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

                                   FORM 8-K/A

                           AMENDMENT TO CURRENT REPORT

                Current Report Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934

         Date of report (date of earliest event reported): April 9, 2003

                          MISSION WEST PROPERTIES, INC.
             (Exact name of registrant as specified in its charter)

          Maryland            Commission File Number:            95-2635431
          --------                    1-8383                     ----------
(State or other jurisdiction                                  (I.R.S. Employer
      of incorporation)                                        Identification)


                10050 Bandley Drive, Cupertino, California 95014
                    (Address of principal executive offices)

                                 (408) 725-0700
              (Registrant's telephone number, including area code)




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




Mission West Properties,  Inc. (the "Company")  hereby amends its Current Report
on Form 8-K  dated  April  9,  2003,  filed  with the  Securities  and  Exchange
Commission  on April  23,  2003,  to amend  Item 7 in its  entirety  to  include
required  financial  statements,  pro  forma  information,  additional  required
information and certain exhibits.

Certain  responses  to the items in this  Amendment  to Current  Report  contain
forward-looking  statements.  Such  statements  can be  identified by the use of
forward-looking terminology such as "will", "anticipate",  "estimate", "expect",
"intends",  or similar  words.  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, the Company's  future operating
results for the acquired properties, and other factors detailed in the Company's
registration  statements,  and periodic filings with the Securities and Exchange
Commission.

ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS.

(a)  Financial statements and additional  information  specified by Rule 3-14 of
     Regulation S-X.

     (1)  Historical  Summary of Gross Income and Direct  Operating  Expenses of
          the San Tomas  Technology  Park for the three  months  ended March 31,
          2003 (unaudited) and for the year ended December 31, 2002.

     (2)  Additional Information.

               The San Tomas  Technology Park (the "Property") is located in the
          portion of the San Francisco  Bay Area known as "Silicon  Valley." All
          the Company's R&D  properties are located in the Silicon  Valley,  and
          the  Company's  management  considered  current  rental and  occupancy
          rates,  competition,  operating expenses and other relevent factors in
          making the  Company's  decision  to acquire  the  Property.  Financial
          information  about the Property is set forth in the Current  Report on
          Form 8-K  dated  April 9,  2003  (the  "Initial  Report")  and in this
          Amendment to Current Report.

               After  reasonable  inquiry,  the  Company  is  not  aware  of any
          material  factors  relating to the Property other than those discussed
          in the Initial Report, the financial  information provided in response
          to  Item 7 in  this  Amendment  to  Current  Report,  and  information
          disclosed in periodic reports filed by the Company with the Securities
          and  Exchange  Commission,  that would  cause the  reported  financial
          information  for the  Property  not to be  necessarily  indicative  of
          future operating results.

(b)  Pro Forma Financial Information.

     Pro  Forma  Condensed  Consolidated  Balance  Sheet  as of March  31,  2003
     (unaudited).

     Pro Forma  Condensed  Consolidated  Statements of Operations  for the three
     months ended March 31, 2003 (unaudited) and for the year ended December 31,
     2002 (unaudited).

(c)  Exhibits.


Exhibit No.                Description
-----------                -------------------------------
10.44                      Agreement of Purchase and Sale*
23.1                       Consent of Ernst & Young LLP


----------------------------------------
*Previously  filed as an exhibit to Current  Report on Form 8-K,  dated April 9,
2003.




                                   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 hereunto duly authorized.


                                        MISSION WEST PROPERTIES, INC.

Date: June 20, 2003                     By: /s/ Wayne N. Pham
                                        ---------------------------------------
                                        Wayne N. Pham
                                        Vice President of Finance and Controller


                                     - 2 -



                        Report of Independent Accountants

The Board of Directors and Stockholders of
Mission West Properties, Inc.:

We have audited the accompanying  Historical  Summary of Gross Income and Direct
Operating  Expenses  (the  "Statement")  of the San Tomas  Technology  Park (the
"Property")  for the  year  ended  December  31,  2002.  This  Statement  is the
responsibility of the Property's management. Our responsibility is to express an
opinion on this Statement based on our audit.

We conducted our audit in accordance with auditing standards  generally accepted
in the  United  States of  America.  Those  standards  require  that we plan and
perform the audit to obtain reasonable  assurance about whether the Statement is
free of material  misstatement.  An audit includes  examining,  on a test basis,
evidence supporting the amounts and disclosures in the Statement.  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.
We believe that our audit provides a reasonable basis for our opinion.

The  accompanying  Statement was prepared for the purpose of complying  with the
rules  and  regulations  of the  Securities  and  Exchange  Commission  (for the
inclusion in the current report on Form 8-K/A of Mission West  Properties,  Inc.
dated April 9, 2003) 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 referred to above presents fairly, in all material
aspects,  the gross income and direct  operating  expenses (as described in Note
2), of the Property for the year ended  December 31, 2002,  in  conformity  with
accounting principles generally accepted in the United States of America.

                                                           /s/ Ernst & Young LLP

                                                                   June 16, 2003

                                     - 3 -



                            SAN TOMAS TECHNOLOGY PARK
        HISTORICAL SUMMARY OF GROSS INCOME AND DIRECT OPERATING EXPENSES
                             (Dollars in thousands)




                                            For the three months ended     For the year ended
                                                  March 31, 2003            December 31, 2002
                                            --------------------------  -------------------------
                                                   (Unaudited)
                                                                         
Revenues:
   Rental revenues from real estate                   $3,691                   $14,682
   Tenant reimbursements                                 310                     1,951
                                            -------------------------  -------------------------
        Total revenues                                 4,001                    16,633
                                            -------------------------  -------------------------

Expenses:
   Operating expenses                                    165                       587
   Bad debt expense                                        -                       315
   Real estate taxes                                     180                     1,676
                                            -------------------------  -------------------------
       Total expenses                                    345                     2,578
                                            -------------------------  -------------------------

Gross income in excess of direct operating
expenses                                              $3,656                   $14,055
                                            =========================  =========================




        The accompanying notes are an integral part of these statements.


                                     - 4 -



                           SAN TOMAS TECHNOLOGY PARK
  NOTES TO THE HISTORICAL SUMMARY OF GROSS INCOME AND DIRECT OPERATING EXPENSES
                             (Dollars in thousands)


1.   PROPERTY DESCRIPTION

     The  accompanying  Historical  Summary of Gross Income and Direct Operating
     Expenses  (the  "Statement")  include  the  operations  of  the  San  Tomas
     Technology  Park (the  "Property").  On April 9,  2003,  the  Property  was
     acquired by Mission West Properties, Inc. (the "Company") from an unrelated
     party for a purchase price of $110,000 (unaudited). The Property is located
     in Santa Clara, California,  which is in the "Silicon Valley." The Property
     consists of seven office buildings and aggregates approximately 625,000 net
     rentable square feet (unaudited).

2.   BASIS OF ACCOUNTING

     The Statement has been prepared in accordance  with Rule 3-14 of Regulation
     S-X of the  Securities and Exchange  Commission for real estate  properties
     acquired  or  to be  acquired.  Accordingly,  this  Statement  and  certain
     historical  expenses are not  comparable to the  operations of the Property
     after the acquisition,  including but not limited to,  corporate  expenses,
     certain owner occupant expenses, interest, amortization,  depreciation, and
     certain  other costs not directly  related to the future  operations of the
     Property.  Also excluded are management  fees,  which are not applicable in
     the future operations of the Property, because the Property will be managed
     by the Company's employees. Management is not aware of any material factors
     relating  to  the  Property   that  would  cause  the  reported   financial
     information not to be indicative of future operating results.

3.   SIGNIFICANT ACCOUNTING POLICIES

     Rental Revenue Recognition:

     Rental  revenue is  recognized  on the  straight-line  method of accounting
     required by accounting  principles  generally accepted in the United States
     of America  ("GAAP")  under which  contractual  rent payment  increases are
     recognized  evenly over the lease  term.  The excess of  recognized  rental
     revenue over rental cash receipts is recorded as deferred  rent. The impact
     of the  straight-line  rent adjustment  increased  revenue by approximately
     $142 and $596 for the three months ended March 31, 2003 (unaudited) and for
     the year ended December 31, 2002,  respectively.  Certain lease  agreements
     contain terms that provide for additional  rents based on  reimbursement of
     certain costs.  These  additional rents are reflected on the accrual basis.
     All rental  revenue  applicable  to each  tenant was  recognized  under the
     straight-line  method of  accounting  with the exception of two tenants who
     terminated  their lease early,  which were  recognized on a cash basis (see
     Subsequent Event under Note 5).

     Unaudited Interim Information:

     The Statement  for the three months ended March 31, 2003 is  unaudited.  In
     the  opinion  of  management,   all   adjustments   necessary  for  a  fair
     presentation  of such Statement (in accordance with the Basis of Accounting
     as described in Note 2) have been  included.  The results of operations are
     not necessarily indicative of the Property's future results of operations.

     Use of estimates:

     The  preparation of financial  statements in conformity  with GAAP requires
     management to make certain estimates, judgments and assumptions that affect
     the reported  amounts of revenues and expenses during the reported  period.
     Actual results may differ from those estimates under different  assumptions
     or conditions.

4.   FUTURE MINIMUM RENTS

     The office  buildings on the Property are leased to a total of four tenants
     representing 90% of the rentable square footage as of April 9, 2003. All of
     the leases are triple net operating  leases with initial terms extending to
     the year 2010. Excluding the lease to Auspex Systems,  Inc,  ("Auspex")(see
     Note 5), total minimum  annual lease payments due on a cash basis under the
     other  non-cancelable  operating  leases  in  effect  as of April  9,  2003
     (unaudited), excluding tenant reimbursements of expenses, for the remainder
     of 2003 and annually thereafter are as follows:

                                     - 5 -



        2003  (4/9/03 - 12/31/03)                                  $ 7,272
        2004                                                        10,338
        2005                                                         9,825
        2006                                                         9,614
        2007                                                         9,738
        2008                                                         5,837
       Thereafter                                                    3,081
                                                               ------------
          Total                                                    $55,705
                                                               ============


5.   SUBSEQUENT EVENT

     In  April  2003,  prior  to the  Company's  acquisition  of the  San  Tomas
     Technology Park, Turnstone Systems, Inc. ("Turnstone") terminated its lease
     agreement  with the previous  owner.  The cash rent received from Turnstone
     for the year ended  December  31, 2002 and for the three months ended March
     31, 2003 is $3,832 and $974, respectively. The future minimum rents in Note
     4 above do not include rent from that lease.

     On April 22, 2003,  Auspex,  which  leases  approximately  98,000  rentable
     square  feet at the San  Tomas  Technology  Park,  filed a  petition  under
     Chapter 11 of the Bankruptcy  Code.  Under the bankruptcy laws, this tenant
     may have the right to reject its lease for these premises and the Company's
     claim for rent will be  limited  to the  greater  of one year or 15% of the
     total  amount owing under the lease upon  default,  but not to exceed three
     years of the  remaining  term of the lease  following  the  earlier  of the
     petition filing date or the date on which the Company gains repossession of
     the  property,  as well as any rent that was unpaid on the earlier of those
     dates.  Prior to the bankruptcy filing, all amounts due to the Company from
     Auspex were  current  (unaudited).  Auspex is in the process of selling its
     assets,  and  management   believes  that  Auspex  will  reject  its  lease
     obligation following the sale of its assets, which should take place in the
     next 30-90  days.  The cash rent  received  from  Auspex for the year ended
     December  31, 2002 and for the three  months ended March 31, 2003 is $1,580
     and $399, respectively.  Excluding the Auspex lease, the occupancy rate for
     the Property at April 9, 2003 would have been 74%. The future minimum rents
     in Note 4 above do not include rent from that lease.

                                     - 6 -




                          MISSION WEST PROPERTIES, INC.
                      PRO FORMA CONSOLIDATED BALANCE SHEET
                              AS OF MARCH 31, 2003
                                   (Unaudited)

The  accompanying  unaudited Pro Forma Condensed  Consolidated  Balance Sheet of
Mission West Properties, Inc. (the "Company") is presented as if the acquisition
of the San Tomas Technology Park (the "Property"),  which occurred subsequent to
March 31, 2003, had been consummated on March 31, 2003.

Such pro forma information is based on the historical consolidated balance sheet
of the  Company  as of that date,  giving  effect to the  transaction  described
above.  This unaudited Pro Forma Condensed  Consolidated  financial  information
should be read in conjunction  with the Company's  Quarterly Report on Form 10-Q
for the quarter  ended March 31, 2003  (unaudited)  (SEC File No.  1-8383,  Form
10-Q, dated May 14, 2003). In management's opinion, all adjustments necessary to
reflect the above transaction have been made.

The following  unaudited Pro Forma Condensed  Consolidated  Balance Sheet is not
necessarily  indicative of what the actual  financial  position  would have been
assuming the above  transaction had been  consummated on March 31, 2003 nor does
it purport to represent the future financial position of the Company.


                                     - 7 -



                          MISSION WEST PROPERTIES, INC
                 PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET
                (Dollars in thousands, except per share amounts)
                                   (Unaudited)
                                    ---------



                                                     Mission West         Acquisition of
                                                    Properties, Inc.        San Tomas                   Pro Forma
                                                   March 31, 2003 (A)   Technology Park (B)            March 31, 2003
                                                  -------------------- --------------------        ---------------------
     ASSETS

                                                                                              
Real estate assets, at cost
    Land                                                 $234,707             $ 46,411     (C)          $  281,118
    Buildings and improvements                            727,135               63,601     (C)             790,736
                                                  -------------------- --------------------        ---------------------
       Total investments in properties                    961,842              110,012                   1,071,854
    Less accumulated depreciation                         (71,123)                   -                     (71,123)
                                                  -------------------- --------------------        ---------------------
       Net investments in properties                      890,719              110,012                   1,000,731
    Investments in unconsolidated joint venture             2,037                    -                       2,037
                                                  -------------------- --------------------        ---------------------
    Net investments in real estate assets                 892,756              110,012                   1,002,768
Cash and cash equivalents                                   2,721                    -                       2,721
Deferred rent                                              17,245                    -                      17,245
Other assets                                               16,855                    -                      16,855
                                                  -------------------- --------------------        ---------------------
       Total assets                                      $929,577             $110,012                  $1,039,589
                                                  ==================== ====================        =====================
     LIABILITIES AND STOCKHOLDERS' EQUITY

Liabilities:
    Line of credit (related parties)                     $     26                    -             $            26
    Revolving line of credit                                    -            $  29,229     (D)              29,229
    Mortgage notes payable                                223,586               80,000     (D)             303,586
    Mortgage notes payable (related parties)               11,001                    -                      11,001
    Interest payable                                          337                    -                         337
    Security deposits                                      10,398                  223     (E)              10,621
    Prepaid rental income                                  13,892                  560     (F)              14,452
    Dividend/distribution payable                          24,996                    -                      24,996
    Accounts payable and accrued expenses                   4,819                    -                       4,819
                                                  -------------------- --------------------        ---------------------
       Total liabilities                                  289,055              110,012                     399,067


Minority interests                                        528,288                    -                     528,288

Stockholders' equity:
    Preferred stock, $.001 par value, 20,000,000
       shares authorized, none issued and outstanding           -                    -                           -
    Common stock, $.001 par value, 200,000,000
       shares authorized, 17,653,691 and 17,487,329
       shares issued and outstanding at March 31, 2003
       and December 31, 2002, respectively                     18                    -                          18
    Paid-in-capital                                       129,911                    -                      129,911
    Accumulated deficit/profit                            (17,695)                   -                      (17,695)
                                                  -------------------- --------------------        ---------------------
       Total stockholders' equity                         112,234                    -                      112,234
                                                  -------------------- --------------------        ---------------------
       Total liabilities and stockholders' equity        $929,577             $110,012                   $1,039,589
                                                  ==================== ====================        =====================



        The accompanying notes are an integral part of these consolidated
                             financial statements.


                                     - 8 -



                          MISSION WEST PROPERTIES, INC.
                             NOTES TO THE PRO FORMA
                      CONDENSED CONSOLIDATED BALANCE SHEET
                                 MARCH 31, 2003
                                   (Unaudited)


(A)  Reflects  the  historical   consolidated  balance  sheet  of  Mission  West
     Properties,  Inc. (the  "Company") as of March 31, 2003. See the historical
     consolidated  financial  statements  and  notes  thereto  included  in  the
     Company's  Quarterly  Report on Form 10-Q for the  quarter  ended March 31,
     2003 (unaudited) (SEC File No. 1-8383, dated May 14, 2003).

(B)  Reflects the acquisition of the San Tomas Technology Park (the "Property").

(C)  Cost  allocation of the Property is based on fair market value as estimated
     by the  Company's  management  solely  for the  purpose  of this Pro  Forma
     Condensed Consolidated Balance Sheet.

(D)  The  Company  acquired  the  Property  with  proceeds  from  a new  $80,000
     short-term  mortgage  note and  borrowings  under its line of  credit  with
     Cupertino National Bank.

(E)  Reflects  the  assumption  of  security  deposits  from two  tenants at the
     Property.

(F)  Reflects prepaid rent.



                                     - 9 -




                          MISSION WEST PROPERTIES, INC.
            PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                  FOR THE THREE MONTHS ENDED MARCH 31, 2003 AND
                      FOR THE YEAR ENDED DECEMBER 31, 2002
                                   (Unaudited)

     The accompanying unaudited Pro Forma Condensed  Consolidated  Statements of
     Operations  for the three months ended March 31, 2003  (unaudited)  and for
     the year ended December 31, 2002  (unaudited) are presented as if the April
     9,  2003  acquisition  of the San  Tomas  Technology  Park and the  related
     financing had occurred on January 1, 2002.

     These Pro Forma Condensed Consolidated Statements of Operations (unaudited)
     should be read in conjunction  with the historical  consolidated  financial
     statements  and notes  thereto of the  Company,  reported on the  Company's
     Annual  Report on Form 10-K for the year ended  December 31, 2002 (SEC File
     No. 1-8383,  Form 10-K,  dated March 27, 2003) and the Company's  Quarterly
     Report on Form 10-Q for the quarter ended March 31, 2003  (unaudited)  (SEC
     File No. 1-8383, Form 10-Q, dated May 14, 2003).

     The  unaudited  Pro  Forma  Condensed  Consolidated  financial  information
     prepared by the Company's management is not necessarily  indicative of what
     the actual results of operations would have been for the three months ended
     March 31, 2003 or for the year ended  December 31, 2002, had the previously
     described  transaction  actually occurred on January 1, 2002 and the effect
     thereof  carried  forward  through the  three-month  period ended March 31,
     2003,  nor does it purport to present  future  results of operations of the
     Company.


                                     - 10 -



                          MISSION WEST PROPERTIES, INC.
            PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                    FOR THE THREE MONTHS ENDED MARCH 31, 2003
                (Dollars in thousands, except per share amounts)
                                   (Unaudited)
                                    --------



                                                                          Acquisition of
                                                   Three months ended       San Tomas
                                                     March 31, 2003      Technology Park                 Pro Forma
                                                  -------------------- --------------------        ---------------------
                                                                                              
Revenues:
   Rental revenues from real estate                       $31,431               $3,734     (A)             $35,165
   Tenant reimbursements                                    4,575                  310     (B)               4,885
   Other income, including interest                           735                    -                         735
                                                  -------------------- --------------------        ---------------------
       Total revenues                                      36,741                4,044                      40,785
                                                  -------------------- --------------------        ---------------------

Expenses:
   Operating expenses                                       1,519                  165                       1,684
   Real estate taxes                                        3,075                  180                       3,255
   Depreciation of real estate                              4,563                  398     (D)               4,961
   General and administrative                                 358                    -                         358
   Interest                                                 3,406                  897     (E)               4,303
   Interest (related parties)                                 294                    -                         294
                                                  -------------------- --------------------        ---------------------
       Total expenses                                      13,215                1,640                      14,855
                                                  -------------------- --------------------        ---------------------

Income before minority interests and equity in
   earnings of unconsolidated joint venture                23,526                2,404                      25,930
Equity in earnings of unconsolidated
   joint venture                                              737                    -                         737
                                                  -------------------- --------------------        ---------------------
Income before minority interests                           24,263                2,404                      26,667
Minority interests                                         20,229                2,004     (F)              22,233
                                                  -------------------- --------------------        ---------------------
   Income from continuing operations                        4,034                  400                       4,434
                                                  -------------------- --------------------        ---------------------

Net income to common stockholders                         $ 4,034               $  400                     $ 4,434
                                                  ==================== ====================        =====================
Net income to minority interests                          $20,229               $2,004                     $22,233
                                                  ==================== ====================        =====================
Income per share from continuing operations:
   Basic                                                    $0.23                                            $0.25
                                                  ====================                             =====================
   Diluted                                                  $0.23                                            $0.25
                                                  ====================                             =====================
Net income per share to common stockholders:
   Basic                                                    $0.23                                            $0.25
                                                  ====================                             =====================
   Diluted                                                  $0.23                                            $0.25
                                                  ====================                             =====================
Weighted average number of shares of
   common stock outstanding (basic)                    17,637,260                                       17,637,260
                                                  ====================                             =====================
Weighted average number of shares of
   common stock outstanding (diluted)                  17,695,001                                       17,695,001
                                                  ====================                             =====================



        The accompanying notes are an integral part of these consolidated
                             financial statements.

                                     - 11 -




                          MISSION WEST PROPERTIES, INC.
            PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                      FOR THE YEAR ENDED DECEMBER 31, 2002
                (Dollars in thousands, except per share amounts)
                                   (Unaudited)
                                    --------



                                                                         Acquisition of
                                                       Year ended           San Tomas
                                                    December 31, 2002    Technology Park                Pro Forma
                                                  -------------------- --------------------        ---------------------
                                                                                              
Revenues:
   Rental revenues from real estate                      $129,781              $14,856     (A)            $144,637
   Tenant reimbursements                                   20,097                1,960     (B)              22,057
   Other income, including interest                         4,250                    -                       4,250
                                                  -------------------- --------------------        ---------------------
        Total revenues                                    154,128               16,816                     170,944
                                                  -------------------- --------------------        ---------------------

Expenses:
   Operating expenses                                       9,781                  780     (C)              10,561
   Real estate taxes                                       12,234                1,676                      13,910
   Depreciation of real estate                             17,928                1,590     (D)              19,518
   General and administrative                               1,488                    -                       1,488
   Interest                                                 9,588                4,107     (E)              13,695
   Interest (related parties)                               3,422                    -                       3,422
                                                  -------------------- --------------------        ---------------------
        Total expenses                                     54,441                8,153                      62,594
                                                  -------------------- --------------------        ---------------------

Income before minority interests                           99,687                8,663                     108,350
Minority interests                                         83,251                7,218     (F)              90,469
                                                  -------------------- --------------------        ---------------------
   Income from continuing operations                       16,436                1,445                      17,881
                                                  -------------------- --------------------        ---------------------

Discontinued operations, net minority interests:
Gain from disposal of discontinued operations               1,018                    -                       1,018
Income attributable to discontinued operations                 47                    -                          47
                                                  -------------------- --------------------        ---------------------
   Income from discontinued operations                      1,065                    -                       1,065
                                                  -------------------- --------------------        ---------------------

Net income to common stockholders                        $ 17,501              $ 1,445                    $ 18,946
                                                  ==================== ====================        =====================
Net income to minority interests                         $ 88,576              $ 7,218                    $ 95,794
                                                  ==================== ====================        =====================
Income per share from continuing operations:
   Basic                                                    $0.94                                            $1.03
                                                  ====================                             =====================
   Diluted                                                  $0.92                                            $1.00
                                                  ====================                             =====================
Income per share from discontinued operations:
   Basic                                                    $0.06                                            $0.06
                                                  ====================                             =====================
   Diluted                                                  $0.06                                            $0.06
                                                  ====================                             =====================
Net income per share to common stockholders:
   Basic                                                    $1.00                                            $1.09
                                                  ====================                             =====================
   Diluted                                                  $0.98                                            $1.06
                                                  ====================                             =====================
Weighted average number of shares of
  common stock outstanding (basic)                     17,455,799                                       17,455,799
                                                  ====================                             =====================
Weighted average number of shares of
  common stock outstanding (diluted)                   17,854,892                                       17,854,892
                                                  ====================                             =====================



        The accompanying notes are an integral part of these consolidated
                              financial statements.


                                     - 12 -



                          MISSION WEST PROPERTIES, INC.
                             NOTES TO THE PRO FORMA
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                             (Dollars in thousands)


The unaudited Pro Forma Condensed Consolidated  Statements of Operations reflect
the historical  results of operations for Mission West Properties,  Inc. for the
quarter  ended March 31, 2003 and for the year ended  December  31, 2002 and the
historical results of operations as reflected in the Historical Summary of Gross
Income  and  Direct  Operating  Expenses  (the  "Statement")  of the  San  Tomas
Technology  Park (the  "Property"),  assuming  acquisition  of the  Property  on
January 1, 2002, as adjusted for base rent,  interest  expense and  depreciation
for the three  months  ended March 31, 2003 and for the year ended  December 31,
2002.

(A)  Rental  revenues  from real estate  includes  adjustments  based on the pro
     forma acquisition date of January 1, 2002 are as follows:



                                                           Three months ended             Year ended
                                                             March 31, 2003           December 31, 2002
                                                         -----------------------    -----------------------
                                                                        (Dollars in thousands)

                                                                                     
            Rental revenues from real estate                      $3,691                    $14,682
            Pro forma rental revenues adjustments                     43                        174
                                                         -----------------------    -----------------------
            Pro forma rental revenues from real estate            $3,734                    $14,856
                                                         =======================    =======================



     Rental  revenue is  recognized  on the  straight-line  method of accounting
     required by accounting  principles  generally accepted in the United States
     of America under which  contractual  rent payment  increases are recognized
     evenly over the lease term.

(B)  Tenant  reimbursements  are  based  on  the  occupancy  level  of 90% as of
     December 31, 2002,  multiplied  by net  operating  expenses and real estate
     taxes, excluding bad debt expense.

(C)  Comprises  of  direct  operating  expenses  and $278 of bad  debt  expense,
     excluding professional fees.

(D)  Reflects the pro forma depreciation expense for the Property.  Depreciation
     for the Property is based on an  allocation  of the purchase  price to land
     and  building  as  estimated  by the  Company's  management  solely for the
     purpose  of this  pro  forma.  Depreciation  expense  is  computed  over an
     estimated useful life of 40 years for the buildings.

(E)  Reflects  the  increase in interest  expense as a result of  financing  the
     acquired Property.  The adjustment relates to the new $80,000 mortgage note
     and  borrowings  under  the  Cupertino  National  Bank line of credit at an
     interest   rate  equal  to  LIBOR  plus  200  basis   points,   which  were
     approximately  3.33% and 3.76% for the  three-month  period ended March 31,
     2003 and for the year ended December 31, 2002, respectively.

(F)  Reflects  an  adjustment  for  the  minority   interest  in  the  Operating
     Partnership's share of pro forma income before discontinued operations.

                                     - 13 -




Exhibit 23.1

                       Consent of Independent Accountants


We consent to the  incorporation by reference in the  Registration  Statement on
Form S-8 No. 333-80369 of Mission West Properties, Inc. of our report dated June
16,  2003 with  respect to the  Historical  Summary  of Gross  Income and Direct
Operating  Expenses of the San Tomas Technology Park for the year ended December
31, 2002,  included in this Form 8K/A of Mission West Properties,  Inc. dated as
of April 9, 2003 filed with the Securities and Exchange Commission.

                                                           /s/ Ernst & Young LLP

                                                                   June 16, 2003