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): July 19, 2006

                          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 July 19, 2006,  the Company  issued a press release  announcing  its earnings
results  for the  second  quarter  ended  June 30,  2006.  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: July 19, 2006                           By: /s/ Wayne N. Pham
                                              ----------------------------------
                                              Wayne N. Pham
                                              Vice President of Finance
                                              and Controller

                                     - 2 -



                                                                   PRESS RELEASE

For Immediate News Release
July 19, 2006


     MISSION WEST PROPERTIES ANNOUNCES SECOND QUARTER 2006 OPERATING RESULTS

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


CUPERTINO,  CA - MISSION WEST PROPERTIES,  INC.  (AMEX/PCX:  MSW) reported today
that Funds From  Operations  ("FFO")  for the  quarter  ended June 30,  2006 was
$16,954,000 or $0.16 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 $21,141,000 or $0.20 per diluted common share for the same period in
2005. On a sequential  quarter basis,  excluding  termination  fees and security
deposit forfeitures from lease terminations, FFO for the quarter ended March 31,
2006 was $0.18 per diluted common share.  Termination  fees and security deposit
forfeitures   relating  to  lease   terminations   accounted  for  approximately
$16,056,000,  or $0.15 per diluted  common  share for the period ended March 31,
2006.  For the six months ended June 30, 2006,  FFO increased to  $51,480,000 or
$0.49 per diluted share from FFO of  $41,449,000  or $0.40 per diluted share for
the same period in 2005.

Net income to common  stockholders  per diluted  share was $0.11 for the quarter
ended June 30, 2006 compared to $0.15 for the quarter ended June 30, 2005, a per
share decrease of  approximately  26.7%. For the six months ended June 30, 2006,
net income to common stockholders per diluted share was $0.39, up from $0.28 one
year ago, a per share increase of  approximately  39.3%.  Excluding  termination
fees and security deposit forfeitures relating to lease terminations, net income
to common  stockholders per diluted share for the six months ended June 30, 2006
was $0.23 per diluted share.

ACQUISITION ACTIVITY

In April 2006,  the Company  acquired a fully leased  office/R&D  building  with
approximately  42,100  rentable  square feet located at 1875  Charlston  Road in
Mountain View,  California by purchasing Mission West Charlston,  LLC, an entity
controlled by Carl E. Berg. The acquisition was completed in accordance with the
Berg Land Holdings Option Agreement. The total acquisition price for this entity
was  approximately  $2,615,000,  which  is  subject  to a ground  lease  with an
unrelated  party  running  through  June 2057 for the land.  The first year cash
return for this acquisition is 17%.

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 110
properties  totaling   approximately  7.9  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       Six Months        Six Months
                                                      Ended                Ended            Ended             Ended
                                                  June 30, 2006        June 30, 2005    June 30, 2006      June 30, 2005
                                                 -----------------    ---------------   ---------------   ---------------
REVENUES:
                                                                                              
Rental revenue from real estate                     $22,327 (1)          $25,104 (1)       $46,643 (1)      $51,351 (1)
Tenant reimbursements                                 3,066                3,594             6,375            7,222
Other income, including lease terminations
     and interest                                     1,101                2,289            17,889            2,592
                                                 -----------------    ---------------   ---------------   ---------------
  Total revenues                                     26,494               30,987            70,907           61,165
                                                 -----------------    ---------------   ---------------   ---------------
EXPENSES:
Operating expenses                                    2,037                2,049             4,092            4,222
Real estate taxes                                     2,274                2,080             4,900            4,797
Interest                                              5,193                5,905            10,408           10,552
Interest (related parties)                              190                  243               381              549
General and administrative                              637                  443             1,272            1,118
Depreciation and amortization of real estate          5,425 (2)            5,369 (2)        10,904 (2)       10,942 (2)
                                                 -----------------    ---------------   ---------------   ---------------
  Total expenses                                     15,756               16,089            31,957           32,180
                                                 -----------------    ---------------   ---------------   ---------------
Income before equity in earnings of
unconsolidated joint venture and minority interests  10,738               14,898            38,950           28,985
Equity in earnings of unconsolidated joint venture      351                  393               682              387
Minority interests                                   (8,968)             (12,594)          (32,358)         (24,272)
                                                 -----------------    ---------------   ---------------   ---------------
   Income from continuing operations                  2,121                2,697             7,274            5,100
                                                 -----------------    ---------------   ---------------   ---------------

Discontinued operations, net of minority interests:
  Gain from disposal of discontinued operations           -                    -                 -               14
  Loss from discontinued operations                       -                   (2)                -              (12)
                                                 -----------------    ---------------   ---------------   ---------------
(Loss)/income from discontinued operations                -                   (2)                -                2

                                                 -----------------    ---------------   ---------------   ---------------
Net income to common stockholders                    $2,121               $2,695            $7,274           $5,102
                                                 =================    ===============   ===============   ===============
Net income to minority interests                     $8,968              $12,587           $32,358          $24,282
                                                 =================    ===============   ===============   ===============
Income per share from continuing operations:
   Basic                                              $0.11                $0.15             $0.39            $0.28
   Diluted                                            $0.11                $0.15             $0.39            $0.28
Income per share from discontinued operations:
   Basic                                                  -                    -                 -                -
   Diluted                                                -                    -                 -                -
                                                 -----------------    ---------------   ---------------   ---------------
Net income per share to common stockholders:
   Basic                                              $0.11                $0.15             $0.39            $0.28
                                                 =================    ===============   ===============   ===============
   Diluted                                            $0.11                $0.15             $0.39            $0.28
                                                 =================    ===============   ===============   ===============
Weighted average shares of common stock (basic)     19,028,240          18,257,982        18,743,649        18,184,661
                                                 =================    ===============   ===============   ===============
Weighted average shares of common stock (diluted)   19,123,945          18,283,058        18,824,340        18,229,245
                                                 =================    ===============   ===============   ===============
Weighted average O.P. units outstanding             85,522,039          86,225,222        85,800,741        86,297,888
                                                 =================    ===============   ===============   ===============

FUNDS FROM OPERATIONS
Funds from operations                               $16,954              $21,141           $51,480          $41,449
                                                 =================    ===============   ===============   ===============
Funds from operations per share (3)                  $ 0.16               $ 0.20            $ 0.49           $ 0.40
                                                 =================    ===============   ===============   ===============
Outstanding common stock                            19,342,187          18,352,691        19,342,187        18,352,691
                                                 =================    ===============   ===============   ===============
Outstanding O.P. units                              85,235,999          86,169,195        85,235,999        86,169,195
                                                 =================    ===============   ===============   ===============
Weighted average O.P. units and common stock
   outstanding (diluted)                           104,645,984         104,508,281       104,625,081       104,527,133
                                                 =================    ===============   ===============   ===============


                                     - 4 -




                                                    Three Months         Three Months     Six Months        Six Months
FUNDS FROM OPERATIONS CALCULATION                      Ended                Ended           Ended             Ended
                                                   June 30, 2006        June 30, 2005    June 30, 2006     June 30, 2005
                                                 -----------------    ---------------   ---------------   ---------------
                                                                                               
Net income                                           $2,121              $2,695            $7,274            $5,102
Add:
   Minority interests (4)                             8,855              12,453            32,110            24,028
   Depreciation and amortization of real estate
      from continuing operations                      5,767               5,783            11,674            11,785
   Depreciation and amortization of real estate
      from discontinued operations                        -                   -                 -                33
   Depreciation & amortization of real estate
      held in unconsolidated joint venture              211                 210               422               564
Less:
   Gain on sale of real estate                            -                   -                 -               (63)
                                                 -----------------    ---------------   ---------------   ---------------
Funds from operations                               $16,954             $21,141           $51,480           $41,449
                                                 =================    ===============   ===============   ===============


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        Six Months          Six Months
                                                      Ended             Ended               Ended              Ended
                                                  June 30, 2006     June 30, 2005       June 30, 2006       June 30, 2005
                                                 ---------------   ---------------    -----------------    ---------------
                                                                                                
Total properties, end of period                          110                  108              110                 108
Total square feet, end of period                   7,936,481            8,019,082        7,936,481           8,019,082
Average monthly rental revenue per square foot (5)     $1.60                $1.59            $1.61               $1.60
Occupancy for leased properties                        63.0%                65.7%           63.0%                65.7%
Straight-line rent                                     ($152)                $275           ($830)               $ 890
Leasing commissions                                     $ 46                 $369            $ 316              $3,953
Capital expenditures                                    $ 85                 $352            $ 163               $ 637



                                     - 5 -









BALANCE SHEET
                                                  June 30, 2006       December 31, 2005
                                              --------------------  --------------------
Assets:
                                                                 
Land                                               $ 277,269             $ 273,933
Buildings and improvements                           777,192               766,457
Real estate related intangible assets                 19,529                17,410
                                              --------------------  --------------------
   Total investments in properties                 1,073,990             1,057,800
Less accumulated depreciation and amortization      (142,268)             (130,419)
                                              --------------------  --------------------
   Net investments in properties                     931,722               927,381
Cash and cash equivalents                             39,470                31,441
Restricted cash                                       10,626                16,712
Deferred rent receivable                              18,388                19,218
Investment in unconsolidated joint venture             3,435                 3,263
Other assets, net                                     25,028                25,362
                                              --------------------  --------------------
   Total assets                                   $1,028,669            $1,023,377
                                              ====================  ====================

Liabilities:
Mortgage notes payable                             $ 352,515             $ 357,481
Mortgage notes payable - related parties               9,856                10,051
Interest payable                                         321                   321
Security deposits                                      6,681                 8,047
Deferred rental income                                 9,846                 6,103
Dividend/distribution payable                         16,733                16,725
Accounts payable and accrued expenses                 10,747                 8,952
                                              --------------------  --------------------
   Total liabilities                                 406,699               407,680
                                              --------------------  --------------------

Minority interests                                   495,318               500,682
                                              --------------------  --------------------

Stockholders' equity:
Common stock, $.001 par value                             19                    18
Paid-in capital                                      148,457               138,038
Accumulated deficit                                  (21,824)              (23,041)
                                              --------------------  --------------------
   Total stockholders' equity                        126,652               115,015
                                              --------------------  --------------------
   Total liabilities and stockholders' equity     $1,028,669            $1,023,377
                                              ====================  ====================



(1)  Includes  approximately  $472 in amortization  expense for the three months
     ended June 30, 2006 and 2005 and $944 in  amortization  expense for the six
     months ended June 30, 2006 and 2005 for the amortization of an above-market
     lease  intangible  asset  pursuant to  Statement  of  Financial  Accounting
     Standard No. 141, "Business Combinations."

(2)  Includes  approximately $425 and $361 in amortization expense for the three
     months  ended June 30,  2006 and 2005,  respectively,  and $764 and $801 in
     amortization  expense  for the six  months  ended  June 30,  2006 and 2005,
     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.


                                     - 6 -