================================

</TABLE>

16.      IMPACT OF YEAR 2000 (UNAUDITED)

         In prior years, the Company discussed the nature and progress of its
plans to become Year 2000 ready. In late 1999 and early 2000, the Company
completed its remediation and testing of systems. As a result of those planning
and implementation efforts, the Company experienced no significant disruptions
in mission critical information technology and non-information technology
systems and believes those systems successfully responded to the Year 2000 date
change. The Company is not aware of any material problems resulting from Year
2000 issues, either with its properties, its internal systems, or the products
and services of third parties. The Company will continue to monitor its mission
critical computer applications and those of its suppliers and vendors throughout
the year 2000 to ensure that any latent Year 2000 matters that may arise are
addressed promptly.


                                 F-39
<PAGE>


17. SUBSEQUENT EVENTS

         On January 20, 2000, the Company paid distributions of $0.375 per
Series A-preferred share, and $0.3375 per common share and on January 31, 2000
paid distributions of $0.5625 per Series B-preferred share to shareholders of
record on December 31, 1999.

         In January, 2000 the Company acquired the following 62,559 square foot
office property and 7.5 acres of vacant land.

<TABLE>
<CAPTION>

                                                           ACQUISITION     MORTGAGE
             PROPERTY                  LOCATION               COSTS          DEBT
- ----------------------------------------------------------------------------------------
<S>                                    <C>                   <C>            <C>
Office:
    Enterprise Center II               Westchester, IL       $  8,800       $  5,450
                                                        ================================
Land:
    Libertyville Office II             Libertyville, IL      $  1,200             -
                                                        ================================

</TABLE>



                                 F-40
<PAGE>



                            PRIME GROUP REALTY TRUST

             SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION

                             AS OF DECEMBER 31, 1999
                             (DOLLARS IN THOUSANDS)


<TABLE>
<CAPTION>

                                                                                     Cost Capitalized
                                                                                       Subsequent to
                                 Encumbrances(1)         Initial Cost                   Acquisition
                                ---------------- ---------------------------  ------------------------------


                                                                 Buildings                     Buildings
                                    December 31,                    and                           and
                                        1999          Land      Improvements       Land       Improvements
                                  -------------- ------------  -------------  -------------  ---------------
OFFICE
201 4th Ave N (4) ............     $    4,800     $    1,615     $    7,072     $       85     $    2,694
620 Market St. (4)  ..........          9,000             --          7,090            405            904
4823 Old Kingston
  Pike (4) ...................          3,500            378          2,808             19            289
625 Gay St. (4) ..............          9,000             --          7,379            568          1,090
Triad Parking Facility (4)....             --            507          1,046             24             64
1990 Algonquin Road ..........             --          1,550          6,375             --             98
2010 Algonquin Road ..........             --            508          2,044             --             82
1699 Woodfield Road ..........          8,605          1,962          7,853             16            388
2205-2255 Enterprise
  Drive ......................             --          2,304          9,259              3            243
280 Shuman Blvd (5)  .........             --          1,261          5,056             --            (27)
1701 Golf Road ...............         73,206         21,780         87,324             51          2,860
2675 N. Mayfair (5) ..........             --          1,613          6,443              1            552
4343 Commerce Court(3) .......             --          5,370         21,394            192          4,578
1600-1700 167th St.(3)........          2,798          1,073          4,291             70            703
1301 E. Tower Road(3) ........             --          1,005          4,020             60            614
4100 W. Madison Street........             --             41            169             --              7
371-385 N. Gary Ave.(3).......             --            218            871              5             45
33 North Dearborn ............         18,000          6,904         27,521              2          1,014
3800 North Wilke Road.........         19,551          5,994         23,977             23            142
208 South LaSalle Street......         45,148         12,310         49,042             20          4,048
122 South Michigan
  Avenue(6) ..................         14,000          5,952         23,728              4         (5,217)
2100 Swift Drive .............          5,100          1,391          4,862             --          3,223
6400 Shafer Court ............         14,077          4,385         17,843             --            477
1700 East Golf Road ..........         20,227          7,258         28,628             --          2,204
2000 York Road ...............         11,840          3,234         12,998             --          1,439
33 West Monroe ...............         77,500          5,619         95,850             --            494
National City Center .........         71,061         14,812         90,300             --            267
800-810 Jorie Blvd ...........         20,923          6,016         24,089             --             --
IBM Plaza ....................        160,000         39,726        208,898             --             --
Brush Hill Office Court.......          8,200          2,617         10,469             --             --
Pine Meadows Center ..........         10,979          2,155         21,505             --             --
                                      -------        ----------------------          --------------------
Total office .................        607,515        159,558        820,204          1,548         23,275
                                      -------        ----------------------          --------------------



INDUSTRIAL
East Chicago
   Enterprise ................             --             27            533             --             10
   Center (5)
EC I .........................          2,900             18            577             --              2
EC II ........................          5,000             18          2,360             --          1,830
EC III .......................          4,500             20          7,038             --            557
EC IV ........................          2,600             11          1,217             --              9



<CAPTION>
                                             Gross Amount Carried
                                             at December 31, 1999
                                  -------------------------------------------
                                                                                                Date of
                                                                               Accumulated     Acquisition(A)
                                               Buildings                       Depreciation   Contribution(C)
                                                  and                         at December 31,   Placed in
                                       Land      Improvements       Total         1999(2)       Service(P)
                                  ------------  -------------  -------------- --------------- ---------------
OFFICE
<S>                                <C>            <C>            <C>            <C>           <C>
201 4th Ave N (4) ............     $    1,700     $    9,766     $   11,466     $      858     Nov. 1997(C)
620 Market St. (4)  ..........            405          7,994          8,399            801     Nov. 1997(C)
4823 Old Kingston
  Pike (4) ...................            397          3,097          3,494            233     Nov. 1997(C)
625 Gay St. (4) ..............            568          8,469          9,037            956     Nov. 1997(C)
Triad Parking Facility (4)....            531          1,110          1,641             61     Nov. 1997(C)
1990 Algonquin Road ..........          1,550          6,473          8,023            407     Nov. 1997(A)
2010 Algonquin Road ..........            508          2,126          2,634            125     Nov. 1997(A)
1699 Woodfield Road ..........          1,978          8,241         10,219            448     Nov. 1997(A)
2205-2255 Enterprise Drive ...          2,307          9,502         11,809            539     Nov. 1997(A)
280 Shuman Blvd (5)  .........          1,261          5,029          6,290            288     Nov. 1997(A)
1701 Golf Road ...............         21,831         90,184        112,015          5,009     Dec. 1997(A)
2675 N. Mayfair (5) ..........          1,614          6,995          8,609            360     Dec. 1997(A)
4343 Commerce Court(3) .......          5,562         25,972         31,534          1,515     Nov. 1997(A)
1600-1700 167th St.(3)........          1,143          4,994          6,137            321     Nov. 1997(A)
1301 E. Tower Road(3).........          1,065          4,634          5,699            243     Nov. 1997(A)
4100 W. Madison Street........             41            176            217             13     Nov. 1997(A)
371-385 N. Gary Ave.(3).......            223            916          1,139             59     Nov. 1997(A)
33 North Dearborn ............          6,906         28,535         35,441          1,456     Jan. 1998(A)
3800 North Wilke Road.........          6,017         24,119         30,136          1,253     Feb. 1998(A)
208 South LaSalle Street......         12,330         53,090         65,420          2,782     Mar. 1998(A)
122 South Michigan
  Avenue(6) ..................          5,956         18,511         24,467            825     Apr. 1998(A)
2100 Swift Drive .............          1,391          8,085          9,476            236     Apr. 1998(A)
6400 Shafer Court ............          4,385         18,320         22,705            753     May 1998(A)
1700 East Golf Road ..........          7,258         30,832         38,090          1,358     June 1998(A)
2000 York Road ...............          3,234         14,437         17,671            632     June 1998(A)
33 West Monroe ...............          5,619         96,344        101,963          2,223     Jan. 1999(A)
National City Center .........         14,812         90,567        105,379          2,077     Feb. 1999(A)
800-810 Jorie Blvd ...........          6,016         24,089         30,105            233     Aug. 1999(A)
IBM Plaza ....................         39,726        208,898        248,624            259     Dec. 1999(A)
Brush Hill Office Court.......          2,617         10,469         13,086             15     Dec. 1999(A)
Pine Meadows Center ..........          2,155         21,505         23,660            105     Dec. 1999(P)
                                   -----------------------------------------------------------
Total office .................        161,106        843,479      1,004,585         26,443
                                   -----------------------------------------------------------
INDUSTRIAL
East Chicago
   Enterprise ................             27            543            570             92     Nov. 1997(C)
   Center (5)
EC I .........................             18            579            597             68     Nov. 1997(C)
EC II ........................             18          4,190          4,208            550     Nov. 1997(C)
EC III .......................             20          7,595          7,615            931     Nov. 1997(C)
EC IV ........................             11          1,226          1,237            217     Nov. 1997(C)


</TABLE>


                                 F-41
<PAGE>


                            PRIME GROUP REALTY TRUST

       SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (CONTINUED)

                             AS OF DECEMBER 31, 1999
                             (DOLLARS IN THOUSANDS)


<TABLE>
<CAPTION>


                                                                                     Cost Capitalized
                                                                                       Subsequent to
                                  Encumbrances(1)      Initial Cost                    Acquisition
                                  -------------- ------------------------    ------------------------------


                                                              Buildings                       Buildings
                                    December 31,                 and                             and
                                        1999         Land    Improvements         Land       Improvements
                                  -------------- ----------  ------------    -------------  ---------------
<S>                                   <C>             <C>          <C>           <C>                    <C>
INDUSTRIAL (CONTINUED)
Hammond Enterprise
   Center (5) ................     $     --       $   26       $     614          $   --        $     75
EC VI ........................        5,000           81           2,883              --             317
EC VI ........................        4,900          101           2,936              --           1,366
Chicago Enterprise
  Center (5) .................           --          748             975              --              33
EC VII .......................        7,200          517           4,968              --             392
EC VIII ......................        7,000          124           2,493              --             440
EC IX ........................        4,750          269           1,127              --              64
EC X .........................        4,300          248           2,836              --             320
Arlington Heights I (5).......           --          617           2,638              --              22
Arlington Heights II(5).......           --          456           2,062              --              17
Arlington Heights III(5)......           --          452           1,938              --              14
2160 McGraw Rd ...............           --          904           3,617              --           1,458
4849 Groveport ...............           --          507           2,014              --             417
2400 McGraw Rd ...............           --          348           1,382              --             164
5160 Blazer Memorial
  Pkwy .......................           --          470           1,866              --              97
600 London Rd ................           --          223             885              --              11
4411 Marketing Place..........           --          445           1,767              --              42
475 Superior Avenue (7).......           --        2,700          10,801              --             112
1051 N. Kirk Road(3) .........           --          911           3,325              --            (473)
4211 Madison Street(3) .......           --          690           2,745              --              10
200 E. Fullerton(3) ..........           --          525           2,100              --              10
350 Randy Road(3) ............           --          267           1,063              --              30
4300,4248,4250
   Madison Street(3) .........           --        1,147           4,588              --             110
370 Carol Lane(3) ............           --          527           2,107               9              47
388 Carol Lane(3) ............           --          332           1,329              --              25
342-346 Carol Lane(3) ........           --          600           2,398              --              72
343 Carol Lane(3) ............           --          350           1,398               6              24
11039 Gage Avenue(3) .........           --          191             767              --              10
11045 Gage Avenue(3) .........           --        1,274           5,092              --             215
1401 S. Jefferson(3) .........           --          171             685              --              22
4160-4190 W  Madison
  Street(3)...................           --          931           3,708              --             170
550 Kehoe Blvd.(3)  ..........           --          686           2,743              13              71
43-47 Hintz Road .............        5,960        1,943           7,888              --              --
320 Fullerton ................        5,124        2,286           7,771              --              --
                                 -----------   ---------------------------    ----------------------------
Total Industrial .............       59,234       22,161         109,234              28           8,112
                                 -----------   ---------------------------    ----------------------------
Other Corporate Assets........           --           --             476              --           6,498
                                 -----------   ---------------------------    ----------------------------
Total ........................    $ 666,749    $ 181,719       $ 929,914        $  1,576        $ 37,885
                                 ===========   ===========================    ============================

<CAPTION>

                                              Gross Amount Carried
                                              at December 31, 1999
                                   -------------------------------------------
                                                                                                    Date of
                                                                                  Accumulated    Acquisition(A)
                                                   Buildings                     Depreciation   Contribution(C)
                                                     and                        at December 31,     Placed in
                                        Land      Improvements       Total         1999(2)         Service(P)
                                   ------------  -------------  -------------- ---------------  ---------------
<S>                                      <C>         <C>              <C>              <C>            <C>
INDUSTRIAL (CONTINUED)
Hammond Enterprise
   Center (5) ................      $    26        $   689         $    715       $    136       Nov. 1997(C)
EC VI ........................           81          3,200            3,281            602       Nov. 1997(C)
EC VI ........................          101          4,302            4,403            616       Nov. 1997(C)
Chicago Enterprise
   Center (5) ................          748          1,008            1,756            330       Nov. 1997(C)
EC VII .......................          517          5,360            5,877            674       Nov. 1997(C)
EC VIII ......................          124          2,933            3,057          1,459       Nov. 1997(C)
EC IX ........................          269          1,191            1,460            165       Nov. 1997(C)
EC X .........................          248          3,156            3,404            542       Nov. 1997(C)
Arlington Heights I (5).......          617          2,660            3,277            455       Nov. 1997(C)
Arlington Heights II(5).......          456          2,079            2,535            255       Nov. 1997(C)
Arlington Heights III(5) .....          452          1,952            2,404            239       Nov. 1997(C)
2160 McGraw Rd ...............          904          5,075            5,979            513       Nov. 1997(A)
4849 Groveport ...............          507          2,431            2,938            138       Nov. 1997(A)
2400 McGraw Rd ...............          348          1,546            1,894             88       Nov. 1997(A)
5160 Blazer Memorial Pkwy ....          470          1,963            2,433            119       Nov. 1997(A)
600 London Rd ................          223            896            1,119             56       Nov. 1997(A)
4411 Marketing Place..........          445          1,809            2,254            111       Nov. 1997(A)
475 Superior Avenue (7).......        2,700         10,913           13,613            571       Nov. 1997(A)
1051 N. Kirk Road(3) .........          911          2,852            3,763            175       Nov. 1997(A)
4211 Madison Street(3)........          690          2,755            3,445            146       Nov. 1997(A)
200 E. Fullerton(3) ..........          525          2,110            2,635            114       Nov. 1997(A)
350 Randy Road(3) ............          267          1,093            1,360             60       Nov. 1997(A)
4300,4248,4250
   Madison Street(3) .........        1,147          4,698            5,845            255       Nov. 1997(A)
370 Carol Lane(3) ............          536          2,154            2,690            114       Nov. 1997(A)
388 Carol Lane(3) ............          332          1,354            1,686             72       Nov. 1997(A)
342-346 Carol Lane(3) ........          600          2,470            3,070            131       Nov. 1997(A)
343 Carol Lane(3) ............          356          1,422            1,778             75       Nov. 1997(A)
11039 Gage Avenue(3) .........          191            777              968             41       Nov. 1997(A)
11045 Gage Avenue(3) .........        1,274          5,307            6,581            275       Nov. 1997(A)
1401 S. Jefferson(3) .........          171            707              878             41       Nov. 1997(A)
4160-4190 W Madison
  Street(3) ..................          931          3,878            4,809            202       Nov. 1997(A)
550 Kehoe Blvd.(3)  ..........          699          2,814            3,513            148       Nov. 1997(A)
43-47 Hintz Road .............        1,943          7,888            9,831             66       Sept. 1999(A)
320 Fullerton ................        2,286          7,771           10,057             16       Dec. 1999(P)
                                 -----------------------------------------------------------
Total Industrial .............       22,189        117,346          139,535         10,858
                                 -----------------------------------------------------------
Other Corporate Assets........           --          6,974            6,974            676
                                 -----------------------------------------------------------
Total ........................    $ 183,295     $  967,799      $ 1,151,094     $   37,977
                                 ===========================================================


</TABLE>





                                 F-42
<PAGE>


                            PRIME GROUP REALTY TRUST

       SCHEDULE III - REAL ESTATE AND ACCUMULATED DEPRECIATION (CONTINUED)

                             AS OF DECEMBER 31, 1999
                             (DOLLARS IN THOUSANDS)

(1)      The Company has a $20,000 mortgage note payable that is collateralized
         by a mortgage note receivable and $46,553 of various mortgage notes
         payable that are collateralized by properties under development. See
         Note 4 to the Company's consolidated financial statements for a
         description of its mortgage notes payable, credit facilities and bonds
         payable.

(2)      Depreciation is calculated on the straight-line method over the
         estimated useful lives of assets, which are as follows:

<TABLE>
         <S>                                                               <C>
         Building and improvements                                         40 years
         Tenant improvements                                               Term of related leases
         Furniture and equipment (included in buildings and improvements)  3-7 years
</TABLE>

(3)      These properties are collateral for $46,342 in various mortgage notes
         payable.

(4)      These properties are collateral for a $35,000 line-of-credit, which had
         $7,527 drawn at December 31, 1999.

(5)      These properties are collateral for letters-of-credit that support
         certain industrial revenue bonds on other properties reflected in this
         table.

(6)      During 1999, the Company sold 161,710 square feet of the building,
         which has a total of 512,369 square feet.

(7)      This property is collateral for a $12,000 line-of-credit, all of
         which was drawn at December 31, 1999.

         The aggregate gross cost of the properties included above, for federal
income tax purposes, approximated $849,867 as of December 31, 1999. The Company
has $125,724 in property under development at December 31, 1999, of which
$74,348 was added during 1999 (same basis for federal income tax purposes).

         The following table reconciles our historical cost for the years ended
December 31, 1999 and 1998 and for the period from November 17, 1997 through
December 31, 1997

<TABLE>
<CAPTION>
                                                                                                                     PERIOD FROM
                                                                                                                     NOVEMBER 17,
                                                                                  YEAR ENDED DECEMBER 31,            1997 THROUGH
                                                                          --------------------------------------     DECEMBER 31,
                                                                                  1999              1998                 1997
                                                                          ----------------------------------------------------------
<S>                                                                           <C>                  <C>            <C>
Balance, beginning of period...........................................       $   843,031          $589,279       $           -
Additions during period................................................           584,561           253,752             589,279
Disposals during the period............................................          (276,498)                -                   -
                                                                          ==========================================================
Balance, close of period...............................................        $1,151,094          $843,031            $589,279
                                                                          ==========================================================

</TABLE>

                                 F-43
<PAGE>



         The following table reconciles the accumulated depreciation for the
years ended December 31, 1999 and 1998 and for the period from November 17, 1997
through December 31, 1997


<TABLE>
<CAPTION>
                                                                                                                     PERIOD FROM
                                                                                                                     NOVEMBER 17,
                                                                                    YEAR ENDED DECEMBER 31,          1997 THROUGH
                                                                          --------------------------------------     DECEMBER 31,
                                                                                   1999             1998                 1997
                                                                          ----------------------------------------------------------
<S>                                                                               <C>              <C>              <C>
Balance at beginning of period.........................................           $24,736          $  2,338         $         -
Depreciation and amortization for the period...........................            28,454            22,418               2,338
Disposals during the period............................................           (15,213)                -                   -
                                                                          ----------------------------------------------------------
Balance, close of period...............................................           $37,977           $24,756             $ 2,338
                                                                          ==========================================================

</TABLE>




                                 F-44



<PAGE>

                                                                    Exhibit 3.34

                    AMENDMENT NO. 29 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 29 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of October
15, 1999 by Prime Group Realty Trust, a Maryland real estate investment trust
("PGRT"), as the Managing General Partner of Prime Group Realty, L.P., a
Delaware limited partnership (the "Partnership"), and on behalf of the other
Partners (as hereinafter defined). Capitalized terms used but not otherwise
defined herein shall have the meanings given to such terms in the Amended and
Restated Agreement of Limited Partnership of the Partnership, dated as of
November 17, 1997, by and among PGRT and the other parties signatory thereto, as
amended thereafter (as so amended, the "Limited Partnership Agreement").

                              W I T N E S S E T H:

         WHEREAS, pursuant to Section 4.3.C. of the Limited Partnership
Agreement, the Managing General Partner may raise all or any portion of
Additional Funds required by the Partnership for the acquisition of additional
properties by accepting additional Capital Contributions, including the issuance
of Common Units for Capital Contributions that consist of property or interests
in property;

         WHEREAS, pursuant to that certain Exchange Agreement dated as of
December 15, 1997 by and between H Group LLC, a Delaware limited liability
company ("HG"), and the Partnership (the "Exchange Agreement"), HG agreed, among
other things, to grant to the Partnership an option (the "First Option") to
exchange the Underlying Option (as defined in the Exchange Agreement) for
220,000 Common Units of Limited Partner Interest (subject to adjustment pursuant
to the terms of the Exchange Agreement), which grant of the First Option
contemplated the transfer by the Partnership to HG of 5,000 Common Units of
Limited Partner Interest on the date thereof and, subject to the terms of the
First Option, 5,000 Common Units of Limited Partner Interest (subject to
adjustment pursuant to the terms of the Exchange Agreement) on the 15th day of
each month thereafter (each such transfer a "First Option Maintenance Transfer")
for such number of months set forth in the Exchange Agreement;

         WHEREAS, the Partnership has agreed to the terms of the grant by HG of
the First Option set forth in the Exchange Agreement and desires to effect the
First Option Maintenance Transfer due on October 15, 1999;

         WHEREAS, HG was admitted to the Partnership as an Additional Limited
Partner as of December 15, 1997 pursuant to Amendment No. 2 to the Limited
Partnership Agreement;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect the increase in outstanding Common Units resulting from the issuance
of Common Units to HG in connection with the First Option Maintenance Transfer
due on October 15, 1999; and


<PAGE>


         WHEREAS, Sections 2.4 and 12.3 of the Limited Partnership Agreement
authorize, among other things, the Managing General Partner, as true and lawful
agent and attorney-in fact, to execute, swear to, acknowledge, deliver, file and
record this Amendment on behalf of each Partner that has executed the Limited
Partnership Agreement and on behalf of the Partnership.

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

         Section 1. ACCEPTANCE OF CAPITAL CONTRIBUTION IN EXCHANGE FOR COMMON
UNITS. (a) PGRT, as Managing General Partner and on behalf of the Partnership,
hereby accepts the grant of the rights consisting of the First Option during the
twenty-third month of the term of the First Option from HG as a Capital
Contribution having a value on the date hereof of $100,000, in exchange for
6494.0 Common Units of Limited Partner Interest which are hereby issued by the
Partnership to HG pursuant to Section 4.3.C. of the Limited Partnership
Agreement, and which are evidenced by Common Unit Certificate No. 52 of the
Partnership.

                  (b) Each of the Common Units of Limited Partner Interest
issued to HG pursuant to this SECTION 1 shall have the same terms and provisions
of the Common Units of Limited Partner Interest issued by the Partnership on
November 17, 1997 except that (i) the Exchange Rights relating thereto may be
exercised at any time after December 15, 1999 (as opposed to November 17, 1998)
and (ii) such Common Units of Limited Partner Interest will be subject to the
Registration Rights Agreement dated as of December 15, 1997 by and among PGRT,
the Partnership and HG as opposed to the Registration Rights Agreement entered
into by PGRT and the Partnership on November 17, 1997.

         Section 2. AMENDMENT OF EXHIBIT A TO THE LIMITED PARTNERSHIP AGREEMENT.
Exhibit A to the Limited Partnership Agreement is hereby amended and restated to
reflect the aforementioned change(s) by deleting Exhibit A attached thereto in
its entirety, and by attaching in lieu thereof a replacement exhibit in the form
of EXHIBIT A attached hereto. From and after the effectiveness of this
Amendment, the amended and restated EXHIBIT A attached hereto shall be the only
Exhibit A to the Limited Partnership Agreement, unless and until it is hereafter
further amended.

         Section 3. REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

                  A. The Limited Partnership Agreement is hereby deemed to be
amended to the extent necessary to effect the matters contemplated by this
Amendment. Except as specifically provided for hereinabove, the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

                  B. The execution, delivery and effectiveness of this Amendment
shall not operate (i) as a waiver of any provision, right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited Partnership Agreement except as specifically set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 4. APPLICABLE LAW. This Amendment shall be construed in
accordance with and governed by the laws of the State of Delaware, without
regard to the principles of conflicts of law.


                                      -2-
<PAGE>


                                       AMENDMENT NO. 29 TO AMENDED AND
                                       RESTATED AGREEMENT OF LIMITED
                                       PARTNERSHIP OF PRIME GROUP REALTY, L.P.

         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the date first written above.

                                MANAGING GENERAL PARTNER:

                                PRIME GROUP REALTY TRUST, a
                                Maryland real estate investment trust

                                By:__________________________

                                Name:

                                Title:

                                LIMITED PARTNERS:

                                Each Limited Partner hereby executes
                                this Amendment to the Limited
                                Partnership Agreement.

                                By:      PRIME GROUP REALTY TRUST, a
                                         Maryland real estate investment
                                         trust, as attorney-in fact

                                         By:__________________________

                                         Name:

                                         Title:


                                      -3-
<PAGE>


                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS
<TABLE>
<CAPTION>
                                                 Number of               Capital
Managing General Partner                       Common Units            Contribution
- ------------------------                       ------------            ------------
<S>                                            <C>                      <C>
Prime Group Realty Trust                       15,135,827               **
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Richard S. Curto
                James F. Hoffman

General Partner
- ---------------
                                                  927,100               $18,542,000
The Nardi Group, L.L.C
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL 60162

Limited Partners
- ----------------
The Nardi Group, L.L.C                            328,182                $4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL 60162

Edward S. Hadesman                                388,677                $7,773,540
Trust Dated May 22, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614
Grandville/Northwestern                             9,750                  $195,000
Management Corporation
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614
</TABLE>
- ------------------

* As amended by Amendment No. 29 to the Amended and Restated Agreement of
  Limited Partnership of Prime Group Realty, L.P.

** This amount shall be inserted by the Managing General Partner.


<PAGE>


<TABLE>
<CAPTION>
                                                 Number of       Capital
Managing General Partner                       Common Units    Contribution
- ------------------------                       ------------    ------------
<S>                                            <C>              <C>

Carolyn B. Hadesman                                54,544       $1,090,880
Trust Dated May 21, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614

Lisa Hadesman 1991 Trust                          169,053       $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
Unit 1401
         Chicago, IL 60614

Cynthia Hadesman 1991 Trust                       169,053       $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614

Tucker B. Magid                                    33,085         $661,700
         545 Ridge Road
         Highland Park, IL 60035

Frances S. Shubert                                 28,805         $576,100
         511 Lynn Terrace
         Waukegan, IL 60085

Grandville Road Property, Inc.                      7,201         $144,020
         c/o Ms. Frances S
     Shubert
         511 Lynn Terrace
         Waukegan, IL 60085

Sky Harbor Associates                              62,149       $1,242,980
         c/o Howard I. Bernstein
         6541 North Kilbourn
         Lincolnwood, IL 60646

Jeffrey A. Patterson                              110,000       $2,200,000
         c/o Prime Group Realty Trust
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601

Primestone Investment Partners, L.P.            7,944,893             **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Paul A. Roehri
</TABLE>
- ----------------------------

** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-2
<PAGE>


<TABLE>
<CAPTION>
                                                 Number of       Capital
Managing General Partner                       Common Units    Contribution
- ------------------------                       ------------    ------------
<S>                                            <C>              <C>

Prime Group VI, L.P.                            304,097          $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                     133,050          $2,000,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL 60601
         Attn:  Norman Perlmutter
Ray R. Grinvalds                                  5,216            $104,320
         217 Deer Valley Drive
         Barrington, IL 60010

Warren H. John, as Trustee of the Warren         37,259            $745,180
H. John Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL 60614
</TABLE>


                                   EXHIBIT A-3
<PAGE>

<TABLE>
<CAPTION>
                                                  Number of              Capital
Managing General Partner                       Preferred Units        Contribution
- ------------------------                       ---------------        ------------
<S>                                   <C>                             <C>
Prime Group Realty Trust              2,000,000                          **
         77 West Wacker Drive         Convertible Preferred
                                      Units
         Suite 3900
         Chicago, IL  60601
         Attn:  Richard S. Curto
                James F. Hoffman

Prime Group Realty Trust              4,000,000                          **/
         77 West Wacker Drive         Series B Preferred                 --
                                      Units
         Suite 3900
         Chicago, IL  60601
         Attn:  Richard S. Curto
                James F. Hoffman
</TABLE>
- -------------------------

** This amount shall be inserted by the Managing General Partner.

                                   EXHIBIT A-4

<PAGE>

                                                                    Exhibit 3.35

                    AMENDMENT NO. 30 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 30 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of
November 15, 1999 by Prime Group Realty Trust, a Maryland real estate investment
trust ("PGRT"), as the Managing General Partner of Prime Group Realty, L.P., a
Delaware limited partnership (the "Partnership"), and on behalf of the other
Partners (as hereinafter defined). Capitalized terms used but not otherwise
defined herein shall have the meanings given to such terms in the Amended and
Restated Agreement of Limited Partnership of the Partnership, dated as of
November 17, 1997, by and among PGRT and the other parties signatory thereto, as
amended thereafter (as so amended, the "Limited Partnership Agreement").

                              W I T N E S S E T H:

         WHEREAS, pursuant to Section 4.3.C. of the Limited Partnership
Agreement, the Managing General Partner may raise all or any portion of
Additional Funds required by the Partnership for the acquisition of additional
properties by accepting additional Capital Contributions, including the issuance
of Common Units for Capital Contributions that consist of property or interests
in property;

         WHEREAS, pursuant to that certain Exchange Agreement dated as of
December 15, 1997 by and between H Group LLC, a Delaware limited liability
company ("HG"), and the Partnership (the "Exchange Agreement"), HG agreed, among
other things, to grant to the Partnership an option (the "First Option") to
exchange the Underlying Option (as defined in the Exchange Agreement) for
220,000 Common Units of Limited Partner Interest (subject to adjustment pursuant
to the terms of the Exchange Agreement), which grant of the First Option
contemplated the transfer by the Partnership to HG of 5,000 Common Units of
Limited Partner Interest on the date thereof and, subject to the terms of the
First Option, 5,000 Common Units of Limited Partner Interest (subject to
adjustment pursuant to the terms of the Exchange Agreement) on the 15th day of
each month thereafter (each such transfer a "First Option Maintenance Transfer")
for such number of months set forth in the Exchange Agreement;

         WHEREAS, the Partnership has agreed to the terms of the grant by HG of
the First Option set forth in the Exchange Agreement and desires to effect the
First Option Maintenance Transfer due on November 15, 1999;

         WHEREAS, HG was admitted to the Partnership as an Additional Limited
Partner as of December 15, 1997 pursuant to Amendment No. 2 to the Limited
Partnership Agreement;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect the increase in outstanding Common Units resulting from the issuance
of Common Units to HG in connection with the First Option Maintenance Transfer
due on November 15, 1999; and


<PAGE>


         WHEREAS, Sections 2.4 and 12.3 of the Limited Partnership Agreement
authorize, among other things, the Managing General Partner, as true and lawful
agent and attorney-in fact, to execute, swear to, acknowledge, deliver, file and
record this Amendment on behalf of each Partner that has executed the Limited
Partnership Agreement and on behalf of the Partnership.

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

         Section 1. ACCEPTANCE OF CAPITAL CONTRIBUTION IN EXCHANGE FOR COMMON
UNITS. (a) PGRT, as Managing General Partner and on behalf of the Partnership,
hereby accepts the grant of the rights consisting of the First Option during the
twenty-fourth month of the term of the First Option from HG as a Capital
Contribution having a value on the date hereof of $100,000, in exchange for
7020.0 Common Units of Limited Partner Interest which are hereby issued by the
Partnership to HG pursuant to Section 4.3.C. of the Limited Partnership
Agreement, and which are evidenced by Common Unit Certificate No. 53 of the
Partnership.

                  (b) Each of the Common Units of Limited Partner Interest
issued to HG pursuant to this SECTION 1 shall have the same terms and provisions
of the Common Units of Limited Partner Interest issued by the Partnership on
November 17, 1997 except that (i) the Exchange Rights relating thereto may be
exercised at any time after December 15, 1999 (as opposed to November 17, 1998)
and (ii) such Common Units of Limited Partner Interest will be subject to the
Registration Rights Agreement dated as of December 15, 1997 by and among PGRT,
the Partnership and HG as opposed to the Registration Rights Agreement entered
into by PGRT and the Partnership on November 17, 1997.

         Section 2. AMENDMENT OF EXHIBIT A TO THE LIMITED PARTNERSHIP AGREEMENT.
Exhibit A to the Limited Partnership Agreement is hereby amended and restated to
reflect the aforementioned change(s) by deleting Exhibit A attached thereto in
its entirety, and by attaching in lieu thereof a replacement exhibit in the form
of EXHIBIT A attached hereto. From and after the effectiveness of this
Amendment, the amended and restated EXHIBIT A attached hereto shall be the only
EXHIBIT A to the Limited Partnership Agreement, unless and until it is hereafter
further amended.

         Section 3. REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

                  A. The Limited Partnership Agreement is hereby deemed to be
amended to the extent necessary to effect the matters contemplated by this
Amendment. Except as specifically provided for hereinabove, the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

                  B. The execution, delivery and effectiveness of this Amendment
shall not operate (i) as a waiver of any provision, right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited Partnership Agreement except as specifically set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 4. APPLICABLE LAW. This Amendment shall be construed in
accordance with and governed by the laws of the State of Delaware, without
regard to the principles of conflicts of law.


                                      -2-
<PAGE>


                                         AMENDMENT NO. 30 TO AMENDED AND
                                         RESTATED AGREEMENT OF LIMITED
                                         PARTNERSHIP OF PRIME GROUP REALTY, L.P.

         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the date first written above.

                                          MANAGING GENERAL PARTNER:

                                          PRIME GROUP REALTY TRUST, a
                                          Maryland real estate investment trust

                                          By:__________________________

                                          Name:

                                          Title:

                                          LIMITED PARTNERS:

                                          Each Limited Partner hereby executes
                                          this Amendment to the Limited
                                          Partnership Agreement.

                                          By:   PRIME GROUP REALTY TRUST, a
                                                Maryland real estate investment
                                                trust, as attorney-in fact

                                                By:__________________________

                                                Name:

                                                Title:


                                      -3-
<PAGE>


                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS
<TABLE>
<CAPTION>
                                             Number of            Capital
Managing General Partner                   Common Units         Contribution
<S>                                         <C>                 <C>
Prime Group Realty Trust                    15,135,827               **
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Richard S. Curto
                James F. Hoffman

GENERAL PARTNER
                                               927,100           $18,542,000
The Nardi Group, L.L.C
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL 60162

LIMITED PARTNERS
The Nardi Group, L.L.C                         328,182            $4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL 60162

Edward S. Hadesman                             388,677            $7,773,540
Trust Dated May 22, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614
Grandville/Northwestern                          9,750              $195,000
Management Corporation
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614
</TABLE>

- --------------------------
* As amended by Amendment No. 30 to the Amended and Restated Agreement
of Limited Partnership of Prime Group Realty, L.P.

** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-1
<PAGE>

<TABLE>
<CAPTION>

                                                 Number of       Capital
Limited Partners                               Common Units    Contribution
<S>                                               <C>           <C>
Carolyn B. Hadesman                               54,544        $1,090,880
Trust Dated May 21, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614

Lisa Hadesman 1991 Trust                         169,053        $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
Unit 1401
         Chicago, IL 60614

Cynthia Hadesman 1991 Trust                      169,053        $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
       Unit 1401
         Chicago, IL 60614

Tucker B. Magid                                   33,085          $661,700
         545 Ridge Road
         Highland Park, IL 60035

Frances S. Shubert                                28,805          $576,100
         511 Lynn Terrace
         Waukegan, IL 60085

Grandville Road Property, Inc.                     7,201          $144,020
         c/o Ms. Frances S
     Shubert
         511 Lynn Terrace
         Waukegan, IL 60085

Sky Harbor Associates                             62,149        $1,242,980
         c/o Howard I. Bernstein
         6541 North Kilbourn
         Lincolnwood, IL 60646

Jeffrey A. Patterson                             110,000        $2,200,000
         c/o Prime Group Realty Trust
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601

Primestone Investment Partners, L.P.           7,944,893         **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Paul A. Roehri
</TABLE>
- -------------------------------------
** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-2
<PAGE>


<TABLE>
<CAPTION>
                                                  Number of          Capital
Limited Partners                                Common Units       Contribution
<S>                                                 <C>             <C>
Prime Group VI, L.P.                                304,097         $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                         140,070         $2,100,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL 60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                      5,216           $104,320
         217 Deer Valley Drive
         Barrington, IL 60010

Warren H. John, as Trustee of the Warren H. John     37,259           $745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL 60614
</TABLE>


                                   EXHIBIT A-3
<PAGE>


<TABLE>
<CAPTION>
                                                 Number of                  Capital
Managing General Partner                      Preferred Units            Contribution

<S>                                            <C>                          <C>
Prime Group Realty Trust                       2,000,000                    **
         77 West Wacker Drive                  Convertible Preferred
         Suite 3900                            Units
         Chicago, IL 60601
         Attn:  Richard S. Curto
                James F. Hoffman

Prime Group Realty Trust                       4,000,000                    **/
         77 West Wacker Drive                  Series B Preferred Units
         Suite 3900
         Chicago, IL 60601
         Attn:  Richard S. Curto
                James F. Hoffman
</TABLE>
- ---------------------------------
** This amount shall be inserted by the Managing General Partner.

                                   EXHIBIT A-4

<PAGE>

                                                                    Exhibit 3.36

                    AMENDMENT NO. 31 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 31 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of
December 15, 1999 by Prime Group Realty Trust, a Maryland real estate investment
trust ("PGRT"), as the Managing General Partner of Prime Group Realty, L.P., a
Delaware limited partnership (the "Partnership"), and on behalf of the other
Partners (as hereinafter defined). Capitalized terms used but not otherwise
defined herein shall have the meanings given to such terms in the Amended and
Restated Agreement of Limited Partnership of the Partnership, dated as of
November 17, 1997, by and among PGRT and the other parties signatory thereto, as
amended thereafter (as so amended, the "Limited Partnership Agreement").

                              W I T N E S S E T H:

         WHEREAS, pursuant to Section 4.3.C. of the Limited Partnership
Agreement, the Managing General Partner may raise all or any portion of
Additional Funds required by the Partnership for the acquisition of additional
properties by accepting additional Capital Contributions, including the issuance
of Common Units for Capital Contributions that consist of property or interests
in property;

         WHEREAS, pursuant to that certain Exchange Agreement dated as of
December 15, 1997 by and between H Group LLC, a Delaware limited liability
company ("HG"), and the Partnership (the "Exchange Agreement"), HG agreed, among
other things, to grant to the Partnership an option (the "First Option") to
exchange the Underlying Option (as defined in the Exchange Agreement) for
220,000 Common Units of Limited Partner Interest (subject to adjustment pursuant
to the terms of the Exchange Agreement), which grant of the First Option
contemplated the transfer by the Partnership to HG of 5,000 Common Units of
Limited Partner Interest on the date thereof and, subject to the terms of the
First Option, 5,000 Common Units of Limited Partner Interest (subject to
adjustment pursuant to the terms of the Exchange Agreement) on the 15th day of
each month thereafter (each such transfer a "First Option Maintenance Transfer")
for such number of months set forth in the Exchange Agreement;

         WHEREAS, the Partnership has agreed to the terms of the grant by HG of
the First Option set forth in the Exchange Agreement and desires to effect the
First Option Maintenance Transfer due on December 15, 1999;

         WHEREAS, HG was admitted to the Partnership as an Additional Limited
Partner as of December 15, 1997 pursuant to Amendment No. 2 to the Limited
Partnership Agreement;

         WHEREAS, the Partners desire to amend the Limited Partnership Agreement
to reflect the increase in outstanding Common Units resulting from the issuance
of Common Units to HG in connection with the First Option Maintenance Transfer
due on December 15, 1999; and


<PAGE>


         WHEREAS, Sections 2.4 and 12.3 of the Limited Partnership Agreement
authorize, among other things, the Managing General Partner, as true and lawful
agent and attorney-in fact, to execute, swear to, acknowledge, deliver, file and
record this Amendment on behalf of each Partner that has executed the Limited
Partnership Agreement and on behalf of the Partnership.

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

         Section 1. ACCEPTANCE OF CAPITAL CONTRIBUTION IN EXCHANGE FOR COMMON
UNITS. (a) PGRT, as Managing General Partner and on behalf of the Partnership,
hereby accepts the grant of the rights consisting of the First Option during the
twenty-fifth month of the term of the First Option from HG as a Capital
Contribution having a value on the date hereof of $100,000, in exchange for
7390.0 Common Units of Limited Partner Interest which are hereby issued by the
Partnership to HG pursuant to Section 4.3.C. of the Limited Partnership
Agreement, and which are evidenced by Common Unit Certificate No. 54 of the
Partnership.

                  (b) Each of the Common Units of Limited Partner Interest
issued to HG pursuant to this SECTION 1 shall have the same terms and provisions
of the Common Units of Limited Partner Interest issued by the Partnership on
November 17, 1997 except that (i) the Exchange Rights relating thereto may be
exercised at any time after December 15, 1999 (as opposed to November 17, 1998)
and (ii) such Common Units of Limited Partner Interest will be subject to the
Registration Rights Agreement dated as of December 15, 1997 by and among PGRT,
the Partnership and HG as opposed to the Registration Rights Agreement entered
into by PGRT and the Partnership on November 17, 1997.

         Section 2. AMENDMENT OF EXHIBIT A TO THE LIMITED PARTNERSHIP AGREEMENT.
Exhibit A to the Limited Partnership Agreement is hereby amended and restated to
reflect the aforementioned change(s) by deleting Exhibit A attached thereto in
its entirety, and by attaching in lieu thereof a replacement exhibit in the form
of EXHIBIT A attached hereto. From and after the effectiveness of this
Amendment, the amended and restated EXHIBIT A attached hereto shall be the only
Exhibit A to the Limited Partnership Agreement, unless and until it is hereafter
further amended.

         Section 3. REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

                  A. The Limited Partnership Agreement is hereby deemed to be
amended to the extent necessary to effect the matters contemplated by this
Amendment. Except as specifically provided for hereinabove, the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

                  B. The execution, delivery and effectiveness of this Amendment
shall not operate (i) as a waiver of any provision, right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited Partnership Agreement except as specifically set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 4. APPLICABLE LAW. This Amendment shall be construed in
accordance with and governed by the laws of the State of Delaware, without
regard to the principles of conflicts of law.


                                      -2-
<PAGE>


                                       AMENDMENT NO. 31 TO AMENDED AND
                                       RESTATED AGREEMENT OF LIMITED
                                       PARTNERSHIP OF PRIME GROUP REALTY, L.P.

         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the date first written above.

                                     MANAGING GENERAL PARTNER:

                                     PRIME GROUP REALTY TRUST, a
                                     Maryland real estate investment trust

                                     By:__________________________

                                     Name:

                                     Title:

                                     LIMITED PARTNERS:

                                     Each Limited Partner hereby executes
                                     this Amendment to the Limited
                                     Partnership Agreement.

                                     By:      PRIME GROUP REALTY TRUST, a
                                              Maryland real estate investment
                                              trust, as attorney-in fact

                                              By:__________________________

                                              Name:

                                              Title:


                                      -3-
<PAGE>


                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS
<TABLE>
<CAPTION>
                                               Number of            Capital
Managing General Partner                     Common Units         Contribution
<S>                                            <C>                <C>
Prime Group Realty Trust                       15,135,827            **
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Richard S. Curto
                James F. Hoffman

GENERAL PARTNER
                                                  927,100          $18,542,000
The Nardi Group, L.L.C
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL 60162

The Nardi Group, L.L.C                            328,182           $4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL 60162

Edward S. Hadesman
Trust Dated May 22, 1992                          388,677           $7,773,540
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL 60614

Grandville/Northwestern                             9,750             $195,000
Management Corporation
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL 60614
</TABLE>
- ----------------------
* As amended by Amendment No. 31 to the Amended and Restated Agreement
of Limited Partnership of Prime Group Realty, L.P.

** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-1
<PAGE>


<TABLE>
<CAPTION>
                                               Number of          Capital
Limited Partners                             Common Units       Contribution
<S>                                              <C>              <C>
Carolyn B. Hadesman                              54,544           $1,090,880
Trust Dated May 21, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL 60614

Lisa Hadesman 1991 Trust                        169,053           $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL 60614

Cynthia Hadesman 1991 Trust                     169,053           $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL 60614

Tucker B. Magid                                  33,085             $661,700
         545 Ridge Road
         Highland Park, IL 60035

Frances S. Shubert                               28,805             $576,100
         511 Lynn Terrace
         Waukegan, IL 60085

Grandville Road Property, Inc.                    7,201             $144,020
         c/o Ms. Frances S. Shubert
         511 Lynn Terrace
         Waukegan, IL 60085

Sky Harbor Associates                            62,149           $1,242,980
         c/o Howard I. Bernstein
         6541 North Kilbourn
         Lincolnwood, IL 60646
</TABLE>


                                   EXHIBIT A-2
<PAGE>


<TABLE>
<CAPTION>
                                                           Number of              Capital
Limited Partners                                         Common Units           Contribution

<S>                                                           <C>               <C>
Jeffrey A. Patterson                                          110,000           $2,200,000
         c/o Prime Group Realty Trust
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601

Primestone Investment Partners, L.P.                        7,944,893            **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                          304,097           $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 3900
         Chicago, IL 60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                                   147,460           $2,200,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL 60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                                5,216             $104,320
         217 Deer Valley Drive
         Barrington, IL 60010

Warren H. John, as Trustee of the Warren H. John               37,259             $745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL 60614
</TABLE>
- -----------------------------------
** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-3
<PAGE>


<TABLE>
<CAPTION>
                                           Number of                       Capital
Managing General Partner                Preferred Units                 Contribution
<S>                                     <C>                             <C>
Prime Group Realty Trust                2,000,000                          **
         77 West Wacker Drive           Convertible Preferred
         Suite 3900                     Units
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman

Prime Group Realty Trust                4,000,000                          **/
         77 West Wacker Drive           Series B Preferred
         Suite 3900                     Units
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman
</TABLE>


- --------------------------------
** This amount shall be inserted by the Managing General Partner.

<PAGE>

                                                                    Exhibit 3.37

                    AMENDMENT NO. 32 TO AMENDED AND RESTATED
                        AGREEMENT OF LIMITED PARTNERSHIP
                           OF PRIME GROUP REALTY, L.P.

         This AMENDMENT NO. 32 TO AMENDED AND RESTATED AGREEMENT OF LIMITED
PARTNERSHIP OF PRIME GROUP REALTY, L.P. (this "Amendment") is made as of
December 30, 1999, by Prime Group Realty Trust, a Maryland real estate
investment trust ("PGRT"), as the Managing General Partner of Prime Group
Realty, L.P., a Delaware limited partnership (the "Partnership"), and on behalf
of the other Partners (as hereinafter defined). Capitalized terms used but not
otherwise defined herein shall have the meanings given to such terms in the
Amended and Restated Agreement of Limited Partnership of the Partnership, dated
as of November 17, 1997, by and among PGRT and the other parties signatory
thereto, as amended thereafter (as so amended, the "Limited Partnership
Agreement").

                              W I T N E S S E T H:

         WHEREAS, pursuant to Section 4.3.C. of the Limited Partnership
Agreement, the Managing General Partner may raise all or any portion of
Additional Funds required by the Partnership for the acquisition of additional
properties by accepting additional Capital Contributions, including the issuance
of Common Units for Capital Contributions that consist of property or interests
in property;

         WHEREAS, pursuant to that Real Estate Sales Contract, dated as of
October 20, 1997, by and among The Prime Group, Inc., an Illinois corporation,
Prime Group Realty Trust, a Maryland real estate investment trust, Prime Group
Realty, L.P., a Delaware limited partnership and the Contributors named therein
(the "Agreement"), the Partnership agreed to purchase the Vacant Parcels 4 and
11 in Carol Stream Industrial Business Park, Carol Stream, Illinois (the
"Property") upon the fulfillment of certain conditions;

         WHEREAS, the conditions of the Agreement having been fulfilled, the
Partnership is acquiring the Property in return for issuing Common Units of
Limited Partner Interest to Carol Stream Industrial Park Joint Venture; and

         WHEREAS, Sections 2.4 and 12.3 of the Limited Partnership Agreement
authorize, among other things, the Managing General Partner, as true and lawful
agent and attorney-in fact, to execute, swear to, acknowledge, deliver, file and
record this Amendment on behalf of each Partner that has executed the Limited
Partnership Agreement and on behalf of the Partnership.

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

         Section 1. ACCEPTANCE OF CAPITAL CONTRIBUTION IN EXCHANGE FOR COMMON
UNITS. (a) PGRT, as Managing General Partner and on behalf of the Partnership,
hereby accepts from Carol


<PAGE>


Stream Industrial Park Joint Venture the grant of all of its right, title and
interest in the Property, a legal description of which is attached hereto as
EXHIBIT 1, as a Capital Contribution in exchange for 151,621 Common Units of
Limited Partner Interest which are hereby issued by the Partnership to Carol
Stream Industrial Park Joint Venture pursuant to Section 4.3.C of the Limited
Partnership Agreement, and which are evidenced by Common Unit Certificate No. 58
of the Partnership.

                  (b) Each of the Common Units of Limited Partner Interest
issued to Carol Stream Industrial Park Joint Venture pursuant to this SECTION 2
shall have the same terms and provisions as the Common Units of Limited Partner
Interest issued by the Partnership on November 17, 1997 except that the Exchange
Rights relating thereto may be exercised only after the first (1st) anniversary
of their issuance (as opposed to November 17, 1998).

         Section 2. AMENDMENT OF EXHIBIT A TO THE LIMITED PARTNERSHIP AGREEMENT.
Exhibit A to the Limited Partnership Agreement is hereby amended and restated to
reflect the aforementioned change(s) by deleting Exhibit A attached thereto in
its entirety, and by attaching in lieu thereof a replacement exhibit in the form
of EXHIBIT A attached hereto. From and after the effectiveness of this
Amendment, the amended and restated EXHIBIT A attached hereto shall be the only
EXHIBIT A to the Limited Partnership Agreement, unless and until it is hereafter
further amended.

         Section 3. REFERENCE TO AND EFFECT ON THE LIMITED PARTNERSHIP
AGREEMENT.

                  A. The Limited Partnership Agreement is hereby deemed to be
amended to the extent necessary to effect the matters contemplated by this
Amendment. Except as specifically provided for hereinabove, the provisions of
the Limited Partnership Agreement shall remain in full force and effect.

                  B. The execution, delivery and effectiveness of this Amendment
shall not operate (i) as a waiver of any provision, right or obligation of the
Managing General Partner, the other General Partner or any Limited Partner under
the Limited Partnership Agreement except as specifically set forth herein or
(ii) as a waiver or consent to any subsequent action or transaction.

         Section 4. APPLICABLE LAW. This Amendment shall be construed in
accordance with and governed by the laws of the State of Delaware, without
regard to the principles of conflicts of law.

                            [signature page follows]


                                      -2-
<PAGE>


                                        AMENDMENT NO. 32 TO AMENDED AND
                                        RESTATED AGREEMENT OF LIMITED
                                        PARTNERSHIP OF PRIME GROUP REALTY, L.P.

         IN WITNESS WHEREOF, the parties hereto have executed this Amendment as
of the date first written above.

                               MANAGING GENERAL PARTNER:

                               PRIME GROUP REALTY TRUST, a
                               Maryland real estate investment trust

                               By:_________________________

                               Name: ______________________

                               Title:________________________

                               LIMITED PARTNERS:

                               Each Limited Partner hereby executes
                               this Amendment to the Limited
                               Partnership Agreement.

                               By:      PRIME GROUP REALTY TRUST, a
                                        Maryland real estate investment
                                        trust, as attorney-in fact

                                        By:__________________________

                                        Name: _______________________

                                        Title:_________________________


                                      -3-
<PAGE>


As to Section 1 hereof,

ACKNOWLEDGED AND AGREED

CAROL STREAM INDUSTRIAL PARK JOINT
VENTURE, an Illinois general partnership

By:      NARCO ENTERPRISES, INC.,
         an Illinois corporation
         Its Managing General Partner

         By:   ______________________________
                           Stephen J. Nardi
                           President


                                      -4-
<PAGE>


                                   EXHIBIT A*

               PARTNERS, NUMBER OF UNITS AND CAPITAL CONTRIBUTIONS
<TABLE>
<CAPTION>
                                                   Number of         Capital
Managing General Partner                         Common Units      Contribution
<S>                                               <C>               <C>
Prime Group Realty Trust                          15,189,438           **
         77 West Wacker Drive
         Suite 3900
         Chicago, IL  60601
         Attn:  Richard S. Curto
                James F. Hoffman

GENERAL PARTNER

The Nardi Group, L.L.C.                             927,100          $18,542,000
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

LIMITED PARTNERS

The Nardi Group, L.L.C.                             328,182           $4,906,061
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Carol Stream Industrial Park Joint Venture          151,621           $2,146,374
         c/o Stephen J. Nardi
         4100 Madison Street
         Hillside, IL  60162

Edward S. Hadesman
Trust Dated May 22, 1992                            398,427           $7,968,540
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614
</TABLE>

- --------------------------
* As amended by Amendment No. 32 to the Amended and Restated Agreement of
Limited Partnership of Prime Group Realty, L.P.

** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-1
<PAGE>

<TABLE>
<CAPTION>
                                                  Number of          Capital
Limited Partners                                Common Units       Contribution
<S>                                                <C>               <C>
Carolyn B. Hadesman                                54,544            $1,090,880
Trust Dated May 21, 1992
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614

Lisa Hadesman 1991 Trust                           169,053           $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614

Cynthia Hadesman 1991 Trust                        169,053           $3,381,060
         c/o Edward S. Hadesman
         2500 North Lakeview
         Unit 1401
         Chicago, IL  60614

Tucker B. Magid                                     33,085             $661,700
         545 Ridge Road
         Highland Park, IL 60035

Frances S. Shubert                                  36,006             $720,120
         511 Lynn Terrace
         Waukegan, IL  60085

Sky Harbor Associates                               62,149           $1,242,980
         c/o Howard I. Bernstein
         6541 North Kilbourn
         Lincolnwood, IL  60646

Jeffrey A. Patterson                               110,000           $2,200,000
         c/o Prime Group Realty Trust
         77 West Wacker Drive
         Suite 3900
         Chicago, IL  60601
</TABLE>


                                   EXHIBIT A-2
<PAGE>

<TABLE>
<CAPTION>
                                                   Number of         Capital
Limited Partners                                 Common Units      Contribution

<S>                                                 <C>             <C>
Primestone Investment Partners, L.P.                7,944,893         **
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL 60601
         Attn:  Paul A. Roehri

Prime Group VI, L.P.                                  304,097         $6,050,500
         c/o The Prime Group, Inc.
         77 West Wacker Drive
         Suite 4200
         Chicago, IL 60601
         Attn:  Michael W. Reshcke
                Robert J. Rudnik

H Group LLC                                            93,849         $1,400,000
         c/o Heitman Financial Ltd.
         180 N. LaSalle
         Suite 3600
         Chicago, IL 60601
         Attn:  Norman Perlmutter

Ray R. Grinvalds                                        2,608            $52,160
         714 Blaine Court
         Schaumburg, IL 60173

Sandra F. Grinvalds                                     2,608            $52,160
         714 Blaine Court
         Schaumburg, IL 60173

Warren H. John, as Trustee of the Warren H. John       37,259           $745,180
Trust dated December 18, 1998
         1730 N. Clark Street
         Chicago, IL 60614
</TABLE>

- --------------------------
** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-3
<PAGE>


<TABLE>
<CAPTION>
                                            Number of                       Capital
Managing General Partner                 Preferred Units                 Contribution

<S>                                      <C>                             <C>
Prime Group Realty Trust                 2,000,000                                 **
         77 West Wacker Drive            Convertible Preferred
         Suite 3900                      Units
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman

Prime Group Realty Trust                 4,000,000                                **/
         77 West Wacker Drive            Series B Preferred Units
         Suite 3900
         Chicago, IL  60601
         Attn:    Richard S. Curto
                  James F. Hoffman
</TABLE>

- ----------------------
** This amount shall be inserted by the Managing General Partner.


                                   EXHIBIT A-4

<PAGE>

                                                                    Exhibit 10.1




                                 LOAN AGREEMENT




                                     Between

                           330 N. WABASH AVENUE, L.L.C
                              having an address at
                          c/o Prime Group Realty Trust
                        77 West Wacker Drive, Suite 3900
                             Chicago, Illinois 60601
                                  ("BORROWER")

                                      -and-

                           WESTDEUTSCHE IMMOBILIENBANK
                              having an address at
                                 Wilhelm Theodor
                               Romheld Strasse 24,
                                   55130 Mainz
                           Federal Republic of Germany
                              ("AGENT" or "LENDER")

                                      -and-


                       Merrill Lynch Mortgage Capital Inc.
                              having an address at
                             World Financial Center,
                                  North Tower,
                                   10th Floor
                                250 Vesey Street
                            New York, New York 10281
                                   ("LENDER")


                   (each Lender together with Agent "LENDERS")


                         Dated: as of December 13, 1999

<PAGE>





                                TABLE OF CONTENTS

<TABLE>
<CAPTION>

                                                                                Page
<S>               <C>                                                            <C>
                                    ARTICLE 1
                                  DEFINITIONS

Section 1.1       Definitions ....................................................1

                                    ARTICLE 2
                                    THE LOAN

Section 2.1       Loan ..........................................................18
Section 2.2       Conditions Precedent ..........................................18
Section 2.3       Interest ......................................................22
Section 2.4       The Note ......................................................23
Section 2.5       The Mortgage and Collateral ...................................23
Section 2.6       Default Rate ..................................................24
Section 2.7       Repayment of Loan .............................................24
Section 2.8       Prepayments ...................................................25
Section 2.9       Funding Loss ..................................................26
Section 2.10      Taxes .........................................................27
Section 2.11      Payments ......................................................28
Section 2.12      Distribution to Lenders .......................................28
Section 2.13      Increased Costs; Overriding Events ............................29
Section 2.14      Commitment Fee ................................................31
Section 2.15      Arrangement Fee ...............................................31
Section 2.17      Lending Office ................................................31

                                    ARTICLE 3
                         REPRESENTATIONS AND WARRANTIES

Section 3.1       Good Standing of Borrower and its Managing Members ............31
Section 3.2       Authority of Borrower .........................................32
Section 3.3       Authorizations ................................................32
Section 3.4       Binding Agreement .............................................32
Section 3.5       Litigation ....................................................32
Section 3.6       No Conflicts ..................................................33
Section 3.7       Financial Conditions ..........................................33
Section 3.8       Employee Benefit Plans ........................................33
Section 3.9       Governmental Plan .............................................33
</TABLE>

<PAGE>

                                       ii

<TABLE>
<S>               <C>                                                            <C>
Section 3.10      Investment Company ............................................33
Section 3.11      Hazardous Materials ...........................................34
Section 3.12      Solvency ......................................................34
Section 3.13      Borrower's Address ............................................34
Section 3.14      Foreign Person ................................................34
Section 3.15      Bankruptcy ....................................................35
Section 3.16      Compliance with Laws ..........................................35
Section 3.17      Utility Service ...............................................35
Section 3.18      Access ........................................................35
Section 3.19      Insurance .....................................................35
Section 3.20      Rent Roll .....................................................36
Section 3.21      No Reliance on Agent or Lenders ...............................36

                                    ARTICLE 4
                       AFFIRMATIVE AND NEGATIVE COVENANTS

Section 4.1       Affirmative Covenants .........................................36
Section 4.2       Negative Covenants ............................................43

                                    ARTICLE 5
                                    DEFAULT

Section 5.1       Events of Default .............................................47
Section 5.2       Remedies ......................................................49
Section 5.3       Remedies Cumulative and Concurrent ............................49
Section 5.4       Waiver, Delay or Omission .....................................49
Section 5.5       Indemnity .....................................................49

                                    ARTICLE 6
                          LIMITED RECOURSE OBLIGATIONS

Section 6.1       Limited Recourse ..............................................52

                                    ARTICLE 7
                                   THE AGENT

Section 7.1       Performance by Agent ..........................................55
Section 7.2       Actions .......................................................56
Section 7.3       Nonliability of Agent and Lenders .............................56
Section 7.4       Authorization and Action ......................................57
Section 7.5       Withholding Exemption Certificates ............................59
</TABLE>

<PAGE>

                                      iii

<TABLE>
<S>               <C>                                                            <C>
Section 7.6       Agent's Reliance, Etc .........................................59
Section 7.8       Ratable Sharing ...............................................61

                                    ARTICLE 8
                                 MISCELLANEOUS

Section 8.1       Fees and Expenses .............................................62
Section 8.2       Cumulative Rights and No Waiver ...............................62
Section 8.3       Notices .......................................................62
Section 8.4       Severability ..................................................62
Section 8.5       Binding Effect ................................................63
Section 8.6       Execution in Counterparts .....................................63
Section 8.7       Time of the Essence ...........................................63
Section 8.8       Immunity ......................................................63
Section 8.9       Governmental Regulation of Lender .............................63
Section 8.10      Modification, Waiver, Consent .................................63
Section 8.11      Entire Agreement ..............................................64
Section 8.12      Assignment ....................................................64
Section 8.13      Applicable Law ................................................65
Section 8.14      Usury .........................................................65
Section 8.15      Consent to Jurisdiction .......................................65
Section 8.16      Monies ........................................................66
Section 8.17      Jury Trial ....................................................66

EXHIBIT A         Description of Land
EXHIBIT B         Leases
EXHIBIT C         Principal Repayment Schedule
</TABLE>



<PAGE>


                                 LOAN AGREEMENT


                  This Loan Agreement (this "AGREEMENT") is made and entered
into as of this 13th day of December 1999, by and between 330 N. WABASH AVENUE,
L.L.C., a limited liability company organized and existing under the laws of the
State of Delaware ("BORROWER"), and WESTDEUTSCHE IMMOBILIENBANK, a banking
institution organized under the laws of the Federal Republic of Germany, having
an address at Wilhelm Theodor Romheld Strasse 24, 55130 Mainz, Federal Republic
of Germany, individually and as agent (including any of its successors and
assigns, "AGENT") for Merrill Lynch Mortgage Capital Inc., a Delaware
corporation, and such other co-lenders as may exist from time to time
(collectively with Agent, "LENDERS" and each individually, "LENDER").

                              W I T N E S S E T H:

                  WHEREAS, Borrower owns fee title to the Premises and the
Improvements (as defined below) located on the Leasehold Premises (as defined
below) and a leasehold interest in the Leasehold (as defined below);

                  WHEREAS, Borrower and Lenders have agreed, among other things,
for the Lenders to make a loan to Borrower in the aggregate original principal
amount of One Hundred Sixty Million Dollars ($160,000,000) (the "LOAN")
evidenced by the certain Promissory Note from Borrower to Lenders dated as of
the date hereof, in the amount of One Hundred Sixty Million Dollars
($160,000,000) (the "NOTE") subject to the terms and conditions hereinafter set
forth; and

                  WHEREAS, Agent has agreed to fund $60,000,000 of the Loan and
Merrill Lynch Mortgage Capital Inc. has agreed to fund $100,000,000 of the Loan.

                  NOW THEREFORE, in consideration of the foregoing and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, Borrower and each Lender agree as follows:


                                    ARTICLE 1
                                   DEFINITIONS

                  Section 1.1       DEFINITIONS.

                  The following terms used in this Agreement shall have the
respective meanings ascribed to them below:

                  "77WWLP" means 77 West Wacker Limited Partnership, a limited
partnership organized under the laws of the State of Illinois.

<PAGE>

                                       2

                  "AFFILIATE" means, as to any Person, any other Person that,
directly or indirectly, controls, is controlled by or is under common control
with such Person or is a director or officer of such Person.


                  "AGENTS REGISTER" has the meaning set forth in SECTION
8.12(b)(y).

                  "ANNUAL INSTALLMENT PAYMENT" has the meaning set forth in
SECTION 2.7 hereof.

                  "APPLICABLE MARGIN" shall be 1.7%.

                  "APPRAISAL" means an M.A.I. appraisal, reasonably satisfactory
in form and scope to Agent, prepared by an appraiser selected by Borrower and
reasonably satisfactory to Agent.

                  "ASBESTOS" means any hydrated mineral silicate separable into
commercially usable fibers, including, but not limited to, chrysolite
(serpentine), amosite (cummingtonite-grunerite), crocidolite (riebecktite),
tremolite, anthophylite and actinolite.

                  "ASBESTOS-CONTAINING MATERIAL" means any material which
contains 1% or more Asbestos by weight.

                  "ASSIGNMENT OF CONTRACTS AND AUTHORIZATIONS" means that
certain Assignment of Contracts and Authorizations between Borrower and Lenders
executed on the Closing Date.

                  "ASSIGNMENT OF LEASES AND RENTS" means that certain Assignment
of Leases and Rents between Borrower and Lenders executed on the Closing Date.

                  "BORROWER'S ADDRESS" means:

                        c/o Prime Group Realty Trust
                        77 West Wacker Drive, Suite 3900
                        Chicago, Illinois  60601
                        Attention: Jeffrey A. Patterson and Louis G. Conforti

                  with a copy to

                        c/o Prime Group Realty Trust
                        77 West Wacker Drive, Suite 3900
                        Chicago, Illinois  60601
                        Attention:  General Counsel

<PAGE>
                                       3


                  "BUSINESS DAY" means any day other than a Saturday or Sunday
on which commercial banks are open for domestic and international business
(including dealings in dollar deposits) in New York City, USA, Chicago,
Illinois, USA, and Mainz, Federal Republic of Germany.

                  "CASH COLLATERAL ACCOUNT" means the interest-bearing, U.S.
Dollar depository account maintained by Borrower with LaSalle National Bank (or
a comparable account at another bank that is reasonably acceptable to Agent),
for the purpose of holding certain cash deposits made by Borrower pursuant to
SECTION 4.1(G) hereof, which cash deposits shall be pledged to Agent as
collateral for the Loan pursuant to the Cash Collateral Agreement.

                  "CASH COLLATERAL AGREEMENT" means that certain Cash Collateral
Agreement between Agent and Borrower executed on the Closing Date.

                  "CASH EXPENDITURES" means the aggregate costs paid by Borrower
in the ordinary course of maintaining and operating the Premises, the Leasehold
Premises and the Improvements located thereon (determined in accordance with the
cash method of accounting), including, without limitation, (a) installments of
principal and interest payable by Borrower to Agent or Lenders pursuant to the
terms of the Loan Documents, (b) Operating Expenses, (c) Income Taxes, (d)
repayments of Qualified Loans, (e) all costs and expenses incurred by Borrower
for capital improvements to the Premises, other than Tenant Improvement/Leasing
Commission Costs made in accordance with the Loan Documents, (f) Tenant
Improvement/Leasing Commission Costs, (g) deposits in the Cash Collateral
Account and (h) amounts with respect to any of the items set forth in clauses
(b) - (f) above which, in Borrower's reasonable judgment, are of a magnitude
that merits the establishment of reserves for the payment thereof over a period
of no less than two months.

                  "CASH RECEIPTS" means all income of any kind received by, or
on behalf of, Borrower from the Premises, the Leasehold Premises and the
Improvements located thereon (determined in accordance with the cash method of
accounting), including all fixed rent, percentage rent, escalation payments,
storage income, tenant work order income, cost recoveries and similar operating
income items whether or not derived from the Leases.

                  "CASH MANAGEMENT SYSTEM" means a system established by Manager
for the effective management and investment of cash of its Affiliates and
pursuant to which:

                  (i)      Borrower's lease receivables are paid by the lessees
                           to a lockbox account in the name of Borrower and
                           maintained by a recognized financial institution
                           ("Depository");


<PAGE>
                                       4


                  (ii)     Borrower's lockbox receipts are deposited daily into
                           a deposit and disbursement account ("Operating
                           Account") maintained in the name of Borrower with
                           Depository and transferred daily to a concentration
                           account maintained by Manager for its Affiliates with
                           Depository ("Concentration Account");

                  (iii)    Each transfer of Borrower's funds to the
                           Concentration Account is reflected as an advance to
                           Manager on Borrower's books (collectively, the
                           "Intercompany Advance");

                  (iv)     Borrower pays its obligations by issuing checks or
                           other payment instructions against its Operating
                           Account;

                  (v)      Borrower's checks or other payment instructions are
                           paid by transfer of funds from the Concentration
                           Account to its Operating Account, and the
                           Intercompany Advance contemporaneously is reduced by
                           the amount of such transfers; and

                  (vi)     Borrower and Manager at no time will permit
                           Borrower's Intercompany Advance to be less than zero
                           (0).

                  "CLOSING" means the time of the execution and delivery hereof
by Borrower and Lenders and the funding of the Loan.

                  "CLOSING DATE" means the date hereof.

                  "CODE" means the Internal Revenue Code of 1986, as amended,
and any successor thereto.

                  "COLLATERAL" means (a) subject to SECTION 2.5(b) hereof, the
Mortgaged Property (as defined in the Mortgage) and (b) any collateral delivered
to Agent in accordance with SECTION 4.1(g) hereof.

                  "CONTROL" (including the terms "CONTROLLING", "CONTROLLED BY"
and "UNDER COMMON CONTROL with") of a Person means the possession, direct or
indirect, of the power to vote 50% or more of the outstanding equity securities
or other ownership interests of such Person or to direct or cause the direction
of the management and policies of such Person, whether through the ownership of
the outstanding equity securities or other ownership interests, by contract or
otherwise.


<PAGE>
                                       5


                  "DEBT SERVICE" shall mean, with respect to any period, any and
all interest and scheduled payments of principal required to be made under the
Loan Documents during such period; PROVIDED, HOWEVER, that for the purpose of
calculating the Debt Service Coverage Ratio payments of principal required shall
be deemed to be on the basis of a thirty (30) year amortization schedule in lieu
of the actual amortization schedule required under the Loan Documents.

                  "DEBT SERVICE COVERAGE RATIO" or "DSCR" shall mean with
respect to any twelve (12) month period ending on December 31 (or with respect
to the calendar year in which the Loan is made, such shorter period ending on
December 31, 1999), the ratio of Net Operating Income (excluding tenant
improvement costs and leasing commissions) for such twelve (12) month period to
Debt Service for such twelve (12) month period as evidenced in the financial
statements to be provided to Agent by Borrower pursuant to SECTIONS 4.1(a)(i)
through 4.1(a)(iv). If applicable, at any time that Agent is in possession of
collateral that has been delivered to it by or on behalf of Borrower in
accordance with SECTION 4.1(g) hereof, the "Debt Service Coverage Ratio" shall
be calculated as if the amount of Net Operating Income for the period in
question included the value of the collateral so delivered to Agent.

                  "DEFAULT RATE" has the meaning set forth in SECTION 2.6
hereof.

                  "DEFAULTING LENDER" has the meaning set forth in SECTION
7.7(b) hereof.

                  "DEFERRED MAINTENANCE REPORT" means the portions of that
certain Property Condition Assessment Report dated as of July 15, 1998 prepared
by De Stefano & Partners, and that certain property condition letter update
dated as of November 24, 1999 (copies of which are attached hereto as Exhibit E)
addressing deferred maintenance of the Leasehold Premises and Improvements
located on the Leasehold Premises.

                  "DETERMINATION DATE" has the meaning set forth in the
definition of LIBOR.

                  "EARLY PAYMENT PREMIUM" has the meaning set forth in SECTION
2.8(b) hereof.

                  "ENVIRONMENTAL INDEMNITY AGREEMENT" means that certain
Environmental Indemnity Agreement between Borrower and Lenders executed on the
Closing Date.

                  "ENVIRONMENTAL LAW" means any federal, state, local or foreign
statute, law, ordinance, rule, regulation, code, order, writ, judgment,
injunction, decree or judicial or mandatory agency interpretation, policy or
guidance relating to pollution or protection of the environment, health, safety
or natural resources, including, without limitation, those relating to the use,
handling, transportation, treatment, storage, disposal, release or discharge of
Hazardous Materials applicable to the Premises.


<PAGE>
                                       6


                  "ENVIRONMENTAL SITE ASSESSMENT" means that certain Phase I
Environmental Site Assessment for 330 North Wabash Avenue, Chicago, Illinois,
prepared by Carlson Environmental, Inc., dated August 18, 1998, and that certain
letter update prepared by Carlson Environmental, Inc., dated November 19, 1999.

                  "ERISA" means the Employee Retirement Income Security Act of
1974, as amended from time to time, and the regulations promulgated and rulings
issued thereunder.

                  "ESTOPPEL CERTIFICATE" means an estoppel certificate in form
and substance acceptable to Agent which is dated not more than (a) forty-five
(45) days prior to the Closing Date with respect to the Major Tenants, and (b)
sixty (60) days prior to the Closing Date with respect to the balance of the
Estoppel Certificates.

                  "EUROCURRENCY LIABILITIES" has the meaning specified in
Regulation D of the Board of Governors of the Federal Reserve System, as in
effect from time to time.

                  "EVENT(S) OF DEFAULT" has the meaning set forth in SECTION 5.1
hereof.

                  "EXTENSION PERIOD" means the First Extension Period and/or the
Second Extension Period, as applicable.

                  "FIRST EXTENSION PERIOD" means the period from and after the
day after the Maturity Date until and including the First Extension Period
Termination Date.

                  "FIRST EXTENSION PERIOD OPTION" has the meaning set forth in
SECTION 2.7(b).

                  "FIRST EXTENSION PERIOD TERMINATION DATE" means December 13,
2003.

                  "FISCAL YEAR" means a fiscal year of Borrower ending on
December 31 in any calendar year or such other fiscal year as Borrower may
select from time to time in accordance with the terms of this Agreement.

                  "FIXTURES" means all property and equipment now owned or
hereafter acquired by Borrower and now or hereafter located under, on or above
the Premises or the Leasehold Premises and owned by Borrower, whether or not
permanently affixed, which to the fullest extent permitted by applicable law in
effect from time to time shall be deemed fixtures and a part of the Premises or
the Leasehold Premises.

                  "FLOATING RATE" means, for any LIBOR Interest Period, at
Borrower's election, indicated by telephonic notice, followed by written
confirmation, given by Borrower to Agent no later than 11:00 a.m. New York City
time, at least three (3) LIBO Business Days prior to the


<PAGE>
                                       7


commencement date of the first or next succeeding LIBOR Interest Period, LIBOR
plus the Applicable Margin.

                  "FOREIGN PERSON" has the meaning set forth in SECTION 3.14
hereof.

                  "GAAP" or "GENERALLY ACCEPTED ACCOUNTING PRINCIPLES" shall
mean accounting principles as generally accepted in the United States and as set
forth in statements of the Financial Accounting Standards Board and/or in the
Opinions of the Accounting Principles Board of the American Institute of
Certified Public Accountants, or such other accounting principles as may be
mutually agreed by Lender and Borrower.

                  "GOVERNMENTAL AUTHORITY(IES)" means any (federal, state,
county, municipal or other government) governmental department, commission,
board, bureau, court, agency or any instrumentality of any of them having
jurisdiction over Borrower the Premises and/or the Leasehold.

                  "GOVERNMENTAL REQUIREMENT" means any law, statute, code,
ordinance, order, rule, regulation, judgment, decree, writ, injunction,
franchise, permit, certificate, license, authorization, or other mandatory
direction or requirement of any Governmental Authority now existing or hereafter
enacted, adopted, promulgated, entered, or issued applicable to the Premises,
the Leasehold Premises or Borrower.

                  "GROUND LEASE" has the meaning set forth in the definition of
LEASEHOLD.

                  "GUARANTY" means that certain Guaranty, made by Prime in favor
of Agent, executed on the Closing Date.

                  "HAZARDOUS MATERIAL" means any flammable explosives,
radioactive materials, Asbestos, and any chemical, petroleum products, or other
man-made materials with hazardous or carcinogenic toxic characteristics,
including, without limitation, any substances defined as or included in the
definition of "hazardous substances", "hazardous waste", "hazardous materials",
"toxic substances", "contaminants", or other similar terms, by any federal,
state or local environmental statute, regulation or ordinance presently or
hereafter in effect, as such statute, regulation or ordinance may be amended
from time to time.

                  "IMPOSITIONS" means all (a) real estate and personal property
taxes and other taxes and assessments, public or private; utility rates and
charges including those for water and sewer; all other governmental and
non-governmental charges and any interest or costs or penalties with respect to
any of the foregoing; and charges for any public improvement, general and
special, ordinary and extraordinary, foreseen and unforeseen, of any kind and
nature whatsoever that at any time prior to or after the execution of the Loan
Documents may be assessed against Borrower


<PAGE>
                                       8


and levied or imposed upon the Premises and the Leasehold Premises or the rents
or income received therefrom, or any use or occupancy thereof which become due
and payable during the term of the Loan, (b) other taxes, assessments, fees and
governmental and non-governmental charges levied imposed or assessed upon or
against Borrower which become due and payable during the term of the Loan and
(c) taxes levied or assessed upon the Mortgage and the Note which become due and
payable during the term of the Loan (other than (i) income, gross receipts,
franchise, gift, inheritance and similar taxes imposed upon Lenders or any tax
imposed in lieu of or as a direct substitute for any such income, gross receipts
and similar taxes, (ii) any taxes levied or assessed in connection with a
Lender's transfer of all or any part of its interest in the Loan, except any
transfer taxes imposed on the initial transfer of interests in the Loan by Agent
within twelve (12) months of the Closing Date by any federal, state or local
government in the United States of America and (iii) taxes imposed by the
Federal Republic of Germany).

                  "IMPROVEMENTS" has the meaning specified in the Mortgage.

                  "INCOME TAXES" means all federal, state and local income taxes
payable (including installment and estimated payments in respect thereof),
directly or pursuant to a tax allocation agreement or successor agreement, by
Borrower or its direct and indirect partners with respect to the taxable income
derived or received from the Premises and the Leasehold Premises.

                  "INDEMNIFIED PARTY" has the meaning set forth in Section 5.5.

                  "INSTITUTION" means (a) a commercial bank organized under the
laws of the United States, or any State thereof, or a commercial bank organized
under the laws of another country, in any case having a net worth in excess of
$500,000,000, any holding company thereof and any affiliate having a net worth
in excess of $500,000,000 of any such holding company, (b) a savings and loan
association or savings bank organized under the laws of the United States, or
any State thereof, and having a net worth in excess of $250,000,000, any holding
company thereof and any affiliate having a net worth in excess of $250,000,000
of any such holding company, and (c) any insurance company, pension fund or
investment fund having a net worth in excess of $500,000,000. Nothing in clauses
(a) through (c) of the immediately preceding sentence to the contrary, each
Lender shall be deemed an "Institution".

                  "LAND" means the real property more particularly described in
EXHIBIT B attached hereto and by this reference made a part hereof.

                  "LAWS" means all present and future laws, statutes, codes,
ordinances, orders, judgments, decrees, injunctions, rules, regulations,
determinations, awards and court orders of any federal, state, municipal or
local government, Governmental Authority, regulatory agency or authority
applicable to Borrower, the Leasehold Premises and/or the Premises.


<PAGE>
                                       9


                  "LEASEHOLD" means Borrower's leasehold interest in that
certain premises (the "LEASEHOLD PREMISES") located at 401 North Wabash Avenue,
Chicago, Illinois, pursuant to that certain Lease (the "GROUND LEASE"), dated
December 20, 1968, by and between Marion Ortseifen Kane and Philip J. Reddy, as
trustees et al., as landlord, and International Business Machines Corporation,
as tenant, as amended, tenant's leasehold interest having been assigned to
Borrower on or before the date hereof. The parties hereto acknowledge and agree
that after such assignment Borrower does not and will not own a fee interest in
the Leasehold Premises (but will own a fee interest in the Improvements located
on the Leasehold Premises) and is not and will not be subject to or obligated in
any way with respect to such fee interest, except as otherwise set forth in the
Ground Lease.

                  "LEASES" means any and all leases, subleases, licenses,
concessions or grants of other possessory interest now or hereafter in force,
oral or written, entered into by or assigned to Borrower and covering or
affecting the Premises or the Leasehold Premises, or any part thereof,
including, without limitation, the leases set forth on EXHIBIT B hereto (true
and complete copies of which, to the best of Borrower's knowledge, have been
delivered to the Agent prior to the date hereof).

                  "LENDER DEFAULT OBLIGATION" has the meaning set forth in
SECTION 7.7(b) hereof.

                  "LENDING OFFICE" shall mean:

                  For Agent, in its capacity as Lender:

                     Wilhelm Theodor Romheld Strasse 24
                     55130 Mainz
                     Federal Republic of Germany
                     Attention:  Mr. Claus-Jurgen Cohausz or Mr. Armin Gemmerich

                  For Merrill Lynch Capital Inc.:

                     World Financial Center
                     North Tower, 10th Floor
                     250 Vesey Street
                     New York, New York 10281
                     Attention:  Mr. Steven Glassman

or such other office as each of the above mentioned Lenders, on any other
Lender, shall designate from time to time by written notice to Borrower and
Agent given at least three (3) Business Days prior to the effective date of such
notice.


<PAGE>
                                       10


                  "LIBO BUSINESS DAY" means a day other than (a) Saturday, (b)
Sunday, or (c) a day on which commercial banks in New York City, United States
of America, Chicago, Illinois, U.S., London, England or Mainz, Germany are
required by law to close.

                  "LIBO RESERVE PERCENTAGE" means the percentage representing
the reserve requirement applicable to Eurocurrency Liabilities pursuant to
Regulation D of the Board of Governors of the Federal Reserve System (or any
successor thereto). In determining the LIBO Reserve Percentage, Agent shall take
into account any transitional adjustment or phase-in provisions of the reserve
requirements otherwise applicable to Eurocurrency Liabilities during the
applicable LIBOR Interest Period, and, in the event of any change or variation
in the reserve requirements during the applicable LIBOR Interest Period, Agent
may use any reasonable averaging or attribution methods which it deems
appropriate. The determination by Agent of any applicable LIBO Reserve
Percentage shall be conclusive, absent manifest error. Failure by Agent to take
into account the LIBO Reserve Percentage when calculating interest due with
respect to the outstanding indebtedness of the Loan shall not constitute,
whether by course of dealing or otherwise, a waiver by Agent of its right to
collect such amounts for any future period.

                  "LIBOR" means, as to the outstanding indebtedness owed
hereunder with respect to the applicable LIBOR Interest Period, (a) the rate per
annum equal to the offered rate for deposits in United States dollars for the
applicable LIBOR Interest Period and for the amount comparable to the then
outstanding indebtedness of the Loan, which appears on Dow Jones Markets Service
(formerly known as Telerate) display page 3750 as of 11:00 a.m. (London time)
two (2) LIBO Business Days prior to the first day of such LIBOR Interest Period
(the "DETERMINATION DATE") divided by (b) one minus the LIBO Reserve Percentage.
"Dow Jones Markets Service display page 3750" means the display designated as
"page 3750" on the Dow Jones Markets Service (or such other page as may replace
page 3750 on that service or such other service as may be nominated by the
British Bankers' Association as the information vendor for the purpose of
displaying British Bankers' Association Interest Settlement Rates for U.S.
Dollar deposits). If such rate does not appear on Dow Jones Markets Service page
3750 as of approximately 11:00 a.m. (London time) on the Determination Date, the
LIBOR for the LIBOR Interest Period will be reasonably determined by Agent in
good faith on a customary commercial basis on the basis of the offered rates for
deposits in U.S. Dollars for an amount comparable to the then outstanding
indebtedness of the Loan for the same period of time as such


<PAGE>
                                       11


LIBOR Interest Period that are offered by four (4) major banks in the London
interbank market at approximately 11:00 a.m. (London time) on the Determination
Date. Agent will request that the principal London office of each of the four
(4) major banks provide a quotation of its U.S. Dollar deposit offered rate. If
at least two (2) such quotations are provided, the LIBOR will be the arithmetic
mean of the quotations. If fewer than two (2) quotations are provided as
requested, the LIBOR will be reasonably determined by Agent in good faith on a
customary commercial basis on the basis of the rates quoted for loans in U.S.
Dollars to leading European banks for amounts comparable to the then outstanding
indebtedness of the Loan for the same period of time as such LIBOR Interest
Period offered by major banks in New York City at approximately 11:00 a.m. (New
York time) on the Determination Date. If at least two (2) such rates are so
provided, the LIBOR will be the arithmetic mean of the quotations. If fewer than
two (2) rates are provided, the LIBOR which was used to determine the last LIBOR
in effect shall be deemed to be the LIBOR.

                  "LIBOR INTEREST PERIOD" means, for any outstanding
indebtedness of the Loan, the time during which the applicable Floating Rate is
in effect with respect to such amount and shall mean the period commencing, (a)
in the case of the first LIBOR Interest Period on the Closing Date, and (b) with
respect to any subsequent LIBOR Interest Periods, on the last day of the
immediately preceding LIBOR Interest Period, and ending, in each case, at the
option of Borrower, as provided below, thirty (30), sixty (60), ninety (90) or
one hundred and eighty (180) days thereafter; PROVIDED, HOWEVER, that whenever
the last day of any LIBOR Interest Period would otherwise occur on a day other
than a LIBO Business Day, the last day of such LIBOR Interest Period shall be
extended to occur on the next succeeding LIBO Business Day, PROVIDED FURTHER
that if such extension would cause the last day of such LIBOR Interest Period to
occur in the next following calendar month, the last day of such LIBOR Interest
Period shall occur on the immediately preceding LIBO Business Day.

                  "LIEN" means, for purposes of this Agreement and with respect
to any asset, any mortgage, deed of trust, lien, pledge, charge, security
interest or other encumbrance of any kind in respect of such asset, including
without limitation any right or arrangement with any creditor to have its claim
satisfied out of such asset, or the proceeds therefrom, prior to the general
creditors of the owner thereof.

                  "LOAN DOCUMENTS" means all instruments and agreements executed
and delivered, or to be executed and delivered by Borrower, to Agent and/or
Lenders in connection with the Loan, each in form and substance acceptable to
Agent in its reasonable discretion. By way of example, but not limitation, such
documents shall include (a) the Note, (b) the Mortgage, (c) this Agreement, (d)
the Environmental Indemnity Agreement, (e) the Cash Collateral Agreement and (f)
all such other instruments as Agent in its reasonable discretion shall require.

                  "MAJOR TENANTS" mean Jenner & Block, Arthur Andersen LLP,
International Business Machines Corporation, Foley & Lardner and ST Holdings,
Inc.

                  "MAJORITY LENDERS" means, at any time, Lenders owed more than
sixty-six and two-thirds percent (66 %) of the then aggregate unpaid principal
amount of the Loan.

                  "MANAGEMENT AGREEMENT" means the Management Agreement, dated
as of the Closing Date, between Borrower and Manager.


<PAGE>
                                       12


                  "MANAGER" means Prime Group Realty, L.P., or another Affiliate
of Borrower or any other Person retained by Borrower as its property manager and
approved by Agent with respect to the Premises and the Leasehold Premises in
accordance with the terms of the Loan Documents.

                  "MATURITY DATE" means December 13, 2002.

                  "MORTGAGE" means the Mortgage, Assignment of Leases and Rents,
Security Agreement and Fixture Filing dated as of the date hereof by Borrower in
favor of Lenders.

                  "MORTGAGE INSURANCE POLICY" means a final, marked commitment
of title insurance containing such coverages as Agent reasonably deems
necessary, with all general survey exceptions deleted, on forms of, and issued
by, Title Company and/or such other title insurance companies as may be
reasonably acceptable to Agent insuring the priority of the Lien on the Land and
the improvements created by the Mortgage.

                  "NET CASH FLOW" means, for any period, the excess of Cash
Receipts over Cash Expenditures.

                  "NET OPERATING INCOME" shall include the Operating Income
accrued by Borrower for the applicable period less all Operating Expenses in
connection with the operation of the Premises, the Leasehold Premises and all
Improvements, all the foregoing being in accordance with Generally Accepted
Accounting Principles.

                  "OPERATING ACCOUNT AGREEMENT" means that certain Operating
Account Agreement between Agent and Borrower executed on the Closing Date.

                  "OPERATING EXPENSES" means, with respect to any period, all
operating expenses of the Premises, the Leasehold Premises and all Improvements,
including costs incurred for utilities, repairs, maintenance, security,
cleaning, salaries and payroll, administrative, marketing, legal and other
professional services, management fees payable to Manager, real estate taxes and
insurance premiums and such other expenses as are determined in accordance with
Generally Accepted Accounting Principles consistently applied, except
depreciation associated with the Premises.

                  "OPERATING INCOME" means, with respect to any period, all of
the Rents (as hereinafter defined), revenues and income under the Leases (but
specifically excluding security deposits unless and to the extent same are used
to cure defaults) and/or arising from the use or enjoyment of all or any portion
of the Premises, the Leasehold Premises and all Improvements, and all other
amounts received which, in accordance with Generally Accepted Accounting

<PAGE>
                                       13


Principles, are required to be included in Borrower's financial statement as
operating income of the Premises, the Leasehold Premises and all Improvements.

                  "OPINION OF BORROWER'S COUNSEL" means an opinion of counsel of
Borrower, Winston & Strawn, in form and substance reasonably satisfactory to
Agent and Agent's counsel.

                  "ORGANIZATIONAL DOCUMENTS" means (a) with respect to any
Person that is a corporation, the certificate of incorporation or charter and
by-laws of such Person, (b) with respect to any Person that is a partnership,
the partnership agreement and, if a limited partnership, certificate of limited
partnership of such Person, and (c) with respect to any Person that is a limited
liability company, the articles of organization and the operating agreement of
such Person.

                  "OTHER TAXES" mean any present or future stamp or documentary
taxes or any other excise or property taxes, charges or similar levies which
arise from payment made hereunder or under the Note or from the execution,
delivery or recording of, or otherwise with respect to, this Agreement, the Note
or the Mortgage imposed by the United States or any state thereof (including any
political subdivision or taxing authority thereof), OTHER THAN (a) income, gross
receipts, franchise, inheritance, gift and similar taxes imposed upon Lenders or
any tax imposed in lieu of and as a direct substitute for any such income, gross
receipts, and similar taxes and (b) any taxes levied or assessed in connection
with a Lender's transfer of all or any part of its interest in the Loan, except
any transfer taxes imposed on the initial transfer of interests in the Loan by
Agent within twelve (12) months of the Closing Date by any federal, state or
local government in the United States of America.

                  "PERCENTAGES" shall mean (i) with respect to Agent 37.5%, and
(ii) with respect to Merrill Lynch Mortgage Capital Inc. 62.5%.

                  "PERMITTED ENCUMBRANCES" means all those certain encumbrances
set forth on Schedule B-2 to that certain title policy of Title Company dated as
of the date hereof, No. 007750482, in respect of 330 North Wabash Avenue,
Chicago, Illinois, to which the interest of Borrower in the Premises is
permitted to be subject.

                  "PERMITTED INVESTMENTS" means any investment selected by
Borrower and approved by Agent, including one or more of the following:

                           (i) obligations of, or obligations guaranteed as to
                  principal and interest by, the United States government or any
                  agency or instrumentality thereof, provided such obligations
                  are backed by the full faith and credit of the United States
                  of America;

                           (ii)     Federal Housing Administration debentures;

<PAGE>
                                       14


                           (iii) Federal Home Loan Mortgage Corp. Debt
                  obligations, Farm Credit System Consolidated system-wide bonds
                  and notes, Federal Home Loan Banks Consolidated Debt
                  obligations, Federal National Mortgage Association Debt
                  obligation, Student Loan Marketing Association Debt
                  obligations, Finance Corp. debt obligations and Resolution
                  Funding Corp. (REFCORP) Debt obligations;

                           (iv) federal funds, unsecured certificates of
                  deposit, time or demand deposits, banker's acceptances, and
                  repurchase agreements having maturities of not more than 365
                  days, of any bank, the short-term debt obligations of which
                  are rated A-1+ by S&P and P-1 by Moody's;

                           (v) deposits that are fully insured by the Federal
                  Deposit Insurance Corp (FDIC);

                           (vi) debt obligations maturing in 365 days or less
                  that are rated AAA or higher by S&P and Aaa or higher by
                  Moody's;

                           (vii) commercial paper rated A-1 by S&P and P-1 by
                   Moody's and maturing in 365 days or less;

                           (viii) investment in money market funds rated AAAm or
                  AAAm-G by S&P and Aaa by Moody's; or

                           (ix) principal-only strips and interest-only strips
                  of noncallable obligations issued by the U.S. Treasury, and
                  REFCORP securities stripped by Federal Reserve Bank of New
                  York.

                  "PERMITTED TRANSFEREE" means a Pension Fund or Insurance
Company.

                  "PERSON" means an individual, partnership, corporation
(including a business trust), limited liability company, joint stock company,
trust, unincorporated association, joint venture or other entity, or a
government or any political subdivision or agency thereof.

                  "PERMITTED EXCEPTIONS" means (a) Liens in favor of Lender, (b)
Permitted Prior Exceptions, (c) Leases to which Lender has provided its consent
(or is otherwise deemed to have given) pursuant to SECTION 4.1(O) hereof and (d)
other matters expressly approved by Lender in writing which are subject and
subordinate to the Lien.

                  "PERMITTED PRIOR EXCEPTIONS" means (a) general ad valorem real
property taxes which are not delinquent, (b) Special Taxes which are not
delinquent, and (c) such other matters as Lender shall expressly approve in
writing as "PERMITTED PRIOR EXCEPTIONS" for purposes of this Agreement.


<PAGE>
                                       15


                  "PERSONAL PROPERTY" means tangible personal property and
Fixtures, including building materials and supplies, furnishings, equipment and
other Goods (as defined in the Mortgage) owned by Borrower, but excluding
construction equipment of a type intended for use in connection with other
projects.

                  "PREMISES" means the Land together with all of the
improvements constructed thereon, Fixtures and equipment and Personal Property
located thereon and used in connection with the ownership or operation thereof.

                  "PREPAYMENT PREMIUM" has the meaning set forth in SECTION
2.9(a).

                  "PRIME" means Prime Group Realty, L.P., a limited partnership
organized under the laws of the State of Delaware.

                  "PRIME RATE" means the per annum rate of interest publicly
announced from time to time by Westdeutsche ImmobilienBank at Mainz, Germany as
its "Prime Rate".

                  "PURCHASE AGREEMENT" means that certain Agreement of Purchase
and Sale between BRE\Wabash, LLC and Prime Group Realty Limited Partnership
effective September 30, 1999, as assigned.

                  "QUALIFIED INSURER" has the meaning set forth in SECTION
5.5(m)(ii).

                  "QUALIFIED LOAN" has the meaning set forth in SECTION 4.2(j)
hereof.

                  "REINVESTMENT RATE" shall mean the yield on actively traded
"On The Run" United States Treasury securities having interest payable
semi-annually or the LIBOR corresponding to the appropriate LIBOR Interest
Period, if applicable, and having a maturity date corresponding to the period
from the day preceding the date of the applicable prepayment through the
applicable LIBOR Interest Period as reported by Bloomberg Financial Markets
Commodities News screen USD, PROVIDED, HOWEVER, that if the Maturity Date is not
the same as the maturity date of an actively traded "On The Run" United States
Treasury security, such yield shall be obtained by linear interpolation
(calculated to the nearest one-twelfth of a year) from the yields of actively
traded "On The Run" Treasury securities having a maturity closest to the
Maturity Date as reported by Bloomberg Financial Markets Commodities News screen
USD or the equivalent screen provided by Bloomberg Financial Markets Commodities
News (or any nationally recognized publicly available on-line source for similar
market data in the United States reasonably selected by Agent).


<PAGE>
                                       16


                  "REMEDIATION AMOUNT" has the meaning set forth in Section
6.1(m) hereof.

                  "REMEDIATION WORK" has the meaning set forth in Section 6.1(m)
hereof.

                  "RENTS" means all of the rents, royalties, issues, revenues,
income, profits and other benefits now or hereafter arising from the Premises
and the Leasehold Premises and the occupancy, use and enjoyment thereof.

                  "RENT ROLL" has the meaning set forth in SECTION 3.20 hereof.

                  "RESTRAINT" means any change (including introduction) after
the date of this Agreement in any applicable law, rule, regulation, guidelines
or directive including, without limitation, those of the United States and the
Federal Republic of Germany, or the interpretation thereof (having the force of
law), by any governmental authority, central bank or comparable agency, and
compliance by Lenders with any request or directive (having the force of law) to
be issued after the date of this Agreement of any such authority, bank or
agency.

                  "RIGHT OF OTHERS" means, as to any property in which a Person
has an interest, any legal or equitable claim or other interest (other than a
Lien but including a leasehold interest, a right of first refusal in connection
with sale of the Premises or a right of repossession or removal) in or with
respect to such property held by any other Person, and any option or right held
by any other Person to acquire any such claim or other interest or any Lien in
or with respect to such property.

                  "SECOND EXTENSION PERIOD" means the period from and after the
day following the First Extension Period Termination Date until and including
the Second Extension Period Termination Date.

                  "SECOND EXTENSION PERIOD OPTION" has the meaning set forth in
SECTION 2.7(C).

                  "SECOND EXTENSION PERIOD TERMINATION DATE" means December 13,
2004.

                  "SNDAs" has the meaning set forth in SECTION 4.1(P).

                  "SOLVENT" and "SOLVENCY" mean, with respect to any Person on a
particular date, that on such date (a) the fair value of the property of such
Person is greater than the total amount of liabilities, including, without
limitation, contingent liabilities, of such Person, (b) the present fair salable
value of the assets of such Person is not less than the amount that will be
required to pay the probable liability of such Person on its debts as they
become absolute and matured, (c) such Person does not intend to, and does not
believe that it will, incur debts or liabilities beyond such Person's ability to
pay such debts and liabilities as they mature and (d) such Person


<PAGE>
                                       17


is not engaged in business or a transaction, and is not about to engage in
business or a transaction, for which such Person's property would constitute an
unreasonably small capital. For purposes of this Agreement, the amount of
contingent liabilities at any time shall be computed as the amount that, in the
light of all the facts and circumstances existing at such time, represents the
amount that is likely to become an actual or matured liability.

                  "SPECIAL TAX" means, as to any property, (a) any special
assessment or other Tax which is or may become a Lien affecting such property,
other than general ad valorem real property taxes, and (b) any assessment,
improvement, community facilities or other special taxing district in or into
which such property is or may be located or incorporated or under which any
special assessment or other Tax which is or may become a Lien affecting such
property is or may be imposed.

                  "SYNDICATION AGREEMENT" means that certain Syndication
Agreement entered into December 9, 1999, by and between Agent and Merrill Lynch
Mortgage Capital Inc.

                  "TAXES" means any and all present or future taxes, levies,
impositions, deductions, charges or withholdings imposed by the United States or
any state thereof (including any political subdivision or taxing authority
thereof), and all liabilities with respect thereto; PROVIDED, HOWEVER, that
"Taxes" shall not include (a) income, gross receipts and similar taxes imposed
upon Lenders or any tax imposed in lieu of and as a direct substitute for any
such income, gross receipts and similar taxes and (b) any taxes levied or
assessed in connection with a Lender's transfer of all or any part of its
interest in the Loan.

                  "TENANT" means, as to any Lease, the tenant, lessee, sublessee
or licensee under such Lease.

                  "TENANT IMPROVEMENT/LEASING COMMISSION COSTS" means,
collectively, all costs and expenses incurred by Borrower for tenant improvement
work, tenant work allowances or other capital improvements, allowances,
concessions and payments of Borrower required pursuant to any Lease, and any
leasing commissions and other costs, expenses and allowances incurred by
Borrower in connection with the leasing or subleasing of all or a portion of the
Premises or the Leasehold Premises pursuant to a Lease.

                  "TERM" means the period from and after the Closing Date until,
and including, the Maturity Date or, if applicable, the First Extension Period
Termination Date or the Second Extension Period Termination Date.

                  "TITLE COMPANY" means Chicago Title Insurance Company and/or
such other title insurance companies as may be reasonably acceptable to Agent
insuring the priority of the Lien on the Land and the Improvements created by
the Mortgage.


<PAGE>
                                       18


                  "TO THE BEST OF BORROWER'S KNOWLEDGE" (and similar
expressions) shall be construed as meaning to the actual knowledge, after
reasonable due inquiry, of Borrower's Executive Vice President and General
Counsel, or Associate General Counsel after direct inquiry of the building
manager and other officers of Borrower having any relevant involvement in the
operation of the Premises and the Leasehold Premises.

                  "TRUST" means Prime Group Realty Trust, a Maryland real estate
investment trust, the managing general partner of Prime.

                                    ARTICLE 2
                                    THE LOAN

                  Section 2.1       LOAN.

                  (a) The Loan granted under this Agreement shall be in the
aggregate amount of ONE HUNDRED SIXTY MILLION DOLLARS ($160,000,000.00) (the
"LOAN AMOUNT") and shall be used for the sole purpose of the Borrower's partial
financing of the acquisition of the Premises and the Leasehold Premises and the
Improvements located on the Leasehold Premises.

                  (b) Upon satisfaction of the conditions precedent to Lenders'
obligation to advance the Loan pursuant to this Agreement, all funds to be
advanced hereunder shall be advanced by each Lender to Agent in the amount set
forth opposite its signature on the signature page attached hereto. Agent and
the other Lenders shall advance the Loan Amount to the Title Company's escrow
account on the Closing Date for payment by direction of Agent or Agent's counsel
to make payments required under this Loan Agreement, with any excess proceeds to
be disbursed to Borrower. The obligation of each Lender under this SECTION
2.1(b) shall be several and not joint.

                  Section 2.2       CONDITIONS PRECEDENT.

                  The obligations of Lenders hereunder are subject to the
condition that Agent shall have received, at or prior to the Closing, all of the
following documents in form and substance satisfactory to Agent:

                  (a) a certificate of Borrower signed by a duly authorized
officer of the sole member of Borrower, dated as of the Closing Date, stating
that the following statements are true:

                      (i) the representations and warranties contained in the
Loan Documents are correct in all material respects on and as of the Closing
Date, before and after giving effect to the making of the Loan by Lenders and to
the application of the proceeds therefrom, as though made on and as of such
date; and


<PAGE>
                                       19


                      (ii) to the best of Borrower's knowledge, no material
event has occurred and is continuing, or would result from the making of the
Loan by Lenders or from the application of the proceeds therefrom, that
constitutes an Event of Default;

                  (b) certified copies of the resolutions of the board of
trustees of the Trust or similar governing body, as applicable, of 77WWLP and
Prime approving the Loan, this Agreement, the Note and each other Loan Document
to which it is or is to be a party, and of all documents evidencing other
necessary partnership or corporate action and governmental and other third party
approvals and consents, if any, with respect to the Loan, this Agreement, the
Note and each other Loan Document;

                  (c) a copy of the Organizational Documents of Borrower, Prime
and 77WWLP, in each case together with each amendment thereto, and, in the case
of the operating agreement of Borrower, the certificate of limited partnership
of Prime and the certificate of limited partnership of 77WWLP, certified (as of
a date reasonably near the Closing Date) by the Secretary of State of the
jurisdiction of its formation or incorporation as being a true and correct copy
thereof;

                  (d) a copy of a certificate of the Secretary of State of the
jurisdiction of its incorporation, dated reasonably near the Closing Date,
certifying that Borrower, Prime and 77WWLP are duly incorporated or formed and
in good standing under the laws of the State of the jurisdiction of their
respective organization;

                  (e) a copy of a certificate of the Secretary of State of the
State of Illinois, dated reasonably near the Closing Date, stating that
Borrower, Prime and 77WWLP are duly qualified and in good standing in such
State;

                  (f) a notarized certificate of a Secretary or Assistant
Secretary of the Trust certifying the names and true signatures of the officers
of the Trust, authorized to sign this Agreement, the Note and each other Loan
Document to which they are or are to be parties and the other documents to be
delivered hereunder and thereunder;

                  (g) in connection with the security interests granted pursuant
to the Mortgage:

                      (i) copies of financing statements, delivered by Borrower
to Title Company for filing under the Uniform Commercial Code of the State of
Illinois, as well as any other jurisdictions deemed necessary or desirable by
Agent, covering the Collateral described in the Mortgage,

                      (ii) completed requests for information, dated on or
before the Closing Date, listing the financing statements referred to in clause
(i) above and all other effective


<PAGE>
                                       20


financing statements filed in the jurisdictions referred to in clause (i) above
that name Borrower as debtor, together with copies of such other financing
statements,

                      (iii) evidence of the completion of all other recordings
and filings of or with respect to the security interest granted pursuant to the
Mortgage that Agent may deem necessary or desirable in order to perfect and
protect the Liens created thereby, and

                      (iv) evidence that all other action that Agent may deem
reasonably necessary or desirable in order to perfect and protect the first
priority liens and security interests created under the Mortgage has been taken;

                  (h) the Mortgage in form and substance satisfactory to Agent
and duly executed by Borrower in recordable form, together with:

                      (i) evidence that counterparts of the Mortgage have been
duly executed and delivered for recording to the Title Company on or before the
Closing Date in such form as Agent may deem necessary or desirable in order to
create a valid first and subsisting Lien on the property described therein in
favor of Agent and that provision has been made for the payment of all filing
and recording taxes and fees,

                      (ii) a fully paid Mortgage Insurance Policy, in form and
substance, with endorsements and in an amount acceptable to, Agent, issued and
reinsured by the Title Company, insuring the Mortgage to be a valid first and
subsisting Lien on the Premises and the Leasehold described therein, free and
clear of all defects (including, but not limited to, mechanics' and
materialmen's Liens) and encumbrances, excepting only Permitted Encumbrances,
and providing for such other affirmative insurance (including endorsements for
mechanics' and materialmen's Liens) and such coinsurance and direct access
reinsurance as Agent may deem reasonably necessary or desirable,

                      (iii) a survey of the Premises, certified to Agent and the
issuer of the Mortgage Insurance Policy in a manner satisfactory to Agent,
acceptable to Agent,

                      (iv) an Appraisal of the Premises and the Leasehold
indicating an open market value of at least $238,000,000, a forced sale value of
at least $160,000,000 and otherwise in form and substance satisfactory to Agent,

                      (v) an engineering report and such other reports as Agent
has requested with respect to the Premises, in form and substance and from
professional firms acceptable to Agent,


<PAGE>
                                       21


                      (vi) such consents and agreements of lessors, if any, and
other third parties, and such estoppel letters and other confirmations, as Agent
may deem reasonably necessary or desirable,

                      (vii) evidence of the insurance required by the terms of
the Mortgage,

                      (viii) evidence that all other action that Agent may deem
reasonably necessary or desirable in order to create valid first and subsisting
Liens on the Premises and the Leasehold Premises has been taken, and

                      (ix) original copies of all mortgage notes being assigned
to Agent (or, if the same were not available, lost note affidavits, reasonably
acceptable to Agent with respect thereto), together with all assignments,
consolidations, splitters, spreaders, extensions and modifications thereto, to
the extent being recorded in connection herewith, in form for recordation in
Chicago, Illinois;

                  (i) the Environmental Indemnity Agreement, duly executed by
Borrower;

                  (j) the Cash Collateral Agreement, duly executed;

                  (k) the Assignment of Contracts and Authorizations, duly
executed;

                  (l) the Assignment of Leases and Rents, duly executed;

                  (m) the Note, duly executed;

                  (n) this Agreement, duly executed;

                  (o) the Environmental Site Assessment;

                  (p) a certified copy of the Management Agreement;

                  (q) the Property Management Subordination Agreement, duly
executed;

                  (r) a favorable Opinion of Borrower's Counsel;

                  (s) copies of notices to be sent to each tenant at the
Premises and the Leasehold Premises regarding the designation of Agent as an
insured/loss payee/mortgagee in accordance with the Mortgage;


<PAGE>
                                       22


                  (t) SNDAs with respect to the Major Tenants, in form and
substance acceptable to Agent;

                  (u) Estoppel Certificates from the Major Tenants and (ii) any
other tenants under the Leases, that, together with the Major Tenants, account
for at least sixty-six and two-thirds percent (66 2/3%) of the rentable square
footage of the Premises. Notwithstanding the foregoing, Borrower will provide to
Agent Estoppel Certificates for all tenants for which Borrower received Estoppel
Certificates from Seller pursuant to the Purchase Agreement.

                  (v) financial statements as requested by Agent certified as of
the Closing Date and a certificate of an officer of the Trust stating no
material adverse change in the financial condition of Borrower, 77WWLP, Prime
and the Trust has occurred from the date the financial statements were prepared;

                  (w) certified copies of all the Leases and a Rent Roll
certified by Borrower as being true and correct in all material respects;

                  (x) payment of Commitment Fee and Arrangement Fee required to
be paid hereunder pursuant to SECTIONS 2.14 and 2.15, respectively;

                  (y) the Guaranty, duly executed by Prime;

                  (z) a copy of the Deferred Maintenance Report; and

                  (aa) any other documents as may reasonably be requested by
Agent in Agent's reasonable discretion.

                  Section 2.3       INTEREST.

                  (a) During the Term and, if applicable, the First Extension
Period and the Second Extension Period, the Loan shall bear interest on the
outstanding principal amount thereof from time to time at a rate per annum equal
to the Floating Rate.

                  (b) (i) During the Term, Borrower shall pay to Agent interest
on the Loan on the last day of each applicable LIBOR Interest Period.

                      (ii) If applicable, during the First Extension Period and
the Second Extension Period (if Borrower exercises the First Extension Period
Option and the Second Extension Period Option, respectively, pursuant to SECTION
2.7 hereof), Borrower shall pay to Agent interest on the Loan on the last day of
each applicable LIBOR Interest Period.


<PAGE>
                                       23


                  (c) All interest on the Loan (including interest at the
Default Rate) shall be calculated on an actual/360-day basis (including the
first day but excluding the last day).

                  (d) Borrower may elect (i) thirty (30), (ii) sixty (60), (iii)
ninety (90) or (iv) one hundred and eighty (180) day LIBOR Interest Periods. In
the event that Borrower fails to so designate the LIBOR Interest Period at least
three (3) LIBO Business Days before the next succeeding LIBOR Interest Period,
Agent shall automatically designate on Borrower's behalf a ninety (90) day LIBOR
Interest Period.

                  (e) Time shall be of the essence with respect to the time
periods set forth in this SECTION 2.3.

                  Section 2.4       THE NOTE.

                  The Loan by Lenders to Borrower shall be evidenced by the
Note.

                  Section 2.5       THE MORTGAGE AND COLLATERAL.

                  (a) The Note and all other obligations under the Loan
Documents shall be secured by the Collateral. Upon the Closing of this Agreement
and the execution of the Note, Borrower will cause the Mortgage to be registered
or recorded in such a manner and in such a place as may be required in order to
publish notice of and fully protect the lien or security interest of Lenders in
the Premises and the Leasehold Premises.

                  (b) On the date hereof, the Collateral includes Borrower's
interest in the Ground Lease and the Improvements located on the Leasehold
Premises. In the event that, at any time during the Term, an amount equal to the
greater of (i) 80% of the gross sale proceeds of Borrower's sale of the
Leasehold and the Improvements located upon the Leasehold Premises (as evidenced
by documentation reasonably satisfactory to Agent) or (ii) 80% of the value of
the Leasehold and the Improvements located upon the Leasehold Premises (as set
forth in the Appraisal described in SECTION 2.2(h)(iv) hereof) is paid by
Borrower to Agent in partial payment of Borrower's debt to Lenders: (A) Agent
shall release the Leasehold and the Improvements located upon the Leasehold from
the lien of the Mortgage and Agent shall provide to Borrower all documents
necessary to cause and evidence such release; and (B) subject to SECTION 2.5(c)
hereof Borrower may transfer Borrower's interest in the Ground Lease and
Improvements located on the Leasehold Premises without further approval by
Agent. Amounts paid under this SECTION 2.5(b) shall reduce the then outstanding
principal balance of the Loan.

                  (c) Borrower shall not transfer Borrower's interest in the
Ground Lease and the Improvements located on the Leasehold Premises unless such
transfer can be accomplished by


<PAGE>
                                       24


Borrower without violating any land use and/or parking regulations or
restrictions now or hereinafter in effect impacting the Premises or the
Leasehold Premises.

                  Section 2.6       DEFAULT RATE.

                  Any overdue principal or interest on the Loan shall bear
interest, payable upon demand, for each day from and including the date which is
one (1) day after payment thereof was due but excluding the date of actual
payment at a rate per annum equal to the lesser of the maximum interest rate
permitted under applicable law or a rate equal to the sum of 3.0% plus the Prime
Rate (the "DEFAULT RATE"). After the occurrence and during the continuance of an
Event of Default, the Loan shall bear interest at the Default Rate.

                  Section 2.7       REPAYMENT OF LOAN.

                  (a) The outstanding principal balance of the Loan shall be
repaid in annual installments beginning December 13, 2000 as set forth in
EXHIBIT C (each an "ANNUAL INSTALLMENT PAYMENT"). The remaining outstanding
principal balance and any other indebtedness payable to Agent or Lenders under
the Loan Documents shall be due and payable on the Maturity Date if no Extension
Period is entered into or on the First Extension Period Termination Date or the
Second Extension Period Termination Date, as the case may be.

                  (b) Notwithstanding the foregoing, Borrower may exercise an
option (the "FIRST EXTENSION PERIOD OPTION") extending the Term for the period
from and after the day after the Maturity Date to and including the First
Extension Period Termination Date by providing notice of such exercise (the
"FIRST DESIGNATION NOTICE") to Agent, on or before the date that is thirty (30)
days before the Maturity Date. The First Designation Notice once given shall be
irrevocable. The exercise of the First Extension Period Option shall only be
available in the event that on the date of the First Designation Notice and the
Maturity Date: (i) no monetary Event of Default shall have occurred and be
continuing; (ii) no default of Borrower under any material contract instrument
or agreement to which Borrower is a party or by which Borrower or any of its
properties or assets may be bound or to which any may be subject, which default
might have a material adverse effect upon the business, operations, properties,
assets or conditions (financial or otherwise) of Borrower shall have occurred
and be continuing; or (iii) the Debt Service Coverage Ratio for the four (4)
full calendar quarters immediately preceding the calendar quarter in which the
Maturity Date occurs is at least 1.4:1. In the event that the Term is extended
pursuant to the First Extension Period Option, Borrower shall (A) pay to Agent
on or before the Maturity Date a fee of $200,000.00 and (B) prior to the
Maturity Date, extend the interest rate hedge agreement described in SECTION
4.1(w) hereof or enter into a similar agreement acceptable to Lender for at
least the duration of the First Extension Period. Upon and during the occurrence
of an Event of Default, all Net Cash Flow shall be deposited into the Cash
Collateral Account and shall be governed pursuant to the Cash Collateral
Agreement.

<PAGE>
                                       25


                  (c) Notwithstanding the foregoing, Borrower may exercise an
option (the "SECOND EXTENSION PERIOD OPTION") extending the Term for the period
from and after the day after the First Extension Period Termination Date to and
including the Second Extension Period Termination Date by providing notice of
such exercise (the "SECOND DESIGNATION NOTICE") to Agent, on or before the date
that is thirty (30) days before the First Extension Period Termination Date. The
Second Designation Notice once given shall be irrevocable. The exercise of the
Second Extension Period Option shall only be available in the event that on the
date of the Second Designation Notice and the First Extension Period Termination
Date: (i) no monetary Event of Default shall have occurred and be continuing;
(ii) no default of Borrower under any material contract instrument or agreement
to which Borrower is a party or by which Borrower or any of its properties or
assets may be bound or to which any may be subject, which default might have a
material adverse effect upon the business, operations, properties, assets or
conditions (financial or otherwise) of Borrower shall have occurred and be
continuing; or (iii) the Debt Service Coverage Ratio is at least 1.5:1. In the
event that the Term is extended pursuant to the Second Extension Period Option,
Borrower shall (A) pay to Agent on or before the First Extension Period
Termination Date a fee of $200,000.00, (B) prior to the First Extension Period
Termination Date, extend the interest rate hedge agreement described in SECTIONS
4.1(w) and 2.7(b)(B) hereof or enter into a similar agreement acceptable to
Lender for at least the duration of the Second Extension Period and (C) make the
payment required by SECTION 4.1(g)(ii) hereof.

                  Section 2.8       PREPAYMENTS.

                  (a) Borrower shall have the option on not less than ten (10)
Business Days' prior written notice to Agent to prepay the Loan in whole or in
part at any time and from time to time; PROVIDED, HOWEVER, that any such
prepayment shall be accompanied by accrued interest on the principal amount
being prepaid to, but excluding, the date of such prepayment plus the Prepayment
Premium, if any, determined pursuant to SECTION 2.9 hereof and any other amounts
then due and payable under the Loan Documents.

                  (b) In addition to the foregoing, in the event that Borrower
prepays all or any part of the principal amount of the Loan, Borrower shall also
pay the following amount to Agent (the "EARLY PAYMENT PREMIUM") in addition to
any other amounts required to be paid by Borrower to Agent pursuant to this
SECTION 2.8 in connection with a prepayment of principal under the Loan: (i)
before or on the first (1st) anniversary of the Closing Date, unless such
prepayment is made in order to avoid additional liability under or pursuant to
the requirements of SECTION 2.10 hereof, an amount equal to 2.0% of the
principal amount so prepaid; (ii) after the first (1st) anniversary of the
Closing Date but before or on the second (2nd) anniversary of the Closing Date,
unless such prepayment is made in order to avoid additional liability under or
pursuant to the requirements of SECTION 2.10, an amount equal to 1.0% of the
principal amount so prepaid; (iii) (A) in the event that Borrower has exercised
the First Extension Period Option, after the second (2nd) anniversary of the
Closing Date but before or on the third (3rd) anniversary of the Closing Date,
unless such

<PAGE>
                                       26


prepayment is made in order to avoid additional liability under or pursuant
to the requirements of SECTION 2.10, an amount equal to 1.0% of the principal
amount so prepaid and (B) in the event that Borrower has not exercised the
First Extension Period Option, after the second (2nd) anniversary of the
Closing Date but before or on the date that is nine (9) months after the
second (2nd) anniversary of the Closing Date, unless such prepayment is made
in order to avoid additional liability under or pursuant to the requirements
of SECTION 2.10, an amount equal to 1.0% of the principal amount so prepaid
and 0.0% of the principal amount so prepaid thereafter; and (iv) in the event
that Borrower has exercised the First Extension Period Option, after the
Maturity Date but before or on the date that is three (3) months prior to the
First Extension Period Termination Date or, if Borrower has exercised the
Second Extension Period Option, the Second Extension Period Termination Date,
unless such prepayment is made in order to avoid additional liability under
or pursuant to the requirements of SECTION 2.10 and/or SECTION 2.13 hereof in
which event no Early Payment Premium shall be due, an amount equal to 0.5% of
the amount prepaid and 0.0% of the amount so prepaid thereafter.
Notwithstanding anything to the contrary herein above set forth, payment of
the Early Payment Premium shall not be required in connection with a
prepayment pursuant to SECTION 2.13 or 8.14 HEREOF or Section 3, 6, 13 or 14
of the Mortgage.

                  (c) Except for prepayments made pursuant to Sections 6 and
3(d) of the Mortgage, any prepayment made pursuant to this SECTION 2.8 must be
made in minimum amount of One Million Dollars ($1,000,000) and in One Hundred
Thousand Dollar ($100,000) increments thereafter, for each such prepayment, not
including any Prepayment Premium or other costs associated with such prepayment
which shall be in addition to the amount so prepaid. Prepayment of principal
will be applied in inverse order to all payments required to be made hereunder.
Any amounts prepaid hereunder may not be reborrowed.

                  Section 2.9       FUNDING LOSS.

                  (a) Borrower shall indemnify Agent and Lenders against any
actual, out-of-pocket third party costs resulting solely and directly from
Borrower prepaying (including but not limited to as permitted under SECTION 2.8
hereof, but excluding scheduled payments of principal pursuant to the Note and
payments deemed made pursuant to SECTION 8.14 hereof) all or any portion of the
principal of the Loan before the end of the Term. For purposes of the foregoing
indemnity, such loss shall be deemed to be the lesser of (i) the actual swap
termination costs incurred by Agent (if the Floating Rate was determined by
Agent through the execution of one or more third party swap agreements) and (ii)
any loss arising from the reemployment of funds (such lesser amount, the
"PREPAYMENT PREMIUM"). As used in the preceding sentence, the "loss arising from
the reemployment of funds" shall mean the excess, if any, of (A) the aggregate
present value as of the date of such prepayment of the sum of (1) each dollar
being prepaid and (2) the amount of interest at the Floating Rate (but excluding
the Applicable Margin), that would have been payable in respect of such Loan
amount being prepaid if such prepayment had not been made and the Loan were
repaid in full before the Maturity Date, determined by discounting such amounts

<PAGE>
                                       27


at a rate equal to the applicable Reinvestment Rate from the respective dates
from which they would have been payable over (B) the amount of the Loan being
prepaid. If the applicable Reinvestment Rate is equal to or higher than the
Floating Rate (excluding the Applicable Margin), the Prepayment Premium shall be
zero. The Prepayment Premium, if any, payable by Borrower pursuant to the terms
hereof, shall include such amount or amounts, as calculated by Agent in good
faith, as shall compensate Agent for any out-of-pocket loss, cost or expense
incurred by Agent for terminating or unwinding any "forward swap", "hedging
agreement" or other contractual arrangement entered into by Agent with a third
party in order to commit to provide the Floating Rate to be applicable for the
Extension Period, pursuant to SECTION 2.3 hereof. Agent will use its reasonable
best efforts to mitigate, to the greatest extent possible, such losses and
expenses by reversing or unwinding any swap, forward swap, hedging arrangement
or other contractual arrangement relating to the Loan and/or reinvesting any
funds paid, prepaid or deposited by Borrower in a reverse swap or another manner
so as to reduce or eliminate the amount of any such loss or expense. A
certificate of Agent prepared in good faith and setting forth in reasonable
detail the basis for the determination of any cost and expense and the
computation of the amount thereof, shall, absent manifest error, be presumptive
evidence of such cost and expense and amount.

                  (b) All amounts due under this SECTION 2.9 shall be payable by
the Borrower within ten (10) days of demand by Agent.

                  Section 2.10      TAXES.

                  (a) Any and all payments by the Borrower under this Agreement
and the Note shall be made free and clear of and without deduction for Taxes. If
the Borrower shall be required by law to deduct any Taxes from or in respect of
any sum payable hereunder or under the Note to Agent:

                      (i) the sum payable shall be increased as may be necessary
so that after making all required deductions (including but not limited to
deductions applicable to additional sums payable under this provision) Agent
receives an amount equal to the sum it would have received had no such
deductions been made; and

                      (ii) the Borrower shall pay to the relevant taxation
authority or other authority the full amount deducted in accordance with
applicable law; PROVIDED, HOWEVER, that Borrower shall have the right to contest
the amount paid prior to payment;

                  (b) In addition to the payment of Taxes, the Borrower agrees
to pay prior to delinquency all Other Taxes, which Other Taxes may be repaid in
installments if so permitted under applicable Laws.


<PAGE>
                                       28


                  (c) The Borrower hereby indemnifies Lenders for the full
amount of Taxes and Other Taxes on amounts payable under this SECTION 2.10 which
are paid by Lenders and for any actual liability (including but not limited to
penalties, interest and expenses) arising in connection therewith whether or not
such Taxes, Other Taxes or liabilities were correctly or legally asserted,
unless due to Lenders' gross negligence or wilful misconduct. Agent shall notify
Borrower immediately after Agent learns of such Taxes, Other Taxes or
liabilities, but Agent's failure to so notify Borrower shall not limit
Borrower's obligations under this SECTION 2.10. Lenders agree to use their
reasonable efforts to minimize amounts due hereunder (including, without
limitation, making any filings that are necessary to maintain Lenders'
respective exemptions from withholding tax and assigning their respective
interests in the Loan to a branch that is eligible for such exemption, provided
such efforts are not otherwise disadvantageous to the respective Lenders). This
indemnity shall be fully performed within thirty (30) days from the date Agent
makes written demand therefor.

                  (d) Upon request by Agent, within thirty (30) days after the
date of any payment of Taxes or Other Taxes, Borrower will furnish to Agent the
original or a certified copy of a receipt or a copy of a check evidencing
payment thereof or other evidence reasonably satisfactory to Agent.

                  (e) Without prejudice to the survival of any other agreement
of Borrower hereunder, the agreements and obligations of Borrower contained in
this SECTION 2.10 shall survive the termination of this Agreement and the
payment in full of the Note (subject to applicable statutes of limitation).

                  Section 2.11      PAYMENTS.

                  (a) All payments of principal, interest and/or any other
amounts in connection with the Loan are to be made by Borrower without set-off
or counterclaim to the order of Agent to the account of Agent as from time to
time certified by Agent in writing to Borrower in U.S. Dollars in immediately
available (same day) funds not later than 11:00 a.m. (New York City time) on the
date such payment is due. If any payment would otherwise be due on a day which
is not a Business Day, then such payment shall be due on the next succeeding
Business Day, and interest shall accrue up to but not including such next
succeeding Business Day. All amounts received hereunder by Agent shall be deemed
received for the benefit of Lenders.

                  (b) Borrower hereby authorizes Agent, if and to the extent
payment due by Borrower under any Loan Document is not made when due under
any Loan Document, to charge from time to time against any and all of
Borrower's accounts with Agent any amount so due.

                  Section 2.12      DISTRIBUTION TO LENDERS.


<PAGE>
                                       29


                  When Agent receives current funds, in payment of principal,
interest or any other sums due hereunder, on or prior to 11:00 a.m. (New York
City time) on any Business Day, then, on such date, Agent will notify Lenders of
the same and will distribute like funds by wire transfer of immediately
available funds to the Lenders ratably to such accounts at such places as have
been designated by the respective Lenders in writing from time to time. If such
funds are received after 11:00 a.m. (New York City time) on any Business Day,
then Agent shall distribute such funds no later than the next succeeding
Business Day. Upon Agent's receipt of any other amounts payable by Borrower or
any other Persons, for items other than principal or interest, Agent shall
promptly cause the payment to be applied in accordance with this Agreement.
Unless Agent shall have received notice from Borrower prior to the date on which
any payment is due to Lenders hereunder that Borrower will not make such payment
in full, Agent may assume that Borrower has made such payment in full to Agent
on such date and Agent may, in reliance upon such assumption, cause to be
distributed to each Lender on such due date an amount equal to the amount then
due such Lender. If and to the extent Borrower shall not have so made such
payment in full to Agent, each Lender shall repay to Agent forthwith on demand
the portion of such amount distributed to such Lender for which Agent did not in
fact receive payment from or on account of Borrower together with interest
thereon, for each day from the date such amount is distributed to such Lender
until the date such Lender makes such repayment to Agent, at the Floating Rate.
Borrower shall not be liable for Agent's failure to make such distributions to
Lenders.

                  Section 2.13      INCREASED COSTS; OVERRIDING EVENTS.

                  (a) In the event of the imposition of any Restraint which
shall prohibit or restrict the making or maintaining of the Loan or the charging
of interest thereon, Borrower agrees that Agent shall have the right in good
faith:

                      (i) to comply with any such Restraint and to require the
conversion of the Floating Rate to an alternative interest rate (if available or
determinable) (Agent shall use its reasonable best efforts to provide Borrower
with a rate of interest commensurate to the Floating Rate or a rate of interest
consistent with loans and borrowers of a similar type);

                      (ii) to permit compliance with such Restraint; or

                      (iii) if an alternative interest rate is not available or
determinable, to require repayment in full of the outstanding principal amount
of the Loan together with accrued interest thereon on the earlier of:

                         (A) immediately, if Lenders may not lawfully continue
to fund and maintain the Loan to such day; PROVIDED, HOWEVER, in the event
Borrower cannot make such immediate payment, Borrower will not be required to
pay interest at the Default Rate for a period of one hundred eighty (180) days
from the date of such request by Agent; or


<PAGE>
                                       30


                         (B) sixty (60) days after written notice (notified by
telecopy or telex) to Borrower to repay the Loan in full, or such longer period
(not to exceed one hundred eighty (180) days) after the date of such written
notice as may be reasonably required for Borrower to repay the Loan in full.

                  (b) In the event of the imposition of any Restraint which
shall make it impossible or unlawful for Lenders to give effect to or to
maintain any of their obligations under this Agreement (except as noted in
clause (a) above), then except as provided in SECTION 2.13(c) hereof, Agent may
give notice of such fact to Borrower whereupon Lenders' obligations hereunder
shall immediately terminate and Borrower shall, within sixty (60) days after
receipt of such notice (or within such shorter period as may be specified in the
relevant Restraint thereof) or such longer period (not to exceed one hundred
eighty (180) days) as may be reasonably required for Borrower to repay the Loan
in full) repay Agent in full the outstanding principal amount of the Loan
together with accrued interest thereon and any other charges due to Lenders
hereunder, excluding the Early Prepayment Premium and, in respect of a Restraint
based on a change of the laws of the Federal Republic of Germany, excluding the
Prepayment Premium.

                  (c) If a Restraint requires that any Lender transfer the Loan
from the jurisdiction in which it was originally made or then currently held to
an office of such Lender in another jurisdiction and the transfer shall:

                      (i) impose, modify or deem applicable any liquidity,
reserve, capital adequacy, special deposit or similar requirement against any
assets of, deposits with or for the account of, or loans by such Lender (or its
Lending Office), or

                      (ii) impose on such Lender (or its Lending Office) any
other conditions with respect to this Agreement (other than Taxes, Other Taxes
or other liabilities covered by SECTION 2.10 hereof), and the result of any of
the foregoing is to increase the cost to such Lender (or its Lending Office) of
giving effect to the terms of this Agreement or of agreeing to make or making,
funding or maintaining the Loan, then in lieu of SECTION 2.13(b) hereof, upon
notification of such amount by Agent, Borrower shall either (i) promptly
reimburse Agent for such actual, out-of-pocket increased costs or (ii) prepay
the entire outstanding principal of the Loan and any interest accrued thereon
(in which event, the Early Prepayment Premium shall not be due). Lenders shall
use their commercially reasonable efforts to minimize additional amounts due
hereunder (including, without limitation, making any filings that are necessary
to minimize or eliminate the effect of the Restraint and assigning their
respective interests in the Loan to a branch or other Lender to which the
Restraint is not applicable).

                  (d) A certificate prepared in good faith setting forth the
basis for the determination of the facts, or the increased costs as noted in
subsections (a), (b) and (c) of this


<PAGE>
                                       31


SECTION 2.13, submitted by Agent to Borrower shall, absent manifest error, be
presumptive evidence of such actual, out-of-pocket increased costs.

                  Section 2.14      COMMITMENT FEE.

                  Borrower shall pay to Agent on the Closing Date for the
account of Lenders a non-refundable commitment fee in the amount of Three
Hundred Twenty Thousand Dollars ($320,000).

                  Section 2.15      ARRANGEMENT FEE.

                  (a) Borrower shall pay to Agent on the Closing Date a
non-refundable arrangement fee in the amount of Eight Hundred Eighty Thousand
Dollars ($880,000).

                  (b) Borrower shall pay to MCM Consulting Group on the Closing
Date a non-refundable arrangement fee in the amount of Four Hundred Thousand
Dollars ($400,000).

                  Section 2.16  ADMINISTRATION FEE.
 .
                  Borrower shall pay to Agent, on the first day of each calendar
quarter commencing January 1, 2000 during the Term, a non-refundable
administration fee in the amount of Twenty-Two Thousand Five Hundred Dollars
($22,500).

                  Section 2.17      LENDING OFFICE.

                  The Loan shall be made by each Lender from the office
identified as its Lending Office hereunder or from such other branch or
affiliate of each such Lender as each such Lender may designate to Borrower and
Agent in writing as its Lending Office.


                                    ARTICLE 3
                         REPRESENTATIONS AND WARRANTIES

                  Borrower represents and warrants to Lenders, as of the date
hereof, that:

                  Section 3.1 GOOD STANDING OF BORROWER AND ITS MANAGING
MEMBERS.

                  Borrower is a limited liability company and is organized,
existing and in good standing under the laws of the State of Delaware, and is
qualified to do business in Illinois. 77WWLP is a limited partnership,
organized, existing and in good standing under the laws of the State of
Illinois. Prime is a limited partnership, organized, existing and in good
standing under

<PAGE>
                                       32


the laws of the State of Delaware, and is qualified to do business in
Illinois. The Trust is a real estate investment trust, organized, existing
and in good standing under the laws of the State of Maryland.

                  Section 3.2 AUTHORITY OF BORROWER.

                  Borrower has full power and authority to purchase and own the
Premises, to enter into this Agreement, to make the borrowings under this
Agreement, to execute and deliver the Loan Documents, and to incur and perform
the obligations provided for in the Loan Documents, all of which have been duly
authorized by all proper and necessary action. Except for those consents or
approvals already obtained, no consent or approval of any Governmental Authority
is required on the part of Borrower as a condition to the validity or
performance of any Loan Documents.

                  Section 3.3 AUTHORIZATIONS.

                  All authorizations, consents, approvals, registrations,
exemptions and licenses with or from Governmental Authorities which are
necessary for the borrowing, the execution and delivery of all Loan Documents,
and Borrower's performance under all Loan Documents have been effected or
obtained and are in full force and effect.

                  Section 3.4 BINDING AGREEMENT.

                  The Note and all other Loan Documents as executed and
delivered concurrently with this Agreement for value received, constitute, the
valid and legally binding obligations of Borrower enforceable in accordance with
their terms, subject only as to enforcement, bankruptcy, insolvency,
reorganization and other laws of general applicability relating to or affecting
creditors' rights and to general principles of equity.

                  Section 3.5 LITIGATION.

                  There are no proceedings or investigations pending against
Borrower or, to the best knowledge of Borrower, threatened before any court or
arbitrator or before or by any Governmental Authority which, in any one case or
in the aggregate, if determined adversely to the interests of Borrower would
have a material adverse effect on the business, Premises, Leasehold Premises,
condition (financial or otherwise) or operations of Borrower or its sole member.


<PAGE>
                                       33


                  Section 3.6 NO CONFLICTS.

                  There is no statute, regulation, rule, order or judgment, and
no provision of any mortgage, deed of trust, indenture, contract or agreement to
which Borrower is a party which would prohibit, conflict with or in any way
prevent the execution, delivery or carrying out of the terms of any Loan
Documents by Borrower in any material manner.

                  Section 3.7 FINANCIAL CONDITIONS.

                  The financial statements heretofore delivered to Agent fairly
present the financial condition of Borrower, as of the dates and for the periods
referred to, and have been prepared in accordance with Generally Accepted
Accounting Principles consistently applied throughout the periods involved.
There have been no material adverse changes in the (a) business, condition
(financial or otherwise) or operations of Borrower, or (b) to Borrower's
knowledge, Premises or the Leasehold Premises, which would materially, adversely
affect Borrower's ability to comply with its obligations under the Loan
Documents.

                  Section 3.8 EMPLOYEE BENEFIT PLANS.

                  Borrower (a) is not and will not be an "employee benefit plan"
(as defined in Section 3(3) of ERISA), which is subject to Title I of ERISA, and
the assets of Borrower do not and will not constitute"plan assets" of one or
more such plans for purposes of Title I of ERISA, and (b) Borrower is not
subject to state statutes regulating investments and fiduciary obligations with
respect to "governmental plans".

                  Section 3.9 GOVERNMENTAL PLAN.

                  Borrower is not and will not be a "governmental plan" (within
the meaning of Section 3(32) of ERISA) and transactions by or with Borrower are
not and will not be subject to state statutes applicable to Borrower regulating
investments of and fiduciary obligations with respect to governmental plans.

                  Section 3.10 INVESTMENT COMPANY.

                  Borrower is not (a) an "investment company", an "affiliated
person" of, "promoter" or "principal" underwriter for or a company "controlled"
by an "investment company", within the meaning of the Investment Company Act of
1940, as amended, (b) a "holding company" or a "subsidiary company" of a
"holding company" or an "affiliate" of either a "holding company" or a
"subsidiary company" within the meaning of the Public Utility Holding Company
Act of 1935, as amended, or (c) subject to any other Law that purports to
restrict or regulate its ability to borrow money. The making and funding of the
Loan by Lenders, the application of the proceeds


<PAGE>
                                       34


and repayment thereof by Borrower and the consummation of the transactions
contemplated by this Agreement and the other Loan Documents will not violate any
Law, including, without limitation, any provision of such Acts or any rule,
regulation or order issued by the Securities and Exchange Commission thereunder.

                  Section 3.11 HAZARDOUS MATERIALS.

                  Neither Borrower nor its sole member is undertaking, and has
not completed, either individually or together with other potentially
responsible parties, any investigation or assessment (other than investigations
and/or assessments made in connection with the Environment Site Assessment) or
remedial or response action relating to any actual or threatened release,
discharge or disposal of Hazardous Materials at the Premises or the Leasehold
Premises in violation of applicable laws, either voluntarily or pursuant to the
order of any Governmental Authority or the requirements of any Environmental
Law; and, to Borrower's knowledge, all Hazardous Materials generated, used,
treated, handled or stored at, or transported to or from, the Premises or the
Leasehold Premises have been disposed of in a manner not reasonably expected to
result in material liability to Borrower or any of its members.

                  Section 3.12 SOLVENCY.

                  Borrower, its sole member, Prime and Trust are Solvent.

                  Section 3.13 BORROWER'S ADDRESS.

                  The location of Borrower's and its sole member's principal
place of business and chief executive office is as follows:

                  c/o Prime Group Realty Trust
                  77 West Wacker Drive, Suite 3900
                  Chicago, Illinois  60601

                  c/o Prime Group Realty, L.P.
                  77 West Wacker Drive
                  Chicago, Illinois  60601

                  Section 3.14 FOREIGN PERSON.

                  Neither Borrower nor its sole member is a "foreign person"
within the meaning of ss 1445(f)(3) of the Code (a "FOREIGN PERSON").


<PAGE>
                                       35


                  Section 3.15 BANKRUPTCY.

                  No bankruptcy, reorganization or insolvency proceedings are
pending or contemplated either by Borrower or, to the best of Borrower's
knowledge, against Borrower (or, if Borrower is a partnership or a limited
liability company, any of its general partner(s) or managing member(s)).

                  Section 3.16 COMPLIANCE WITH LAWS.

                  To the best of Borrower's knowledge, the Premises, the
Leasehold Premises and the current intended use thereof by Borrower comply in
all material respects with all applicable restrictive covenants, zoning
ordinances, subdivision and building codes, flood disaster laws, health and
occupational laws having jurisdiction over the Premises and the Leasehold
Premises. The Premises constitutes one or more separate tax parcels for purposes
of ad valorem taxation. To the best of Borrower's knowledge, the Premises and
the Leasehold Premises do not require any rights over, or restrictions against,
other property in order to comply with any of the aforesaid Laws which have not
been obtained and provided to Agent or its counsel for its review and approval.

                  Section 3.17 UTILITY SERVICE.

                  All utility services necessary and sufficient for the full
use, occupancy and operation of the Premises and the Leasehold Premises for
their intended purposes are available to the Premises and the Leasehold
Premises, as applicable, including water, storm sewer, sanitary sewer, gas,
electric, cable and telephone facilities, through public rights-of-way or
perpetual private easements approved by Agent.

                  Section 3.18 ACCESS.

                  All streets, curb cuts and driveways necessary for access to
and full use, occupancy, operation and disposition of the Premises have been
completed, have been dedicated to and accepted by the appropriate municipal
authority and are open and available to the Premises and the Improvements
without further condition or cost to Borrower.

                  Section 3.19 INSURANCE.

                  As of the date of this Agreement, all insurance required by
the terms of the Mortgage is in full force and effect and none of the premiums
payable therefore have been financed.


<PAGE>
                                       36


                  Section 3.20 RENT ROLL.

                  Borrower has delivered a true and correct (in all material
respects) and complete schedule (a "RENT ROLL") of all Leases affecting the
Premises and the Leasehold Premises as of the date hereof reasonably
satisfactory to Agent and its counsel, which, information thereon is accurate,
in all material respects, in respect of each Lease, and Borrower has delivered
to Agent and its counsel for its review and approval true, correct and complete
copies of all Leases described in the Rent Roll.

                  Section 3.21 NO RELIANCE ON AGENT OR LENDERS.

                  Borrower is a sophisticated owner, operator, developer,
manager and investor in real estate and its decision to enter into this Loan is
based upon its own independent expert evaluation of the terms, covenants,
conditions and provisions of the Loan Documents and such other matters,
materials and market conditions and criteria which Borrower and such parties
deemed relevant. Borrower and its Affiliates have not relied in entering into
this Agreement, the Loan or the other Loan Documents upon any oral or written
information, representation, warranty or covenant from Lenders, or any of its
representatives, employees, Affiliates or agents other than the representations
and warranties, if any, of Lenders contained herein. Borrower, on behalf of
itself and its Affiliates, further acknowledges that no employee, agent or
representative of Lenders have been authorized to make, and that Borrower and
its Affiliates have not relied upon, any statements, representations, warranties
or covenants other than those specifically contained in this Agreement and in
the other Loan Documents. Without limiting the foregoing, Borrower acknowledges
that Lenders have made no representations or warranties as to the Loan or the
Premises (including, without limitation, the cash flow of the Premises, the
value, marketability, condition or future performance thereof, the existence,
status, adequacy or sufficiency of the Leases, the tenancies or occupancies of
the Premises, or the sufficiency of the cash flow of the Premises, to pay all
amounts which may become due from time to time pursuant to the Loan).


                                    ARTICLE 4
                       AFFIRMATIVE AND NEGATIVE COVENANTS

                  Section 4.1 AFFIRMATIVE COVENANTS.

                  So long as Borrower may borrow hereunder and until payment in
full of the Note and all sums borrowed under this Agreement and performance of
all other obligations of Borrower under this Agreement and the Loan Documents,
Borrower shall do the following:


<PAGE>
                                       37


                  (a) Furnish to Agent:

                      (i) as soon as available but in no event more than one
hundred twenty (120) days after the close of Borrower's fiscal year, a copy of
the annual audit report relating to Borrower in reasonable detail satisfactory
to Agent and prepared in accordance with Generally Accepted Accounting
Principles by Ernst & Young or other certified independent public accountants
reasonably satisfactory to Agent, together with financial statements consisting
of a balance sheet as of the end of such fiscal year and statements of income
and cash flows of Borrower for such year;

                      (ii) as soon as available but in no event more than one
hundred twenty (120) days after the close of the Trust's fiscal year, a copy of
the annual financial statement relating to the Trust, in reasonable detail
satisfactory to Agent and prepared in accordance with Generally Accepted
Accounting Principles, together with financial statements consisting of a
balance sheet as of the end of such fiscal year and statements of income and
cash flows of the Trust for such year.

                      (iii) promptly upon receipt thereof, copies of any reports
and management letters submitted to Borrower by such accountants in connection
with any annual or interim audit of the books of Borrower;

                      (iv) within forty (40) days after June 30 of each calendar
year during the Term, an updated Rent Roll, quarterly leasing status reports and
unaudited financial statements for the Premises certified by an officer of the
Trust;

                      (v) within forty-five (45) days after December 31 of each
calendar year during the Term, an updated Rent Roll and quarterly leasing status
reports for the Premises certified by an officer of the Trust;

                      (vi) within forty-five (45) days after December 31 of each
calendar year during the Term, an updated operating budget for the Premises, and
quarterly operating budgets thereafter, for the Premises certified by an officer
of the Trust;

                      (vii) within forty-five (45) days after December 31 of
each calendar year during the Term, an updated operating statement for the
Premises, and quarterly operating statements thereafter, for the Premises
certified by an officer of the Trust;

                      (viii) within thirty (30) days after the end of each
calendar quarter during the Term, beginning with the fourth (4th) full calendar
quarter after the Closing Date, a calculation of Net Operating Income for each
of the previous four (4) calendar quarters and the Debt Service


<PAGE>
                                       38


Coverage Ratio associated with such four-quarter period, each certified by an
officer of the Trust; and

                      (ix) such other financial, statistical and general
information, readily available to or producible by Borrower, as Agent may
reasonably request.

                  (b) Pay all of its indebtedness as and when the same shall
come due, provided Borrower may contest any of the same as long as such contest
is pursued in good faith and with due diligence and does not adversely affect
Lenders.

                  (c) Satisfy and comply in all material respects with all
Governmental Requirements applying to and affecting the Premises and the
Leasehold Premises and shall obtain and maintain in full force and effect until
the Loan has been repaid in full all necessary licenses, permits and similar
matters with respect to the Premises and the Leasehold Premises, all without
cost or expense to Lenders where failure to do so would result in a material
adverse effect on the business, Premises, Leasehold Premises, condition
(financial or otherwise) or operations of Borrower, it being understood that
Borrower may contest any of same as long as such contest is pursued in good
faith and with due diligence and does not adversely affect Lenders. Immaterial
violations which Borrower is proceeding to cure and which do not result in a
Lien being created on the Premises or the Leasehold shall not cause Borrower to
be in default of this SECTION 4.1(c).

                  (d) Permit Agent or its representative and any Governmental
Authority, upon reasonable notice, to visit and inspect the Premises or the
Leasehold Premises at any time during normal business hours and at all other
reasonable times; PROVIDED, HOWEVER, that all such visits and inspections shall
be scheduled so as to cause minimal disruption to the business and operation of
Borrower, Leasehold Premises, Premises and any tenants thereof. Agent hereby
acknowledges and agrees that all such rights to visit and inspect are subject to
any and all limitations and/or restrictions of tenants or other occupants now or
hereafter in the Premises or the Leasehold Premises.

                  (e) Give prompt written notice to Agent of:

                      (i) any action or proceeding instituted by or against
Borrower in any court or by any Governmental Authority, or of any such
proceedings of which Borrower obtains actual knowledge threatened against
Borrower, which action or proceeding may have a material adverse effect upon the
business, operations, Premises, Leasehold, assets or conditions (financial or
otherwise), of Borrower; and

                      (ii) any other action, event or condition of any nature
known to Borrower or of which it should have knowledge which constitutes an
Event of Default, or a default of Borrower under any material contract
instrument or agreement to which Borrower is a party or


<PAGE>
                                       39


by which Borrower or any of its properties or assets may be bound or to which
any may be subject, which default may have a material adverse effect upon the
business, operations, properties, assets or conditions (financial or otherwise),
of Borrower.

                  (f) Deliver to Agent all items, documents, writings, reports
and information reasonably required by Agent to consummate the Loan.

                  (g)(i) Agent shall hold back, pursuant to and in accordance
with the Cash Collateral Agreement, from the Loan proceeds and deposit
$2,500,000 into the Cash Collateral Account on the Closing Date (which
depositing Borrower acknowledges and agrees to). Borrower shall deliver to Agent
such agreements and other documents and instruments necessary to grant Agent a
perfected first priority security interest in the Cash Collateral Account. Upon
the satisfaction in full of all of Borrower's obligations under the Loan
Documents, Agent shall, within five (5) days after receipt by Agent of the
written request of Borrower, instruct the depository under the Cash Collateral
Account to pay over to Borrower all cash or collateral remaining in the Cash
Collateral Account, together with any interest accrued thereon.

                      (ii) In the event that Borrower exercises the Second
Extension Period Option, Borrower shall, prior to the First Extension Period
Termination Date, deposit into the Cash Collateral Account $5,000,000, which
amount shall be held pursuant to and in accordance with the Cash Collateral
Agreement.

                      (iii) In the event that any termination fees are payable
to Borrower on account of the early termination of any Lease during the Term,
such fees shall be deposited in the Cash Collateral Account, which amount shall
be held pursuant to and in accordance with the Cash Collateral Agreement.

                      (iv) Any and all funds deposited into the Cash Collateral
Account shall be invested in Permitted Investments and any interest carried on
such funds shall be paid to Borrower from time to time, but not more frequently
than monthly in accordance with the Cash Collateral Agreement.

                      (v) Notwithstanding anything to the contrary set forth
previously in this SECTION 4.1(G), Borrower shall have the right to withdraw up
to an aggregate amount of $2,500,000 (and, during the Second Extension Period
Option, if any, an aggregate amount of (a) $7,500,000) of the funds on deposit
in the Cash Collateral Account plus (b) any amounts deposited into the Cash
Collateral Account pursuant to Section 3(c) of the Cash Collateral Account for
Tenant Improvement/Leasing Commission Costs made by or at the direction of
Borrower from time to time in accordance with the terms of the Cash Collateral
Agreement upon the satisfaction of the following terms and conditions: (A) no
Event of Default has occurred and is continuing; (B) Borrower has expended, out
of funding sources other than the Loan Proceeds, at least


<PAGE>
                                       40


$2,500,000 for Tenant Improvement/Leasing Commissions Costs or other costs
associated with Capital Improvements made at or to the Mortgaged Property; (C)
any amounts so withdrawn will be applied only to the payment or reimbursement of
Tenant Improvement/Leasing Commission Costs (except for interest distributed
pursuant to Section 3(d) of the Cash Collateral Agreement) with respect, related
or pursuant to any Lease; and (D) Borrower shall have delivered to Agent a
certificate executed by an officer of the Trust on behalf of Borrower confirming
the truth of clauses (A), (B), and (C) of this SECTION 4.1(G)(IV), and Borrower
shall deliver, or will have previously delivered, to Agent a copy of the fully
executed Lease or the amendment to the Lease, or the final draft thereof, to
which such Tenant Improvement/Leasing Commission Costs relate (or, in lieu
thereof, a summary of the material terms of such lease, with a full copy to be
delivered within thirty (30) days). Disbursements to be made under this
subsection (v) shall be paid by the Depositary (as defined in the Cash
Collateral Agreement) to Borrower within then (10) days after satisfaction of
the foregoing conditions precedent.

                  (h) Operate the Premises at all times as a class "A" office
building in accordance with all applicable Laws, cause the Premises to be
managed by the Manager in accordance, in all material respects, with the terms
of the Management Agreement, perform and cause Manager to observe all the terms
and provisions of the Management Agreement to be performed or observed by it in
all material respects, maintain the Management Agreement in full force and
effect and enforce the Management Agreement in accordance with its terms in all
material respects, in each case subject to the provisions of SECTION 4.2(g)
hereof. Notwithstanding the foregoing or anything in SECTION 4.2(g) hereof, if
the Management Agreement is terminated in accordance with the terms hereof, any
successor manager selected hereunder by Agent or Borrower to manage the Premises
shall be recognized in the City of Chicago as a first-class manager of a stature
at least comparable, in Agent's reasonable judgment, to the preceding Manager,
or a qualified (in Agent's reasonable judgment) independent office building
management company managing similar buildings. Any agreement between Borrower
and the new Manager shall be subject to Agent's prior written approval (which
approval shall not be unreasonably withheld, conditioned or delayed) provided
that (i) in Agent's reasonable judgment such agreement is no more favorable to
the new Manager and no less favorable to Agent than the Management Agreement
with the preceding Manager; and (ii) the new Manager enters into an agreement to
subordinate its management fees in the same form as the preceding Manager or in
such other form as Agent shall have approved in Agent's reasonable discretion.

                  (i) Pay and discharge before the same shall become delinquent,
(i) all Impositions imposed upon or that become a Lien upon the Premises;
PROVIDED, HOWEVER, that Borrower shall not be required to pay or discharge any
such Imposition that is being contested in good faith and by proper proceedings
and as to which appropriate reserves are being maintained in accordance with the
provisions of and as provided by this Agreement, unless and until any Lien
resulting therefrom attaches to its property and becomes enforceable against its
other creditors and the enforcement thereof is not stayed pending resolution of
the subject contest.


<PAGE>
                                       41


                  (j) Comply, and require all tenants in accordance with their
applicable Leases and other Persons operating or occupying the Premises or the
Leasehold Premises to comply, in all material respects, except as may be
permitted by and provided in this Agreement, with all applicable Environmental
Laws and Environmental Permits; obtain and renew all Environmental Permits
necessary for its operations, the Leasehold Premises and the Premises, if any,
and to the extent required by any Environmental Law, conduct any investigation,
study, sampling and testing, and undertake any cleanup, removal, remedial or
other action necessary to remove from the Premises or the Leasehold Premises, as
applicable, and clean up all Hazardous Materials which are reasonably expected
to result in material liability to Borrower, in accordance with the requirements
of all Environmental Laws; PROVIDED, HOWEVER, that Borrower shall not be
required to undertake any such cleanup, removal, remedial or other action to the
extent that its obligation to do so is being contested in good faith and by
proper proceedings and appropriate reserves are being maintained with respect to
such circumstances.

                  (k) Preserve and maintain its existence, legal structure,
legal name, rights (charter and statutory), permits, licenses, approvals,
privileges and franchises; PROVIDED, HOWEVER, that Borrower shall not be
required to preserve any right, permit, license, approval, privilege or
franchise if Borrower shall determine that the preservation thereof is no longer
desirable in the conduct of the business of Borrower, as the case may be, and
that the loss thereof is not disadvantageous in any material respect to Borrower
or Lenders and on the condition that Borrower notifies Agent in writing of any
such change, promptly thereafter.

                  (l) To the extent required by Environmental Law, establish and
maintain an operations and maintenance program with respect to any Asbestos and
Asbestos-containing Materials located at the Premises or the Leasehold Premises
which operations and maintenance program shall comply with all applicable Laws,
conform in all material respects to applicable guidelines established by any
Governmental Authority and otherwise be designed in all material respects to
incorporate all prudent and reasonable safeguards in order to minimize any
health risk to patients, residents, employees and guests at the Premises and the
Leasehold Premises from the presence of Asbestos or Asbestos-containing
Material.

                  (m) Maintain or cause to be maintained the Premises as a class
"A" office building, in good order, repair and operating condition, ordinary
wear and tear and the occurrence of any casualty or condemnation excepted, (ii)
make or cause to be made promptly, when necessary, all necessary repairs,
restorations, renewals, replacements, additions and improvements thereto,
interior and exterior, structural and nonstructural, foreseen and unforeseen, or
otherwise necessary to ensure that the same shall not in any way be diminished
or impaired in any material respect, (iii) not cause or knowingly allow the
Premises or the Leasehold Premises to be wasted and (iv) complete, to Agent's
satisfaction, all of the maintenance and repair work as specified in the
Deferred Maintenance Report.


<PAGE>
                                       42


                  (n) Keep the Premises and the Leasehold Premises equipped as
now operated and will replace all worn out or obsolete equipment in order to
maintain and operate the Premises as a class "A" office building and comply with
all Laws; PROVIDED, HOWEVER, that Borrower shall not be required to replace any
equipment if Borrower shall determine that such replacement is no longer
necessary or desirable in the conduct of the business of Borrower and that the
non-replacement of such equipment does not adversely affect, in any material
respect, Borrower or Lenders.

                  (o) Cause all Leases, and all amendments, renewals and
extensions thereof, to (i) provide for rental rates and terms which, in
Borrower's reasonable judgment, are comparable to existing local market rates
and terms, (ii) be arms-length transactions and (iii) be written on the standard
form of lease, which is hereby approved by Agent without material changes
therefrom (or, with respect to any amendment, renewal or extension of an
existing Lease, on the form of such existing Lease). Upon request, Borrower
shall furnish Agent with executed copies of all Leases (including any amendments
or modifications). No material changes may be made to Agent-approved standard
form of lease without the prior written consent of Agent, which consent shall
not be unreasonably withheld, conditioned or delayed. Without Lender's prior
consent (which consent shall not be unreasonably withheld, conditioned or
delayed), Borrower shall not (1) amend or terminate any Lease with any Tenant
whose Lease or Leases demise in the aggregate at least 30,000 square feet of the
rentable square feet of the Premises, and (2) amend or terminate any Lease with
any Tenant so as to cause a material adverse effect on the Net Operating Income,
and (3) enter into any new Lease which demises in the aggregate at least 45,000
square feet of the rentable square feet of the Premises. Within ten (10)
Business Days of receipt by Lender of written notification by Borrower to Lender
of Lender's need to provide its consent pursuant to this SECTION 4.1(o), Lender
shall provide Borrower with its written consent, which consent shall not be
unreasonably withheld, conditioned or delayed, or objection, and stating the
reason for such objection. If such consent or objection is not received by
Borrower within the time frame provided for in the previous sentence, Lender's
consent to the specific request shall be deemed granted, PROVIDED that such
consent shall not be deemed granted after the occurrence and during the
continuance of any Event of Default.

                  (p) Use reasonable efforts to obtain, within ninety (90) days
of the Closing Date, Subordination, Non-Disturbance and Attornment Agreements
(the "SNDAS") with respect to the Leases from each Tenant in favor of Agent, in
form and substance acceptable to Agent; PROVIDED, HOWEVER, that a Tenant's
failure to execute an SNDA pursuant to the terms of such Tenant's Lease shall
not be deemed to be a default of Borrower under this SECTION 4.1(P).

                  (q) Now and in the future remain Solvent and pay its debts
from its assets as the same shall be due and payable unless such debts are
contested by Borrower in good faith, and such contest is pursued continually and
diligently.


<PAGE>
                                       43


                  (r) Do, will do or caused to be done all things necessary to
preserve its limited liability company status and/or existence.

                  (s) Maintain its books, records and bank accounts separate
from those of its Affiliates and any constituent party.

                  (t) Be, and at all times hold itself out to the public as a
legal entity separate and distinct from any other entity (including any
Affiliate of Borrower, any constituent party or any Affiliate of any constituent
party).

                  (u) Now and in the future maintain its assets in such a manner
that it will not be costly or difficult to segregate, ascertain or identify its
individual assets from those of any constituent party or any Affiliate of any
constituent party, or any other Person.

                  (v) Prior to the date hereof, and from time to time upon the
reasonable request of Lender, the Borrower shall deliver to Lender, in form and
substance satisfactory to Lender, such endorsements to the Mortgage Insurance
Policy and such preliminary title reports and other title or lien searches
(including UCC searches) and tax service contracts as Lender may reasonably
require from time to time.

                  (w) Prior to the date that is ten (10) days after the date
hereof (i) cause there to be executed by an unrelated third-party an interest
rate hedge guaranty, acceptable to Agent, indemnifying Lenders against interest
that accrues on the Loan at an annual rate in excess of 8%, such interest rate
hedge guaranty shall be collaterally assigned to Agent pursuant to an assignment
in a form acceptable to Agent; and (ii) cause there to be executed by the
unrelated third-party to the interest rate hedge guaranty a payment direction
letter in substantially the same form attached hereto as Exhibit D. Until such
time as the guaranty described in the immediately preceding sentence is in
place, Prime shall be personally liable for and guaranty to Lenders the interest
that accrues on the Loan at an annual rate in excess of 8%.

                  (x) Within a reasonable period of time after Agent's request,
Borrower agrees to provide at its sole cost and expense updated engineering
and/or environmental reports satisfactory to Agent, not to exceed one (1) time
per year, except upon the occurrence of and during the continuance of an Event
of Default.

                  Section 4.2 NEGATIVE COVENANTS.

                  Until payment in full of the Note and all sums borrowed under
this Agreement and performance of all other obligations of Borrower under this
Agreement and the Loan Documents, Borrower shall not do the following:


<PAGE>
                                       44


                  (a) Mortgage, pledge, grant or permit to exist a security
interest in or a lien upon any of its assets now owned or hereafter acquired,
without first obtaining the written consent of Agent which consent cannot be
unreasonably withheld, conditioned or delayed; PROVIDED, HOWEVER, that Borrower
may contest any Lien upon its assets as long as such contest is pursued in good
faith and with due diligence and does not materially adversely affect Lenders.
Notwithstanding the aforementioned, Borrower may enter into such equipment
financing contracts, installment sales contracts and the like in order to
finance the reasonable day-to-day equipment needs of Borrower at the Premises.

                  (b) Institute or cause to be instituted, by an issuer or
underwriter of, or be a party to any public offering with respect to the
Premises within the meaning of the Securities Act of 1933 and the Securities and
Exchange Act of 1934.

                  (c) Enter into or suffer to exist any agreement prohibiting or
conditioning the creation or assumption of any Lien upon any of its property or
assets other than in favor of Lenders; PROVIDED, HOWEVER, that Borrower may
contest any such lien upon on its property or assets as long as such contest is
pursued in good faith and with due diligence and does not adversely affect
Lenders.

                  (d) Make any material change in the nature of its business as
carried on at the date hereof or engage in any business or activity other than
the ownership, operation and maintenance of the Premises and the Leasehold
Premises, and activities incidental thereto.

                  (e) Guarantee payment of any obligation of any Person or
pledge its assets for the benefit of any third party, including the sole member,
principal or Affiliate of Borrower, as the case may be.

                  (f) File or consent to the filing of any petition, either
voluntary or involuntary, to take advantage of any applicable insolvency,
bankruptcy, liquidation or reorganization statute, or make an assignment for the
benefit of creditors.

                  (g) Without Agent's prior consent (which consent shall not be
unreasonably withheld, conditioned or delayed): (i) cancel or terminate the
Management Agreement or consent to or accept any cancellation or termination
thereof, (ii) amend or otherwise modify, in any material respect, the Management
Agreement, (iii) waive any material default under or breach of the Management
Agreement, or (iv) agree in any manner to any other amendment, modification or
change of any material term or condition of the Management Agreement, in each
case of each of clauses (i) through (iv) inclusive, Agent's consent shall be
required only if such action would materially and adversely impair the interest
or rights of Lenders. Agent's withholding of its consent to a new property
manager shall not be deemed to be unreasonable if the new property


<PAGE>
                                       45


manager, in Agent's sole reasonable determination, is not a generally recognized
manager of first-class office buildings in Chicago.

                  (h) Change its Fiscal Year unless such change would not
adversely affect or alter in any material respect the calculation of Debt
Service Coverage Ratio pursuant to this Agreement.

                  (i) Now or in the future own any encumbered asset or property
other than (i) the Premises and the Leasehold Premises, and (ii) incidental
personal property necessary for the ownership or operation of the Premises.

                  (j) Except as expressly provided in this Agreement, enter into
any agreement to borrow funds, including the entering into of equipment
financing contracts, installment sales contracts, sale-lease back transactions
or the like, from any party without the prior approval of Agent. Notwithstanding
the preceding sentence or other provision of this Agreement or any other Loan
Document, at any time and from time to time without Agent's prior approval:

                      (i) Borrower may obtain additional financing necessary for
the reasonable day-to-day operations of the Premises; PROVIDED that (A)
projected Net Cash Flow is sufficient to repay such amounts when they become due
and (B) such debt (w) includes customary repayment and amortization schedules,
(x) is unsecured, (y) is at all times subordinated to the lien of the Mortgage
and (z) cannot be terminated and the term thereof accelerated (other than by
repayment and satisfaction in full of same) prior to the repayment and
satisfaction in full of the indebtedness created hereunder;

                      (ii) Borrower may borrow funds from one or more direct or
indirect partners of Borrower and/or any of their respective Affiliates;
PROVIDED that such debt (x) is unsecured, (y) is at all times subordinated to
the lien of the Mortgage and (z) cannot be terminated and the term thereof
accelerated (other than by repayment and satisfaction in full of same) prior to
the repayment and satisfaction in full of the indebtedness created hereunder; or

                      (iii) 77WWLP, Prime or Trust may assign or pledge its
interest in Borrower to a financial institution that holds at least
$1,000,000,000 of real estate assets located in the United States in order to
secure financing of no more than $45,000,000 to 77WWLP, Prime or Trust, as the
case may be; PROVIDED that (A) Borrower is not the borrowing entity for such
debt and (B) such debt (1) includes customary repayment and amortization
schedules, (2) is not secured by the Premises, (3) is at all times subordinated
to the lien of the Mortgage, and (4) cannot be terminated and the term thereof
accelerated (other than by repayment and satisfaction in full of same) prior to
the repayment and satisfaction in full of the indebtedness created hereunder;
and (C) Borrower provides Agent with at least thirty (30) days prior written
notice thereof.


<PAGE>
                                       46


Any indebtedness described in clauses (i), (ii) and (iii) of this SECTION
4.2(j), a "QUALIFIED LOAN". Except as expressly provided in this Agreement,
Borrower shall not incur any further indebtedness or other obligations, other
than in the ordinary course of business, without the prior approval of Agent,
which approval Agent may grant or withhold in its sole discretion.

                  (k) Other than pursuant to the Cash Management System, now or
in the future make any loans or advances to any third party (including any
constituent party or any affiliate of Borrower, or any constituent party
thereof), other than tenants that are not Affiliates of Borrower in connection
with Leases relating to the Premises and the Leasehold Premises tenant
improvements thereunder.

                  (l) Amend, modify or otherwise change the certificate of
organization or operating agreement of Borrower in a manner which would
adversely affect Borrower's existence as a single purpose entity.

                  (m) Seek the dissolution or winding up, in whole or in part,
of Borrower or any of its sole member.

                  (n) Other than pursuant to the Cash Management System,
commingle the funds and other assets of Borrower with those of any constituent
party thereof, any Affiliate, or any constituent party, or any other Person.

                  (o) Now or in the future, hold itself out to be responsible
for the debts or obligations of any other Person.

                  (p) Cause, permit or allow the partition of the Premises.

                  (q) Without the prior written consent of Lender, which consent
or the denial thereof shall be in Lender's sole and absolute discretion: (i)
sell, convey, alienate, mortgage, encumber, pledge or otherwise transfer all or
any part of the Premises; (PROVIDED, HOWEVER, that the sale or transfer of the
Borrower's interest in the Ground Lease located on the Leasehold Premises in
accordance with Section 2.5(c) hereof shall not be deemed a transfer for
purposes of this Section 4.2(q)) or (ii) make a change in the Control of
Borrower, PROVIDED, HOWEVER, that, so long as notice thereof is provided to
Agent at least forty-five (45) days prior to such transfer, the following shall
not require Agent's prior consent: (1) up to 50% of 77WWLP's and/or Prime's
interest in Borrower may be transferred to a Permitted Transferee in a single or
series of transactions and (2) so long as a subordination agreement acceptable
to Agent is duly executed and provided to Agent, the interest in Borrower
described in SECTION 4.2(j)(iii) hereof may be transferred pursuant to such
SECTION 4.2(j)(iii) hereof. Notwithstanding any other provision of this SECTION
4.2(q) to the contrary so long as Prime retains Control of Borrower, up to 50%
of 77WWLP's and/or Prime's interest in Borrower may be transferred to any
Person. All


<PAGE>
                                       47


reasonable, actual out-of-pocket expenses of Lenders and Agent resulting from a
transfer pursuant to this SECTION 4.2(Q) shall be paid, on Agent's demand, by
Borrower. Nothing herein is intended to or shall restrict transfer of shares of
the Trust.

                  (r) (i) Install or otherwise use or acquire for use in
connection with the Collateral any Personal Property (including replacement
Personal Property pursuant to clause (C) below) which is not owned or leased by
Borrower free and clear of all Liens (including conditional sale contracts) and
Rights of Others (other than Permitted Exceptions) or which is not a part of the
Collateral, or (ii) cause or permit the removal from the Premises or the
Leasehold Premises of any Personal Property of the Borrower which is installed
or otherwise used or acquired for use in connection with the Collateral, except
that so long as no Event of Default has occurred and is continuing, this clause
(t) shall not prohibit (A) the temporary removal of Personal Property for
repairs in the ordinary course of business, (B) the removal of Personal Property
of insignificant value which is not reasonably necessary or appropriate to the
efficient operation of the Premises or the Leasehold Premises, as the case may
be, or (C) the removal of obsolete, defective or worn out Personal Property
which has been replaced by other Personal Property of equal or greater
suitability and value which is intended for the same purpose. Upon the removal
of any Personal Property in compliance with clause (B) or (C) above, the
Borrower shall be permitted to transfer or otherwise dispose of such Personal
Property as the Borrower may determine.


                                   ARTICLE 5
                                     DEFAULT

                  Section 5.1 EVENTS OF DEFAULT.

                  The term "EVENT OF DEFAULT" as used herein shall mean the
occurrence or happening, at any time and from time to time, of any one or more
of the following which shall include by definition the expiration of any period
of grace or right to cure provided therein, provided there has been satisfied
any requirement in connection therewith for the giving of notice, lapse of time,
or happening of any further condition, event or act:

                  (a) if an Event of Default occurs under the Mortgage (as
defined in Section 22 thereof) after expiration of any period of grace or right
to cure provided therein, provided there has been satisfied any requirement in
connection therewith for the giving of notice, lapse of time, or happening of
any further condition, event or act;

                  (b) if Borrower shall fail to pay any portion of the Debt,
including, but not limited to, principal (including, without limitation, any
Annual Installment Payment), interest, fees or other amounts payable to Agent
under the Loan Documents within three (3) days after Borrower receives written
notice from Agent that such payment is overdue;



<PAGE>
                                       48


                  (c) if Borrower shall fail to comply with the provisions of
SECTION 4.1(G) hereof, within the time periods provided for therein;

                  (d) if Borrower fails to duly and promptly observe, perform
and discharge any covenant, term, condition or agreement contained in the Loan
Documents, other than any default described in the other paragraphs of this
SECTION 5.1, and such failure is not curable, or if curable such failure
continues for a period of thirty (30) days after written notice thereof from
Agent to Borrower, provided if such failure is not curable in thirty (30) days
Borrower shall have such additional time as is reasonably necessary in the good
faith opinion of Agent after consultation with Borrower to cure provided that
such cure is being diligently pursued;

                  (e) if any representation or warranty made by Borrower herein
or any statement or representation made in any certificate, report or opinion
delivered in connection herewith or in any of the Loan Documents, shall prove to
have been incorrect in any material respect on the date as of which made
(provided that if such misrepresentation or breach of warranty is capable of
being cured, Borrower shall have a period of thirty (30) days from the date
Borrower receives written notice from Agent or, if such misrepresentation or
breach of warranty is not curable within thirty (30) days, Borrower shall have
such additional time as is reasonably necessary in the good faith opinion of
Agent after consultation with Borrower to cure provided that such cure is being
diligently pursued);

                  (f) If (i) Borrower shall be in default beyond any notice,
grace or cure period under any other mortgage or security agreement covering any
part of the Premises and the Leasehold Premises whether it be superior or junior
in lien to the Mortgage, or (ii) subject to Borrower's right to contest as
provided in the Loan Documents, the Premises or the Leasehold becomes subject to
any mechanic's, materialman's or other lien (except a lien for local real estate
taxes and assessments not then due and payable unless contested by Borrower in
good faith, and such contest is pursued continually and with diligence) and such
lien is not removed within thirty (30) days after Agent delivers notice thereof
to Borrower;

                  (g) In the event that financing permitted by SECTION
4.2(j)(III) hereby is entered into on behalf of Borrower, any default (after the
expiration of all applicable notice, grace and opportunity to cure periods)
under such documents memorializing such financing; and

                  (h) If Borrower or Prime fails to perform any of the
obligations set forth in Section 6.1(m) hereof within ten (10) days after Agent
delivers written notice thereof to Borrower.


<PAGE>
                                       49


                  Section 5.2 REMEDIES.

                  Upon an Event of Default, Agent may, at its option, use any,
some or all of the following remedies, concurrently or consecutively.

                  (a) Agent may declare all principal, interest and other
amounts outstanding on the Loan immediately due and payable. Borrower expressly
waives a presentment, notice, demand and protest of any kind.

                  (b) Agent may exercise any and all of its rights and remedies
provided at law and under the Note, Mortgage and any other Loan Documents.

                  Section 5.3 REMEDIES CUMULATIVE AND CONCURRENT.

                  No right, power or remedy of Agent as provided in this
Agreement or in any of the Loan Documents is intended to be exclusive of any
other right, power, or remedy of Agent, but each and every such right, power or
remedy shall be cumulative and concurrent and in addition to any other right,
power or remedy available to Agent now or hereafter existing at law or in equity
and may be pursued separately, successively or concurrently at the sole
discretion of Agent. The failure of Agent to exercise any such right, power or
remedy shall in no event be construed as a waiver or release thereof.

                  Section 5.4 WAIVER, DELAY OR OMISSION.

                  No waiver of any Event of Default hereunder shall extend to or
affect any subsequent or any other Event of Default then existing, or impair any
rights, powers or remedies consequent thereon, and no delay or omission of Agent
to exercise any right, power or remedy shall be construed to waive any such
Event of Default or to constitute acquiescence therein.

                  Section 5.5 INDEMNITY.

                  Borrower hereby agrees that it will defend, indemnify and hold
harmless each Lender, and each of its affiliates, officers, directors, partners,
participants, employees and agents (each, an "INDEMNIFIED PARTY") from and
against, and shall reimburse the affected Indemnified Party for, any and all
actual, out-of-pocket losses, claims, damages, costs, expenses (including
reasonable attorney fees' and expenses), liabilities, fines, penalties and
charges arising out of claims made by Persons other than the Indemnified Parties
(collectively, the "LOSSES"), which are or may be imposed, or sustained by such
Indemnified Party by reason of: (a) ownership of the Mortgage, the Premises, the
Leasehold or any interest therein or receipt of any Rents therefrom; (b) any
accident, injury to or death of persons or loss of or damage to property
occurring in, on or about the Premises, the Leasehold Premises or any part
thereof or on the adjoining sidewalks,


<PAGE>
                                       50


curbs, adjacent property or adjacent parking areas, streets or ways; (c) any
use, nonuse or condition in, on or about the Premises, the Leasehold Premises or
any part thereof or on adjoining sidewalks, curbs, adjacent property or adjacent
parking areas, streets or ways; (d) any failure on the part of Borrower to
perform or comply with any of the terms of the Loan Documents; (e) performance
of any labor or services or the furnishing of any materials or other property in
respect of the Premises, the Leasehold Premises or any part thereof; (f) the
presence, disposal, escape, seepage, leakage, spillage, discharge, emission,
release, or threatened release of any Hazardous Substance or Asbestos on, from,
or affecting the Premises, the Leasehold Premises or any other property; (g) any
personal injury (including wrongful death) or property damage (real or personal)
arising out of or related to any Hazardous Substance or Asbestos on, from, or
affecting the Premises or the Leasehold Premises; (h) any lawsuit brought or
threatened, settlement reached, or government order relating to any Hazardous
Substance or Asbestos on, from, or affecting the Premises or the Leasehold
Premises; (i) any violation of the Environmental Laws, which are based upon or
in any way related to any Hazardous Substance or Asbestos on, from, or affecting
the Premises or the Leasehold Premises including, without limitation, the costs
and expenses of any remedial action in accordance with Laws, reasonable attorney
and consultant fees, investigation and laboratory fees, court costs, and
litigation expenses; (j) any failure of the Premises or the Leasehold Premises
to comply with any Laws in all material respects; (k) any representation or
warranty made in this Loan Agreement, the Note, the Mortgage or the other Loan
Documents being false or misleading in any material respect as of the date such
representation or warranty was made; (l) any claim by brokers, finders or
similar persons claiming to be entitled to a commission in connection with any
Lease or other transaction involving the Premises, the Leasehold Premises or any
part thereof under any legal requirement or any liability asserted against
Lenders with respect thereto; and (m) the claims of any lessee of all or any
portion of the Premises, the Leasehold Premises or any person acting through or
under any lessee or otherwise arising under or as a consequence of any Lease,
except to the extent that (i) such Losses resulted from the gross negligence or
willful misconduct of such Indemnified Party or (ii) in the case of the
foregoing clauses (f) through (i), Mortgagor establishes that such Losses
resulted from Hazardous Materials being placed on, above or under the Premises
or the Leasehold Premises only subsequent to any foreclosure by Agent (or any
assignee of Agent) or acceptance by Agent (or any designee of Agent) of a deed
in lieu of foreclosure with respect to the Premises or the Leasehold. In case
any such claim, action or proceeding (a "CLAIM") is brought against an
Indemnified Party in respect of which indemnification may be sought by such
Indemnified Party pursuant hereto, Agent shall give prompt written notice
thereof to Borrower, which notice shall include all documents and information in
the possession of or under the control of Agent and such Indemnified Party
relating to such Claim and shall specifically state that indemnification for
such Claim is being sought under this SECTION 5.5; PROVIDED, HOWEVER, that the
failure of Agent to so notify Borrower shall not limit or affect such
Indemnified Party's rights to be indemnified pursuant to this SECTION 5.5 except
to the extent Borrower is materially prejudiced by such failure. Upon receipt of
such notice of Claim (together with such documents and information from Agent
and such Indemnified Party), Borrower shall, at its sole cost and expense, in
good faith defend any


<PAGE>
                                       51


such Claim with counsel reasonably satisfactory to Agent (it being understood
that counsel selected by Borrower's insurance carrier shall be deemed to be
acceptable to Agent and the Indemnified Party, PROVIDED such insurer is an
insurer under an insurance policy provided by Borrower pursuant to the Loan
Documents or otherwise was accepted by Agent as an insurer (a "QUALIFIED
INSURER")), which counsel may, without limiting the rights of Agent and such
Indemnified Party pursuant to the next succeeding sentence of this SECTION 5.5,
also represent Borrower in such investigation, action or proceeding. In the
alternative, such Indemnified Party may elect to conduct its own defense through
counsel of its own choosing and at the reasonable expense of Borrower, if (A)
such Indemnified Party reasonably determines that the conduct of its defense by
Borrower could be materially prejudicial to its interests, (B) Borrower refuses
to defend, or (C) Borrower shall have failed, in such Indemnified Party's
reasonable judgment, to defend the Claim in good faith (unless, in the case of
each of clauses (A), (B) and (C), such Claim is being defended by a Qualified
Insurer). Borrower may settle any Claim against such Indemnified Party without
such Indemnified Party's consent, PROVIDED (i) such settlement is without any
liability, cost or expense whatsoever to such Indemnified Party, (ii) the
settlement does not include or require any admission of liability or culpability
by such Indemnified Party under any federal, state or local statute or
regulation, whether criminal or civil in nature and (iii) Borrower obtains an
effective written release of liability for such Indemnified Party from the party
to the Claim with whom such settlement is being made, which release must be
reasonably acceptable to such Indemnified Party, and a dismissal with prejudice
with respect to all claims made by the party against such Indemnified Party in
connection with such Claim. Agent and such Indemnified Party shall reasonably
cooperate with Borrower, at Borrower's sole cost and expense, in connection with
the defense or settlement of any Claim in accordance with the terms hereof. If
Borrower refuses to defend any Claim or fails to defend such Claim in good faith
(other than a Claim that is being defended by a Qualified Insurer) and such
Indemnified Party elects to defend such Claim by counsel of its own choosing,
Borrower shall be responsible for any good faith settlement of such Claim
entered into by such Indemnified Party. If such Indemnified Party reasonably
determines that the conduct of its defense by Borrower or a Qualified Insurer
(whichever is defending such claim) would be materially prejudicial to its
interests and elects to defend such Claim by counsel of its own choosing,
Borrower shall be responsible for any reasonable settlement of such Claim
entered into by such Indemnified Party. Except as provided in the preceding two
(2) sentences, no Indemnified Party may pay or settle any Claim and seek
reimbursement therefor under this SECTION 5.5. Nothing contained herein shall be
construed as requiring Agent or any Indemnified Party to expend funds or incur
costs to defend any Claim in connection with the matters for which Agent or any
Indemnified Party is entitled to indemnification pursuant to this SECTION 5.5.
The obligations of Borrower hereunder shall specifically include the obligation
to expend its own funds, to incur costs in its own name and to perform all
actions as may be necessary to protect Agent or any Indemnified Party from the
necessity of expending its own funds, incurring cost or performing any actions
in connection with the matters for which each Lender is entitled to
indemnification hereunder. Any obligation of the Borrower under clauses (f),
(g), (h) and (i) of this SECTION 5.5 shall terminate upon the earlier of (1) the
tenth (10th) anniversary of the


<PAGE>
                                       52


conveyance or assignment of the Premises and the Leasehold pursuant to a
judicial sale in any foreclosure action or by assignment in lieu of foreclosure
and (2) repayment in full of the outstanding principal balance and any other
indebtedness payable to Agent or Lenders under the Loan Documents.


                                    ARTICLE 6
                          LIMITED RECOURSE OBLIGATIONS

                  Section 6.1 LIMITED RECOURSE.

                  Subject to the qualifications below in this SECTION 6.1, the
obligations and liabilities of Borrower under the Note, this Agreement, the
Mortgage and the other Loan Documents shall be non-recourse. Accordingly,
subject to the qualifications below in this SECTION 6.1, Lenders shall not
enforce the liability and obligation of Borrower to perform and observe the
obligations contained in the Note, the Mortgage, this Loan Agreement or the
other Loan Documents by an action or proceeding wherein a money judgment shall
be sought against Borrower or any direct or indirect partner, member,
shareholder, principal, director, employee, officer or Affiliate of Borrower,
except that Agent may bring a foreclosure action, an action for specific
performance or any other appropriate action or proceeding to enable Lenders to
enforce and realize upon the Note, the Mortgage, this Loan Agreement, the other
Loan Documents, and the interests in the Premises and any other collateral given
to Lenders pursuant to the Mortgage, and the other Loan Documents; PROVIDED,
HOWEVER, that, except as specifically provided in this SECTION 6.1, any judgment
in any such action or proceeding shall be enforceable against Borrower only to
the extent of Borrower's interest in the Premises and in any other Collateral
given to Lenders. Agent, by accepting the Note, the Mortgage, this Loan
Agreement and the other Loan Documents, and Lenders, by becoming Lenders
hereunder, agree that they shall not sue for, seek or demand any deficiency
judgment against Borrower or any direct or indirect partner, member,
shareholder, principal, director, employee, officer or affiliate of Borrower, in
any such action or proceeding, under or by reason of or under or in connection
with the Mortgage, this Loan Agreement, the other Loan Documents or the Note.
The provisions of this SECTION 6.1 shall not, however: (i) constitute a waiver,
release or impairment of any obligation evidenced or secured by the Mortgage,
this Loan Agreement, the other Loan Documents or the Note; (ii) impair the right
of Agent to name Borrower as a party in any action or suit for foreclosure and
sale under the Mortgage; (iii) affect the validity or enforceability of any
guaranty made in connection with the Mortgage, this Loan Agreement, the Note or
the other Loan Documents; or (iv) impair the right of Agent to obtain the
appointment of a receiver. Nothing herein shall be deemed to be a waiver of any
right which Agent may have under Section 506(a), 506(b), 1111(b) or any other
provisions of the U.S. Bankruptcy Code to file a claim for the full amount of
the Loan secured by the Mortgage or to require that all collateral shall
continue to secure all of the debt owing to Lenders in accordance with the Note,
the Mortgage, this Loan Agreement and the other Loan Documents.


<PAGE>
                                       53


Notwithstanding the foregoing provisions of this SECTION 6.1 or any other
provision in the Loan Documents, Borrower and Prime, but not any other direct or
indirect partner, member, shareholder, principal, director, employee, officer or
affiliate of Borrower or Prime, shall be fully liable for:

                  (a) all actual, out-of-pocket losses suffered and liabilities
and expenses incurred by Lenders relating to fraud or intentional
misrepresentation by Borrower in connection with the loan evidenced by the Loan
Documents;

                  (b) the physical waste of the Premises or the Leasehold
Premises by Borrower, or any failure to maintain, repair or restore any part of
the Premises or the Leasehold Premises as may be required by the Mortgage, this
Loan Agreement or any of the other Loan Documents so as to constitute physical
waste;

                  (c) the breach of provisions in the Mortgage concerning
Environmental Laws, Hazardous Substances and Asbestos and any indemnification of
Lenders therein;

                  (d) the removal or disposal of any portion of the Premises or
the Leasehold Premises in violation of the terms of the Loan Documents after the
occurrence and during the continuance of an Event of Default under the Note, the
Mortgage, this Loan Agreement or any other Loan Documents;

                  (e) the misapplication or conversion of Borrower of (i) any
insurance proceeds paid by reason of any loss, damage or destruction to the
Premises or the Leasehold Premises, (ii) any awards or other amounts received in
connection with the condemnation of all or a portion of the Premises or the
Leasehold Premises, or (iii) rents, issues, profits, proceeds, accounts, or
other amounts received by Borrower after the occurrence and during the
continuance of an Event of Default under the Note, the Mortgage, this Loan
Agreement or the other Loan Documents, except when applied with the written
consent of Agent or to pay Operating Expenses incurred or paid to Agent or
Lenders as Debt Service or otherwise;

                  (f) the costs (including reasonable attorneys' fees and
disbursements) incurred by Lenders in connection with the collection or
enforcement of the Loan;

                  (g) failure to pay Taxes, assessments, charges for labor or
materials or other charges that create liens on any portion of the Premises or
the Leasehold for which Borrower is assessed unless contested in good faith,
such contest being pursued with due diligence and continually;

                  (h) any actual, out-of-pocket loss, damage, expense or
liability incurred by Lenders arising out of Borrower's failure to obtain
Agent's prior written consent to any sale,


<PAGE>
                                       54


conveyance, alienation, mortgage, encumbrance, pledge or other transfer of the
Premises or the Leasehold any part thereof;

                  (i) any security deposits collected with respect to the
Premises that are not delivered to Agent upon a foreclosure of the Premises or
action in lieu thereof, except to the extent previously applied in accordance
with the respective Leases (as defined in the Mortgage);

                  (j) all of the terms and provisions of the Environmental
Indemnity Agreement and any indemnification of Lenders set forth therein;

                  (k) the voluntary filing of bankruptcy, reorganization or
insolvency proceedings by Borrower, or if an Affiliate of Borrower causes
Borrower to have to file bankruptcy, reorganization or insolvency proceedings;

                  (l) the indemnification of Agent and each Lender, and each of
its affiliates, officers, directors, partners, participants, employees and
agents from and against any and all actual, out-of-pocket losses, claims,
damages, costs, expenses, liabilities, fines, penalties and charges which are or
may be imposed upon the Improvements or which are or may be imposed upon or
suffered or incurred by any such indemnified party by reason of the lack of a
certificate of occupancy for the Improvements, including, without limitation,
costs and expenses incurred to obtain a certificate of occupancy if and to the
extent one is required pursuant to applicable Laws and is requested by
applicable Governmental Authorities; and

                  (m) to the extent required by any Governmental Authorities or
by the terms of any Lease, whether existing as of the date hereof or entered
into subsequent to the date hereof, Borrower or Prime shall remove or otherwise
remediate the Asbestos at the Premises, as so required (collectively, the
"Remediation Work"), and Borrower and Prime shall be fully liable for such
removal or other remediation, as applicable. Within ten (10) Business Days of
Borrower and/or Prime becoming aware of such requirement to remove or otherwise
remediate Asbestos at the Premises (or if Agent becomes aware of any such
requirement then within ten (10) Business Days of receiving written notice from
Agent regarding such removal and/or remediation, whichever is earlier), Borrower
and Prime shall cause to be delivered to Agent a letter of credit for the
benefit of Agent to be drawn on a bank reasonably acceptable to Agent (the
"LETTER OF CREDIT") in an amount equal to the product of (i) twenty dollars
($20.00) and (ii) the number of square feet at the Premises affected by such
requirement to remove and/or remediate (the "REMEDIATION AMOUNT"). After
Borrower has completed and paid for the Remediation Work, or any portion
thereof, and evidence satisfactory to Agent has been provided to Agent by
Borrower of such completion and payment, the amount of the Letter of Credit
shall be reduced by the amount paid by Borrower for such Remediation Work, or
portion thereof, as applicable. The Letter of Credit shall expire upon
completion of the Remediation Work (a) to the satisfaction of the Governmental
Authority, or (b) to the extent required under the applicable Lease, as

<PAGE>
                                       55


applicable. The Letter of Credit shall be additional Collateral for the Loan.
Agent shall be entitled to draw on the Letter of Credit if either of the
following should occur: (i) the occurrence of an Event of Default under the Loan
Documents, or (ii) such Letter of Credit is due to expire in less than fifteen
(15) days and has not been renewed and the Remediation Work has not been
completed as required by (a) or (b) above, as applicable. In the case of
subsection (ii) immediately above, Agent shall hold any amounts drawn on the
Letter of Credit as cash collateral as security for the purpose of paying for
the Remediation Work, and, in the case of subsection (i) immediately above,
Agent may hold any amounts drawn on the Letter of Credit as cash collateral as
security for the purpose of paying for the Remediation Work or apply the amount
against any amounts due under the Loan. Within ten (10) Business Days of January
1 and July 1 of each year throughout the Term of the Loan, Borrower and/or Prime
shall deliver to Agent evidence satisfactory to Agent that Borrower and/or Prime
(individually or in the aggregate) has a line of credit, borrowing capacity,
cash or cash equivalents available to it which evidence Borrower's ability to
procure a letter of credit in an amount of at least ten million ($10,000,000)
dollars. In lieu of providing Agent with a Letter of Credit, Borrower may
substitute cash therefor in an amount equal to the Remediation Amount.


                                    ARTICLE 7
                                    THE AGENT

                  Section 7.1 PERFORMANCE BY AGENT.

                  If an Event of Default shall have occurred and be continuing,
Agent shall have the right, but not the duty, without limitation upon any of
Agent's rights pursuant hereto, to perform in good faith the obligations of
Borrower which are the subject of the Event of Default, in which event Agent
shall endeavor to give notice to Borrower of Agent's performance, and Borrower
agrees to pay to Agent, within five (5) days of demand therefor, all actual and
reasonable costs and expenses incurred by Agent in connection therewith,
including without limitation reasonable attorneys' fees, together with interest
from the date of expenditure at the Default Rate, if an Event of Default shall
have given rise to such expenditure; PROVIDED, HOWEVER that Borrower shall not
be obligated to reimburse Agent for costs and expenses incurred by Agent
pursuant to this SECTION 7.1 due to Agent's gross negligence or willful
misconduct. Upon demand by Agent, each of the Lenders shall promptly advance to
Agent in immediately available funds its ratable portion of the funds expended
by Agent in curing such Event of Default together with interest thereon at the
Default Rate from the date of Agent's payment through the date prior to the date
on which such advance is received by Agent. Agent will disburse to each Lender
such Lenders' ratable share of any fees or charges paid or advanced to Agent by
Borrower (i) pursuant to SECTIONS 2.7, 2.8, and 8.12 hereof and/or (ii) pursuant
to Section 11(c) of the Mortgage.


<PAGE>
                                       56


                  Section 7.2 ACTIONS.

                  If Agent shall have reasonable cause to believe that any
action or proceeding related to the Premises or the Leasehold may, if adversely
determined, have a material adverse effect upon the rights or interests of Agent
and/or Lenders under this Agreement or any of the other Loan Documents, Agent,
after any applicable notice to Borrower shall have the right to commence, appear
in and defend such action or proceeding, and in connection therewith Agent may
pay necessary expenses, employ counsel, and pay reasonable attorneys' fees.
Borrower agrees to pay to Agent, within five (5) days after demand therefor by
Agent, all actual and reasonable costs and expenses incurred by Agent in
connection therewith, including without limitation reasonable attorneys' fees,
together with interest from the date of expenditure at the Default Rate, if an
Event of Default shall have given rise to such action or proceeding. Borrower's
obligations to repay such expenses shall be secured by the Loan Documents.

                  Section 7.3 NONLIABILITY OF AGENT AND LENDERS.

                  Borrower acknowledges and agrees that:

                  (a) by accepting or approving anything required to be
observed, performed, fulfilled or given to Agent or Lenders pursuant to the Loan
Documents, including any certificate, statement of profit and loss or other
financial statement, survey, appraisal, lease or insurance policy, neither Agent
nor Lenders shall be deemed to have warranted or represented the sufficiency,
legality, effectiveness or legal effect of the same, or of any term, provision
or condition thereof, and such acceptance or approval thereof shall not
constitute a warranty or representation to anyone with respect thereto by Agent;

                  (b) neither Agent nor Lenders undertake nor assume any
responsibility or duty to Borrower to select, review, inspect, supervise, pass
judgment upon or inform Borrower of any matter in connection with the Premises
or the Leasehold and Borrower shall rely entirely upon its own judgment with
respect to such matters, and any review, inspection, supervision, exercise of
judgment or supply of information to Borrower by Agent or Lenders in connection
with such matters is for the protection of Agent and/or Lenders only and neither
Borrower nor any third party is entitled to rely thereon; and

                  (c) except to the extent caused by a Lender's gross negligence
or willful misconduct, neither Agent nor any Lender shall be directly or
indirectly liable or responsible for any loss, claim, cause of action,
liability, indebtedness, damage or injury of any kind or character to any person
or property arising from any construction on, or occupancy or use of, any of the
Premises or the Leasehold Premises, including without limitation any loss,
claim, cause of action, liability, indebtedness, damage or injury caused by, or
arising from: (i) any defect in any building, structure, grading, fill,
landscaping or other improvements thereon or in any on-site or


<PAGE>
                                       57


off-site improvement or other facility therein or thereon; (ii) any act or
omission of Borrower, the parties comprising Borrower or any of Borrower's
agents, employees, independent contractors, licensees or invitees; (iii) any
accident in or on the Premises or the Leasehold Premises or any fire, flood or
other casualty or hazard thereon; (iv) the failure of Borrower, any of
Borrower's licensees, employees, invitees, agents, independent contractors or
other representatives to maintain the Premises and the Leasehold Premises in a
safe condition; and (v) any nuisance made or suffered on any part of the
Premises or the Leasehold Premises.

                  Section 7.4 AUTHORIZATION AND ACTION.

                  (a) Each Lender hereby appoints and authorizes Agent to take
such action as agent on its behalf and to exercise such powers under the Loan
Documents as are delegated to Agent by the terms hereof and thereof, together
with such powers as are reasonably incidental thereto, including but not limited
to (i) all actions set forth in Section 59 of the Mortgage or any similar
provision of any other Loan Document and (ii) except if an Event of Default has
occurred or is continuing hereunder, any and all actions related to the Cash
Collateral Account (Central Account), Cash Collateral Account (Ratio Reserve),
if any, Cash Collateral Account , if any, and any other cash collateral accounts
required to be made hereunder, including but not limited to, the release of
monies or other collateral deposited or delivered to Agent pursuant thereto. As
to any matters not expressly provided for by the Loan Documents (including,
without limitation, enforcement or collection of the Note), Agent shall not be
required to exercise any discretion or take any action, but shall be required to
act or to refrain from acting (and shall be fully protected in so acting or
refraining from acting) upon the instructions of the Majority Lenders, and such
instructions shall be binding upon all Lenders; PROVIDED, HOWEVER, that Agent
shall not be required to take any action which exposes Agent to personal
liability or which is contrary to this Agreement or applicable law. Agent agrees
to give to each Lender prompt notice of each notice given to it by Borrower
pursuant to the terms of the Loan Documents.

                  (b) By their execution of this Agreement, all of the Lenders
hereby delegate, authorize and direct Agent to act on their behalf in all
respects in connection with the Loan Documents and the making of the Loan and
agree with Borrower that Borrower shall only be required to deal with Agent and
each of the Lenders shall be bound by any acts of Agent.

                  (c) Except as otherwise expressly provided in this Agreement,
Agent (i) shall take all such actions hereunder and under the other Loan
Documents which are not inconsistent with the terms hereof or thereof as the
Majority Lenders shall instruct and (ii) shall not take any material actions
hereunder or under the Loan Documents contrary to the instructions of the
Majority Lenders. Any provision of this Agreement which grants to Agent the
right to make a decision at its sole discretion or in its reasonable judgment or
at its option or any other similar provision is intended, unless the context
shall clearly require otherwise, to apply only to relations between Borrower and
Agent and the respective rights and obligations of Borrower and Agent


<PAGE>
                                       58


hereunder and shall not apply to the relations between Agent and the Lenders or
the respective rights and obligations of Agent and the Lenders hereunder.

                  (d) Promptly after Agent acquires actual knowledge thereof,
Agent will give written notice to each Lender of any lien on the Premises or the
Leasehold or default under this Agreement or any of the other Loan Documents.
Agent agrees to consult with Lenders in respect of any remedial action to be
taken in respect of any such default and shall act in accordance with any
decision of the Majority Lenders. Agent agrees that during a period of
forty-five (45) days from Agent's notice to Lenders of any such default, Agent
will not take any such material remedial action without the prior agreement of
the Majority Lenders unless in Agent's good faith judgment it is necessary to
take more prompt remedial action within such period, with or without the
agreement of the Majority Lenders, in order to preserve any collateral for the
payment of the Loan or substantive rights or remedies under any of the Loan
Documents. Agent shall advise Lenders from time to time of such remedial action
as Agent shall have taken. All losses and expenses incurred by Agent in
connection with the Loan, the enforcement thereof or the realization of the
security therefor shall be borne by the Lenders in accordance with their ratable
interest in the Loan, and Lenders will, upon request, reimburse Agent for their
ratable shares of any expenses incurred by Agent in connection with any such
default, any advances made to pay taxes or insurance or otherwise to preserve
the lien of the Mortgage or to preserve and protect the Premises or the
Leasehold (PROVIDED, HOWEVER, that Agent shall not advance sums in excess of the
principal amount of the Mortgage), any other expenses incurred in connection
with the enforcement of the Mortgage and any expenses incurred by Agent in
connection with the consummation of the Loan not paid or provided for by
Borrower.

                  (e) Agent shall, in making any Major Decision, act upon the
direction of the Majority Lenders; PROVIDED, HOWEVER, that without the consent
of all of the Lenders, Agent shall not, except as expressly provided for in
SECTION 7.4(A), SECTION 7.4(C) or SECTION 7.4(D) hereof, make or consent to any
modification of the Loan or the Loan Documents, release any security for the
Loan, or release any Person from liability in connection with the Loan under any
guaranty or otherwise. As used herein, "MAJOR DECISION" means any decision to
exercise any material rights or remedies under the Loan Documents. The
provisions of this subsection are solely for the benefit of the Lenders and
Agent and shall not create any rights in Borrower.

                  (f) If Agent shall be prohibited by Law from continuing to act
as agent with respect to the Loan, then, subject to Borrower's approval (which
approval shall not be unreasonably withheld, conditioned or delayed), the
Majority Lenders shall (and at any time may) designate another Lender to perform
the obligations and exercise the rights of Agent hereunder. The successor Agent
shall assume such obligations in writing and from and after Borrower's receipt
of a copy of notice of such replacement and receipt of a copy of such assumption
the successor Agent shall be the sole Agent hereunder and the term "Agent" shall
thereafter refer to such successor.


<PAGE>
                                       59


                  Section 7.5       WITHHOLDING EXEMPTION CERTIFICATES.

                  Concurrently with the disbursement of proceeds of the Loan and
concurrently with (and as a condition precedent to) the sale of any
participation interest in the Loan or assignment of all or any portion of the
Loan, Agent shall deliver to Borrower via facsimile two completed copies of
United States Internal Revenue Service Form 1001 or Form 4224, as applicable, or
the successor applicable form, with respect to each Lender (or, in the case of
any sale of a participation interest or assignment of all or any portion of the
Loan, the applicable purchaser or assignee) certifying that such Lender (or, if
applicable, purchaser or assignee) is entitled to receive payments under the
Loan without deduction or withholding of any United States federal income taxes.
Each Lender shall further deliver to Borrower two (2) copies of such Form 1001
or Form 4224, as applicable, or the successor applicable form, at least thirty
(30) days before the date that any such form expires or becomes obsolete or
immediately after the occurrence of any event requiring a change in the most
recent form previously delivered by it to Borrower, in each case certifying that
such Lender is entitled to receive payments under the Loan without deduction or
withholding of any United States federal income taxes.

                  Section 7.6       AGENT'S RELIANCE, ETC.

                  Agent shall administer this Agreement and the other Loan
Documents and service the Loan in accordance with the terms and conditions of
this Agreement and with the same degree of care as Agent would use in servicing
a loan of similar size and type held for its own account, PROVIDED, HOWEVER,
that none of its directors, officers, agents or employees shall be liable for
any action taken or omitted to be taken by it or them under or in connection
with this Agreement, except for its or their own gross negligence or willful
misconduct. Without limiting the generality of the foregoing, Agent: (i) may
consult with legal counsel (including counsel for Borrower), independent public
accountants and other experts selected and shall not be liable for any action
taken or omitted to be taken in good faith by it in accordance with the advice
of such counsel, accountants or experts; (ii) makes no warranty or
representation to any Lender and shall not be responsible to any Lender for any
statements, warranties or representations (whether written or oral) made in or
in connection with this Agreement; (iii) shall not have any duty to ascertain or
to inquire as to the performance or observance of any of the terms, covenants or
conditions of this Agreement on the part of Borrower or to inspect either the
Premises, the Leasehold or the books and records of Borrower; (iv) shall not be
responsible to any Lender for the due execution, legality, validity,
enforceability, genuineness, sufficiency or value of this Agreement or any other
instrument or document furnished pursuant hereto; and (v) shall incur no
liability under or in respect of this Agreement by acting upon any notice,
consent, certificate or other instrument or writing (which may be by telecopier,
telegram, cable or telex) believed by it to be genuine and signed or sent by the
proper party or parties.


<PAGE>
                                       60


                  (a) Subject to SECTION 7.7(B) hereof, payments actually
received by Agent for the account of the Lenders shall be paid to them promptly
after receipt thereof by Agent, but in any event within one (1) Business Day,
PROVIDED that, if any such payments are not distributed to the Lenders within
one Business Day after Agent's receipt thereof, Agent shall pay to such Lenders
interest thereon, at the lesser of (a) the overnight cost of funds at which
federal funds are made available to Agent (such interest rate to change
automatically effective as of the date of each change in the overnight cost of
federal funds) and (b) if the applicable payment represents repayment of a
portion of the principal of the Loan, the rate of interest applicable to such
portion of the Loan, from the date of receipt of such funds by Agent until such
funds are paid in immediately available funds to such Lenders provided such
funds are received by Agent not later than [11:00 A.M. (New York time)] on the
date of receipt. All payments of principal and interest in respect of the Loan,
all payments of the fees described in this Agreement and all payments in respect
of any other obligations of Borrower under the Loan Documents shall be allocated
among such of Lenders as are entitled thereto, in proportion of their respective
Percentages or otherwise as provided herein, in the other Loan Documents, or in
the Syndication Agreement as the case may be. Borrower shall have no liability
to any Lender on account of a failure by Agent to timely or correctly allocate
among the Lenders any payments in respect of any obligations of Borrower. Agent
shall wire transfer immediately available funds to each Lender in accordance
with wiring instructions provided by Lender to Agent, such funds as it may be
entitled to receive, PROVIDED that Agent shall in any event not be bound to
inquire into or determine the validity, scope or priority of any interest or
entitlement of any Lender and may suspend all payments and seek appropriate
relief (including without limitation instructions from the Lenders, or an action
in the nature of interpleader) in the event of any doubt or dispute as to any
apportionment or distribution contemplated hereby.

                  (b) If a Lender (a "DEFAULTING LENDER") defaults in making any
advance or paying any other sum payable by it hereunder, such sum together with
interest thereon at the Default Rate from the date such amount was due until
repaid (such sum and interest thereon as aforesaid referred to, collectively, as
the "LENDER DEFAULT OBLIGATION" shall be payable by the Defaulting Lender (a) to
any Lender(s) which elect, at their sole option (and with no obligation to do
so), to fund the amount which the Defaulting Lender failed to fund or (b) to any
Agent or any other Lender, which under the terms of this Agreement is entitled
to reimbursement from the Defaulting Lender for the amounts advanced or
expended. Notwithstanding any provision hereof to the contrary, until such time
as a Defaulting Lender has repaid the Lender Default Obligation in full, all
amounts which would otherwise be distributed to the Defaulting Lender shall
instead be applied first to repay the Lender Default Obligation (to be applied
first to interest at the Default Rate and then to principal) until the Lender
Default Obligation has been repaid in full (whether by such application or by
cure by the Defaulting Lender), whereupon such Lender shall no longer be a
Defaulting Lender. Any interest collected from Borrower on account of principal
advanced by any Lender(s) on behalf of a Defaulting Lender shall be paid to the
Lender(s) who made such advance and shall be credited against the Defaulting
Lender's obligation to pay interest on the


<PAGE>
                                       61


amount advanced at the Default Rate. The provisions of this section shall apply
and be effective regardless of whether an Event of Default occurs and is then
continuing, and notwithstanding (i) any other provision of this Agreement to the
contrary, (ii) any instructions of Borrower as to its desired application of
payments or (iii) the suspension of such Defaulting Lender's right to vote on
matters which are subject to the consent or approval of Majority Lenders, or all
Lenders. Agent shall be entitled to (A) withhold or set off, and to apply to the
payment of the Lender Default Obligation any amounts to be paid to such
Defaulting Lender in a court of competent jurisdiction to recover the Lender
Default Obligation and, to the extent such recovery would not fully compensate
the Lenders for the Defaulting Lender's breach of this Agreement, to collect
damages. In addition, the Defaulting Lender shall indemnify, defend and hold
Agent and each of the other Lenders harmless from and against any and all
claims, actions, liabilities, damages, costs and expenses (including attorneys'
fees and expense), plus interest thereon at the Default Rate, for funds advanced
by Agent or any other Lender on account of the Defaulting Lender or any other
damages such entities may sustain or incur by reason of or as a direct
consequence of the Defaulting Lender's failure or refusal to abide by its
obligations under this Agreement.

                  Section 7.8 RATABLE SHARING.

                  Subject to SECTION 7.7, Lenders agree among themselves that
(a) with respect to all amounts received by them which applicable to the payment
of the Loan, equitable adjustment will be made so that, in effect, all such
amounts will be shared among them ratably in accordance with their Percentages,
whether received by voluntary payment, by the exercise of the right of set-off
or banker's lien, by counterclaim or cross action or by the enforcement of any
or all of the Loan Documents or any collateral and (b) if any of them shall by
voluntary payment or by the exercise of any right of counterclaim, set-off,
banker's lien or otherwise, receive payment of a proportion of the aggregate
amount of the Loan held by it which is greater than its Percentage of the
payments on the account of the Loan, the one receiving such excess payment shall
purchase, without recourse or warranty, an undivided interest and participation
(which it shall be deemed to have done simultaneously upon the receipt of such
payment) in such obligations owed to the others so that all such recoveries with
respect to such obligations shall be applied ratably in accordance with their
Percentages; provided, that if all or part of such excess payment received by
the purchasing party is thereafter recovered from it, those purchases shall be
rescinded and the purchase prices paid for such participations shall be returned
to that party to the extent necessary to adjust for such recovery, but without
interest except to the extent the purchasing party is required to pay interest
in connection with such recovery. Borrower agrees that any Lender so purchasing
a participation from another Lender pursuant to this Section may, to the fullest
extent permitted by law, subject to the terms of the Loan Documents, exercise
all its rights of payment (including the right of set-off) with respect to such
participation as fully as if such Lender were the direct creditor of Borrower in
the amount of such participation.



<PAGE>
                                       62


                                    ARTICLE 8
                                  MISCELLANEOUS

                  Section 8.1 FEES AND EXPENSES

                  Borrower agrees to pay all actual, out-of-pocket expenses of
Agent (including the reasonable fees and expenses of its counsel) in connection
with the Loan, the preparation of this Agreement and any amendments or
supplements, the enforcement of any provision of this Agreement or any amendment
or supplement and the collection of Note and/or the foreclosure of any Lien,
and/or Mortgage, and/or the enforcement of this Agreement through all trial and
appellate levels, whether such fees or expenses arise before proceedings are
commenced or after entry of a final judgment; PROVIDED, HOWEVER, that Borrower
shall not be required to pay more than $10,000 (in total) for Agent's travel and
out-of-pocket expenses incurred in the preparation of the Loan Documents and the
closing of the contemplated transaction. Borrower hereby authorizes Agent to
utilize the proceeds of the Loan to satisfy any and all of the costs and
expenses referred to herein and no further direction or authorization from
Borrower shall be necessary to warrant disbursements in payment of the
foregoing, and all such disbursements shall earn interest as provided in the
Note and shall be secured by the Mortgage.

                  Section 8.2 CUMULATIVE RIGHTS AND NO WAIVER.

                  Each and every right granted to Agent hereunder or under any
other Loan Documents delivered hereunder or in connection herewith, or allowed
by law or equity, including but not limited to these rights exercisable in
connection with an Event of Default, shall be cumulative and may be exercised
from time to time. No failure on the part of Agent to exercise, and no delay in
exercising, any right will operate as a waiver thereof, nor will any single or
partial exercise by Agent of any right preclude any other or future exercise
thereof or the exercise of any other right.

                  Section 8.3 NOTICES.

                  Unless expressly contained herein, all notices given hereunder
shall be given in accordance with the terms of the Mortgage.

                  Section 8.4 SEVERABILITY.

                  In case any one or more of the provisions contained in this
Agreement shall be invalid, illegal or unenforceable in any respect under any
law, the validity, legality and enforceability of the remaining provisions
contained herein shall not in any way be affected or impaired thereby.


<PAGE>
                                       63


                  Section 8.5 BINDING EFFECT.

                  This Agreement shall be binding upon and shall inure to the
benefit of the respective permitted successors and assigns of Borrower, Agent
and Lenders; PROVIDED, HOWEVER, that Borrower may not assign any of its rights
hereunder, except as permitted in this Agreement or in the Loan Documents.

                  Section 8.6 EXECUTION IN COUNTERPARTS.

                  This Agreement may be executed in any number of counterparts
and by the different parties hereto on separate counterparts, each of which when
so executed and delivered shall be an original, but all the counterparts shall
together constitute one and the same instrument.

                  Section 8.7 TIME OF THE ESSENCE.

                  Time is of the essence in matters pertaining to this
Agreement.

                  Section 8.8 IMMUNITY.

                  Agent's commitment to make this Loan hereunder shall not at
any time be subject or liable to attachment or levy at the suit of any creditor
of Borrower or any agent, contractor, subcontractor or supplier of Borrower. All
third parties' rights shall be and are subordinate and inferior to Lenders'
interest and lien under the terms of the Mortgage and this Agreement. Agent and
Lenders shall not be liable to third parties for services, labor, materials,
Fixtures, equipment and other personal property employed upon, furnished or
delivered to the Premises or the Leasehold Premises, and further as to such
third parties, Agent shall be under no obligation to adhere to the requirements
herein imposed as conditions for the advance of Loan funds which requirements
are expressly intended to be for the sole and exclusive benefit of Agent.

                  Section 8.9 GOVERNMENTAL REGULATION OF LENDER.

                  Lenders are subject to various Governmental Authorities and
the laws, rules and regulations enacted, adopted and promulgated by them. To the
extent that Lenders' power and authority to perform the obligations on the part
of Lenders to be performed under this Agreement, now or hereafter, may be
limited or regulated hereby, Lenders are hereby excused from such performance.

                  Section 8.10 MODIFICATION, WAIVER, CONSENT.

                  Any modification or waiver or any provision of this Agreement
or any consent to any departure by Borrower therefrom shall not be effective
unless the same is in writing and


<PAGE>
                                       64


signed by an authorized officer of Agent and Borrower, and then such
modification, waiver or consent shall be effective only in the specific instance
and for the specific purpose given. Any notice to or demand on Borrower not
specifically required of Agent hereunder shall not entitle Borrower to any other
or further notice or demand in the same, similar, or other circumstances unless
specifically required hereunder.

                  Section 8.11 ENTIRE AGREEMENT.

                  The Loan Documents contain the entire agreement between the
parties hereto and there are no promises, agreements, conditions, undertakings,
warranties and representations, whether written or oral, express or implied,
between the parties hereto other than as set forth in the Loan Documents.

                  Moreover, in the event of a conflict between the terms of
another Loan Document and this Agreement, the terms of the document which shall
either enlarge the interest of Lenders in the Premises and the Leasehold, grant
to Lenders greater financial security in the Premises and the Leasehold and/or
assure repayment by Borrower of all sums due hereunder in full shall control.

                  Section 8.12 ASSIGNMENT.

                  (a) Borrower may not assign this Agreement or any of its
rights or obligations hereunder without the prior approval of Agent except as
provided in this Agreement or in the other Loan Documents.

                  (b) Borrower and each Lender acknowledges and agrees that
Agent may, and shall have the right without Borrower's or any Lender's consent
to, sell participation interests in, or to assign, its interest in the Loan, or
any portion thereof, subject to SECTION 7.5 hereof, to any Institution and upon
any assignment by Agent, Agent shall be relieved of any liability hereunder and
under any Loan Document arising or accruing from and after the date of such
assignment to the extent of the amount so assigned; PROVIDED, however, Agent
shall give ten (10) days prior notice of such assignment to Borrower (together
with a completed copy of Form 1001 or Form 4224, as applicable, with respect to
the proposed assignee). Borrower and Agent acknowledge that any Lender (other
than Agent) may, and shall have the right, subject to providing Agent and
Borrower with ten (10) days' prior written notice (together with a completed
copy of Form 1001 or Form 4224, as applicable, with respect to the proposed
assignee) to assign its entire interest or any portion thereof to any
Institution, and upon any assignment by such Lender, such Lender shall be
relieved of any liability hereunder or under any other Loan Document arising or
accruing from and after the date of such assignment; PROVIDED, FURTHER, that no
such sale or assignment shall result in a material increase in Borrower's
obligations, costs or liabilities hereunder or a material reduction in
Borrower's rights and remedies. The parties to each such assignment shall
execute


<PAGE>
                                       65


and deliver to Agent, for its acceptance and recording in the Agent's Register,
Agent's form of assignment and acceptance agreement, together with a processing
and recordation fee of $2,500, which fee shall cover Agent's cost in connection
with the assignments under this Agreement. If an Event of Default has occurred
and is continuing, Borrower's consent to any assignment or participation to any
party whatsoever shall not be required and all parties hereto agree to promptly
execute and file an amendment to this Agreement reflecting any such assignment.
Borrower agrees to execute within ten (10) days after request therefor is made
by Agent, any documents and/or estoppel certificates reasonably requested by
Agent in connection with such participation or assignment, without charge;
provided that such documents and/or estoppel certificates do not expand the
liability or obligations of Borrower or reduce assignee's or participant's
obligations or reduce Borrower's rights and remedies. Upon such execution,
delivery, acceptance and recording, from and after the effective date specified
in such Assignment and Acceptance, (x) the assignee thereunder shall be a party
thereto and, to the extent that rights and obligations hereunder have been
assigned to it pursuant to such Assignment and Acceptance, have the rights and
obligations of a Lender hereunder and (y) the Lender assignor thereunder shall,
to the extent that rights and obligations hereunder have been assigned by it
pursuant to such Assignment and Acceptance, relinquish its rights and be
released from its obligations under this Agreement, and such Lender assignor
shall cease to be a party hereto. The Agent shall maintain a register (the
"AGENT'S REGISTER") showing the identity of the Lenders from time to time.

                  Section 8.13 APPLICABLE LAW.

                  This Agreement shall be governed by and construed in
accordance with the laws of the State of New York.

                  Section 8.14 USURY.

                  Nothing herein, nor any transaction related hereto or thereto,
shall be construed or so operate as to require Borrower to pay interest at a
greater rate than is lawful under applicable law. Should any interest or other
charges paid by Borrower in connection with all advances made to Borrower under
this Agreement result in the computation or earning of interest in excess of the
maximum lawful rate of interest which is legally permitted under applicable law,
then any and all such excess shall be, and the same is hereby, waived by Agent,
and any and all such excess shall be, at Agent's option, be returned to Borrower
or credited against and in reduction of the balance due under the indebtedness,
and the portion of such excess which exceed the balance due under this Agreement
and the Note evidencing the indebtedness, shall be returned by Agent to
Borrower.

                  Section 8.15 CONSENT TO JURISDICTION.

                  Borrower, Agent and Lenders each hereby irrevocably submit to
the exclusive jurisdiction and venue of any state or federal court sitting in
Chicago, Illinois for the purpose of


<PAGE>
                                       66


any suit, action, proceeding or judgment relating to or arising out of this
Agreement or the Note or the Mortgage and/or the Loan Document.

                  Section 8.16 MONIES.

                  All references to monies in this Agreement shall be deemed to
mean lawful monies of the United States of America.

                  Section 8.17 JURY TRIAL.

                  AGENT, LENDERS AND BORROWER HEREBY KNOWINGLY AND INTENTIONALLY
WAIVE THE RIGHT EITHER MAY HAVE TO A TRIAL BY JURY IN RESPECT TO ANY LITIGATION
BASED HEREON, OR ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT, AND
ANY AGREEMENT CONTEMPLATED TO BE EXECUTED IN CONNECTION HEREWITH, OR ANY COURSE
OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER VERBAL OR WRITTEN) OR ACTIONS
OF EITHER PARTY. THIS PROVISION IS A MATERIAL INDUCEMENT FOR LENDERS EXTENDING
CREDIT TO BORROWER. FURTHER, BORROWER, HEREBY CERTIFIES THAT NO REPRESENTATIVE
OR AGENT OF AGENT, NOR AGENT'S COUNSEL, HAS REPRESENTED, EXPRESSLY OR OTHERWISE,
THAT AGENT WOULD NOT, IN THE EVENT OF SUCH LITIGATION, SEEK TO ENFORCE THIS
WAIVER OF RIGHT TO JURY TRIAL PROVISION.

                            [SIGNATURES ON NEXT PAGE]


<PAGE>


                  IN WITNESS WHEREOF, this Agreement was executed and delivered
the day and year first above written.



                                    BORROWER:

                                    330 N. WABASH AVENUE, L.L.C

                                    By:  77 West Wacker Limited Partnership,
                                         its sole member

                                         By:  Prime Group Realty, L.P.,
                                              its general partner

                                              By:   Prime Group  Realty  Trust,
                                                    its managing general partner


                                              By: /s/  Jeffrey A. Patterson
                                                 ------------------------------
                                                 Name: Jeffrey A. Patterson
                                                 Title: Executive Vice President


                                    For purposes Section 6.1 hereof only:

                                    PRIME GROUP REALTY, L.P.

                                    By:  Prime Group Realty Trust, its
                                         Managing General Partner


                                    By: /s/  Jeffrey A. Patterson
                                        ---------------------------------
                                         Name: Jeffrey A. Patterson
                                         Title:   Executive Vice President


                       [SIGNATURES CONTINUED ON NEXT PAGE]


<PAGE>


                                    AGENT AND LENDER:

                                    WESTDEUTSCHE IMMOBILIENBANK


MAXIMUM US $60,000,000              By: /s/  Claus J. Cohausz
                                       --------------------------
                                        Name: Claus J. Cohausz
                                        Title: Senior Vice President


                                    By: /s/  Armin Gemmerich
                                       --------------------------
                                        Name: Armin Gemmerich
                                        Title: Vice President


<PAGE>


                                    LENDER:

                                    MERRILL LYNCH MORTGAGE CAPITAL, INC.

US$100,000,000                      By: /s/ Steven Glassman
                                       --------------------------
                                        Name: Steven Glassman
                                        Title: Vice President



<PAGE>


                                    EXHIBIT A

                               DESCRIPTION OF LAND


                             [INTENTIONALLY DELETED]

<PAGE>


                                    EXHIBIT B

                                     LEASES



                             [INTENTIONALLY DELETED]

<PAGE>


                                    EXHIBIT C

                          PRINCIPAL REPAYMENT SCHEDULE

<TABLE>
<S>                                         <C>                     <C>
                                            December 13, 2000       $1,600,000
                                            December 13, 2001       $3,200,000
                                            December 13, 2002       $3,200,000

In respect of the First Extension
Period, if applicable                       December 13, 2003       $4,800,000
In respect of the Second
Extension Period, if applicable             December 13, 2004       $4,800,000
</TABLE>



<PAGE>


                                    EXHIBIT D



                             [INTENTIONALLY DELETED]



<PAGE>

                                                                    Exhibit 10.2

                                                               CHICAGO, ILLINOIS

$160,000,000.00   DATED: AS OF DECEMBER 13, 1999

                  FOR VALUE RECEIVED, 330 N. WABASH AVENUE, L.L.C., a Delaware
limited liability company, having its principal place of business at c/o Prime
Group Realty Trust, 77 West Wacker Drive, Suite 3900, Chicago, Illinois 60601
("BORROWER"), promises to pay to the order of WESTDEUTSCHE IMMOBILIENBANK, a
banking institution organized under the laws of the Federal Republic of Germany,
at its principal place of business at Wilhelm Theodor Romheld Strasse 24, 55130
Mainz, Federal Republic of Germany, or at such place as the holder hereof may
from time to time designate in writing, individually and as agent (including any
successors and assigns, "AGENT") for Merrill Lynch Mortgage Capital Inc., a
Delaware corporation, having an address at World Financial Center, North Tower,
10th Floor, 250 Vesey Street, New York, New York 10281, and such other
co-lenders as may exist from time to time (collectively with Agent, "LENDERS"
and each individually "LENDER"), the principal sum of ONE HUNDRED SIXTY MILLION
DOLLARS (US$160,000,000.00), in lawful money of the United States of America,
with interest thereon to be computed from the date funds are advanced by Agent
on the outstanding principal balance of the Loan from time to time at the
applicable interest rate (as set forth in the Loan Agreement), and the principal
balance of which is to be paid in installments as set forth on SCHEDULE A
attached hereto and made a part hereof, or as more fully set forth in the Loan
Agreement. Capitalized terms not defined herein but defined in the Loan
Agreement shall have the meanings ascribed thereto in the Loan Agreement.

Section 1.              DEFINITIONS. As used in this Note, the following terms
shall have the following definitions:


                  "LOAN AGREEMENT" means that certain Loan Agreement dated as of
         the date hereof by and among Agent, Borrower and Lenders (as the same
         may be amended, modified or supplemented from time to time in
         accordance with terms thereof).

                  "LOAN DOCUMENTS" relates collectively to the Note, the
         Mortgage, the Loan Agreement, the Environmental Indemnity Agreement,
         the Cash Collateral Agreement, the Other Security Documents and any and
         all other documents executed in connection with this Note.

                  "OTHER SECURITY DOCUMENTS" as used in this Note shall mean all
         and any of the documents other than this Note, the Mortgage, or the
         Environmental Indemnity Agreement now or hereafter executed by Borrower
         and/or others and by or in favor of Agent and/or Lenders, which wholly
         or partially secure or guarantee payment of this Note.

Section 1.             PAYMENT AND CALCULATION OF INTEREST. Interest on the
outstanding principal indebtedness evidenced hereby shall be paid and calculated
as set forth in the Loan Agreement, and the provisions of Section 2.3 of the
Loan Agreement are hereby incorporated in this Note by reference as if set forth
herein at length.


<PAGE>


Section 1.             APPLICATION OF PAYMENT. Payments under this Note shall
be applied first to the payment of accrued interest and other costs and charges
then due and payable in connection with this Note or the Debt (as defined in the
Mortgage), as Agent may determine in its sole discretion, and the balance shall
be applied toward the reduction of the principal balance of the Loan. All
amounts due under this Note shall be payable without setoff, counterclaim or any
other deduction whatsoever.

Section 1.             SECURITY. This Note is secured by the Mortgage, the Cash
Collateral Account, the Environmental Indemnity Agreement, the Other Security
Documents and such other cash collateral accounts contemplated by the Loan
Documents as may be pledged to Agent and/or Lenders from time to time.

Section 1.             EVENT OF DEFAULT. The provisions of Article 5 of the
Loan Agreement are hereby incorporated in this Note by reference as if set forth
herein at length. In addition to the foregoing, in the event that it should
become necessary to employ counsel to collect the Debt or to protect or
foreclose the security hereof, Borrower also agrees to pay on demand all actual,
out-of-pocket costs of collection incurred by Agent, including reasonable
attorneys' fees and disbursements for the services of counsel whether or not
suit be brought.

Section 1.              DEFAULT RATE. The provisions of Section 2.6 of the Loan
Agreement are hereby incorporated in this Note by reference as if set forth
herein at length. In addition to the foregoing, accrual of interest at the
Default Rate shall be computed from the occurrence of the Event of Default until
all such Events of Default have been fully cured. Any interest computed at the
Default Rate shall be added to the Debt (as defined in the Mortgage), and shall
be deemed secured by the Mortgage. This clause, however, shall not be construed
as an agreement or privilege to extend the date of the payment of the Debt, nor
as a waiver of any other right or remedy accruing to Lenders by reason of the
occurrence of any Event of Default.

Section 1.              PREPAYMENT. The provisions of Sections 2.8 and 2.9 of
the Loan Agreement are hereby incorporated in this Note by reference as if set
forth herein at length.

Section 1.              PAYMENT AFTER DEFAULT. If following the occurrence and
during the continuance of any Event of Default, Borrower shall tender payment of
an amount sufficient to satisfy the Debt at any time prior to a sale or
realization of the Collateral, either through foreclosure or the exercise of the
other remedies available to Agent under the Mortgage or the Loan Agreement, such
tender by Borrower shall be deemed to be a voluntary prepayment under this Note
in the amount tendered. At the time of such tender, Borrower shall, in addition
to the entire Debt, also pay to Agent the applicable prepayment consideration
specified in Section 2.9 and/or 2.8 of the Loan Agreement.

Section 2.             USURY. This Note is subject to the express condition
that at no time shall Borrower be obligated or required to pay interest on the
Debt at a rate which could subject Lenders to either civil or criminal liability
as a result of being in excess of the maximum interest rate which Borrower is
permitted by applicable law to contract or agree to pay. If by the terms of


<PAGE>


this Note, Borrower is at any time required or obligated to pay interest on the
Debt at a rate in excess of such maximum rate, the rate of interest due under
this Note shall be deemed to be immediately reduced to such maximum rate and all
previous payments in excess of the maximum rate shall be, at the discretion of
Agent, refunded to Borrower or deemed to have been payments in reduction of
principal balance of the Loan and not on account of the interest due hereunder.
In the event of reduction of the principal balance of the Loan pursuant to this
Section 9 no prepayment penalty, premium or other charges, including, without
limitation, the Early Prepayment Premium or the Prepayment Premium, shall be
payable to Lenders or Agent.

Section 1.             MODIFICATION, WAIVER, CONSENT. This Note may not be
modified, amended, waived, extended, changed, discharged or terminated orally or
by any act or failure to act on the part of Borrower or Agent, but only by an
agreement in writing signed by the party against whom enforcement of any
modification, amendment, waiver, extension, change, discharge or termination is
sought. Whenever used, the singular number shall include the plural, the plural
the singular, and the words "Agent" and "Borrower" shall include their
respective successors, assigns, heirs, executors and administrators.

Section 1.              WAIVER. Borrower and all others who may become liable
for the payment of all or any part of the Debt do hereby severally waive all
notices excluding those required to be given under the Loan Documents. No
release of any security for the Debt or any person liable for payment of the
Debt, no extension of time for payment of this Note or any installment hereof,
and no alteration, amendment or waiver of any provision of the Loan Documents
made by agreement between Agent and any other person or party shall release,
modify, amend, waive, extend, change, discharge, terminate or affect the
liability of Borrower, and any other person or party who may become liable for
the payment of all or any part of the Debt, under the Loan Documents.

Section 1.             LIMITED RECOURSE. The provisions of Section 6.1 of the
Loan Agreement are hereby incorporated in this Note by reference as if set forth
herein at length.

Section 1.             AUTHORITY OF BORROWER. Borrower (and the undersigned
representative of Borrower, if any) represents that Borrower has full power,
authority and legal right to execute, deliver and perform its obligations
pursuant to this Note, the Mortgage and the other Loan Documents and that this
Note, the Mortgage and the other Loan Documents constitute valid and binding
obligations of Borrower.

Section 1.             NOTICE. All notices or other communications required or
permitted to be given pursuant hereto shall be given in the manner specified in
the Mortgage directed to the parties at their respective addresses as provided
therein.

Section 1.             TRANSFER OF MORTGAGED PROPERTY. Without the prior
written consent of Agent, Borrower shall not sell, convey, alienate, mortgage,
encumber, pledge or otherwise transfer, or permit the transfer of, directly or
indirectly, the Mortgaged Property or ownership interests of Borrower, except as
permitted in the Loan Documents.


<PAGE>


Section 1. [Intentionally Omitted]

Section 1.             SUCCESSORS AND ASSIGNS. This Note shall be binding upon
and shall inure to the benefit of Lenders and Borrower and their respective
successors and assigns permitted hereunder or under the other Loan Documents.

Section 1.             JURY TRIAL. BORROWER HEREBY, TO THE FULLEST EXTENT THAT
IT MAY LAWFULLY DO SO, WAIVES TRIAL BY JURY IN ANY ACTION OR PROCEEDING WITH
RESPECT TO THIS NOTE. THIS WAIVER OF RIGHT TO TRIAL BY JURY IS GIVEN KNOWINGLY
AND VOLUNTARILY BY BORROWER, AND IS INTENDED TO ENCOMPASS INDIVIDUALLY EACH
INSTANCE AND EACH ISSUE AS TO WHICH THE RIGHT TO TRIAL BY JURY WOULD OTHERWISE
ACCRUE. AGENT IS HEREBY AUTHORIZED TO FILE A COPY OF THIS PARAGRAPH IN ANY
PROCEEDING AS CONCLUSIVE EVIDENCE OF THIS WAIVER BY BORROWER.

Section 1.             GOVERNING LAW. This Note shall be governed by and
construed in accordance with the laws of the State of New York and the
applicable laws of the United States of America.

                  IN WITNESS WHEREOF, Borrower and Agent have duly executed this
Agreement the day and year first above written.

                           BORROWER:

                           330 N. WABASH AVENUE, L.L.C.

                           By: 77 West Wacker Limited Partnership, its


                           By:   Prime Group Realty L.P., its general partner

                                 By:  Prime Group Realty Trust, its managing
                                      general partner

                                      By:    /s/ Jeffrey A. Patterson
                                             ------------------------
                                             Jeffrey A. Patterson
                                             Executive Vice President


<PAGE>


                                   SCHEDULE A

                         PRINCIPAL AMORTIZATION SCHEDULE
<TABLE>
<S>                                         <C>                        <C>
                                            December 13, 2000          $1,600,000
                                            December 13, 2001          $3,200,000
                                            December 13, 2002          $3,200,000

In respect of the First Extension

Period, if applicable                       December 13, 2003          $4,800,000

In respect of the Second Extension

Period, if applicable                       December 13, 2004          $4,800,000
</TABLE>

<PAGE>

                                                                    Exhibit 10.3



                                    GUARANTY

                  THIS GUARANTY ("GUARANTY"), dated as of December 13, 1999, is
made by PRIME GROUP REALTY, L.P., a Delaware limited partnership, having an
address at c/o Prime Group Realty Trust, 77 West Wacker Drive, Chicago, Illinois
60601 ("GUARANTOR"), in favor of WESTDEUTSCHE IMMOBILIENBANK, a German banking
corporation ("LENDER"), whose address is Wil.-Th.-Roemheld-Str. 24, 55130 Mainz,
Germany, and is executed pursuant to the Loan Agreement, dated as of the date of
this Guaranty, by and between 330 N. Wabash Avenue, L.L.C., a Delaware limited
liability company (the "BORROWER") and Lender (hereinafter referred to as
"AGENT") for itself and Merrill Lynch Mortgage Capital Inc., a Delaware
corporation and such other co-lenders as may exist from time to time
(collectively with Agent, "LENDERS" and each individually, "LENDER") under the
Loan Agreement (such Loan Agreement, as it may from time to time be
supplemented, modified and amended in accordance with the terms thereof, being
referred to in this Guaranty as the "LOAN AGREEMENT"; capitalized terms used but
not defined herein but defined in the Loan Agreement shall have the meanings
assigned to them in the Loan Agreement), the provisions of which are
incorporated in this Guaranty by reference. The Loan Agreement provides, among
other things, for rules of construction which apply to this Guaranty.

                              W I T N E S S E T H:

                  WHEREAS, the Borrower, Agent and Lender have entered into the
Loan Agreement;

                  WHEREAS, Guarantor will derive substantial direct and indirect
benefit from the transactions contemplated by the Loan Documents; and

                  WHEREAS, the Agent is unwilling to make the loan pursuant to
the Loan Documents unless it receives a guaranty by Guarantor for the benefit of
Agent and Lender of the Guarantied Obligations (as hereinafter defined);

                  NOW, THEREFORE, in consideration of the recitals set forth
above and incorporated herein, the agreements contained herein and other good
and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, and to induce the Agent to accept the Loan Documents as aforesaid
and make the Loan, Guarantor hereby covenants and agrees as follows:

                  1. GUARANTIED OBLIGATIONS. (a) Commencing as of the first
(1st) anniversary of the funding of the Loan and subject to the provisions of
subsection (b) below, Guarantor unconditionally, absolutely and irrevocably, as
a primary obligor and not merely as a surety, guaranties to Agent the full and
punctual payment and performance of the following in accordance with the Loan
Documents (the "GUARANTIED OBLIGATIONS"): (i) in the event that the Debt Service
Coverage Ratio shall be less than 1.3:1 on a Debt Service Coverage Ratio
Calculation Date, the repayment of the first twenty percent (20%) of the
principal balance of the Loan outstanding as of the applicable Debt Service
Coverage Ratio Calculation Date; (ii) in the event that the Debt Service
Coverage Ratio is equal to or greater than 1.3:1, but less than 1.5:1 on a Debt
Service Coverage Ratio Calculation Date, the repayment of a portion of the
principal balance of the Loan outstanding as of the applicable Debt Service
Coverage Ratio Calculation Date equal to the difference between (A) the amount
of the loan outstanding as of the applicable Debt Service Coverage Ratio
Calculation Date and (B) One Hundred Thirty Five Million Dollars
($135,000,000.00); (iii) the payment and performance of all obligations under
Section 6.1(l) of the Loan Agreement; and (iv) the payment and performance of
all obligations under Section 6.1(m) of the Loan Agreement.

                  (b) In the event that the conditions set forth in subsection
(a)(i) or (ii) above shall occur, Guarantor shall only be obligated to guaranty
the Guarantied Obligations described in such subsections (a)(i) or (ii) as
applicable until, subject to future reinstatement of such Guarantied
Obligations, a Debt Service Coverage Ratio of 1.5:1 or greater is achieved for
two (2) consecutive calendar quarters. Nothing in this Section 1(b) shall limit
the Guaranteed Obligations set forth in Sections 1(a)(iii) and (iv) above.

                  (c) For the purpose of this Guaranty, the Debt Service
Coverage Ratio shall be calculated initially on the first anniversary of the
funding of the Loan, and thereafter at the end of each quarter (each, a "DEBT
SERVICE CALCULATION RATIO CALCULATION DATE").

                  2. GUARANTY ABSOLUTE. (a) Guarantor guarantees that the
Guarantied Obligations will be paid strictly in accordance with the Loan
Documents, regardless of any law, statute, rule, regulation, decree or order now
or hereafter in effect in any jurisdiction affecting or purporting to affect in
any manner any of such terms or the rights or remedies of Agent with respect
thereto.

<PAGE>

                  (b) Any payment or payments made by the Borrower or any other
person or received or collected by Agent from Borrower or any other person by
virtue of any action or proceeding or any other set-off or appropriation or
application at any time or from time to time in respect of any indebtedness,
obligations or liabilities of Borrower under the Loan Documents may be applied
by the Agent in satisfaction of such indebtedness, obligations and liabilities
in such order as Agent may determine, subject to the terms of the Loan
Documents, and no application of such payment or payments to satisfaction of
indebtedness, obligations or liabilities other than the Guarantied Obligations
shall discharge in any manner any obligations of the Guarantor hereunder.

                  (c) The liability of Guarantor under this Guaranty shall be
absolute and unconditional, and shall not be affected, released, terminated,
discharged or impaired, in whole or in part, by, and Agent may proceed to
exercise any right or remedy hereunder irrespective of, any or all of the
following:

                  (i) any lack of genuineness, regularity, validity, legality or
         enforceability, or the voidability of, all or any of the Loan Documents
         or any other agreement or instrument relating thereto;

                  (ii) the failure of Agent to exercise or to exhaust any right
         or remedy or take any action against Borrower or any collateral or
         other security available to it;

                  (iii) any amendment or modification of the terms of any or all
         of the Loan Documents;

                  (iv) any change in the time, manner or place of payment, of
         all or any of the Guarantied Obligations or any extensions of time for
         payment, whether in whole or in part, of the terms of any or all of the
         Loan Documents on the part of Borrower to be paid;

                  (v) any amendment or waiver of, or any assertion or
         enforcement or failure or refusal to assert or enforce, or any consent
         or indulgence granted by Agent with respect to a departure from, any
         term of any of the Loan Documents, including, without limiting the
         generality of the foregoing, the waiver by Agent of any default of
         Borrower, or the making of any other arrangement with, or the accepting
         of any compensation or settlement from, Borrower;

                  (vi) any failure or delay of Agent to exercise, or any lack of
         diligence in exercising, any right or remedy with respect to the Loan
         Documents or this Guaranty;

                  (vii) any dealings or transactions between Agent and Borrower,
         whether or not Guarantor shall be a party to or cognizant of the same;

                  (viii) any bankruptcy, insolvency, assignment for the benefit
         of creditors, receivership, trusteeship or dissolution of or affecting
         Borrower;

                  (ix) any exchange, surrender or release, in whole or in part,
         of any security which may be held by Agent at any time for or under the
         Loan Documents or in respect of the Guarantied Obligations;

                  (x) any other guaranty now or hereafter executed by Guarantor
         or any other guarantor or the release of any other guarantor from
         liability for the payment, performance or observance of any of the
         Guarantied Obligations or any of the terms of the Loan Documents on the
         part of Borrower to be paid, whether by operation of law or otherwise;

                  (xi) any rights, powers or privileges Agent may now or
         hereafter have against any person, entity or collateral in respect of
         the Guarantied Obligations;

                  (xii) Agent's consent to any assignment or successive
         assignments of the Loan Documents by Borrower;

                  (xiii) any other circumstance which might in any manner or to
         any extent constitute a defense available to Borrower, or vary the risk
         of Guarantor, or might otherwise constitute a legal or equitable
         discharge or defense available to a surety or guarantor, whether
         similar or dissimilar to the foregoing;

                  (xiv) any and all notice of the creation, renewal or extension
         of the Guarantied Obligations and notice of or proof of reliance by
         Agent upon this Guaranty or acceptance of the Guaranty; or


<PAGE>

                  (xv) any change, restructuring or termination of the
         organizational structure or existence of the Borrower;

whether occurring before or after any default by Borrower under the Loan
Documents, and with or without further notice to or assent from Guarantor.

                  (d) This Guaranty shall continue to be effective or be
reinstated, as the case may be, and the rights of Agent hereunder shall continue
with respect to, any Obligation (or portion thereof) at any time paid by
Borrower which shall thereafter be required to be restored or returned by Agent
upon the insolvency, bankruptcy or reorganization of Borrower, or for any other
reason, all as though such Obligation (or portion thereof) had not been so paid
or applied.

                  (e) Notwithstanding anything to the contrary contained herein,
the obligations of Guarantor hereunder shall survive the maturity, satisfaction
or assignment of the Mortgage (as defined in the Loan Documents), or foreclosure
of the Mortgage or delivery of a deed in lieu thereof; PROVIDED, HOWEVER, if the
Mortgage is satisfied and the Loan repaid in full, the Guaranty shall terminate.

                  3. REPRESENTATIONS AND WARRANTIES. Guarantor represents and
warrants, as of the date hereof, to Agent as follows:

                  (a) Guarantor is a duly organized, validly existing limited
partnership and in good standing under the laws of Delaware, and has full
power, authority and legal right to execute and deliver this Guaranty and to
perform fully and completely all of its obligations hereunder.

                  (b) The execution, delivery and performance of this
Guaranty by Guarantor has been duly authorized by all necessary action, and,
will not violate any provision of any law, regulation, order or decree of any
governmental authority, bureau or agency or of any court binding on Guarantor,
or any provision of the limited partnership agreement of Guarantor, or of any
contract, undertaking or agreement to which Guarantor is a party or which is
binding upon Guarantor or any of its property or assets, and will not result
in the imposition or creation of any lien, charge or encumbrance on, or
security interest in, any of its property or assets pursuant to the provisions
of any of the  foregoing.

                  (c) This Guaranty has been duly executed and delivered by a
duly authorized officer of the managing general partner of Guarantor and
constitutes a legal, valid and binding obligation of Guarantor, enforceable
against it in accordance with its terms, subject as to enforcement of remedies
to any applicable bankruptcy, reorganization, moratorium or other laws
affecting the enforcement of creditors' rights generally and doctrines
of equity affecting the availability of specific enforcement as a remedy.

                  (d) All necessary resolutions, consents, licenses, approvals
and authorizations of any person or entity required in connection with the
execution, delivery and performance of this Guaranty have been duly obtained
and are in full force and effect.

                  (e) There are no conditions precedent to the effectiveness of
this Guaranty that have not been either satisfied or waived.

                  (f) The Guarantor has, independently and without reliance upon
the Agent and based on such documents and information as it has deemed
appropriate, made its own credit analysis and decision to enter into this
Guaranty.

                  (g) Guarantor is the holder, directly or indirectly, of 100%
of the beneficial interests of Borrower and until the Guarantied Obligations
have been fully paid and performed, Guarantor shall continue to hold at least
fifty percent (50%) of the beneficial interests in Borrower.

                  4. WAIVERS. Guarantor expressly waives the following:

                  (a) notice of acceptance of this Guaranty and of any change in
the financial condition of Borrower;

                  (b) promptness, diligence, presentment and demand for payment
of any of the Guarantied Obligations;

                  (c) protest, notice of dishonor, notice of default and any
other notice with respect to any of the Guarantied Obligations and/or this
Guaranty;


<PAGE>

                  (d) any demand for payment under this Guaranty;

                  (e) the right to interpose all substantive and procedural
defenses of the law of guaranty, indemnification and suretyship, except the
defenses of prior payment by Borrower of the Guarantied Obligations which
Guarantor is called upon to pay under this Guaranty;

                  (f) all rights and remedies accorded by applicable law to
guarantors, or sureties, including, without being limited to, any extension of
time conferred by any law now or hereafter in effect;

                  (g) the right to trial by jury in any action or proceeding of
any kind arising on, under, out of, or by reason of or relating, in any way, to
this Guaranty or the interpretation, breach or enforcement hereof;

                  (h) the right to interpose any setoff or counterclaim of any
nature or description in any action or proceeding arising hereunder or with
respect to this Guaranty;

                  (i) any right or claim of right to cause a marshalling of the
assets of Borrower or to cause Agent to proceed against Borrower and/or any
collateral or security held by Agent at any time or in any particular order;

                  (j) any defense based on any statutory or other limitation of
the amount of any deficiency judgment available to Agent after foreclosure or
other proceedings to realize upon any collateral security; and

                  (k) any defense or benefits that may be afforded by Section
1301 of the New York Real Property Actions and Proceedings Law or any statute or
law in any other jurisdiction having similar effect.

                  (l) any defense based on the failure to make Guarantor a
defendant in any action to foreclose the Mortgage.

                  5. BANKRUPTCY. Notwithstanding anything to the contrary
herein, Guarantor's liability shall extend to all amounts which constitute part
of the Guarantied Obligations and would be owed by Borrower under the Loan
Documents but for the fact that they are unenforceable or not allowable due to
the existence of a bankruptcy, reorganization or similar proceeding involving
Borrower. Without limiting the foregoing, neither Guarantor's obligation to make
payment in accordance with this Guaranty nor any remedy for the enforcement
thereof shall be impaired, modified, changed, stayed, released or limited in any
manner by any impairment, modification, change, release, limitation or stay of
the liability of Borrower or its estate in bankruptcy or any remedy for the
enforcement thereof, resulting from the operation of any present of future
provision of the Bankruptcy Code or other statute or from the decision of any
court interpreting any of the same.

                  6. CURRENCY OF PAYMENTS. Any and all amounts required to be
paid by Guarantor hereunder shall be paid in lawful money of the United States
of America and in immediately available funds to Agent. Guarantor agrees that
whenever, at any time, or from time to time, it shall make any payment to Agent
on account of its liability hereunder, it will notify Agent in writing that such
payment is made under this Guaranty for that purpose.

                  7. WAIVER OF RIGHTS AGAINST BORROWER; SUBORDINATION. (a) Until
such time as the Loan is paid in full, Guarantor hereby irrevocably waives all
rights of subrogation and any other claims that it may now or hereafter acquire
against either Borrower or any insider that arise from the existence, payment,
performance or enforcement of Guarantor's obligations under this Guaranty or any
other documents executed in connection herewith (collectively, the "GUARANTY
DOCUMENTS"), including, without limitation, any right of reimbursement,
exoneration, contribution or indemnification and any right to participate in any
claim or remedy of Agent against either Borrower or any insider, whether or not
such claim, remedy or right arises in equity or under contract, statute or
common law, including, without limitation, the right to take or receive from
either Borrower or any insider, directly or indirectly, in cash or other
property or by set-off or in any other manner, payment or security on account of
such claim, remedy or right.

                  (b) If any amount shall be paid to Guarantor in violation of
the preceding subsection (a) at any time prior to the indefeasible cash payment
in full of all amounts payable under this Guaranty, such amount shall be held in
trust for the benefit of Agent and shall forthwith be paid to Agent to be
credited and


<PAGE>

applied to all amounts payable under this Guaranty, whether matured or
unmatured, in accordance with the terms of the Loan Documents and the Guaranty
Documents, or to be held as collateral for any amounts payable under this
Guaranty thereafter arising. Guarantor acknowledges that it has and will receive
direct and indirect benefits from the financing arrangements contemplated by the
Loan Documents and the Guaranty Documents and that the waiver set forth in this
subsection is knowingly made in contemplation of such benefits.

                  (c) All indebtedness, liabilities and obligations of Borrower
to Guarantor, whether secured or unsecured and whether or not evidenced by any
instrument, now existing or hereafter created or incurred, are and shall be
subordinate and junior in right of payment to the Guarantied Obligations.

                  8. AMENDMENT IN WRITING. No amendment or waiver of any
provision of this Guaranty nor consent to any departure by Guarantor therefrom
shall in any event be effective unless the same shall be in writing and signed
by Agent and Guarantor, and then such waiver or consent shall be effective only
in the specific instance and for the specific purpose for which given.

                  9. REMEDIES. The obligations of Guarantor under this Guaranty
are independent of the Borrower's obligations under the Loan Documents, and a
separate action or actions may be brought and prosecuted against the Guarantor
to enforce this Guaranty, irrespective of whether any action is brought against
the Borrower or whether the Borrower is joined in any such action or actions.
Any one or more successive and/or concurrent actions may be brought hereon
against Guarantor either in the same action, if any, brought against Borrower or
in separate actions, as often as Agent, in its sole discretion, may deem
advisable.

                  10. CERTIFIED STATEMENT. Guarantor agrees that it will, at any
time and from time to time, within twenty (20) days following request by Agent,
execute and deliver to Agent a statement certifying that this Guaranty is
unmodified and in full force and effect (or if modified, that the same is in
full force and effect as modified and stating such modifications).

                  11. NOTICES. Unless expressly contained herein, all notices
given hereunder shall be given in accordance with the terms of the Mortgage. All
such notices and other communications shall be effective 2 business days after
deposited in the mails addressed as aforesaid.

                  12. CONTINUING GUARANTY; SUCCESSORS AND ASSIGNS. This Guaranty
is a continuing guaranty and shall (i) remain in full force and effect until (a)
payment, performance and/or observance in full of the Guarantied Obligations and
all other amounts payable under this Guaranty and (b) repayment of the Loan,
(ii) be binding upon Guarantor, its successors and assigns, and (iii) inure to
the benefit of and be enforceable by Agent and its successors, transferees and
assigns or by any person to whom Agent's interest in the Loan Documents may be
assigned. Wherever in this Guaranty reference is made to Agent or Borrower, the
same shall be deemed to refer also to the then successor or assign of Agent or
Borrower.

                  13. GOVERNING LAW. This Guaranty shall be governed by, and
construed in accordance with, the laws of the State of New York applicable to
agreements made and to be performed entirely within said state.

                  14. SEVERABILITY. If any term, covenant, condition or
provision of this Guaranty or the application thereof to any circumstance or to
Guarantor shall be invalid or unenforceable to any extent, the remaining terms,
covenants, conditions and provisions of this Guaranty or the application thereof
to any circumstances or to Guarantor other than those as to which any term,
covenant, condition or provision is held invalid or unenforceable, shall not be
affected thereby and each remaining term, covenant, condition and provision of
each, shall not be affected thereby and each remaining term, covenant, condition
and provision of this Guaranty shall be valid and shall be enforceable to the
fullest extent permitted by law.

                  15. NONRECOURSE OBLIGATIONS. The Loan Documents contain
provisions which limit Agent's remedies against Borrower upon a default to an
action of foreclosure and realization upon the collateral encumbered by the Loan
Documents and prohibit any action to recover a deficiency judgment against
Borrower following such foreclosure and realization. None of the foregoing
provisions shall be construed to abrogate or limit the obligations of Guarantor
and this Guaranty.

                  16. INSTRUMENT FOR PAYMENT OF MONEY ONLY. Guarantor hereby
agrees and acknowledges that this Guaranty is an instrument for the payment of
money only and hereby consents that Agent, at its sole option, in the event of a
default by Guarantor in the payment of any of the amounts payable by Guarantor
hereunder, shall have the right to bring a motion or action under New York CPLR
Section 3213.


<PAGE>

                  17. ANNUAL AUDITED FINANCIAL STATEMENTS. Guarantor hereby
agrees to provide Agent with annual financial statements of the Guarantor
certified by an officer having the status of senior vice-president or above
within one hundred twenty (120) calendar days of the end of each calendar year
during the Term of the Loan.

                  18. LIABILITY OF GUARANTOR. Liability under this Guaranty
shall be limited to the Guarantor and shall not extend to any direct or indirect
partner, member, shareholder, principal, director, employee, officer or
affiliate of Guarantor.

                  19. HEADINGS. The headings used in this Guaranty are for
convenience only and are not to be considered in connection with the
interpretation or construction of this Guaranty.



<PAGE>


                  IN WITNESS WHEREOF, Guarantor has executed and delivered this
Guaranty as of the date first above written.

                                           GUARANTOR

                                           PRIME GROUP REALTY, L.P.
                                           By: Prime Group Realty Trust, its
                                           Managing General Partner


                                           BY:
                                           Jeffrey A. Patterson
                                           Executive Vice President



<PAGE>

                                                                    Exhibit 10.4


                      SEVENTH AMENDMENT TO CREDIT AGREEMENT

         This Seventh Amendment to Credit Agreement is made as of the 22nd day
of October, 1999 by and among PRIME GROUP REALTY, L.P., a Delaware limited
partnership (the "Borrower"), PRIME GROUP REALTY TRUST, a Maryland trust (the
"Company") and BANKBOSTON, N.A., a national banking association ("BankBoston"),
CIBC INC., a Delaware corporation ("CIBC"), PRUDENTIAL SECURITIES CREDIT
CORPORATION, a Delaware corporation ("Prudential"), the other lending
institutions which are from time to time listed on Schedule 1, (collectively,
with BankBoston and CIBC, the "Lenders") and BANKBOSTON, N.A., as agent for
itself and such other lending institutions (the "Agent").

         WHEREAS, the parties hereto are parties to that certain Credit
Agreement dated as of November 17, 1997 as amended by First Amendment to Credit
Agreement dated as of December 15, 1997 and by Second Amendment to Credit
Agreement dated as of March 16, 1998, as amended and restated by Third Amendment
to Credit Agreement dated as of March 30, 1998 as amended by Fourth Amendment to
Credit Agreement dated as of April 24, 1998, as amended by Fifth Amendment to
Credit Agreement dated as of October 1, 1998 and as amended and restated by
Sixth Amendment to Credit Agreement dated as of February 4, 1999 (the "Existing
Agreement"); and

         WHEREAS, the parties have agreed to amend the Existing Agreement so as
to decrease the Total Commitment and to effect certain other changes in the
Existing Agreement.

         NOW, THEREFORE, the parties hereby agree that effective upon the
Effective Date hereof (as determined pursuant to Paragraph 18 below) the
Existing Agreement is amended as follows, provided that the amended definition
of EBITDA set forth herein shall be used for all Compliance Certificates
delivered after the Effective Date, even though said Compliance Certificates may
relate to periods prior to the Effective Date:

         1. DECREASE IN TOTAL COMMITMENT. The Total Commitment is hereby
decreased to $35,000,000 and each Lender hereby decreases its Commitment to the
amount shown on the revised Schedule 1.2 attached hereto. As of the Effective
Date the Commitment Percentages of the Lenders shall be adjusted as shown on
said revised Schedule 1.2. Prudential, which is shown on such revised Schedule
1.2 as having a zero Commitment and 0% Commitment Percentage shall no longer be
a Lender hereunder after the Effective Date.

         2. DEFINITIONS: Section 1.1 of the Existing Agreement is amended to
provide that the following terms shall have the following meanings and, to the
extent that any of the following terms are already defined in the Existing
Agreement, such definitions shall be deemed to be amended and restated by the
following definitions:

         EBITDA. The Borrower's earnings before interest, taxes, depreciation
and amortization, excluding therefrom any gains or losses realized upon the
disposition of assets and other nonrecurring or extraordinary items, all as
determined on a consolidated basis in accordance with Generally Accepted
Accounting Principles, except that rental income shall be determined based on
contractual lease terms (to the extent that the applicable tenant is actually
paying rent in


<PAGE>

accordance with such terms). To the extent not already included in the Company's
EBITDA pursuant to the equity basis of accounting for the Unconsolidated
Entities, EBITDA shall also include the Unconsolidated Entity Percentage of the
earnings before interest, taxes, depreciation and amortization, excluding
therefrom any gains or losses realized upon the disposition of assets and other
nonrecurring or extraordinary items, with respect to each of the Unconsolidated
Entities.

         3. AMENDMENT TO Section 7.23. Section 7.23 is hereby amended and
restated to read as follows:

         Section 7.23. Amendments of Documents for other Recourse Indebtedness.
On or before December 31, 1999, Borrower shall deliver to the Agent copies of
amendments to each of the loan documents for the Borrower's Recourse
Indebtedness, including the Lasalle National Bank $15,000,000 line of credit and
the Bank One, Illinois $48,809,587 letter of credit facilities (unless such
facilities have been terminated prior to such time), as necessary to permanently
modify any leverage covenants and related definitions contained therein so that
such covenants are not more stringent than the 65% ratio set forth in Section
9.3 hereof, and so that such leverage covenants are calculated in the same
manner as provided in this Agreement as amended.

         4. AMENDMENT TO Section 14.12. Section 14.12 is hereby amended by
changing the Commitment amount set forth therein from $20,000,000 to
$10,000,000.

         5. UPDATED SCHEDULES TO CREDIT AGREEMENT. The following Schedules to
the Credit Agreement are hereby updated, supplemented or replaced as follows:

         (a)      Schedule 1 is replaced by Schedule 1 attached hereto.

         (b)      Schedule 1.1 is replaced by Schedule 1.1 attached hereto.

         (c)      Schedule 1.2 is replaced by Schedule 1.2 attached hereto.

         (d)      Schedule 1.3 is replaced by Schedule 1.3 attached hereto.

         (e)      Schedule 8.1(f) is replaced by Schedule 8.1(f) attached
                  hereto.

         6. REPRESENTATIONS AND WARRANTIES. The Borrower and the Company
represent and warrant that each of the representations and warranties contained
in Section 6 is true, correct and complete in all material respects as of the
date hereof to the same extent as though made on such date and that no Default
or Event of Default has occurred and is continuing on the date hereof.

         7. EFFECTIVENESS OF LOAN DOCUMENTS. The Borrower hereby confirms that
each of the Security Documents shall continue to secure the payment and
performance of all of the Obligations under the Existing Agreement as amended
hereby and the Borrower's obligations under the Security Documents shall
continue to be valid and enforceable and shall not be impaired or limited by the
execution or effectiveness of this Amendment. Every reference contained in the
Loan Documents to the Credit Agreement shall mean and be a reference to the
Existing Agreement as amended hereby and as the Credit Agreement may be further
amended.



                                       2
<PAGE>

Except as specifically amended by this Amendment, the Existing Agreement and
each of the Loan Documents shall remain in full force and effect and are hereby
ratified and confirmed.

         8. MISCELLANEOUS. This Amendment shall be governed by, interpreted and
construed in accordance with all of the same provisions applicable under the
Existing Agreement including, without limitation, all definitions set forth in
Section 1.1, the rules of interpretation set forth in Section 1.2, the
provisions relating to governing law set forth in Section 20, the provisions
relating to counterparts in Section 22 and the provision relating to
severability in Section 26.

         9. CONDITIONS TO EFFECTIVENESS. This Seventh Amendment to Credit
Agreement shall become effective on the earliest date (the "Effective Date")
that each of the following conditions precedent have been satisfied:

         (a) Documents . Each of (i) this Seventh Amendment to Credit Agreement,
(ii) the Seventh Amendment to the Guaranty, and (iii) replacement Loan Notes for
the Lenders reflecting the amount of their Commitments as reduced pursuant
hereto shall have been duly executed and delivered by the respective parties
thereto, shall be in full force and effect and shall be in form and substance
satisfactory to each of the Lenders.

         (b) Certified Copies of Amendments of Organization Documents . The
Agent shall have received a Certificate of the Company to which there shall be
attached complete copies of any amendments to the Borrower's Limited Partnership
Agreement, Borrower's Certificate of Limited Partnership the Company's
Declaration of Trust or the Company's Bylaws which have become effective since
the complete certified copies of such documents which were previously delivered
to the Agent.

         (c) Resolutions . All action on the part of the Borrower and each
Guarantor necessary for the valid execution, delivery and performance by the
Borrower and each Guarantor of this Amendment and the Seventh Amendment to the
Guaranty shall have been duly and effectively taken, and evidence thereof
satisfactory to the Agent shall have been provided to the Agent. The Agent shall
have received from the Company true copies of the resolutions adopted by its
Board of Directors authorizing the transactions described herein, certified by
its secretary to be true and complete and in effect on the Effective Date.

         (d) Opinions of Counsel . Each of the Lenders and the Agent shall have
received favorable opinions addressed to the Lenders and the Agent and dated as
of the Effective Date, substantially in the same form as, or with appropriate
provisions incorporating by reference, the opinions from Borrower's counsel
previously delivered to the Lenders and the Agent, copies of which are attached
as Exhibit E to the Credit Agreement. Such opinion may rely on opinions from
other law firms approved by the Agent as to matters of law applicable in the
various states.

         In the event that the Effective Date has not occurred on or before
October 29, 1999, then this instrument shall be void and the Existing Agreement
shall remain in effect as though this instrument had never been executed.



                                       3
<PAGE>

         IN WITNESS WHEREOF, the undersigned have duly executed this Amendment
as a sealed instrument as of the date first set forth above.


                                       PRIME GROUP REALTY TRUST

                                       By: /s/ Louis G. Conforti
                                           ----------------------------
                                           Louis G. Conforti

                                          Its: Executive Vice President


                                       PRIME GROUP REALTY, L.P.
                                       By: PRIME GROUP REALTY TRUST,
                                           its managing general partner

                                       By: /s/ Louis G. Conforti
                                           ----------------------------
                                           Louis G. Conforti

                                          Its: Executive Vice President


                                       BANKBOSTON, N.A.,, as Agent

                                       By: /s/ Lori Y. Litow
                                           ----------------------------
                                           Lori Y. Litow

                                          Its: Vice President



                                       4
<PAGE>


WITNESS:                                    BANKBOSTON, N.A.

Angela M. Collins                           By: /s/ Lori Y. Litow
                                                -----------------------
                                                Lori Y. Litow
                                                Its Vice President



Commitment:                                                        $17,500,000

Commitment Percentage:                                             50%


Notice Address:                             BankBoston, N.A.
                                            100 Federal Street
                                            Boston, MA  02110
                                            Attn: Real Estate Department

                                            With a copy to:

                                            BankBoston, N.A.
                                            115 Perimeter Center Place, N.E.
                                            Suite 500
                                            Atlanta, GA 30346
                                            Attn: Lori Y. Litow, Vice President

                                            Fax:     (770)390-8434 or 391-9811




                                       5
<PAGE>




WITNESS:                                    CIBC  INC.


______________________________              By: /s/ Joel Gershkon
                                                ------------------------
                                                Joel Gershkon


Commitment:                                                       $17,500,000

Commitment Percentage:                                            50%

Notice Address:

         CIBC Inc.
         c/o CIBC World Markets Corp.
         200 West Madison Street, Suite 2300
         Chicago, Illinois 60606
         Attn: Joel Gershkon, Executive Director

         Phone:   (312)855-3243
         Fax:     (312)855-3235

with a copy to:

         CIBC Inc.
         c/o CIBC World Markets Corp.
         2 Paces West
         2727 Paces Ferry Road, Suite 1200
         Atlanta, Georgia 30326
         Attn: Beverly Bowman

         Phone: (770) 319-4824
         Fax:   (770) 319-4950




                                       6
<PAGE>




WITNESS:                                    PRUDENTIAL SECURITIES
                                            CREDIT CORPORATION


/s/ Michael Pierro                          By: /s/ Jeffrey K. French
- ------------------------------                  -------------------------
Michael Pierro                                  Jeffrey K. French


Commitment:                                                        $0

Commitment Percentage:                                             0%

Notice Address:

         Prudential Securities Credit Corporation
         One New York Plaza
         New York, New York  10292  .
         Attn: Fuller O'Connor, Director

         Phone:   (212)778-3720
         Fax:     (212)778-3194 or 2253



                                       7
<PAGE>


                                   SCHEDULE 1

                LENDERS; DOMESTIC AND EURODOLLAR LENDING OFFICES

<TABLE>
<CAPTION>
DOMESTIC AND EURODOLLAR LENDING OFFICES:             NOTICE ADDRESS:
<S>                                                  <C>
BankBoston, N.A.                                     BankBoston, N.A.
100 Federal Street                                   100 Federal Street
Boston, MA  02110                                    Boston, MA  02110
(Domestic and Eurodollar)                            Attn: Real Estate Department

                                                     With a copy to:

                                                     BankBoston, N.A.
                                                     115 Perimeter Center Place, N.E.
                                                     Suite 500
                                                     Atlanta, GA  30346
                                                     Attn: Lori Y. Litow, Vice President
                                                     Fax:  (770) 390-8434 or 391-9811

CIBC Inc.                                            CIBC Inc.
c/o CIBC World Markets Corp.                         c/o CIBC World Markets Corp.
200 West Madison Street, Suite 2300                  200 West Madison Street, Suite 2300
Chicago, Illinois 60606                              Chicago, Illinois 60606
(Domestic and Eurodollar)

                                                     Attn: Joel Gershkon, Executive Director
                                                     Phone: (312)855-3243
                                                     Fax: (312)855-3235

                                                     with a copy to:
                                                     CIBC Inc.
                                                     c/o CIBC World Markets Corp.
                                                     2 Paces West
                                                     2727 Paces Ferry Road, Suite 1200
                                                     Atlanta, Georgia 30326

                                                     Attn: Beverly Bowman
                                                     Phone: (770) 319-4824
                                                     Fax:   (770) 319-4950
</TABLE>



                                       8
<PAGE>


                                  SCHEDULE 1.1

<TABLE>
<CAPTION>
         MORTGAGED PROPERTIES                                           FEE OWNER
         --------------------                                           ---------
<S>                                                           <C>
1.       Hilton Parking Garage, Knoxville, TN                 Triad Parking Company, Ltd.

2.       SunTrust Bank Bldg., 201 4th Ave., N.,
         Nashville, TN                                        Nashville Office Building I, Ltd.

3.       The Weston, 4823 Kingston Pike,
         Knoxville, TN                                        Old Kingston Properties, Ltd.

4.       One Centre Square, 620 Market St.,
         Knoxville, TN                                        Professional Plaza, Ltd.

5.       Two Centre Square, 625 Gay St.,
         Knoxville, TN                                        Centre Square II, Ltd.

6.       Salt Creek Office Center and Sun Annex,              1990 Algonquin Road, L.L.C.
         1990-2060 Algonquin Road, Schaumburg, IL             2010 Algonquin Road, L.L.C.

7.       Enterprise Drive Office Center,
         2205-2255  Enterprise Drive, Westchester, IL         Enterprise Drive, L.L.C.

8.       4849-4851 Groveport Pike, Obetz, Ohio                Prime Columbus Industrial, L.L.C.

9.       2160 McGaw Road, Obetz, Ohio                         Prime Columbus Industrial, L.L.C.

10.      2400-2410 McGaw Road, Obetz, Ohio                    Prime Columbus Industrial, L.L.C.

11.      5160-5168 Paul G. Blazer Memorial Parkway,           Prime Columbus Industrial, L.L.C.
         Dublin, Ohio

12.      600 London Road, Delaware, Ohio                      Prime Columbus Industrial, L.L.C.
</TABLE>




                                        8
<PAGE>


                                  SCHEDULE 1.2

                                   COMMITMENTS

<TABLE>
<CAPTION>
- ------------------------- ------------------ ------------------- ----------------------- -------------------
         LENDER               COMMITMENT       COMMITMENT ON AND       COMMITMENT %           COMMITMENT
                              PRIOR TO          AFTER EFFECTIVE         PRIOR TO             % ON AND AFTER
                            EFFECTIVE DATE          DATE             EFFECTIVE DATE         EFFECTIVE DATE
- ------------------------- ------------------ ------------------- ----------------------- -------------------
<S>                       <C>                <C>                 <C>                     <C>
BankBoston, N.A.          $30,000,000        $17,500,000         40%                     50%
- ------------------------- ------------------ ------------------- ----------------------- -------------------
Prudential Securities     $10,000,000        $0                  13.3333333%             0%
Credit Corporation
- ------------------------- ------------------ ------------------- ----------------------- -------------------
CIBC Inc.                 $35,000,000        $17,500,000         46.6666667%             50%
- ------------------------- ------------------ ------------------- ----------------------- -------------------
Total                     $75,000,000        $35,000,000.00      100%                    100%
- ------------------------- ------------------ ------------------- ----------------------- -------------------
</TABLE>







                                       9

<PAGE>

                                                                    Exhibit 10.5


                       FOURTH NOTE MODIFICATION AGREEMENT

               THIS FOURTH NOTE MODIFICATION AGREEMENT (this "MODIFICATION") is
made as of this 5th day of November, 1999 by and between LASALLE BANK NATIONAL
ASSOCIATION (formerly known as LaSalle National Bank) (the "LENDER") and PRIME
GROUP REALTY, L.P., a Delaware limited partnership (the "BORROWER").

                                    RECITALS:

        1. The Lender, the Borrower, and Prime Group Realty Trust (the
"COMPANY") have previously executed and delivered a loan agreement dated January
28, 1998, as amended by that certain Amended and Restated Loan Agreement dated
as of October 1, 1998, as further amended by that certain Second Amended and
Restated Loan Agreement dated as of March 23, 1999, and as further amended by an
Amendment to Second Amended and Restated Loan Agreement dated as of June 30,
1999 (the "Amended Loan Agreement"), setting forth the terms and conditions of a
revolving line of credit in favor of Borrower (the "LOAN").

        2. In connection with the Second Amended and Restated Loan Agreement,
Borrower has previously executed and delivered to Lender a certain Revolving
Loan Note dated January 28, 1998, as amended by a Note Modification Agreement
dated as of October 1, 1998, and as further amended by a Second Note
Modification Agreement dated as of March 23, 1999, and as further amended by a
Third Note Modification Agreement dated as of June 30, 1999 (the "MODIFIED
NOTE"), in the original principal face amount of $15,000,000, payable to the
order of Lender, and evidencing the Loan.

        3. 475 Superior Avenue, L.L.C. ("MORTGAGOR") is a guarantor of the Loan,
pursuant to the Guaranty (defined below).

        4. To secure Mortgagor's obligations as a Guarantor under that certain
Guaranty of Payment and Performance dated January 28, 1998, as modified pursuant
to that certain First Amendment to Guaranty dated February 17, 1998, as further
modified by that certain Release and Reaffirmation of Guaranty dated as of
October 1, 1998, as further modified by that certain Second Reaffirmation of
Guaranty and Addition of Guarantor Subsidiaries dated as of March 23, 1999, as
further modified by that certain Third Reaffirmation of Guaranty dated as of
June 30, 1999, and as further modified by that certain Fourth Reaffirmation of
Guaranty of even date herewith (the "GUARANTY"), and in consideration of the
Loan made to Borrower, Mortgagor has previously executed and delivered to Lender
the following documents, each dated January 28, 1998, as amended by that certain
First Amendment to Loan Documents dated as of October 1, 1998 and recorded in
the real property records of Lake County, Indiana as Document Number 98093313,
as further amended by that certain Second Amendment to Loan Documents dated as
of March 23, 1999 and recorded in the real property records of Lake County,
Indiana as Document Number 99029971, and as further amended by that certain
Third Amendment to Loan Documents dated as of June 30, 1999 and recorded in the
real property records of Lake County, Indiana as Document Number 99057426:

               (a) that certain Mortgage, Assignment of Leases and Rents,
               Security Agreement, and Financing Statement, executed and
               delivered by the Mortgagor,


<PAGE>



               recorded in the real property records of Lake County, Indiana as
               Document Number 98006633 and encumbering certain real property
               described therein, and as described on Exhibit A hereto (the
               "MORTGAGE");

               (b) that certain Assignment of Leases and Rents, executed and
               delivered by the Mortgagor, recorded in the real property records
               of Lake County, Indiana as Document Number 98006634 and
               encumbering certain real property described therein, and as
               described in Exhibit A hereto (the "ASSIGNMENT");

               (c) that certain Security Agreement executed and delivered by
               Mortgagor encumbering certain collateral described therein (the
               "SECURITY AGREEMENT");

        5. The Lender, the Borrower and the Company have amended the Amended
Loan Agreement pursuant to that Second Amendment to Second Amended and Restated
Loan Agreement dated of even date herewith (the "SECOND AMENDMENT TO SECOND
AMENDED AND RESTATED LOAN AGREEMENT"; the Amended Loan Agreement, as amended by
the Second Amendment to Second Amended and Restated Loan Agreement, is
hereinafter referred to as the "Second Amended Loan Agreement").

        6. The Lender and Mortgagor have further amended the Mortgage,
Assignment, and Security Agreement pursuant to that certain Fourth Amendment to
Loan Documents dated of even date herewith (the "FOURTH AMENDMENT TO LOAN
DOCUMENTS").

               NOW THEREFORE, in consideration of the foregoing recitals, and
for other good and valuable consideration, the receipt and sufficiency of which
are hereby acknowledged, the Lender and Borrower agree as follows:

        A.     AMENDMENT OF THE MODIFIED NOTE

        The Modified Note is hereby amended as follows:

               (1) Any and all references in the Modified Note to the Amended
               Loan Agreement shall be deemed to refer to the "Second Amended
               Loan Agreement, as may be further amended from time to time."

               (2) Any and all references to the Mortgage, Assignment, or
               Security Agreement shall be deemed to refer to the Mortgage,
               Assignment, or Security Agreement "as amended by the Fourth
               Amendment to Loan Documents and as may be further amended from
               time to time."

        B. FULL FORCE AND EFFECT. All of the provisions, rights, powers, and
remedies contained in the Note shall stand and shall remain unchanged and in
full force and effect, except to the extent specifically amended hereby.


                                       -2-


<PAGE>



         C. COUNTERPARTS. This Modification may be executed in any number of
counterparts, each of which shall be deemed an original, but which together
shall constitute one and the same instrument.

            [the remainder of this page is intentionally left blank]


                                       -3-


<PAGE>


               IN WITNESS WHEREOF, this Modification has been duly executed
effective as of the date first written above.

                                    LENDER:

                                    LASALLE BANK NATIONAL ASSOCIATION, a
                                    national banking association

                                    By:     _________________________________
                                    Name:   _________________________________
                                    Its:    _________________________________

                                    BORROWER:

                                    PRIME GROUP REALTY, L.P., a Delaware
                                    limited partnership

                                    By:     PRIME GROUP REALTY TRUST, a
                                            Maryland trust, its general partner

                                            By:   /s/ Patrick L. McGaughy
                                                  ----------------------------
                                            Name: Patrick L. McGaughy
                                            Its:  Vice President


                                       -4-



<PAGE>

                                                                    Exhibit 10.6


                 SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
                                 LOAN AGREEMENT

              THIS SECOND AMENDMENT TO SECOND AMENDED AND RESTATED LOAN
AGREEMENT, dated as of November 5, 1999, is entered into by and among LASALLE
BANK NATIONAL ASSOCIATION (formerly known as LaSalle National Bank) (the
"LENDER"), PRIME GROUP REALTY, L.P., a Delaware limited partnership (the
"BORROWER"), and PRIME GROUP REALTY TRUST, a Maryland trust (the "Company")

                                R E C I T A L S:

       1. The Lender has made certain revolving financing accommodations
available to the Borrower pursuant to that certain Loan Agreement dated as of
January 28, 1998 between Lender, Borrower and Company ("Original Agreement");

       2. The Original Agreement was amended and restated in its entirety
pursuant to that certain Amended and Restated Loan Agreement dated as of October
1, 1998 and that certain Second Amended and Restated Loan Agreement dated as of
March 23, 1999, which was amended by that certain Amendment to Second Amended
and Restated Loan Agreement dated as of June 30, 1999 (the "Loan Agreement");
and

       3. Borrower and Lender have agreed that Borrower will increase the
Maximum Facility to $12,000,000 on the date hereof until December 15, 1999 upon
the terms and conditions set forth in this Amendment.

              NOW, THEREFORE, in consideration of the parties' mutual agreements
contained herein, the parties hereby agree as follows:

         A. AMENDMENT TO LOAN AGREEMENT: The Loan Agreement is amended as
follows:

              (1) On and after the date hereof and prior to December 15, 1999,
              "Maximum Facility" shall mean $12,000,000;

              (2) On and after December 15, 1999, "Maximum Facility" shall mean
              $10,000,000.00.

       B. REDUCTION OF LOANS. Not later than December 15, 1999, Borrower shall
reduce the amount of outstanding Loans to $10,000,000 or less. Each payment made
prior to December 15, 1999 of amounts borrowed and outstanding in excess of
$10,000,000 will be deemed a permanent reduction of the Maximum Facility and the
balance of the Loan.

        C. FULL FORCE AND EFFECT. All of the provisions, rights, powers, and
remedies contained in the Loan Agreement shall stand and shall remain unchanged
and in full force and effect, except to the extent specifically amended hereby.
Any discrepancy between the provisions of the Loan Agreement and those of this
Amendment shall be governed by the provisions of this Amendment.



<PAGE>



        D. DEFINED TERMS. All capitalized terms utilized in this Amendment
without definition shall have the meaning ascribed to such terms in the Loan
Agreement.

         E. COUNTERPARTS. This Amendment may be executed in any number of
counterparts, each of which shall be deemed an original, but which together
shall constitute one and the same instrument.


            [the remainder of this page is intentionally left blank]


                                       -2-


<PAGE>



              IN WITNESS WHEREOF, the Borrower, Company, and Lender have
executed and delivered this Amendment.

                                 "BORROWER"

                                 PRIME GROUP REALTY, L.P.

                                 By:    PRIME GROUP REALTY TRUST,
                                        its general partner

                                        By: /s/ Patrick L. McGaughy
                                            --------------------------
                                            Patrick L. McGaughy

                                        Its:  Vice President

                                 "COMPANY"

                                 PRIME GROUP REALTY TRUST

                                        By: /s/ Patrick L. McGaughy
                                            --------------------------
                                            Patrick L. McGaughy

                                        Its:  Vice President

                                 "LENDER"

                                 LASALLE BANK NATIONAL
                                 ASSOCIATION (formerly known as
                                 LaSalle National Bank)

                                 By:__________________________________

                                 Title:_______________________________


                                       -3-


<PAGE>

                                                                    EXHIBIT 12.1

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

             STATEMENTS REGARDING COMPUTATION OF RATIOS OF EARNINGS
           TO COMBINED FIXED CHARGES AND PREFERRED SHARE DISTRIBUTIONS

                             (DOLLARS IN THOUSANDS)

<TABLE>
<CAPTION>

                                           Prime Group Realty Trust - Historical                       Predecessor - Historical
                                       ----------------------------------------------- ---------------------------------------------
                                                                        Period from      Period from
                                                                       November 17,        January 1,
                                                                       1997 through      1997 through
                                           Year ended December 31,     December 31,      November 16,     Year ended December 31,
                                             1999           1998           1997              1997           1996          1995
                                       ----------------------------------------------- ---------------------------------------------
<S>                                        <C>             <C>             <C>             <C>              <C>          <C>
Earnings
  Income (loss) before preferred share
   distributions and minority interest
   per the consolidated/combined

   financial statements..............      $33,567         $30,866         $1,427          $(29,050)        $(31,417)    $ (29,576)
  Interest expense...................       42,648          30,901          1,680            34,417           37,217        36,234
  Amortization of debt issuance costs        2,424           1,230            140               630              594         1,148
                                       ----------------------------------------------- ---------------------------------------------
  Earnings...........................      $78,639         $62,997         $3,247         $   5,997       $    6,394    $    7,806
                                       =============================================== =============================================
  Fixed Charges
  Interest expense...................      $42,648         $30,901         $1,680          $ 34,417         $ 37,217      $ 36,234
  Capitalization of interest expense.        7,986           2,498              -                 -                -             -
  Amortization of debt issuance costs        2,424           1,230            140               630              594         1,148
  Preferred share distributions......       12,103           7,971            345                 -                -             -
                                       ----------------------------------------------- ---------------------------------------------
  Total fixed charges................      $65,161         $42,600         $2,165          $ 35,047         $ 37,811      $ 37,382
                                       =============================================== =============================================
  Ratio of earnings to combined fixed
   charges and preferred share
   distributions.....................         1.21            1.48           1.50                 -                -             -
                                       =============================================== =============================================
  Excess (deficit) of earnings to
   combined fixed charges and
   preferred share distributions.....      $13,478         $20,397         $1,082          $(29,050)        $(31,417)     $(29,576)
                                       =============================================== =============================================
  Funds from Operations
  Funds from operations..............    $  53,415         $46,762         $3,619          $(14,461)        $(17,367)     $(12,733)
  Interest expense...................       42,648          30,901          1,680            34,417           37,217        36,234
  Amortization of debt issuance costs..      2,424           1,230            140               630              594         1,148
  Preferred share distributions......       12,103           7,971            345                 -                -             -
                                       ----------------------------------------------- ---------------------------------------------
  Adjusted funds from operations.....     $110,590         $86,864         $5,784          $ 20,586         $ 20,444      $ 24,649
                                       =============================================== =============================================
  Fixed Charges
  Interest expense...................      $42,648         $30,901         $1,680          $ 34,417         $ 37,217      $ 36,234
  Capitalization of interest expense.        7,986           2,498              -                 -                -             -
  Amortization of debt issuance costs..      2,424           1,230            140               630              594         1,148
  Preferred share distributions......       12,103           7,971            345                 -                -             -
                                       ----------------------------------------------- ---------------------------------------------
  Total fixed charges................      $65,161         $42,600         $2,165          $ 35,047         $ 37,811      $ 37,382
                                       =============================================== =============================================
  Ratio of funds from operations to
   combined fixed charges and
   preferred share distributions.....         1.70            2.04           2.67                 -                -             -
                                       =============================================== =============================================
  Excess (deficit) of funds from
   operations to combined fixed
   charges and preferred share             $45,429         $44,264          $3,619         $(14,461)        $(17,367)     $(12,733)
   distributions.....................
                                       =============================================== =============================================

</TABLE>


<PAGE>

                                                                    EXHIBIT 21.1

                  PRIME GROUP REALTY TRUST AND THE PREDECESSOR

                         SUBSIDIARIES OF THE REGISTRANT

                                DECEMBER 31, 1999

         The following represents the Prime Group Realty Trust's (the "Company")
and Prime Group Realty, L.P.'s (the "Operating Partnership") operating
subsidiaries (the Company and the Operating Partnership have a majority interest
or control) and related properties as of December 31, 1999:

<TABLE>
<CAPTION>

                             ENTITY                                                        PROPERTY

<S>                                                               <C>
77 West Wacker Limited Partnership (1), (3), (8)                  IBM Plaza, Brugh Hill Office Center
Nashville Office Building I, Ltd. (1), (9)                        201 4th Avenue North (Suntrust Building)
Professional Plaza, Ltd. (1), (9)                                 620 Market Street (Professional Plaza)
Old Kingston Properties, Ltd. (1), (9)                            4823 Old Kingston Pike (Weston Building)
Centre Square II, Ltd. (1), (9)                                   625 Gay Street (Centre Square II)
East Chicago Enterprise Center Limited Partnership (1), (2), (8)  4440 and 4635 Railroad Avenue
Enterprise Center I, L.P. (1), (4), (8)                           4407 Railroad Avenue
Enterprise Center II, L.P. (1), (8)                               4407 Railroad Avenue (Bldg 2)
Enterprise Center III, L.P. (1), (8)                              4407 Railroad Avenue (Bldg 3)
Enterprise Center IV, L.P. (1), (8)                               4407 Railroad Avenue (Bldg 4)
Hammond Enterprise Center Limited Partnership (1), (2), (8)       4507 and 4527 Columbia Avenue
Enterprise Center V, L.P. (1), (2), (8)                           4531 Columbia Avenue
Enterprise Center VI, L.P. (1), (8)                               4527 and 4531 Columbia Avenue
Kemper/Prime Industrial Partners (1), (2), (4), (10)              13535 South Torrence Avenue
Enterprise Center VII, L.P. (1), (2), (8)                         13535 - B South Torrence Avenue
Enterprise Center VIII, L.P. (1), (8)                             13535 - A and D South Torrence Avenue
Enterprise Center IX, L.P. (1), (2), (8)                          13535 - E, F and G South Torrence Avenue
Enterprise Center X, L.P. (1), (2), (8)                           13535 - C and H South Torrence Avenue
Arlington Heights I, L.P. (1), (2), (8)                           425 E. Algonquin Road
Arlington Heights II, L.P. (1), (2), (8)                          425 E. Algonquin Road
Arlington Heights III, L.P. (1), (2), (8)                         425 E. Algonquin Road
Triad Parking Company, Ltd. (1), (9)                              Triad Parking Facility
1990 Algonquin Road, L.L.C. (7)                                   1990 Algonquin Road (Salt Creek Office Center)
2010 Algonquin Road, L.L.C. (7)                                   2000-2060 Algonquin Road (Sun Annex)
1699 E. Woodfield Road, L.L.C. (3), (7)                           1699 E. Woodfield Road (Citibank Office Plaza)
475 Superior Avenue, L.L.C. (7)                                   475 Superior Avenue
Enterprise Drive, L.L.C. (7)                                      2205-2255 Enterprise Drive (Enterprise Office Center)
280 Shuman Blvd., L.L.C. (7)                                      280 Shuman Blvd. (Atrium)
2675 N. Mayfair Road, L.L.C. (7)                                  2675 N. Mayfair Road (Wauwatosa Building)
Prime Columbus Industrial, L.L.C. (7)                             2160 McGraw Road, 4849 Groveport Road, 2400 McGraw
                                                                      Road, 5160 Blazer Memorial Parkway, 600 London Road

1051 N. Kirk Road, L.L.C. (3), (7)                                1051 N. Kirk Road
4211 Madison Street, L.L.C. (3), (7)                              4211 Madison Street
200 E. Fullerton, L.L.C. (3), (7)                                 200 E. Fullerton
350 Randy Road, L.L.C. (3), (7)                                   350 Randy Road
4300 Madison Street, L.L.C. (3), (7)                              4300, 4248, 4250 Madison Street
370 Carol Lane, L.L.C. (3), (7)                                   370 Carol Lane
388 Carol Lane, L.L.C. (3), (7)                                   388 Carol Lane

</TABLE>

<PAGE>

<TABLE>
<CAPTION>

                           ENTITY                                                         PROPERTY

<S>                                                          <C>
342 Carol Lane, L.L.C. (3), (7)                              342-346 Carol Lane
343 Carol Lane, L.L.C. (3), (7)                              343 Carol Lane
371 N. Gary Avenue, L.L.C. (3), (7)                          371-385 N. Gary Avenue
1600 167th Street, L.L.C. (3), (7)                           1600-1700 167th Street (Narco River Business Center)
1301 E. Tower Road, L.L.C. (3), (7)                          1301 E. Tower Road (Narco Tower)
4343 Commerce Court, L.L.C. (3), (7)                         4343 Commerce Court (The Olympian Office Center)
11039 Gage Avenue, L.L.C. (3), (7)                           11039 Gage Avenue
11045 Gage Avenue, L.L.C. (3), (7)                           11045 Gage Avenue
1401 S. Jefferson, L.L.C. (3), (7)                           1401 S. Jefferson
4100 Madison Street, L.L.C. (3), (7)                         4100 West Madison Street
4160 Madison Street, L.L.C. (3), (7)                         4160-4190 West Madison Street
550 Kehoe Blvd., L.L.C. (3), (7)                             550 Kehoe Blvd.
33 North Dearborn, L.L.C. (3), (7)                           33 North Dearborn Street
Wilke - Venture, L.L.C. (3), (7)                             3800 and 3850 North Wilke Road and 3930 Ventura Drive(Commerce
                                                                Point)
Michigan - Adams L.L.C. (3), (7)                             122 South Michigan Avenue
LaSalle-Adams, L.L.C. (3), (7)                               208 South LaSalle Street
Two Century Centre, L.L.C. (3), (7)                          1700 East Golf Road (Two Century Centre)
6400 Shafer Court, L.L.C. (3), (7)                           6400 Shafer Court
2100 Swift Drive, L.L.C. (3), (7)                            2100 Swift Drive
2000 York Road, L.L.C. (3), (7)                              2000 York Road (2000 York Brook)
Libertyville Corporate Office Park, L.L.C. (4), (7)          Pine Meadows Center
DeKalb Business Park, L.L.C. (4), (7)                        Property under development
Prime Aurora, L.L.C. (4), (7)                                Property under development
Prime Rolling Meadows, L.L.C. (4), (7)                       Property under development
Prime/Beitler Development Company, L.L.C.(4), (5), (7)       Property under development
Oak Brook Business Center, L.L.C. (6), (7)                   -
330 N. Wabash Avenue, L.L.C. (7)                             IBM Plaza
Kimberly East, L.L.C. (4), (7)                               Property under development
2000 USG Drive, L.L.C. (4), (7)                              Property under development
BRE/City Center, L.L.C. (7)                                  National City Center
33 W. Monroe, L.L.C. (3), (7)                                33 W. Monroe Street
Monroe-Wacker, L.L.C. (4), (7)                               Property under development
Monroe-Wacker Office, L.L.C. (7)                             Property under development
Brush Hill Office Center, L.L.C. (7)                         Brush Hill Office Court
800 Jorie Blvd., L.L.C. (7)                                  800-810 Jorie Blvd.
43 Hintz Road, L.L.C. (7)                                    43-47 Hintz Road
Phoenix Office, L.L.C. (7)                                   Investment partnership
180 Kehoe Blvd., L.L.C. (4), (7)                             Property under development
180 N. LaSalle, L.L.C. (3), (7)                              Own mortgage note receivable on 180 N. LaSalle
PGR Finance I, Inc. (11)                                     Member of Wilke-Ventura, L.L.C.
PGR Finance II, Inc. (11)                                    Member of LaSalle-Adams, L.L.C.
PGR Finance III, Inc. (11)                                   Member of Eight on L.L.C's described above
PGR Finance IV, Inc. (11)                                    -
PGR Finance V, Inc. (11)                                     Member of 1699 E. Woodfield Road, L.L.C.
PGR Finance VI, Inc. (11)                                    Member in Three of the L.L.C.'s described above
PGR Finance VII, Inc. (11)                                   Member of 6400 Shafer  Court, L.L.C.
PGR Finance VIII, Inc. (11)                                  Limited Partner of 77 West Wacker Limited Partnership
PGR Finance IX, Inc. (11)                                    Member of 2000 York Road, L.L.C.
PGR Finance X, Inc. (11)                                     Member of Two Century Center, L.L.C.

</TABLE>

<PAGE>

<TABLE>

<S>                                                          <C>
PGR Finance XI, Inc. (11)                                    Member of 180 N. LaSalle, L.L.C.
PGR Finance XII, Inc. (11)                                   Member of 33 W. Monroe, L.L.C.
PGR Finance XIII, Inc. (11)                                  Member Six of the L.L.C.s described above
PGR Finance XIV, Inc. (11)                                   Member in 1051 N. Kirk Road, L.L.C. of 4343 Commerce Court, L.L.C.
33 N. Dearborn SPC, Inc. (11)                                Member of 33 N. Dearborn, L.L.C.
455 Academy Drive, L.L.C. (7)                                Former owner of 455 Academy Drive
33 W. Monroe - I, L.L.C. (7)                                 Member of 33 W. Monroe, L.L.C.
Libertyville Corporate Office Park II, L.L.C. (7)            Owner of Vacant Land adjacent 80 Pine Meadow Corporate Office Park
Kimberly West, L.L.C. (7)                                    Owner of Vacant Land in Carol Stream, Illinois
2305 Enterprise Drive, L.L.C. (7)                            Owner of 2305 Enterprise Drive

</TABLE>
- ------------------
(1)  Represents entities and properties previously owned by the Predecessor and
     whose operations were included in the Predecessor's combined financial
     statements.

(2)  These entities have divided the ownership of the related properties.

(3)  The Company has an indirect ownership interest in these entities through
     wholly owned subsidiaries (PGR Finance I-XT, Inc. and 33 N. Dearborn SPC,
     Inc.).

(4)  These entities own parcels of land that are currently under development.

(5)  The Company owns approximately 90% of the entity and the remaining
     ownership interest has been reflected as minority interest- other at
     December 31, 1999.

(6)  These subsidiaries currently do not own any property.

(7)  Delaware Limited liability Company

(8)  Illinois Limited Partnership

(9)  Tennessee Limited Partnership

(10)  Illinois General Partnership

(11)  Delaware Corporation


<PAGE>

                                                                    EXHIBIT 23.1

                         CONSENT OF INDEPENDENT AUDITORS

         We consent to the incorporation by reference in the Registration
Statement (Form S-3 No. 333-70369) of Prime Group Realty Trust and in the
Registration Statement (Form S-8 No.333-65147) pertaining to the Prime Group
Realty Trust Share Incentive Plan of our report dated March 7, 2000, with
respect to the consolidated financial statements of Prime Group Realty Trust
included in the Annual Report (Form 10-K) for the year ended December 31, 1999.

         Our audits also included the financial statement schedule of Prime
Group Realty Trust listed in Item 14(a). This schedule is the responsibility of
the Company's management. Our responsibility is to express an opinion based on
our audits. In our opinion, the financial statement schedule referred to above,
when considered in relation to the basic financial statements taken as a whole,
presents fairly in all material respects the information set forth therein.

                                                            /s/ERNST & YOUNG LLP

Chicago, Illinois
March 20, 2000

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               DEC-31-1999
<CASH>                                          21,167
<SECURITIES>                                         0
<RECEIVABLES>                                  103,626
<ALLOWANCES>                                         0
<INVENTORY>                                     80,541
<CURRENT-ASSETS>                                     0
<PP&E>                                       1,276,818
<DEPRECIATION>                                (37,977)
<TOTAL-ASSETS>                               1,444,175
<CURRENT-LIABILITIES>                          271,666
<BONDS>                                        838,874
                                0
                                         40
<COMMON>                                           152
<OTHER-SE>                                     333,443
<TOTAL-LIABILITY-AND-EQUITY>                 1,444,175
<SALES>                                              0
<TOTAL-REVENUES>                               249,604
<CGS>                                                0
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                               151,026
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              42,648
<INCOME-PRETAX>                                 54,848
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                                  0
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                (1,082)
<CHANGES>                                            0
<NET-INCOME>                                    54,848
<EPS-BASIC>                                       2.82
<EPS-DILUTED>                                     2.81
<FN>
<F1>Amount includes restricted cash escrows ($42,140), net deferred costs
($26,901), and other assets ($11,500)
<F2>Amount includes accrued interest payable ($3,508), accrued real estate taxes
($40,689), accounts payable and accrued expenses ($36,133), liabilities for
leases assumed ($3,235), dividends payable ($8,122), other liabilities
($10,909) and minority interest of ($169,070),
<F3>Amount includes property operations ($44,446), real estate taxes ($34,470),
depreciation and amortization ($33,258), loss on land development option
($600), general and administrative expenses ($7,565) and minority interests
allocation ($30,687).
</FN>


</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission