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

                                    FORM 8-K

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

        Date of report (date of earliest event reported): April 18, 2007

                          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 of                                 (I.R.S. Employer
        incorporation)                                           Identification)


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

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

      Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
           following provisions (see General Instruction A.2. below):


  [ ]     Written communications pursuant to Rule 425 under the Securities Act
          (17 CFR 230.425)

  [ ]     Soliciting material pursuant to Rule 14a-12 under the Exchange Act
          (17 CFR 240.14a-12)

  [ ]     Pre-commencement communications pursuant to Rule 14d-2(b) under the
          Exchange Act (17 CFR 240.14d-2(b))

  [ ]     Pre-commencement communications pursuant to Rule 13e-4(c) under the
          Exchange Act (17 CFR 240.13e-4(c))

                                     - 1 -





ITEM 2.02. RESULTS OF OPERATIONS AND FINANCIAL CONDITION.

(a)  The following information is being furnished by the Company as required for
     Item  2.02(a)  of this  report  and shall not be deemed to be  "filed"  for
     purposes of Section 18 of the Securities Exchange Act of 1934:

On April 18, 2007,  the Company  issued a press release  announcing its earnings
results  for the first  quarter  ended  March 31,  2007.  The press  release  is
attached to this Current Report as Exhibit 99.1 and is incorporated by reference
in response to Item 2.02(a) of this report.








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

                                   SIGNATURE

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: April 18, 2007                 By: /s/ Wayne N. Pham
                                        -----------------------------------
                                        Wayne N. Pham
                                        Vice President of Finance and Controller

                                     - 2 -




Exhibit 99.1


                                  PRESS RELEASE

For Immediate News Release
April 18, 2007


     MISSION WEST PROPERTIES ANNOUNCES FIRST QUARTER 2007 OPERATING RESULTS

  "We build the buildings for the high tech companies that build the internet"


Cupertino,  CA - Mission West Properties,  Inc. (AMEX:  MSW) reported today that
Funds  From  Operations  ("FFO")  for the  quarter  ended  March  31,  2007  was
approximately  $23,905,000  or $0.23 per diluted common share  (considering  the
potential  effect of all O.P. units being  exchanged for shares of the Company's
common  stock) as compared  to  approximately  $34,526,000  or $0.33 per diluted
common share for the same period in 2006. On a sequential quarter basis, FFO for
the quarter ended December 31, 2006 was  approximately  $0.18 per diluted common
share.  Termination  fees and security  deposit  forfeitures  income relating to
lease terminations accounted for approximately $10,109,000, or $0.10 per diluted
common share and $16,056,000, or $0.15 per diluted common share for the quarters
ended March 31, 2007 and 2006, respectively.  Write-off of an above market lease
intangible asset against income relating to one lease termination  accounted for
approximately  $3,619,000,  or $0.03 per  diluted  common  share for the quarter
ended March 31, 2007.

Net income per diluted  share to common  stockholders  was $0.17 for the quarter
ended March 31, 2007  compared to $0.28 for the quarter  ended March 31, 2006, a
per share decrease of approximately 39.3%. Termination fees and security deposit
forfeitures  income relating to lease  terminations  accounted for approximately
$0.10 and $0.16 per diluted  common share for the quarters  ended March 31, 2007
and 2006,  respectively.  Write-off of in-place lease intangible  assets against
income relating to two lease terminations  accounted for approximately $0.04 per
diluted common share for the quarter ended March 31, 2007.

ACQUISITION ACTIVITY

In March  2007,  the Company  acquired  50 acres of vacant land in Morgan  Hill,
California,  which could support  approximately  725,000 rentable square feet of
space.  The land is  currently  zoned for  industrial  use and a portion has the
potential  to be rezoned for  residential  use. The  acquisition  price for this
property  was  approximately  $25,543,000  and was funded  from a portion of the
proceeds  received from the Samaritan  property  sale,  which was  classified as
restricted cash as of December 31, 2006.

COMPANY PROFILE

Mission West Properties, Inc. operates as a self-managed,  self-administered and
fully integrated REIT engaged in the management, leasing, marketing, development
and acquisition of commercial R&D properties,  primarily  located in the Silicon
Valley portion of the San Francisco Bay Area. Currently, the Company manages 107
properties  totaling   approximately  7.7  million  rentable  square  feet.  For
additional information, please contact Investor Relations at 408-725-0700.

The matters described herein 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 ability to complete  acquisitions  under the Berg Land  Holdings  Option
Agreement  with the Berg  Group  and other  factors  detailed  in the  Company's
registration  statements,  and periodic  filings with the  Securities & Exchange
Commission.

                                     - 3 -





                          MISSION WEST PROPERTIES, INC.
                             SELECTED FINANCIAL DATA
        (In thousands, except share, per share and property data amounts)





                                                   Three Months        Three Months
                                                      Ended               Ended
                                                   Mar 31, 2007        Mar 31, 2006
                                                 ----------------    ----------------
REVENUES:
                                                                
Rental revenue from real estate                       $21,338             $24,788
Above market lease intangible asset amortization       (4,091)(1)            (472)(1)
Tenant reimbursements                                   3,227               3,309
Lease termination income                               10,109              16,056
Other income, including interest                        3,056                 732
                                                 ----------------    ----------------
  Total revenues                                       33,639              44,413
                                                 ----------------    ----------------

EXPENSES:
Operating expenses                                      1,968               2,056
Real estate taxes                                       2,578               2,625
Interest                                                5,069               5,215
Interest (related parties)                                184                 192
General and administrative                                713                 635
Depreciation and amortization of real estate            6,210(2)            5,479(2)
                                                 ----------------    ----------------
  Total expenses                                       16,722              16,202
                                                 ----------------    ----------------
Income before equity in earnings of unconsolidated
   joint venture and minority interests                16,917              28,211
Equity in earnings of unconsolidated joint venture        337                 331
Minority interests                                    (13,879)            (23,390)
                                                 ----------------    ----------------
   Income from operations                               3,375               5,152

Net income to common stockholders                     $ 3,375             $ 5,152
                                                 ================    ================
Net income to minority interests                      $13,879             $23,390
                                                 ================    ================

Net income per share to common stockholders:
   Basic                                               $0.17               $0.28
                                                 ================    ================
   Diluted                                             $0.17               $0.28
                                                 ================    ================
Weighted average shares of common stock (basic)     19,582,787          18,455,897
                                                 ================    ================
Weighted average shares of common stock (diluted)   19,889,453          18,520,297
                                                 ================    ================
Weighted average O.P. units outstanding             85,066,999          86,082,539
                                                 ================    ================

FUNDS FROM OPERATIONS

Funds from operations                                 $23,905             $34,526
                                                 ================    ================
Funds from operations per share (3)                   $ 0.23              $ 0.33
                                                 ================    ================
Outstanding common stock                            19,625,587          18,511,291
                                                 ================    ================
Outstanding O.P. units                              85,024,199          86,038,095
                                                 ================    ================
Weighted average O.P. units and common stock
   outstanding (diluted)                           104,956,452         104,602,836
                                                 ================    ================


                                     - 4 -




                                                   Three Months        Three Months
                                                       Ended               Ended
FUNDS FROM OPERATIONS CALCULATION                  Mar 31, 2007        Mar 31, 2006
                                                 -----------------    ---------------
                                                                   
Net income                                           $ 3,375              $ 5,152
Add:
   Minority interests (4)                             13,755               23,256
   Depreciation and amortization of real estate        6,586                5,907
   Depreciation & amortization of real estate held in
      unconsolidated joint venture                       189                  211
                                                 -----------------    ---------------
Funds from operations                                $23,905              $34,526
                                                 =================    ===============


Funds From Operations ("FFO") is a non-GAAP  financial  measurement used by real
estate investment trusts ("REITs") to measure and compare operating performance.
As defined by NAREIT,  FFO represents net income (loss) before minority interest
of unit  holders  (computed  in  accordance  with  GAAP,  accounting  principles
generally accepted in the United States of America), excluding gains (or losses)
from  debt  restructuring  and  sales of  property,  plus  real  estate  related
depreciation  and  amortization  (excluding  amortization of deferred  financing
costs and  depreciation  of non-real  estate assets) and after  adjustments  for
unconsolidated  partnerships and joint ventures.  Management considers FFO to be
an  appropriate  supplemental  measure of the Company's  operating and financial
performance  because  when  compared  year over year,  it reflects the impact to
operations  from trends in  occupancy  rates,  rental  rates,  operating  costs,
general and administrative  expenses and interest costs, providing a perspective
not immediately apparent from net income. In addition,  management believes that
FFO provides useful information about the Company's  financial  performance when
compared  to other  REITs  since FFO is  generally  recognized  as the  industry
standard for reporting the operations of REITs.  FFO should not be considered as
an alternative for net income as a measure of  profitability or is it comparable
to cash flows  provided by operating  activities  determined in accordance  with
GAAP. FFO is not comparable to similarly  entitled items reported by other REITs
that do not define them exactly as we define FFO.



                                                   Three Months      Three Months
                                                       Ended             Ended
PROPERTY AND OTHER DATA:                           Mar 31, 2007      Mar 31, 2006
                                                 -----------------  ---------------
                                                               
Total properties, end of period                          107                109
Total square feet, end of period                   7,701,359          7,894,355
Average monthly rental revenue per square foot (5)     $1.50              $1.63
Occupancy for leased properties                         69.4%              67.3%
Straight-line rent                                   ($1,595)             ($677)
Leasing commissions                                   $  458             $  270
Capital expenditures                                  $  863             $   79


                                     - 5 -




BALANCE SHEET                                    March 31, 2007      December 31, 2006
                                              --------------------  --------------------
Assets:
                                                                 
   Land                                            $ 297,765             $ 272,223
   Buildings and improvements                        757,459               756,596
   Real estate related intangible assets               6,422                19,529
                                              --------------------  --------------------
      Total investments in properties              1,061,646             1,048,348
Less accumulated depreciation and amortization      (146,653)             (149,459)
                                              --------------------  --------------------
      Net investments in properties                  914,993               898,889
   Cash and cash equivalents                          45,703                33,785
   Restricted cash                                    21,503                48,245
   Deferred rent receivable                           16,894                18,489
   Investment in unconsolidated joint venture          3,155                 3,468
   Other assets, net                                  25,051                24,611
                                              --------------------  --------------------
      Total assets                                $1,027,299            $1,027,487
                                              ====================  ====================

Liabilities:
   Mortgage notes payable                          $ 345,495             $ 348,101
   Mortgage notes payable - related parties            9,549                 9,654
   Interest payable                                    1,366                 1,375
   Security deposits                                   6,798                 6,977
   Deferred rental income                              7,915                 6,874
   Dividend/distribution payable                      16,745                16,745
   Accounts payable and accrued expenses               8,795                 7,601
                                              --------------------  --------------------
      Total liabilities                              396,663               397,327
                                              --------------------  --------------------

Minority interests                                   498,970               501,282
                                              --------------------  --------------------

Stockholders' equity:
   Common stock, $.001 par value                          20                    19
   Paid-in capital                                   152,094               149,541
   Accumulated deficit                               (20,448)              (20,682)
                                              --------------------  --------------------
      Total stockholders' equity                     131,666               128,878
                                              --------------------  --------------------
      Total liabilities and stockholders' equity  $1,027,299            $1,027,487
                                              ====================  ====================



(1)  Amortization  of  an  above-market   lease  intangible  asset  pursuant  to
     Statement   of   Financial   Accounting   Standard   No.   141,   "Business
     Combinations."

(2)  Includes  approximately  $1,193 and $340 in  amortization  expense  for the
     three  months  ended  March  31,  2007  and  2006,  respectively,  for  the
     amortization of in-place lease value intangible asset pursuant to Statement
     of Financial Accounting Standard No. 141, "Business Combinations."

(3)  Calculated  on a fully diluted  basis.  Assumes  conversion  of O.P.  units
     outstanding into the Company's common stock.

(4)  The  minority  interest  for third  parties  has been  deducted  from total
     minority interest in calculating FFO.

(5)  Average  monthly  rental  revenue  per square foot has been  determined  by
     taking the cash base rent for the period divided by the number of months in
     the period,  and then  divided by the average  occupied  square feet in the
     period.