CORNERSTONE PROPERTIES INC
8-K, 1998-08-26
REAL ESTATE
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                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                    FORM 8-K
                                 Current Report
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

                                 August 26, 1998

                           CORNERSTONE PROPERTIES INC.
             (Exact name of registrant as specified in its charter)

               Nevada                0-10421             74-2170858
  (State or other jurisdiction of  (Commission         (IRS Employer
          incorporation)           File Number)     Identification No.)

                           Cornerstone Properties Inc.
                                    Tower 56
                              126 East 56th Street
                               New York, NY 10022
                    (Address of principal executive offices)

                                 (212) 605-7100
                         (Registrant's telephone number,
                              including area code)


<PAGE>


    Item 2. Acquisition or Disposition of Assets
            ------------------------------------

            The press release issued by the Registrant regarding the acquisition
            of One  Memorial  Drive,  dated April 27,  1998,  a copy of which is
            included with this Form 8-K as Exhibit 99.1, is incorporated  herein
            by reference.

            The  press  releases   issued  by  the   Registrant   regarding  the
            acquisition of 201 California Street and Wilshire  Palisades,  dated
            February  25,  1998 and June 9, 1998,  copies of which are  included
            with this Form 8-K as Exhibit 99.2 and 99.3, are incorporated herein
            by reference.


    Item 7. Financial Statements and Exhibits.
            ----------------------------------

(a) Included  herewith are the following  financial  statements  reflecting  the
    acquisition of One Memorial  Drive, 201  California   Street  and  Wilshire
    Palisades (the "Properties").


    One Memorial Drive
    ------------------

    Report of Ernst and Young LLP, Independent Accountants, 
    dated June 12, 1998                                                      F-2

    Statement of Revenues and Certain Expenses for the year ended
    December 31, 1997 and for the three months ended March 31, 1998          F-3

    Notes to Statement of Revenues and Certain Expenses for the year
    ended December 31, 1997                                                  F-4


    201 California Street (or California Front Building)
    ----------------------------------------------------
    Report of Arthur Andersen LLP, Independent Accountants,
    dated June 30, 1998                                                      F-8

    Statement of Revenue and Certain Expenses for the year ended
    December 31, 1997 and for the five months ended May 31, 1998             F-9

    Notes to Statement of Revenue and Certain Expenses for the year
    ended December 31, 1997                                                 F-10


    Wilshire Palisades Building
    ---------------------------
    Report of Arthur Andersen LLP, Independent Accountants, 
    dated June 30, 1998                                                     F-13

    Statement of Revenue and Certain Expenses for the year ended
    June 30, 1997 and for the eleven months ended May 31, 1998              F-14

    Notes to Statement of Revenue and Certain Expenses for the year
    ended June 30, 1997                                                     F-15

<PAGE>

(b) Pro Forma Financial Information  (Unaudited)

    Condensed Consolidated Balance Sheet as of June 30, 1998                F-18

    Condensed Consolidated Pro Forma Statement of Income for the twelve
    months ended December 31, 1997                                          F-19

    Condensed  Consolidated  Pro Forma  Statement of Income for the six 
    months ended June 30, 1998                                              F-20

    Notes to Condensed Consolidated Pro Forma Financial Statements          F-21



(c) Exhibits
         Exhibit 99.1 - Press release, dated April 27, 1998.

         Exhibit 99.2 - Press release, dated February 25, 1998.

         Exhibit 99.3 - Press release, dated June 9, 1998.

<PAGE>

                  CORNERSTONE PROPERTIES INC. AND SUBSIDIARIES
               INFORMATION PURSUANT TO RULE 3-14 OF REGULATION S-X

         MANAGEMENT ASSESSMENT

         Management's   assessment  of  the  Properties   prior  to  acquisition
includes,  but is not  limited  to, the  quality of the  tenant  base,  regional
demographics, the competitive environment, operating expenses and local property
taxes. In addition, the physical aspect of the Properties,  location,  condition
and quality of design and construction  are evaluated.  Management also conducts
engineering  and  environmental  studies.  All  factors,  when  viewed  in their
entirety, have met management's acquisition criteria. Management is not aware of
any material  factors  relating to the  acquisitions  other than those discussed
above.

         ESTIMATES OF TAXABLE OPERATING INCOME AND
         FUNDS GENERATED FROM OPERATIONS

         No income taxes have been provided because Cornerstone  Properties Inc.
is taxed as a real estate  investment trust under the provisions of the Internal
Revenue Code. Accordingly,  Cornerstone does not pay Federal income tax whenever
income  distributed  to  stockholders  is equal to at least  95% of real  estate
investment trust taxable income and certain other conditions are met.

         The following  presents an estimate of cash generated  from  operations
for  Cornerstone  Properties  Inc. for the year ended December 31, 1997 based on
the Condensed  Consolidated  Pro Forma Statement of Income for the twelve months
ended  December  31,  1997.  These  estimated  results do not purport to present
expected  results of operations  for the Company in the future and were prepared
on the  basis  described  in the  accompanying  notes  which  should  be read in
conjunction herewith.

<TABLE>
<CAPTION>

                                        Estimated Cash Generated From Operations
                                        For the year ended December 31, 1997
                                        ------------------------------------
                                                                 (000's)
<S>                                                            <C>
Pro Forma Net Income                                            $94,453
Plus: Pro Forma Depreciation and Amortization                    56,301
Plus: Unconsolidated Pro Forma Depreciation                       3,506
Plus: Minority interest adjustments                               1,861
Less: Straight line rent adjustment                             (14,595)
                                                               --------- 
                                                               $141,526
                                                               ========
</TABLE>


<PAGE>

                                   SIGNATURES
                                   ----------

Pursuant  to the  requirements  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.

                             CORNERSTONE PROPERTIES INC.
                             (Registrant)

                             By: /s/ John S. Moody
                                 -------------------------------------------
                                 John S. Moody, President and
                                 Chief Executive Officer
                             
                             Date:  August 26, 1998


                             By: /s/ Kevin P. Mahoney
                                 -------------------------------------------
                                 Kevin P. Mahoney, Senior Vice President and
                                 Chief Financial Officer

                             Date:  August 26, 1998

<PAGE>

                                One Memorial Drive
                            Cambridge, Massachusetts
                   Statement of Revenues and Certain Expenses

                          Year ended December 31, 1997






                                    Contents

Report of Independent Auditors...............................................F-2
Statement of Revenues and Certain Expenses...................................F-3
Notes to Statement of Revenues and Certain Expenses..........................F-4


















                                       F-1

<PAGE>

                         Report of Independent Auditors

To the Shareholders and Board of Directors
Cornerstone Properties Inc.

We have audited the  accompanying  Statement of Revenues and Certain Expenses of
One Memorial Drive, Cambridge, Massachusetts (the "Property") for the year ended
December  31,  1997.  This  Statement  of Revenues  and Certain  Expenses is the
responsibility of the Property's management. Our responsibility is to express an
opinion on this Statement of Revenues and Certain Expenses based on our audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance  about whether the Statement of Revenues and Certain  Expenses is free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and  disclosures in the Statement of Revenues and Certain
Expenses.  An audit also includes  assessing  the basis of  accounting  used and
significant  estimates  made by  management,  as well as evaluating  the overall
presentation of the Statement of Revenues and Certain Expenses.  We believe that
our audit provides a reasonable basis for our opinion.

The accompanying Statement of Revenues and Certain Expenses was prepared for the
purpose  of  complying  with the rules and  regulations  of the  Securities  and
Exchange Commission for inclusion in Form 8-K of Cornerstone  Properties Inc. as
described  in Note 2, and is not intended to be a complete  presentation  of the
Property's revenues and expenses.

In our opinion, the Statement of Revenues and Certain Expenses referred to above
presents fairly, in all material respects,  the revenues and certain expenses as
described in Note 2 of One Memorial Drive, Cambridge, Massachusetts for the year
ended  December 31, 1997,  in  conformity  with  generally  accepted  accounting
principles.

                                                    /s/ Ernst & Young LLP

Boston, Massachusetts
June 12, 1998








                                       F-2

<PAGE>

                               One Memorial Drive
                            Cambridge, Massachusetts
                   Statement of Revenues and Certain Expenses

<TABLE>
<CAPTION>



                                                                  For the Three 
                                           For the Year               Months    
                                              Ended                Ended March  
                                            December 31,             31, 1998   
                                               1997                (unaudited)
                                         ----------------         --------------

<S>                                      <C>                      <C>
Revenues:
        Rental                             $   11,214,218          $   2,971,750
        Parking                                   888,130                201,699
        Other                                      33,488                 18,075
                                         ----------------         --------------
                                           $   12,135,836          $   3,191,524
                                         ----------------         --------------

Certain expenses:
        Real estate taxes                       1,714,077                429,714
        Other operating expenses                  848,329                266,990
        Repairs and maintenance                   641,643                144,266
        Management fees                           320,027                 75,288
        Utilities                                 277,117                 50,618
        Insurance                                  52,575                 12,671
                                         ----------------         --------------
                                          $     3,853,768          $     979,547
                                         ----------------         --------------
Revenues in excess of certain expenses    $     8,282,068          $   2,211,977
                                         ================         ==============


</TABLE>


See accompanying notes.







                                       F-3

<PAGE>



                               One Memorial Drive
                            Cambridge, Massachusetts
             Notes to the Statement of Revenues and Certain Expenses

                          Year Ended December 31, 1997

1. Business

   The  accompanying  Statement of Revenues and Certain  Expenses relates to the
   operations  of One  Memorial  Drive,  a 351,680  square foot office  building
   located  at  One  Memorial  Drive,  Cambridge,   Massachusetts.   Cornerstone
   Properties Inc. (the "Company") acquired the Property on April 28, 1998.

2. Summary of Significant Accounting Policies

   Basis of Presentation

   The accompanying  Statement of Revenues and Certain Expenses was prepared for
   the purpose of complying with the rules and regulations of the Securities and
   Exchange Commission for inclusion in the Company's Form 8-K. Accordingly, the
   statement  excludes  certain revenues and expenses that may not be comparable
   to those  expected  to be  incurred  by the  Company in the  proposed  future
   operations  of the  Property.  Items  excluded  consist of  interest  income,
   depreciation,  amortization,  capital expenditures and certain  non-operating
   expenses.

   Use of Estimates

   The  preparation  of the  Statement  of  Revenues  and  Certain  Expenses  in
   conformity with generally accepted accounting  principles requires management
   to make  estimates and  assumptions  that affect the amounts  reported in the
   Statement of Revenues and Certain  Expenses and  accompanying  notes.  Actual
   results could differ from those estimates.

   Revenue Recognition

   Rental  income   attributable  to  leasing  activities  is  recognized  on  a
   straight-line basis over the term of the non-cancelable leases.

   Capitalization Policy

   Ordinary repairs and maintenance are expensed as incurred; major replacements
   and betterments are capitalized.



                                       F-4

<PAGE>

                               One Memorial Drive
                            Cambridge, Massachusetts
             Notes to the Statement of Revenues and Certain Expenses
                                   (Continued)

2. Summary of Significant Accounting Policies (continued)

   Unaudited Information

   The Statement of Revenues and Certain Expenses for the period from January 1,
   1998 through March 31, 1998 is unaudited.  In the opinion of management,  all
   adjustments  necessary for a fair  presentation of such information have been
   made.  The  results  of  operations  for  this  period  are  not  necessarily
   indicative of future results of operations of the Property.

3. Related Party Transactions

   Management  fees of $320,027 for the year ended December 31, 1997 and $75,288
   for the period from January 1, 1998 through March 31, 1998  (unaudited)  were
   paid to an affiliate of the prior owner under a property management contract.
   Included in other operating  expenses are allocated  expenses of $349,480 for
   the year ended  December 31, 1997 and $106,836 for the period from January 1,
   1998 through March 31, 1998 (unaudited), which were paid to affiliates of the
   prior  owners  for  administrative  costs and salary  reimbursements  under a
   property management contract. Under the terms of the sale to the Company, the
   prior management  company will continue to manage the property for a term not
   less than one year from April 28, 1998.

   Rental revenue and escalation  income of $117,305 for the year ended December
   31, 1997 and $28,845 for the period from  January 1, 1998  through  March 31,
   1998  (unaudited) was received from an affiliate of the former owner under an
   operating lease.

4. Operating Leases

   The Property leases space to tenants under  operating  leases which expire at
   various  dates  through  2007.  In addition to the minimum  rentals,  certain
   leases provided for the  reimbursement of operating  expenses and real estate
   taxes in excess of fixed bases.





                                       F-5

<PAGE>

                               One Memorial Drive
                            Cambridge, Massachusetts
            Notes to the Statements of Revenues and Certain Expenses
                                   (Continued)

4. Operating Leases (continued)

   Minimum future rents,  including  amounts due from an affiliate of the former
   owners, under the terms of existing lease arrangements are as follows:

<TABLE>
<CAPTION>

                                    Year                           Amount
                                    ----                           ------
                                 <S>                          <C>
                                    1998                      $10,288,630
                                    1999                       10,356,102
                                    2000                        8,272,188
                                    2001                        8,281,452
                                    2002                        7,284,046
                                 Thereafter                    11,835,446
                                                              -----------
                                                              $56,317,864
                                                              ===========
</TABLE>


   During 1997, the Property derives a substantial  portion of its revenues from
   certain major tenants who, individually,  contribute more than ten percent of
   total revenue. These major tenants are as follows.


<TABLE>
<CAPTION>
                                                                  Percent of
                                                                Rental Revenue
                                            Percent of         for the 3 Month
                                          Rental Revenue         Period Ended
                                        for the Year Ended      March 31, 1998
                  Tenant                 December 31, 1997        (unaudited)
                  ------                 -----------------        -----------
      <S>                                       <C>                   <C>
      Putnam, Hayes & Bartlett, Inc.            20%                   19%
      Sapient Corporation                       17%                   31%
      InterSystems Corporation                  15%                   15%
      David L. Babson & Company                 10%                   12%
                                        --------------------   ----------------
                                                62%                   77%
                                        ====================   ================

</TABLE>

   Future minimum rents from  non-cancelable  leases for these major tenants are
   68% of the total of $56,317,864 at December 31, 1997.




                                       F-6

<PAGE>







                  CALIFORNIA FRONT BUILDING

                  STATEMENT OF REVENUE AND CERTAIN EXPENSES
                  AS OF DECEMBER 31, 1997
                  TOGETHER WITH REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS




















                                       F-7

<PAGE>






                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Partners of
California Front Building:

We have audited the  accompanying  Statement of Revenue and Certain  Expenses of
California  Front  Building (the Property) for the year ended December 31, 1997.
The  Statement  of Revenue and Certain  Expenses  is the  responsibility  of the
Property's  management.  Our  responsibility  is to  express  an  opinion on the
Statement of Revenue and Certain Expenses based on our audit.

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

The accompanying  Statement of Revenue and Certain Expenses was prepared for the
purpose  of  complying  with the rules and  regulations  of the  Securities  and
Exchange  Commission  for  inclusion in the Form 8-K to be filed by  Cornerstone
Properties,  Inc. as  described  in Note 2 and is not  intended to be a complete
presentation of the Property's revenue and expenses.

In our opinion,  the Statement of Revenue and Certain Expenses referred to above
presents fairly, in all material  respects,  the revenue and certain expenses of
the Property for the year ended  December 31, 1997 in conformity  with generally
accepted accounting principles.



                                                   /s/ Arthur Andersen LLP


Los Angeles, California
June 30, 1998


                                       F-8

<PAGE>

                            CALIFORNIA FRONT BUILDING

                    STATEMENT OF REVENUE AND CERTAIN EXPENSES

<TABLE>
<CAPTION>

                                                      Year           Five Months
                                                      Ended             Ended
                                                   December 31,        May 31,
                                                      1997              1998
                                                   -----------       -----------
                                                                     (Unaudited)
<S>                                                <C>               <C>
REVENUES:
    Office rent                                    $ 5,800,485       $ 2,423,050
    Parking                                            250,202           104,831
    Recoveries                                         615,313           251,427
    Other                                               47,847            17,352
                                                   -----------       -----------
    Total Revenues                                   6,713,847         2,796,660
                                                   -----------       -----------

SPECIFIC OPERATING EXPENSES:
    Building Administration                            399,210           164,971
    General Building and Grounds                       364,556           172,321
    Cleaning                                           404,828           199,919
    Security                                           140,575            60,185
    Energy                                             490,861           174,147
    Maintenance and Repairs                            194,054            57,765
    Parking                                            101,721            48,413
    Property Taxes                                     248,298           102,732
    Insurance and Other                                411,758           173,770
                                                   -----------       -----------
    
    Total Operating Expenses                         2,755,861         1,154,223
                                                   -----------       -----------

REVENUE IN EXCESS OF CERTAIN EXPENSES              $ 3,957,986       $ 1,642,437
                                                   ===========       ===========


</TABLE>




         The accompanying notes are an integral part of this statement.


                                       F-9

<PAGE>

                        CALIFORNIA FRONT BUILDING COMPANY

                    STATEMENT OF REVENUE AND CERTAIN EXPENSES

                                DECEMBER 31, 1997
                                -----------------

1.   BUSINESS

     Description of Property
     -----------------------

     The  accompanying  Statement of Revenue and Certain Expenses relates to the
     operations of California  Front Building (the Property).  The Property is a
     commercial  building  totaling  approximately  240,230 rentable square feet
     located in San Francisco, California.

2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Basis of Presentation
     ---------------------

     The  accompanying  Statement  of Revenue and Certain  Expenses for the year
     ended December 31, 1997, was prepared for the purpose of complying with the
     rules  and  regulations  of the  Securities  and  Exchange  Commission  for
     inclusion in the Form 8-K to be filed by Cornerstone  Properties  Inc.. The
     statement is not  representative  of the actual  operations of the Property
     for the period  presented nor  indicative  of future  operations as certain
     expenses, primarily depreciation, amortization and interest expenses, which
     may not be  comparable  to the  expenses  expected to be incurred in future
     operations of the Property, have been excluded.

     Revenue and Expense Recognition
     -------------------------------

     Revenue is  recognized  when due under the terms of the  respective  office
     leases. This revenue recognition policy approximates revenue recognition on
     a  straight  line  basis over the terms of the  respective  office  leases.
     Parking revenue is recognized as collected.

     Use of Estimates
     ----------------

     The  preparation  of the  Statement  of Revenue  and  Certain  Expenses  in
     conformity  with  generally   accepted   accounting   principles   requires
     management  to make  estimates  and  assumptions  that affect the  reported
     amounts of  revenues  and  expenses  during the  reporting  period.  Actual
     results could differ from those estimates.

3.   RECOVERIES

     The  Partnership has entered into tenant leases that provide for tenants to
     share in the operating  expenses and real estate taxes on a pro rata basis,
     as defined.



                                      F-10

<PAGE>

4.   FUTURE MINIMUM RENTAL RECEIPTS

     Future minimum rental receipts due on  noncancelable  operating  leases for
     the Property as of December 31, 1997 were as follows:

<TABLE>
                       <S>                   <C>
                           1998               $  5,738,000
                           1999                  5,540,000
                           2000                  3,192,000
                           2001                  3,191,000
                           2002                  2,248,000
                       Thereafter                1,268,000
                                              ------------
                                              $ 21,177,000
                                              ============
</TABLE>


     The above  amounts do not  include  additional  rental  receipts  that will
     become  due as a result  of the  recovery  provisions  in the  leases.  The
     Property  is  subject  to the  usual  business  risks  associated  with the
     collection of the above scheduled rents.

5.   SIGNIFICANT TENANTS

     The  three  largest  tenants  of the  Property  made up 32%,  24% and  16%,
     respectively  of rental income in 1997. The leases for these tenants expire
     in 2003, 1999 and 2001, respectively.

6.   RELATED PARTY TRANSACTIONS

     During the year ended  December  31,  1997,  the Property was managed by an
     affiliated  party  to the  seller.  The  management  fee was  approximately
     $168,000  for  1997.  In  addition,   this  party  leased  space  and  paid
     approximately $29,000 of rent in 1997.







                                      F-11

<PAGE>







              WILSHIRE PALISADES BUILDING

              STATEMENT OF REVENUE AND CERTAIN EXPENSES
              AS OF JUNE 30, 1997
              TOGETHER WITH REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
















                                      F-12

<PAGE>



                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS




To the Owners of
Wilshire Palisades Building:

We have audited the  accompanying  Statement of Revenue and Certain  Expenses of
Wilshire Palisades Building (the Property) for the year ended June 30, 1997. The
Statement  of  Revenue  and  Certain  Expenses  is  the  responsibility  of  the
Property's  management.  Our  responsibility  is to  express  an  opinion on the
Statement of Revenue and Certain Expenses based on our audit.

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

The accompanying  Statement of Revenue and Certain Expenses was prepared for the
purpose  of  complying  with the rules and  regulations  of the  Securities  and
Exchange  Commission  for  inclusion in the Form 8-K to be filed by  Cornerstone
Properties,  Inc. as  described  in Note 2 and is not  intended to be a complete
presentation of the Property's revenue and expenses.

In our opinion,  the Statement of Revenue and Certain Expenses referred to above
presents fairly, in all material  respects,  the revenue and certain expenses of
the  Property  for the year ended June 30,  1997 in  conformity  with  generally
accepted accounting principles.



                                                   /s/ Arthur Andersen LLP


Los Angeles, California
June 30, 1998




                                      F-13


<PAGE>

                           WILSHIRE PALISADES BUILDING
                           ---------------------------

                    STATEMENT OF REVENUE AND CERTAIN EXPENSES
<TABLE>
<CAPTION>

                                                          Year     Eleven Months
                                                         Ended         Ended
                                                        June 30,      May 31,
                                                          1997         1998
                                                       ----------  -------------

                                                                     (Unaudited)
<S>                                                  <C>               <C>
REVENUES:
     Rental revenue including operating
          expense recoveries                          $7,619,851      $6,498,673
     Parking                                             504,509         444,737
     Other                                               130,787          34,103
                                                      ----------      ----------
                                                                                
     Total Revenues                                    8,255,147       6,977,513
                                                      ----------      ----------

SPECIFIC OPERATING EXPENSES:
     General Building                                    315,487         302,271
     Building Administration                             413,365         359,794
     Utilities                                           470,692         416,973
     Maintenance and Repairs                             245,776         182,716
     Parking                                              85,402          72,626
     Cleaning                                            180,680         189,830
     Security                                            186,749         190,222
     Insurance                                           166,827         187,714
     Property Taxes                                      423,659         384,604
                                                      ----------      ----------

     Total Operating Expenses                          2,488,637       2,286,750
                                                      ----------      ----------

REVENUE IN EXCESS OF CERTAIN EXPENSES                 $5,766,510      $4,690,763
                                                      ==========      ==========

</TABLE>








          The accompanying notes are an integral part of this statement.

                                      F-14


<PAGE>



                           WILSHIRE PALISADES BUILDING
                           ---------------------------

                    STATEMENT OF REVENUE AND CERTAIN EXPENSES

                                  JUNE 30, 1997
                                  -------------

1.   BUSINESS:

     Description of Property
     -----------------------

     The  accompanying  Statement of Revenue and Certain Expenses relates to the
     operations of Wilshire Palisades  Building (the Property).  The Property is
     an eleven-story commercial office building, a subterranean parking facility
     and  the  land  on  which  they  are  situated  located  in  Santa  Monica,
     California.

2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Basis of Presentation
     ---------------------

     The  accompanying  Statement  of Revenue and Certain  Expenses for the year
     ended June 30,  1997 was  prepared  for the purpose of  complying  with the
     rules  and  regulations  of the  Securities  and  Exchange  Commission  for
     inclusion in the Form 8-K to be filed by Cornerstone  Properties  Inc.. The
     statement is not  representative  of the actual  operations of the Property
     for the period  presented nor  indicative  of future  operations as certain
     expenses, primarily depreciation, amortization and interest expenses, which
     may not be  comparable  to the  expenses  expected to be incurred in future
     operations of the Property, have been excluded.

    Revenue and Expense Recognition
    -------------------------------

     Revenue is  recognized  when due under the terms of the  respective  office
     leases. This revenue recognition policy approximates revenue recognition on
     a  straight  line  basis over the terms of the  respective  office  leases.
     Parking revenue is recognized as collected.

     Use of Estimates
     ----------------

     The  preparation  of the  Statement  of Revenue  and  Certain  Expenses  in
     conformity  with  generally   accepted   accounting   principles   requires
     management  to make  estimates  and  assumptions  that affect the  reported
     amounts of  revenues  and  expenses  during the  reporting  period.  Actual
     results could differ from those estimates.

3.   RECOVERIES

     The  Property  has entered  into tenant  leases that provide for tenants to
     share in the operating  expenses and real estate taxes on a pro rata basis,
     as defined.





                                      F-15


<PAGE>



4.   FUTURE MINIMUM RENTAL RECEIPTS

     Future minimum rental receipts due on  noncancelable  operating  leases for
     the Property as of June 30, 1997 were as follows:

<TABLE>
<CAPTION>
                               <S>                 <C>
                           1998               $  6,568,000
                           1999                  6,922,000
                           2000                  6,862,000
                           2001                  6,633,000
                           2002                  2,649,000
                           Thereafter              447,000
                                              ------------
                                              $ 30,081,000
                                              ============

</TABLE>


     The above  amounts do not  include  additional  rental  receipts  that will
     become  due as a result  of the  recovery  provisions  in the  leases.  The
     Property  is  subject  to the  usual  business  risks  associated  with the
     collection of the above scheduled rents.

5.   SIGNIFICANT TENANTS

     For the fiscal year ended June 30, 1997,  approximately 55.8 percent of the
     Property's  base rent revenues and operating  expense  reimbursements  were
     generated by three tenants. The leases for these tenants expire in 2001 and
     2002.  Another  10% of rental  revenue was  generated  by the base rent and
     termination  fee paid by a tenant who  terminated  its lease during  fiscal
     year 1997.

6.   RELATED-PARTY TRANSACTIONS

     During  the year  ended  June 30,  1997,  the  Property  was  managed by an
     affiliated  party  to the  seller.  The  management  fee is  based on 2-1/2
     percent of gross income, including rentals, parking and other revenues. The
     management  fee  for the  year  ended  June  30,  1997  was  $206,000.  The
     affiliated  party also leased office space.  During the year ended June 30,
     1997, rent under the lease was approximately $94,000.

     During the year ended June 30, 1997,  the Property  leased  office space to
     another affiliated party of the seller. Rental revenue under this lease was
     approximately $188,000 for 1997.












                                      F-16


<PAGE>


                  CORNERSTONE PROPERTIES INC. AND SUBSIDIARIES
                   UNAUDITED PRO FORMA CONDENSED CONSOLIDATED
                              FINANCIAL STATEMENTS

The following  unaudited  condensed  consolidated pro forma statements of income
give effect to the DIHC Acquisition,  Cornerstone's offerings of Common Stock in
April 1997 and February 1998, the conversion of Cornerstone's 8% Preferred Stock
and 8% Preferred Stock,  Series A into Cornerstone  Common Stock,  Cornerstone's
repayment of a $32,500,000  term loan from Deutsche Bank and the  acquisition of
six properties and sale of one property in 1997 and 1998 as if they had occurred
January  1,  1997.  A  condensed  consolidated  pro forma  balance  sheet is not
included as the  aforementioned  transactions  occurred before June 30, 1998 and
are reflected in the historical condensed consolidated balance sheet.

The pro forma  condensed  consolidated  statements of income are not necessarily
indicative  of  results  of   operations   that  would  have  resulted  had  the
aforementioned transactions been consummated at the date indicated, nor are they
intended to project Cornerstone's results of operations for any future period or
date. The unaudited pro forma condensed consolidated statements of income should
be read in  connection  with the audited and unaudited  financial  statements of
Cornerstone filed with the Securities and Exchange Commission.




















                                      F-17


<PAGE>


                  CORNERSTONE PROPERTIES INC. AND SUBSIDIARIES
                      CONDENSED CONSOLIDATED BALANCE SHEET
                               AS OF JUNE 30, 1998
                             (Amounts in thousands)
                                   (UNAUDITED)


<TABLE>
<CAPTION>

                                                         (1)
                                                      Historical
                                                     Cornerstone
                                                     -----------
<S>                                                  <C>
Assets
     Real estate investments                          $2,549,865
     Less: Accumulated depreciation                      256,003
                                                     -----------
     Real estate investments, net                      2,293,862
     Other assets                                        183,007
                                                     -----------
     Total assets                                     $2,476,869
                                                     ===========
Liabilities
     Long term debt                                   $  849,196
     Other liabilities                                   138,774
                                                     -----------
     Total liabilities                                   987,970
                                                     -----------

Minority interest in operating partnership                55,934
Minority interest in real estate joint ventures           15,015

Stockholders' investment                               1,417,950
                                                     -----------
Total Liabilities and Stockholders' investment        $2,476,869
                                                     ===========


</TABLE>







         The accompanying notes are an integral part of this statement

                                      F-18

<PAGE>
<TABLE>
<CAPTION>

                                            CORNERSTONE PROPERTIES INC. AND SUBSIDIARIES
                                        CONDENSED CONSOLIDATED PRO FORMA STATEMENT OF INCOME
                                            FOR THE TWELVE MONTHS ENDED DECEMBER 31, 1997
                                            (Amounts in thousands, except per share data)
                                                             (UNAUDITED)





                                                                          (2)
                                                      Historical        Property          Other           Pro Forma
                                                      Cornerstone     Transactions     Adjustments       Cornerstone
                                                      --------------------------------------------------------------
<S>                                                     <C>            <C>             <C>                <C>
Revenues
       Office and parking rentals                       $ 159,828      $ 160,371       $    -             $ 320,199
       Equity in earnings of unconsolidated entities          -           (2,540)           -                (2,540)
       Interest and other income                           14,083         23,948         (7,486) (3)         30,545
                                                      --------------------------------------------------------------
           Total Revenues                                 173,911        181,779         (7,486)            348,204
                                                      --------------------------------------------------------------

Expenses
       Building operating expenses                         61,522         57,484            -               119,006
       Interest expense                                    33,977         30,306         (1,234) (4)         63,049
       Depreciation and amortization                       30,978         25,323            -                56,301
       General and administrative                           7,564            -              -                 7,564
                                                      --------------------------------------------------------------
           Total Expenses                                 134,041        113,113         (1,234)            245,920
                                                      --------------------------------------------------------------

Other income (expenses)
      Net gain on interest rate swap                           99            -              -                    99
      Minority interest in operating partnership              -              -           (3,745) (5)         (3,745)
      Minority interest in real estate joint ventures      (2,368)        (1,762)           -                (4,130)
                                                      --------------------------------------------------------------
Income (loss) before extraordinary loss                    37,601         66,904         (9,998)             94,507
Extraordinary Loss                                            (54)           -              -                   (54)
                                                      --------------------------------------------------------------
Net Income (Loss)                                          37,547         66,904         (9,998)             94,453
Preferred Dividends                                        10,160            -           (6,660) (6)          3,500
                                                      --------------------------------------------------------------
Income available for Common Stockholders                $  27,387      $  66,904       $ (3,338)          $  90,953
                                                      ==============================================================

Income Before Extraordinary
Loss per Share                                          $    0.63                                         $    0.90
                                                      ===========                                         =========
Income per Share (Basic and Diluted)                    $    0.63                                         $    0.90
                                                      ===========                                         =========
Weighted Shares Outstanding-Basic                          43,572                                           100,681
                                                      ===========                                         =========
Weighted Shares Outstanding-Diluted                        43,808                                           100,917
                                                      ===========                                         =========







                                    The accompanying notes are an integral part of this statement

</TABLE>


                                                                F-19


<PAGE>

<TABLE>
<CAPTION>



                                            CORNERSTONE PROPERTIES INC. AND SUBSIDIARIES
                                        CONDENSED CONSOLIDATED PRO FORMA STATEMENT OF INCOME
                                               FOR THE SIX MONTHS ENDED JUNE 30, 1998
                                            (Amounts in thousands, except per share data)
                                                             (UNAUDITED)



                                                                           (7)
                                                        Historical      Property         Other            Pro Forma
                                                        Cornerstone   Transactions    Adjustments        Cornerstone
                                                        ------------------------------------------------------------
<S>                                                     <C>            <C>             <C>                <C>
Revenues
       Office and parking rentals                       $ 156,540      $  10,292       $    -             $ 166,832
       Equity in earnings of unconsolidated entities       (2,688)           -              -                (2,688)
       Interest and other income                           14,194            455           (423) (8)         14,226
                                                        ------------------------------------------------------------
           Total Revenues                                 168,046         10,747           (423)            178,370
                                                        ------------------------------------------------------------
Expenses
       Building operating expenses                         56,917          3,144            -                60,061
       Interest expense                                    31,667          2,225         (2,334) (9)         31,558
       Depreciation and amortization                       26,859          1,999            -                28,858
       General and administrative                           5,544            -              -                 5,544
                                                        ------------------------------------------------------------
           Total Expenses                                 120,987          7,368         (2,334)            126,021
                                                        ------------------------------------------------------------

Other income (expenses)
      Loss on sale of real estate assets                   (2,197)         1,985            -                  (212)
      Minority interest in operating partnership             (646)           -           (2,028)(10)         (2,674)
      Minority interest in real estate joint ventures      (2,210)           -              -                (2,210)
                                                        ------------------------------------------------------------
Net Income (Loss)                                          42,006          5,364           (117)             47,253
Preferred Dividends                                         1,750            -              -                 1,750
                                                        ------------------------------------------------------------
Income available for Common Stockholders                $  40,256      $   5,364       $   (117)          $  45,503
                                                        ============================================================

Income per Share                                        $    0.42                                         $    0.45
                                                        =========                                         =========
Diluted Income per Share                                $    0.42                                         $    0.45
                                                        =========                                         =========
Weighted Shares Outstanding-Basic                          96,653                                           101,411
                                                        =========                                         =========
Weighted Shares Outstanding-Diluted                        96,984                                           101,742
                                                        =========                                         =========




                                    The accompanying notes are an integral part of this statement

</TABLE>


                                                                F-20



<PAGE>



                  CORNERSTONE PROPERTIES INC. AND SUBSIDIARIES
                    NOTES TO PRO FORMA CONDENSED CONSOLIDATED
                              FINANCIAL STATEMENTS

(1)  A condensed consolidated pro forma balance sheet is not included as the pro
     forma  transactions  occurred before June 30, 1998 and are reflected in the
     historical condensed consolidated balance sheet.

(2)  To reflect the historical operations and pro forma adjustments for interest
     and  depreciation  expense  of the  following  properties  for the  periods
     indicated:

<TABLE>
<CAPTION>

     Property                           Period                  Date Purchased
     ------------------------           ------------------      --------------
     <S>                                <C>                     <C>
     DIHC Acquisition                   1/1/97-10/26/97         10/27/97
     527 Madison Avenue                 1/1/97-2/13/97          2/14/97
     Sixty State Street                 1/1/97-12/30/97         12/31/97
     Corporate 500 Centre               1/1/97-12/31/97         1/29/98
     One Memorial Drive                 1/1/97-12/31/97         4/28/98
     201 California Street              1/1/97-12/31/97         6/3/98
     Wilshire Palisades                 1/1/97-12/31/97         6/3/98

</TABLE>

     In addition,  this reflects the elimination of income and expenses from the
     Frick  building from 1/1/97 to 12/31/97.  The Frick  building is assumed to
     have been sold 1/1/97.

     The pro forma  adjustments for  depreciation and interest expense are based
     on the following assumptions:

     The depreciable  real estate assets of the property  acquisitions are being
     depreciated on a straight-line basis over a 40 year useful life. 20% of the
     real estate value has been allocated to land.

     Details of the debt assumed or used in financing the property  acquisitions
     are as follows:

<TABLE>
<CAPTION>

                                         Fair market            Weighted average
     Property                           Value of debt             Interest rate
     -------------------------     -----------------------      ----------------
     <S>                                <C>                          <C>
     DIHC Acquisition                   $250,000,000                 7.45%
     Sixty State Street                  $89,629,000                 6.84%
     Corporate 500 Centre                $80,000,000                 6.63%
     201 California Street               $33,292,000                 6.70%
     Wilshire Palisades                  $31,319,000                 6.70%

</TABLE>

(3)  To eliminate  interest  income (5.5% average  interest rate) earned on cash
     proceeds from  Cornerstone's  April, 1997 common stock offering presumed to
     be utilized to fund Property acquisitions

(4)  To reflect the  elimination  of interest  expense  for the  repayment  of a
     $32,500,000 loan from Deutsche Bank in March 1997, as if it had occurred on
     January 1, 1997 and the  elimination  of all  interest  expense  related to
     temporary credit line financing used in the property  acquisitions.  Credit
     line financing was obtained at an average rate of 6.9%.

(5)  To reflect the pro forma minority  unitholders'  weighted interest (3.95%)
     in the operating  partnership's net income for the year ended December 31,
     1997.


                                      F-21


<PAGE>

(6)  To reflect  the  conversion  of  Cornerstone's  8%  Preferred  Stock and 8%
     Preferred  Stock,  Series  A into  11,482,760  common  shares  as if it had
     occurred on January 1, 1997.

(7)  To reflect the historical operations and pro forma adjustments for interest
     and  depreciation  expense  of the  following  properties  for the  periods
     indicated:

<TABLE>
<CAPTION>

     Property                           Period                  Date Purchased
     -------------------------     -----------------------      ----------------
     <S>                                <C>                     <C>
     Corporate 500 Centre               1/1/98-1/28/98          1/29/98
     One Memorial Drive                 1/1/98-4/27/98          4/28/98
     201 California Street              1/1/98-6/2/98           6/3/98
     Wilshire Palisades                 1/1/98-6/2/98           6/3/98

</TABLE>

     In addition,  this reflects the elimination of income and expenses from the
     Frick  building  from 1/1/98 to 4/23/98.  The Frick  building is assumed to
     have been sold 1/1/97.

     The pro forma  adjustments for  depreciation and interest expense are based
     on the following assumptions:

     The depreciable  real estate assets of the property  acquisitions are being
     depreciated on a straight-line basis over a 40 year useful life. 20% of the
     real estate value has been allocated to land.

     Details of the debt assumed or used in financing the property  acquisitions
     are as follows:

<TABLE>
<CAPTION>

                                         Fair market            Weighted average
     Property                           Value of debt            Interest rate
     -------------------------     -----------------------      ----------------
     <S>                                <C>                           <C>
     Corporate 500 Centre               $80,000,000                   6.63%
     201 California Street              $33,292,000                   6.70%
     Wilshire Palisades                 $31,319,000                   6.70%

</TABLE>

(8)  To eliminate  interest  income (5.5% average  interest rate) earned on cash
     proceeds from Cornerstone's  February,  1998 common stock offering presumed
     to be utilized to fund Property acquisitions.

(9)  To reflect  the  elimination  of  interest  expense  and  deferred  finance
     amortization  related  to  temporary  credit  line  financing  used  in the
     property  acquisitions.  Credit line  financing  was obtained at an average
     rate of 6.9%.

(10) To reflect the pro forma minority unitholders' weighted interest (3.93%) in
     the  operating  partnership's  net income for the six months ended June 30,
     1998.


                                      F-22

<PAGE>


                                                                  EXHIBIT 99.1

                                         Cornerstone Properties Inc.
                                         126 East 56th Street
                                         New York, NY  10022
                                         (NYSE: CPP)




AT CORNERSTONE PROPERTIES                AT THE FINANCIAL RELATIONS BOARD
- -------------------------                --------------------------------

Kevin P. Mahoney                         Julie Gottlieb   Stephanie Mishra
Chief Financial Officer                  (General Info)   (Analyst Info)
(212) 605-7101                           (212) 661-8030   (415) 986-1591

Karin Mass                               Judith Sylk-Siegel
VP, Investor Relations                   (Media Info)
(212) 605-7113                           (212) 661-8030


FOR IMMEDIATE RELEASE
- ---------------------
April 27, 1998

                           CORNERSTONE PROPERTIES INC.
                 TO ACQUIRE ONE MEMORIAL DRIVE IN CAMBRIDGE, MA

New York, NEW YORK (April 27, 1998) -- Cornerstone  Properties  Inc.  (NYSE:CPP)
announced it has reached a definitive  agreement for the  acquisition  of a 100%
fee  interest in One Memorial  Drive,  the premier  office  building in Boston's
prestigious Cambridge  sub-market,  for $111.3 million. The Company will finance
the acquisition with the issue of $60 million in common stock and $29 million of
UPREIT units.  The remaining  $22.3 million will be funded through the Company's
credit  facility with BT Alex Brown and Chase  Manhattan  Bank. The  partnership
between  developer  Congress Group  Ventures,  David A. Gardiner and PRISA II, a
fund  managed by  Prudential  Real  Estate  Investors  that  currently  owns One
Memorial  Drive,  will be  dissolved  after  the  transfer  of the  property  to
Cornerstone;    and   the   individual    partners   will   become   Cornerstone
unitholders/shareholders.

The  property  has a  unique  situation  on  the  banks  of the  Charles  River,
immediately  adjacent  to  the  Massachusetts  Institute  of  Technology  (MIT).
Completed in 1987,  the building is 17 stories high with 353,000  square feet of
net rentable area and includes 450 parking spaces. With a distinctive five-sided
shape,  the  building is of  first-class  quality and design.  Each floor offers
unobstructed  views of both the  Charles  River  and the  Back  Bay's  Financial
District.  It is 99% leased to high- quality  tenants with a popular  restaurant
located in the building's  lobby.  The building  serves as the  headquarters  of
Sapient Corporation, a respected information technology consultancy and software
development company.

Commenting on the  acquisition,  Barry McGowan,  Cornerstone  Properties'  Chief
Investment  Officer said,  "This  acquisition is a tremendous  complement to our
existing portfolio.  It further establishes  Cornerstone as the owner of some of
the highest quality office buildings in Boston's premier urban sub-markets:  the
Financial District (Sixty State Street and 125 Summer Street), the Back Bay (500
Boylston Street and 222 Berkeley  Street) and now Cambridge.  This was a typical
Cornerstone deal: we had identified One Memorial Drive as an acquisition  target
prior to the ownership's  decision to sell. We entered into negotiations  before
the deal became widely marketed and the  attractiveness of Cornerstone  currency
allowed us to negotiate an agreement that will provide accretive returns."




<PAGE>


Roger  Pratt,  Portfolio  Manager  for  PRISA  II,  added,  "While  PRISA II has
completed  property-for-stock  transactions with hotel and apartment  companies,
this is PRISA II's first such  transaction with an office REIT. We are attracted
to the high  quality of  Cornerstone's  portfolio,  and are  confident  that the
investment in  Cornerstone  stock will produce  attractive  returns for PRISA II
investors."

Cornerstone Properties Inc. is a self-administered equity real estate investment
trust (REIT) investing exclusively in Class A quality office properties in prime
locations  in major  metropolitan  areas and  central  business  districts.  The
Company,  through its  subsidiaries,  currently  owns 19 Class A quality  office
properties  throughout the United States  totaling 10.9 million  rentable square
feet.  Headquartered  in New York City, the Company's stock is traded on the New
York Stock Exchange under the ticker symbol CPP.


With the exception of the historical  information  contained in the release, the
matters  described  herein  contain  forward-looking  statements  that  are made
pursuant to the Safe Harbor  provisions  of the  Private  Securities  Litigation
Reform  Act of 1995.  Forward-looking  statements  involve  a number  of  risks,
uncertainties  or other  factors  beyond the  Company's  control which may cause
material differences in actual results, performance or other expectations. These
factors  include,  but are not  limited  to,  those  detailed  in the  Company's
registration statement and periodic reports filed with the Securities & Exchange
Commission.

      For more information on Cornerstone Properties via fax at no charge,
             please dial 1-800-PRO-INFO and enter ticker symbol CPP
     or visit Cornerstone Properties' web site at http://www.cstoneprop.com

                                       ###










<PAGE>


                                                                  EXHIBIT 99.2

                                         Cornerstone Properties Inc.
                                         126 East 56th Street
                                         New York, NY  10022
                                         (NYSE: CPP)
                                                                                
                                                                                
                                                                                
                                                                                
AT CORNERSTONE PROPERTIES                AT THE FINANCIAL RELATIONS BOARD       
- -------------------------                --------------------------------       
                                                                                
Rod Dimock                               Julie Gottlieb   Stephanie Mishra      
Chief Operating Officer                  (General Info)   (Analyst Info)        
(212) 605-7114                           (212) 661-8030   (415) 986-1591        
                                                                                
Karin Mass                               Judith Sylk-Siegel                     
VP, Investor Relations                   (Media Info)                           
(212) 605-7113                           (212) 661-8030                         
986-1591      (212) 661-8030


FOR IMMEDIATE RELEASE
- ---------------------
February 25, 1998

                CORNERSTONE PROPERTIES INC. ACQUIRES INTEREST IN
                        TWO CALIFORNIA OFFICE PROPERTIES

           Acquisitions Provide Entree into Target California Markets

New York, NEW YORK (February 25, 1998) -- Cornerstone Properties Inc. (NYSE:CPP)
announced  today  that it has  signed a Letter  of Intent  to  purchase  a joint
venture interest in two Class A office buildings for just under $60 million. The
remaining owners, Dutch investment group Noro and California real estate manager
and  developer  Bill  Tooley,  will have the right to  convert  their  remaining
interest into UPREIT units.  Tooley & Company,  which  originally  developed the
properties,  will continue to manage and lease each  building.  The terms of the
pending transaction were not disclosed.

The properties,  Wilshire  Palisades and 201 California  Street,  are both first
class office  buildings in two highly sought after  California  submarkets  with
significant  barriers  to  entry,  consistent  with  the  Company's  acquisition
criteria.

Wilshire  Palisades  is an  irreplaceable  Class A,  eleven-story  office  tower
located in Santa Monica,  California with unobstructed views of both the Pacific
Ocean and the Santa Monica  Mountains.  It comprises  186,320 square feet of net
rentable area and is 99.7% leased to highly regarded tenants. Wilshire Palisades
consistently commands the highest rental rates in the Los Angeles area.

201 California Street is a seventeen-story  office tower located in the heart of
the San Francisco Financial District,  regarded by many as the strongest Central
Business District market in the country.  The building  comprises 229,825 square
feet of office space and 10,405  square feet of retail space and is 100% leased.
The  investment  offers  significant  upside  potential  as all of the  existing
below-market leases expire between the end of 1999 and 2003.

These  acquisitions  provide  Cornerstone  Properties  Inc.  with  an  immediate
presence in two key target  markets,  consistent  with the  Company's  long-term
strategy of becoming the premier  national office REIT. Both the Noro and Tooley
entities  have  similar  conservative  long-term  goals  and  objectives  as the
Company.  Chairman  and CEO of  Cornerstone  Properties  Inc.,  Mr.  John Moody,
commented,  "This acquisition fits well with our  relationship-based  investment
strategy as well as  providing  us with an initial  presence  in the  California
marketplace."




<PAGE>


Cornerstone Properties Inc. is a self-administered equity real estate investment
trust (REIT) investing exclusively in Class A quality office properties in prime
locations  in major  metropolitan  areas and  central  business  districts.  The
Company,  through its  subsidiaries,  currently  owns 19 Class A quality  office
properties  throughout the United States  totaling 10.9 million  rentable square
feet.  Headquartered  in New York City, the Company's stock is traded on the New
York Stock Exchange under the ticker symbol CPP.

With the exception of the historical  information  contained in the release, the
matters  described  herein  contain  forward-looking  statements  that  are made
pursuant to the Safe Harbor  provisions  of the  Private  Securities  Litigation
Reform  Act of 1995.  Forward-looking  statements  involve  a number  of  risks,
uncertainties  or other  factors  beyond the  Company's  control which may cause
material differences in actual results, performance or other expectations. These
factors  include,  but are not  limited  to,  those  detailed  in the  Company's
registration statement and periodic reports filed with the Securities & Exchange
Commission.

                                       ###

  For more information on Cornerstone Properties via fax at no charge, please
                dial 1-800-PRO-INFO and enter ticker symbol CPP
     or visit Cornerstone Properties' Web site at http://www.cstoneprop.com




<PAGE>


                                                                  EXHIBIT 99.3

                                         Cornerstone Properties Inc.
                                         126 East 56th Street
                                         New York, NY  10022
                                         (NYSE: CPP)
                                                                                
                                                                                
                                                                                
                                                                                
AT CORNERSTONE PROPERTIES                AT THE FINANCIAL RELATIONS BOARD       
- -------------------------                --------------------------------       
                                                                                
Rod Dimock                               Julie Gottlieb   Stephanie Mishra      
President, COO                           (General Info)   (Analyst Info)        
(212) 605-7114                           (212) 661-8030   (415) 986-1591        
                                                                                
Karin Mass                               Judith Sylk-Siegel                     
VP, Investor Relations                   (Media Info)                           
(212) 605-7113                           (212) 661-8030                         


FOR IMMEDIATE RELEASE
- ---------------------
June 9, 1998

                   CORNERSTONE PROPERTIES INC. CLOSES ON 100%
            FEE SIMPLE INTEREST IN TWO CALIFORNIA OFFICE PROPERTIES

      Previously Announced Joint Venture Stake Increased to 100% Ownership

New York, NEW YORK (June 9, 1998) -- Cornerstone  Properties  Inc.  (NYSE:  CPP)
announced  today that it had closed on a 100% fee interest in two Class A office
buildings  from Dutch  investment  group Noro and a  partnership  controlled  by
California  real  estate  manager and  developer  Bill  Tooley.  The closing was
accomplished  via  assumption  of debt,  use of cash and the  exchange of UPREIT
units.

The Company had  initially  announced in late  February that it had entered into
negotiations for the purchase of a joint venture interest in both buildings. The
properties,  Wilshire  Palisades and 201 California Street, are both first class
office  buildings  in  two  highly  sought-after   California   submarkets  with
significant  barriers  to  entry,  consistent  with  the  Company's  acquisition
criteria.

Cornerstone Properties Inc. is a self-administered equity real estate investment
trust (REIT) investing exclusively in Class A quality office properties in prime
locations  in major  metropolitan  areas and  central  business  districts.  The
Company,  through its  subsidiaries,  currently  owns 21 Class A quality  office
properties  throughout  the United States  totaling  approximately  11.5 million
rentable  square feet.  Headquartered  in New York City, the Company's  stock is
traded on the New York Stock Exchange under the ticker symbol CPP.

With the exception of the historical  information  contained in the release, the
matters  described  herein  contain  forward-looking  statements  that  are made
pursuant to the Safe Harbor  provisions  of the  Private  Securities  Litigation
Reform  Act of 1995.  Forward-looking  statements  involve  a number  of  risks,
uncertainties  or other  factors  beyond the  Company's  control which may cause
material differences in actual results, performance or other expectations. These
factors  include,  but are not  limited  to,  those  detailed  in the  Company's
registration statement and periodic reports filed with the Securities & Exchange
Commission.

                                       ###

           To receive more information on Cornerstone Properties, via
                     fax at no charge, dial 1-800-PRO-INFO
   and enter ticker symbol CPP, or visit Cornerstone Properties' web site at
                               www.cstoneprop.com






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