SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                ----------------
                            SCHEDULE 14A INFORMATION

                Proxy Statement Pursuant to Section 14(A) of the
                       Securities and Exchange Act of 1934


Check the appropriate box:
  [ ]Preliminary proxy statement
  [ ]Confidential, for use of the Commission only
  [X]Definitive proxy statement
  [ ]Definitive additional materials
  [ ]Soliciting material pursuant to Rule 14a-11(c) or Rule 14a-12

                          MISSION WEST PROPERTIES, INC.
                (Name of Registrant as Specified in its Charter)

             -------------------------------------------------------
      (Name of Person (s) Filing Proxy Statement, if other than Registrant)


Payment of filing fee (Check the appropriate box):
  [X]No fee required
  [ ]Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11
     (1)  Title of each class of securities to which transaction applies:
     (2)  Aggregate number of securities to transaction applies:
     (3)  Per unit  price  or other  underlying  value of  transaction  computed
          pursuant to Exchange Act Rule 0-11:
     (4)  Proposed maximum aggregate value of transaction:
     (5)  Total fee paid:
  [ ]Fee paid previously with preliminary materials
  [ ]Check box if any  part of the fee is offset as provide by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration number, of the
     Form or Schedule and the date of its filing.
     (1) Amount Previously Paid:
     (2) Form, Schedule or Registration Statement No.:
     (3) Filing Party:
     (4) Date Filed:



            First mailed to stockholders on or about April 25, 2001.




                          MISSION WEST PROPERTIES, INC.
                               10050 Bandley Drive
                           Cupertino, California 95014


Dear Stockholder,

     You are cordially invited to attend the 2001 Annual Meeting of Stockholders
of Mission  West  Properties,  Inc.  (the  "Company")  to be held at 10:00 a.m.,
Pacific Daylight Time ("PDT"), on May 17, 2001 at the Company's offices at 10050
Bandley Drive, Cupertino, California 95014.

     The  matters  expected to be acted upon at the  meeting  are  described  in
detail in the following  Notice of the 2001 Annual Meeting of  Shareholders  and
Proxy Statement. Also included is a Proxy Card and postage paid envelope.

     Whether you plan to attend the Annual  Meeting or not, it is important that
you promptly complete, sign, date and return the enclosed proxy card, or vote in
accordance  with the  instruction  set forth on the proxy card. This will ensure
your proper representation at the Annual Meeting.

                               Sincerely,



                               Carl E. Berg
                               -------------------------------------------------
                               Chairman of the Board and Chief Executive Officer


                             YOUR VOTE IS IMPORTANT.
                  PLEASE REMEMBER TO PROMPTLY RETURN YOUR PROXY





                          MISSION WEST PROPERTIES, INC.
                  NOTICE OF 2001 ANNUAL MEETING OF STOCKHOLDERS
                           To be held on May 17, 2001


To the Stockholders of Mission West Properties, Inc.:

     NOTICE IS HEREBY  GIVEN that the 2001  Annual  Meeting of  Stockholders  of
Mission West Properties,  Inc., a Maryland corporation (the "Company"),  will be
held on May 17, 2001 at the Company's offices at 10050 Bandley Drive, Cupertino,
California 95014 at 10:00 a.m., PDT, for the following purposes:

     1.   To elect four  members of the Board of  Directors to hold office until
          the next Annual  Meeting of  Stockholders  or until  their  respective
          successors  have been  elected and  qualify.  The nominees are Carl E.
          Berg, John C. Bolger, William A. Hasler, and Lawrence B. Helzel.

     2.   To   ratify   the    appointment   of   the    accounting    firm   of
          PricewaterhouseCoopers LLP as independent auditors for the Company for
          the year ending December 31, 2001.

     3.   To transact such other business as may properly come before the Annual
          Meeting or any adjournment or postponement thereof.

     The Board of Directors has fixed the close of business on April 20, 2001 as
the record date for the determination of stockholders  entitled to notice of and
to vote at the Annual Meeting and at any  adjournments  thereof.  A list of such
stockholders  will be available for  inspection  at the principal  office of the
Company.

     All  stockholders  are  cordially  invited to attend  the  Annual  Meeting.
However,  to ensure your  representation,  you are requested to complete,  sign,
date and return the enclosed  proxy as soon as possible in  accordance  with the
instructions on the proxy card. A return addressed envelope is enclosed for your
convenience.  Any  stockholder  attending the Annual  Meeting may vote in person
even  though the  stockholder  has  returned a proxy  previously.  Your proxy is
revocable in accordance with the procedures set forth in the Proxy Statement.

                                            BY ORDER OF THE BOARD OF DIRECTORS



                                            Michael L. Knapp
                                            ------------------------------------
                                            Secretary
Cupertino, California
April 25, 2001





                          MISSION WEST PROPERTIES, INC.
                               10050 Bandley Drive
                           Cupertino, California 95014
                              ---------------------

                                 PROXY STATEMENT
                              ---------------------

                               GENERAL INFORMATION

     This Proxy  Statement is furnished in connection  with the  solicitation by
the Board of Directors of Mission West Properties,  Inc., a Maryland corporation
(the "Company"),  of proxies, in the accompanying form, to be used at the Annual
Meeting of  Stockholders to be held at 10:00 a.m., PDT, on May 17, 2001 at 10050
Bandley Drive, Cupertino,  California 95014 and any postponement or adjournments
thereof (the "Meeting").

     This Proxy  Statement  and the  accompanying  proxy are being  mailed on or
about  April 25, 2001 to all  stockholders  entitled to notice of and to vote at
the Meeting.

                       SOLICITATION AND VOTING PROCEDURES

     Shares represented by valid proxies in the form enclosed,  received in time
for use at the Meeting and not revoked at or before the  Meeting,  will be voted
at the  Meeting.  The  presence,  in  person or by proxy,  of the  holders  of a
majority of the  outstanding  shares of the Company's  common  stock,  par value
$.001 per share  ("Common  Stock"),  is necessary to  constitute a quorum at the
Meeting.  Holders of Common Stock are  entitled to one vote on all matters.  The
Company  will  tabulate  stockholder  votes,  and an officer of the Company will
tabulate votes cast in person at the Meeting.  With respect to the tabulation of
proxies  for  purposes  of  constituting  a quorum,  abstentions  are treated as
present,  but will not be counted as votes cast at the Meeting  with  respect to
any proposal and will have no effect on the result of the vote.

     Assuming the presence of a quorum,  the affirmative  vote of a plurality of
the votes cast at the Meeting and  entitled to vote is required for Proposal No.
1 regarding the election of directors.  An affirmative  vote of the holders of a
majority  of the votes  cast  affirmatively  or  negatively  at the  Meeting  is
necessary  for  approval  of  Proposal  No.  2  to  ratify  the  appointment  of
independent auditors.  All proxies will be voted as specified on the proxy cards
submitted by stockholders,  if the proxy is properly executed and is received by
the  Company  before the close of voting at the  Meeting or any  adjournment  or
postponement  thereof. If no choice has been specified,  a properly executed and
timely proxy will be voted for  Proposals  Nos. 1 and 2, which are  described in
detail elsewhere in this Proxy Statement.

     The close of  business  on April 20, 2001 has been fixed as the record date
for  determining  the  stockholders  entitled  to  notice  of and to vote at the
Meeting.  As of that date,  the Company had  17,049,953  shares of Common  Stock
outstanding and entitled to vote.

     The cost of  soliciting  proxies,  including  expenses in  connection  with
preparing  and mailing this Proxy  Statement,  will be borne by the Company.  In
addition,   the  Company  will  reimburse  brokerage  firms  and  other  persons
representing  beneficial owners of Common Stock for their expenses in forwarding
proxy material to such beneficial owners. Solicitation of proxies by mail may be
supplemented  by telephone,  telegram,  telex and other  electronic  means,  and
personal solicitation by the directors, officers or employees of the Company. No
additional  compensation  will be paid to  directors,  officers or employees for
such  solicitation.  The Company's Annual Report on Form 10-K for the year ended
December 31, 2000 is being mailed to the stockholders with this Proxy Statement.
Only one

                                      - 1 -


Annual Report and Proxy  Statement is being  delivered to multiple  stockholders
sharing an address unless the Company has received  contrary  instructions  from
one or more of the  stockholders.  The Company will deliver  promptly a separate
copy of the Annual Report and Proxy  Statement to any  stockholder at the shared
address who requests them by contacting  the Company at the address or telephone
number set forth below.

                      VOTING ELECTRONICALLY OR BY TELEPHONE

     A number  of  brokerage  firms and  banks  are  participating  in a program
provided through ADP Investor  Communication  Services that offers telephone and
Internet  voting  options.  If your shares are held in an account at a brokerage
firm or bank  participating  in the ADP  program,  you may vote those  shares by
calling the  telephone  number  which  appears on your voting form or though the
Internet in accordance  with  instructions  set forth on the voting form.  Votes
submitted  through the Internet or by telephone  through the ADP program must be
received by midnight on May 16, 2001.

     The Internet and telephone  voting  procedures are designed to authenticate
stockholders'   identities,   to  allow   stockholders   to  communicate   their
authorization  of a  proxy  to vote  their  shares  and to  confirm  that  their
instructions  have been properly  recorded.  The Company has been advised by its
counsel that the procedures  that have been put in place are consistent with the
requirements of applicable law. Stockholders  communicating voting authorization
via the Internet through ADP Investor  Communication  Services should understand
that there may be costs associated with electronic access, such as usage charges
from Internet access providers and telephone  companies,  that would be borne by
the stockholder.

                             REVOCABILITY OF PROXIES

     You can revoke  your proxy at any time  before the voting at the Meeting by
sending a properly  signed written notice of your revocation to the Secretary of
the Company,  by submitting  another  proxy that is properly  signed and bears a
later date or by attending  the Meeting and voting in person.  Attendance at the
Meeting  will not  itself  revoke  an  earlier  submitted  proxy.  Requests  for
additional  copies of the Annual  Report and Proxy  Statement to be delivered to
stockholders  with a shared  address may be made by calling the Company at (408)
725-0700.  You should  direct any written  notices of  revocation,  requests for
additional  copies  of the  Annual  Report  and  Proxy  Statement,  and  related
correspondence   to:  Mission  West  Properties,   Inc.,  10050  Bandley  Drive,
Cupertino, California 95014, Attention: Secretary.

                                      - 2-



                                   MANAGEMENT

                        DIRECTORS AND EXECUTIVE OFFICERS

     The directors and executive officers of Mission West Properties, Inc. as of
March 31, 2001 are as follows:



Name                            Age          Positions with the Company
- --------------------------      ---          -----------------------------------------------------------
                                      
Carl E. Berg                    63           Chairman of the Board, Chief Executive Officer, & President
Wayne N. Pham                   31           Vice President of Finance and Controller
John C. Bolger (1)              54           Director
William A. Hasler (1)           58           Director
Lawrence B. Helzel (1)          53           Director


(1)  Member  of  the  Audit  Committee,  the  Compensation  Committee,  and  the
     Independent Directors Committee.

The  following is a  biographical  summary of the  experience  of our  executive
officers and directors:

     Mr. Berg has served as Chief Executive  Officer,  President and Director of
the  Company  since  September  1997.  Since  1979,  Mr. Berg has been a general
partner of Berg & Berg  Developers and has been a director and officer of Berg &
Berg Enterprises, Inc. since its inception. Mr. Berg is also a director of Focus
Enhancements,  Inc., Valence  Technology,  Inc. and System Integrated  Research,
Ltd.

     Mr.  Pham  joined  the  Company  on March 14,  2000 as  Controller  and was
promoted to Vice  President  of Finance in October  2000.  He was the  Corporate
Accountant and Accounting Manager at AvalonBay Communities, Inc., a multi-family
apartment REIT, from 1995 to 1999. Prior to that he worked at Lau CPA Services.

     Mr. Bolger  became a director of the Company on March 30, 1998.  Mr. Bolger
is a private  investor.  He was Vice President of Finance and  Administration of
Cisco Systems,  Inc. and is currently retired.  Mr. Bolger is also a director of
Integrated Device Technology, Inc., JNI Corporation,  Sanmina Corporation,  TCSI
Corporation and Wind River Systems, Inc.

     Mr. Hasler became a director of the Company on December 4, 1998.  For seven
years, Mr. Hasler was Dean of Haas School of Business, University of California,
Berkeley.  He retired as Dean  Emeritus  and assumed  the  position of Co-CEO of
Aphton  Corporation,  a public  pharmaceutical  company.  Mr.  Hasler  is also a
director of Aphton, Solectron, Walker Interactive, and TCSI Corporation. He is a
public  governor of the Pacific Stock and Options  Exchange and a trustee of the
Schwab Funds.

     Mr. Helzel became a director of the Company on December 4, 1998. Mr. Helzel
is a general partner of Helzel Kirshman, L.P., a private investment partnership.

                                      - 3 -



NUMBER TERMS AND ELECTION OF DIRECTORS

     The Company's Bylaws currently provide for a Board of Directors  consisting
of four directors.  Each director will serve for a term of one year or until the
next annual  meeting at which  directors  are  elected and until the  director's
successor  is  elected  and  qualifies.  In  the  election  of  directors,  each
stockholder  is entitled to one vote for each share of Common Stock held by such
shareholder.

MEETINGS OF DIRECTORS

     Until  such time as Carl E.  Berg,  Clyde J.  Berg,  the  members  of their
respective  immediate  families and certain entities  controlled by Carl E. Berg
and/or Clyde J. Berg, which are Berg & Berg Enterprises, Inc., Baccarat Cambrian
Partnership,  Baccarat  Fremont  Developers  LLC,  and  DeAnza  Office  Partners
(collectively,  the "Berg Group") and their  affiliates  (other than the Company
and Mission West Properties, L.P., Mission West Properties, L.P. I, Mission West
Properties,  L.P. II or Mission West  Properties,  L.P. III  (collectively,  the
"Operating  Partnership")),  in the  aggregate,  own less than 15% of the voting
stock of the Company  (including  without  limitation  upon the  exercise of all
outstanding  warrants,  options,  convertible  securities  and  other  rights to
acquire  voting  stock  of the  Company,  and all  O.P.  units  exchangeable  or
redeemable for Common Stock or other voting stock of the Company  without regard
to any ownership limit set forth in the Charter, the Bylaws or by agreement),  a
majority  of the  directors,  including  Carl E. Berg or an  individual  whom he
designates  to replace  him as a director on the Board of  Directors  (the "Berg
Designee"),  shall be required  to (i) hold a meeting of the Board of  Directors
which is not attended by Carl E. Berg or the Berg  Designee  (unless Mr. Berg or
the Berg  Designee  consents  in writing to the holding of such  meeting),  (ii)
approve any amendment to the Company's  Charter or Bylaws,  or (iii) approve any
merger,  consolidation or sale of all or substantially  all of the assets of the
Company or the Operating Partnerships.

     Until the date on which the Berg Group and their affiliates (other than the
Company and the Operating  Partnership)  own less than 15% of the  fully-diluted
number of shares, all meetings of the Board of Directors require the presence of
Carl E. Berg or in the  event of his  death,  disability  or other  event  which
results  in Mr.  Berg no  longer  being a  director,  the  presence  of the Berg
Designee.  Mr.  Berg  shall  submit a  written  statement  identifying  the Berg
Designee to the Company from time to time to permit  identification  of the Berg
Designee in the event that death, disability or other event results in a vacancy
on the Board of Directors  due to Mr.  Berg's  inability to serve as a director.
Mr. Berg may amend the statement at his sole discretion.

COMPENSATION OF DIRECTORS

     The  Company  pays its  directors,  who are not  officers,  fees for  their
services as directors. They receive annual compensation of $15,000 plus a fee of
$1,000 for  attendance  (in person or by telephone) at each meeting of the Board
of Directors,  but not for committee  meetings.  Officers of the Company who are
also directors will not be paid any directors' fees.

     Each non-employee  member of the Board of Directors who became or becomes a
member of the Board of Directors  after November 10, 1997, the date on which the
1997 Stock Option Plan (the "Option Plan") was approved by the  stockholders  of
the  Company,  automatically  receives a grant of an option to  purchase  50,000
shares of Common  Stock at an  exercise  price  equal to 100% of the fair market
value of the Common  Stock at the date of grant of such option upon  joining the
Board of Directors. Such options become exercisable cumulatively with respect to
1/48th of the  underlying  shares on the first day of each month  following  the
date of grant.  In October 2000, an  additional  32,000  options were granted to
each director and become  exercisable  with respect to 1/16th of the  underlying
shares on the first day of each

                                      - 4 -


quarter  following the date of grant.  Generally,  the options must be exercised
while the optionee remains a director.

COMMITTEES OF THE BOARD OF DIRECTORS AND MEETINGS

     The  Company's  Board of  Directors  has  standing  Audit and  Compensation
Committees.  The Audit  Committee  currently has three members:  John C. Bolger,
William  A.  Hasler and  Lawrence  B.  Helzel,  who became a member of the Audit
Committee in April 2000. The Compensation Committee currently has the same three
members.

     The Board of Directors has an Independent  Directors Committee comprised of
Messrs. Bolger, Hasler and Helzel. This committee is responsible for acting upon
proposed  transactions  between  the Company and members of the Berg Group under
the terms of certain agreements between the Company and such Berg Group members.
See "Certain Relationships and Related Transactions."

     During the fiscal year ended December 31, 2000, there were four meetings of
the Board of Directors, three meetings of the Audit Committee and one meeting of
the Compensation  Committee of the Board of Directors.  In addition, the members
of the  Board of  Directors,  the  Compensation  Committee  and the  Independent
Directors Committee acted at various times by unanimous written consent pursuant
to Maryland law.

                                      - 5 -




                             EXECUTIVE COMPENSATION

SUMMARY COMPENSATION TABLE

     The following Summary Compensation Table sets forth-summary  information as
to compensation  received by the Company's  Chief Executive  Officer and each of
the other most highly compensated persons who were serving as executive officers
or directors of the Company as of December 31, 2000.




                                                                                            Long-Term
                                                                                           Compensation
                                               Annual Compensation                            Awards
                                              -------------------------------------------  ------------
                                                                                            Securities
                                                                           Other Annual     Underlying      All Other
Name and Principal Position         Year       Salary       Bonus       Compensation (1)     Options      Compensation
- ------------------------------     ------     --------     -------     ------------------  ------------  --------------
                                                                                             
Carl E. Berg                        2000      $100,000      $  --          $22,500                 --           --
Chief Executive Officer and         1999       100,000         --           15,000                 --           --
President                           1998       100,000         --               --                 --           --

Wayne N. Pham                       2000        94,000         --               --            152,000           --
Vice President and Controller       1999            --         --               --                 --           --
                                    1998            --         --               --                 --           --


- --------------------------
(1)  Employer contribution to 401(k) plan.

                                      - 6-




AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END VALUES

     The following table provides information  regarding the aggregate exercises
of options by each of the named  executive  officers.  In  addition,  this table
includes  the number of shares  covered by both  exercisable  and  unexercisable
stock options as of December 31, 2000, and the values of "in-the-money" options,
which values  represent the positive  spread  between the exercise  price of any
such options and the fiscal year-end value of the Company's Common Stock.



                                                                  Number of Securities           Value of the Unexercised
                                                                 Underlying Unexercised           In-The-Money Options at
                                  Shares                      Options at December 31, 2000        December 31, 2000 (2)
                               Acquired on       Value       ------------------------------  ------------------------------
                                Exercise      Realized (1)    Exercisable    Unexercisable    Exercisable    Unexercisable
                              -------------  --------------  -------------  ---------------  -------------  ---------------
                                                                                            

Carl E. Berg..............           --             N/A            N/A              N/A            N/A              N/A


Wayne N. Pham.............           --             N/A            N/A          152,000            N/A         $513,760


- -------------------
(1)  The value  realized  represents  the  aggregate  market value of the shares
     covered by the option on the date of exercise less the  aggregate  exercise
     price paid by the executive officer.
(2)  The value of unexercised  in-the-money options at fiscal year end assumes a
     fair market value for the  Company's  Common  Stock of $13.88,  the closing
     market  price per share of the  Company's  Common  Stock as reported on the
     American  Stock Exchange on December 29, 2000, the last trading day for the
     year.

                                      - 7 -





                                 SHARE OWNERSHIP

     The following  table sets forth certain  information  as of March 15, 2001,
concerning the ownership of Common Stock by (i) each  stockholder of the Company
known  by  the  Company  to be the  beneficial  owner  of  more  than  5% of the
outstanding  shares of Common  Stock,  (ii) each current  member of the Board of
Directors  of the  Company,  (iii) each  executive  officer and  director of the
Company  named in the Summary  Compensation  Table  appearing  under  "Executive
Compensation" below and (iv) all current directors and executive officers of the
Company as a group.

     The Company has relied on information  supplied by its officers,  directors
and certain shareholders and on information contained in filings with the SEC.



                                                                                                Percent of
                                                                                                all Shares
                                                                                                of Common
                                                                                                  Stock             Percent of
                                              Number of     Percent of                          (Assuming           All Shares
                                               Shares       All Shares                          Exchange of         of Common
                                            Beneficially    of Common      Number of O.P.        Holder's           Stock/O.P.
Name                                          Owned (1)       Stock           Units             O.P. Units)(2)     Units (1)(2)
- -------------------------------------------------------------------------------------------------------------------------------
                                                                                                      
Executive Officers and Directors:
Carl E. Berg                                  50,000(4)(10)       *         55,537,158(5)(10)      76.58%             55.24%
   President, Chief Executive Officer
   and Director
Wayne N. Pham                                 16,500(12)          *                 --                 *                  *
   Vice President and Controller
John C. Bolger, Director                      66,776(6)           *                 --                 *                  *
   96 Sutherland Drive
   Atherton, CA 94027
William A. Hasler, Director                   36,218(7)           *                 --                 *                  *
   c/o Aphton Corporation
   1 Market Street, Spear Tower, Ste. 1850
   San Francisco, CA 94105
Lawrence B. Helzel, Director                 196,218(3)        1.15%                --              1.15%                 *
   c/o Helzel Kirshman, LP
   5550 Redwood Road, Suite 4
   Oakland, CA 94619
5% Stockholders:
J.P. Morgan Chase & Company                1,812,000(11)      10.63%                --             10.63%              1.80%
   270 Park Avenue
   New York, NY 10017
Clyde J. Berg                                      0              *         36,637,696(8)(9)       68.24%             36.41%
   c/o Berg & Berg Developers
   10050 Bandley Drive
   Cupertino, CA  95014
Berg & Berg Enterprises, Inc. (9)                  0              *         10,789,383             38.76%             10.72%
   10050 Bandley Drive
   Cupertino, CA  95014
All Directors and Officers as a group        365,712(10)       2.14%        55,537,158(10)         77.01%             55.56%
   (5 persons)



* Less than 1%.

                                      - 8 -




(1)  Beneficial  ownership is  determined  in  accordance  with the rules of the
     Securities and Exchange  Commission  which generally  attribute  beneficial
     ownership of  securities to persons who possess sole or shared voting power
     and/or  investment  power with  respect to those  securities  and  includes
     securities which such person has the right to acquire beneficial  ownership
     within 60 days of March 15, 2001. Unless otherwise  indicated,  the persons
     or entities  identified in this table have sole voting and investment power
     with respect to all shares shown as beneficially  owned by them. Percent of
     all shares of common  stock  calculations  are based on  17,049,953  shares
     outstanding  as of  March  15,  2001.  Percent  of  all  shares  of  common
     stock/O.P.  Units  calculations  are based on 100,625,980  shares of common
     stock and O.P. Units exchangeable for common stock as of March 15, 2001.

(2)  Assumes O.P.  Units are exchanged for shares of common stock without regard
     to (i) whether such O.P.  Units may be exchanged for shares of common stock
     within  60 days of  March  15,  2001,  and  (ii)  certain  ownership  limit
     provisions   set  forth  in  the   Company's   Articles  of  Amendment  and
     Restatement.

(3)  Includes  36,218 shares of common stock  issued/to be issued on exercise of
     options.  Does not  include  45,782  shares of  common  stock  issuable  on
     exercise of the "Non-Employee  Director Grant Pursuant to 1997 Stock Option
     Plan."

(4)  Mr. Berg  disclaims  beneficial  ownership of 49,738 shares of Common Stock
     held by him as a trustee under various  pension and profit  sharing  plans.
     Such shares are not included  herein.  Mr. Berg has no  investment  control
     over such shares.

(5)  Includes O.P. Units in which Mr. Berg has a pecuniary  interest  because of
     his  status  as a  limited  partner  in the  operating  partnerships.  Also
     includes  an  additional  14,028,585  shares  of  Common  Stock  held by or
     issuable  on  exchange  of O.P.  Units  beneficially  owned  by Berg & Berg
     Enterprises,  Inc. and King Ranch  Partnership,  and  11,425,293  shares of
     common stock  issuable on exchange of O.P. Units held by West Coast Venture
     Capital,  Limited,  L.P.,  because  Mr.  Berg is an  executive  officer and
     director of the sole general partner,  West Coast Venture Capital, Inc. Mr.
     Berg  disclaims  beneficial  interest  in any shares or O.P.  Units  deemed
     beneficially owned by Kara Ann Berg, his daughter,  Carl Berg Child's Trust
     UTA dated June 2, 1978 and the 1981 Kara Ann Berg Trust.

(6)  Includes  44,554 shares of common stock  issued/to be issued on exercise of
     options.  Does not  include  37,446  shares of  common  stock  issuable  on
     exercise of the "Non-Employee  Director Grant Pursuant to 1997 Stock Option
     Plan."

(7)  Includes  36,218 shares of common stock  issued/to be issued on exercise of
     options.  Does not  include  45,782  shares of  common  stock  issuable  on
     exercise of the "Non-Employee  Director Grant Pursuant to 1997 Stock Option
     Plan."

(8)  Includes O.P. Units in which Mr. Berg has a pecuniary  interest  because of
     his  status  as a  limited  partner  in the  operating  partnerships.  Also
     includes  L.P.  Units held by Mr. Berg as trustee of the Carl Berg  Child's
     Trust UTA  dated  June 2,  1978 and the 1981  Kara Ann Berg  Trust,  and an
     additional  14,028,585  shares  of  Common  Stock  held by or  issuable  on
     exchange of O.P. Units beneficially owned by Berg & Berg Enterprises,  Inc.
     and  King  Ranch  Partnership.  This  does not  include  any  share  deemed
     beneficially  owned by Sonya L. Berg and Sherri L. Berg, his daughters,  as
     to which he disclaims beneficial ownership.

(9)  Carl E. Berg is an  executive  officer and  director and Clyde J. Berg is a
     director of Berg & Berg  Enterprises,  Inc. With members of their immediate
     families, the Messrs. Berg beneficially owns, directly and indirectly,  all
     of the O.P. Units of Berg & Berg Enterprises, Inc.

(10) Current officers and directors include Carl E. Berg, Wayne N. Pham, John C.
     Bolger, William A. Hasler, and Lawrence B. Helzel. See Notes 3 through 8.

(11) J.P. Morgan Chase & Co. is the beneficial owner on behalf of other persons.
     No such  person is known to have an  interest in more than 5% of the common
     stock reported.

(12) Includes 16,500 shares of common stock to be issued on exercise of options.
     Does not include 135,500 shares of common stock issuable on exercise of the
     "Employee Grant Pursuant to 1997 Stock Option Plan."

                                      - 9 -




CONTRACTUAL AND OTHER CONTROL ARRANGEMENTS

     SPECIAL BOARD VOTING PROVISIONS. The Charter and Bylaws provide substantial
control rights for the Berg Group.  These rights include a requirement  that Mr.
Berg or his designee as director approve certain fundamental  corporate actions,
including amendments to the Charter and Bylaws and any merger,  consolidation or
sale of all or substantially all of our assets. In addition,  the Bylaws provide
that a quorum  necessary to hold a valid meeting of the board of directors  must
include Mr. Berg or his  designee.  The rights  described  in the two  preceding
sentences  apply only as long as the Berg Group  members  and their  affiliates,
other than the Company and the Operating Partnerships,  beneficially own, in the
aggregate,  at least 15% of the  outstanding  shares of Common  Stock on a fully
diluted basis,  which is calculated  based on all  outstanding  shares of Common
Stock and all shares of Common Stock that could be acquired upon the exercise of
all outstanding options to acquire the Company's stock, as well as all shares of
Common Stock issuable upon exchange of all O.P.  Units.  In addition,  directors
representing  more than 75% of the entire board of directors  must approve other
significant  transactions,   such  as  incurring  debt  above  certain  amounts,
acquiring  assets and  conducting  business  other than  through  the  Operating
Partnerships.

     BOARD OF DIRECTORS REPRESENTATION. The Berg Group members have the right to
designate  two of the director  nominees  submitted by the Board of Directors to
stockholders  for  election,  as  long  as the  Berg  Group  members  and  their
affiliates, other than the Company and the Operating Partnerships,  beneficially
own, in the aggregate, at least 15% of our outstanding shares of common stock on
a fully diluted basis. If the fully diluted  ownership of the Berg Group members
and their  affiliates  is less than 15% but is at least 10% of the common stock,
the Berg Group members have the right to designate one of the director  nominees
submitted by the Board of Directors to stockholders  for election.  Its right to
designate  director  nominees  affords  the Berg Group  substantial  control and
influence over the management and direction of our corporation.

     SUBSTANTIAL  OWNERSHIP  INTEREST.  The Berg Group currently owns O.P. Units
representing  approximately  78.8%  of the  equity  interests  in the  operating
partnerships.  The O.P.  Units may be  converted  into  shares of Common  Stock,
subject to  limitations  set forth in the  Charter  (including  an  overall  20%
ownership limitation), and other agreements with the Berg Group. Upon conversion
these shares would  represent  voting  control of the Company.  The Berg Group's
ability  to  exchange  its O.P.  Units  for  Common  Stock  permits  it to exert
substantial influence over the management and direction of the Company.

     LIMITED  PARTNER  APPROVAL  RIGHTS.  Mr. Berg and other  limited  partners,
including other members of the Berg Group, may restrict the Company's operations
and  activities  through  rights  provided  under the terms of the  Amended  and
Restated  Agreement of Limited  Partnership  which governs each of the Operating
Partnerships and the Company's legal relationship to each Operating  Partnership
as its general partner.  Matters requiring approval of the holders of a majority
of the O.P. Units,  which necessarily would include the Berg Group,  include (i)
the amendment,  modification or termination of any of the Operating  Partnership
Agreements;  (ii)  the  transfer  of any  general  partnership  interest  in the
Operating Partnerships,  including, with certain exceptions, transfers attendant
to any  merger,  consolidation  or  liquidation  of our  corporation;  (iii) the
admission of any  additional  or  substitute  general  partners in the Operating
Partnerships;  (iv) any other change of control of the  Operating  Partnerships;
(v) a general  assignment  for the benefit of creditors or the  appointment of a
custodian,   receiver  or  trustee  of  any  of  the  assets  of  the  Operating
Partnerships;  and (vi) the  institution  of any  bankruptcy  proceeding for any
Operating Partnership.

                                     - 10 -


     In  addition,  as long as the Berg  Group  members  and  their  affiliates,
beneficially  own, in the aggregate,  at least 15% of the outstanding  shares of
common  stock on a fully  diluted  basis,  the consent of the  limited  partners
holding  the  right  to vote a  majority  of the  total  number  of  O.P.  Units
outstanding  is also required with respect to (i) the sale or other  transfer of
all or substantially all of the assets of the Operating Partnerships and certain
mergers and business  combinations  resulting in the complete disposition of all
O.P. Units;  (ii) the issuance of limited  partnership  interests  senior to the
O.P. Units as to distributions,  assets and voting; and (iii) the liquidation of
the Operating Partnerships.

                                     - 11 -




COMPARISON OF SHAREHOLDER RETURN ON INVESTMENT

     The following  line graph  compares the change in the Company's  cumulative
stockholder  return on its shares of Common Stock to the cumulative total return
of the NAREIT  Equity REIT Total Return Index  ("NAREIT  Equity  Index") and the
Standard & Poor's 500 Stock Index ("S & P 500 Index") from  December 31, 1998 to
December 31, 2000. The line graph starts December 31, 1998; however, the Company
started  trading under the Berg Group  ownership on December 8, 1998.  The graph
assumes that the value of the investment in the Company's  common stock was $100
at December 31, 1998 and that all dividends were reinvested.  The common stock's
price on December 31, 1998 was $6.75. The Company obtained the information about
the NAREIT Equity Index and S & P 500 INDEX from each entity  respectively,  and
has assumed that the information is reliable, but cannot assume its accuracy.


                                [GRAPH OMITTED]




                 Mission West
               Properties, Inc.          S & P 500          NAREIT EQUITY INDEX
               ----------------          ---------          -------------------
                                                        
1998               $100.00                $100.00                 $100.00
1999               $123.23                $119.53                 $ 95.38
2000               $233.98                $ 86.86                 $126.37


(1)  Due to the  reorganization  of  the  Company  by the  Berg  Group  and  the
     effective  liquidation of the Company's assets during this same period, the
     Company has not included stock price  performance  for the years ended 1996
     and 1997 in the above chart.  For the year ended 1996, the Company's  stock
     price performance was $255.21.  For the same time period,  the Russell 2000
     and peer group were $176.14 and $233.23,  respectively.  For the year ended
     1997, the Company's stock price performance was $364.33.  For the same time
     period,  the  Russell  2000 and a peer  group  were  $215.52  and  $320.39,
     respectively.

(2)  The  stock  price  performance  shown  in  the  graph  is  not  necessarily
     indicative  of  future   performance   of  the   Company's   common  stock.
     Notwithstanding  anything to the contrary set forth in any of the Company's
     previous or future filings under the Securities Act of 1933, as amended, or
     the  Securities  Exchange Act of 1934, as amended,  that might  incorporate
     this Proxy  Statement  on future  filings  made by the Company  under those
     statutes, the Compensation Committee report and Stock Performance Graph are
     not deemed filed with the Securities  Exchange  Commission and shall not be
     deemed incorporated by reference into any such filings.

                                     - 12 -




                 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     Set forth below is a summary of certain material transactions since July 1,
1998 between the Company and any of its directors, executive officers or holders
of more than 5% of the  Company's  Common  Stock,  or between  the  Company  and
persons in which directors,  executive officers or such stockholders have direct
or indirect material interests.

PROPERTY  ACQUISITIONS  AND FINANCIAL  TRANSACTIONS  BETWEEN THE COMPANY AND THE
BERG GROUP

     Through a series of  transactions  in 1997 and 1998, the Company became the
vehicle for substantially  all of the Silicon Valley R&D property  activities of
the Berg Group,  which includes Mr. Berg, his brother Clyde J. Berg,  members of
their  families  and a number of  entities  in which  they have  controlling  or
substantial  ownership  interests.  The  Company  owns these  former  Berg Group
properties,  as  well as the  rest  of its  properties,  through  the  Operating
Partnerships,  of which the Company is the sole general partner. Through various
property  acquisition  agreements with the Berg Group, the Company has the right
to purchase,  on  pre-negotiated  terms, R&D and other types of office and light
industrial  properties that the Berg Group develops in the future in California,
Oregon and Washington.

     PENDING PROJECTS ACQUISITION  AGREEMENT.  In December 1998, the Company had
entered into the pending projects acquisition agreement with members of the Berg
Group,  under  which the  Company  agreed to acquire  approximately  1.0 million
square feet upon the  completion and leasing of identified  pending  development
projects  upon the  following  material  terms:  (i) the  acquisition  price was
payable in cash or, at the option of the Berg  Group,  in O.P.  Units  valued at
$4.50 per O.P. Unit, which was the price per share of the Company's common stock
in May  1998,  when the  Company  agreed to the  terms of the  pending  projects
acquisition  agreement;  (ii) the Berg Group built and delivered  each completed
and  fully-leased  R&D  property  in the  pending  development  projects  to the
operating  partnerships  at an acquisition  price equaled to the average monthly
rental rate per square foot over the term of the lease divided by an agreed upon
capitalization  rate, which ranged from 14.0% to 17.0%, minus the amount of debt
encumbering the property; (iii) the closing for the acquisition of an individual
R&D property within a project  occurred only when the building was completed and
leased, unless otherwise agreed by the parties; (iv) leases were on commercially
reasonable terms and conditions;  and (v) all actions taken by the Company under
the pending  projects  acquisition  agreement were approved by a majority of the
members of the Independent Directors Committee. The pending projects acquisition
agreement was  terminated  in December 2000 when the last property  contemplated
for development was completed, leased, and purchased by the Company.

     BERG LAND HOLDINGS OPTION AGREEMENT.  In December 1998, the Company entered
into the Berg land  holdings  option  agreement  under which the Company has the
option to acquire any fully leased future R&D,  office and  industrial  property
developed by the Berg Group on land currently owned or optioned, or acquired for
these purposes in the future,  directly or indirectly,  by Carl E. Berg or Clyde
J. Berg. The principal terms of the agreement include the following:

     -    So long as the Berg Group members and their affiliates own or have the
          right to acquire shares  representing at least 65% of our common stock
          on a fully  diluted  basis the Company will have the option to acquire
          any  building  developed  by any  member of the Berg Group on the land
          subject to the agreement at such time as the building has been leased.
          Upon the  exercise of the option,  the option price will equal the sum
          of:

                                     - 13 -


          (1)  the full construction cost of the building; plus
          (2)  10% of the full construction cost of the building; plus
          (3)  interest   at  LIBOR  plus  1.65%  on  the  amount  of  the  full
               construction  cost of the  building  for the period from the date
               funds were  disbursed  by the  developer  to the close of escrow;
               plus
          (4)  the  original  acquisition  cost  of  the  parcel  on  which  the
               improvements will be constructed; plus
          (5)  10% per annum of the amount of the original  acquisition  cost of
               the parcel  from the later of  January  1, 1998 and the  seller's
               acquisition date, to the close of escrow; minus
          (6)  the  aggregate  principal  amount  of all  debt  encumbering  the
               acquired property.

     -    The  acquisition  cost,  net of any debt,  will be payable in cash, or
          O.P.  Units  valued at the average  closing  price of the Common Stock
          over the  30-trading-day  period preceding the acquisition or in cash,
          at the option of the Berg Group.

     -    The Company must assume all tax assessments.

     -    If the Company  elects not to exercise  the option with respect to any
          property,  the Berg Group may hold and lease the  property for its own
          account, or may sell it to a third party.

     -    All action taken by the Company  under the Berg land  holdings  option
          agreement  must  be  approved  by a  majority  of the  members  of the
          Independent Directors Committee.

     The  following  table  presents  certain  information  concerning  projects
acquired under the pending projects  acquisition  agreement  ("Pending") and the
Berg land holdings option agreement ("Berg Land"):




                               Approximate       Actual                                          O.P.
                              Rentable Area    Acquisition     Acquisition     Cash/Debt        Units
Property                      (square feet)      Period           Price       Assumption       Issued
- ---------------------------  ---------------  -------------  --------------  -------------  -------------
                                                                              
Pending: (1)
   1650 Richard Avenue            52,800         Q3 1998      $  4,198,000    $ 2,436,261        405,166
   6810 Santa Teresa Blvd         54,996         Q1 1999         8,558,000      3,612,870        694,030
   1065 - 1105 L'Avenida         515,700         Q2 1999       156,107,000     57,057,700     13,206,629
   1750 Automation Pkwy           80,641         Q3 1999        15,963,000      3,500,000      1,455,578
   1700 Richard Avenue            58,783         Q3 1999         5,756,000      1,058,000        548,637
   1756 Automation Pkwy           80,640         Q1 2000        14,594,000      5,100,000      1,346,480
   1762 Automation Pkwy           61,100         Q2 2000        17,029,000      8,458,260      1,001,213
   1768 Automation Pkwy          110,592         Q4 2000        27,316,000      9,500,000      1,370,443

Berg Land:
   5850 Hellyer Avenue           109,715         Q4 1998         9,494,000      7,880,445        266,898
   5749 Fontanoso Way             77,700         Q4 1999         7,169,394      3,943,924        406,358
   800 Branham Lane              239,000         Q1 2000        18,358,912      6,330,933      1,438,066
   255 Caspian Drive              98,500         Q2 2000        11,637,164      7,000,000        550,079
   5300-5350 Hellyer Ave         160,000         Q2 2000        17,183,541     12,565,936        659,223
   5400 Hellyer Avenue            77,184         Q3 2000         8,598,072      4,136,384        466,377
   45365 Northport Loop           64,218         Q4 2000         8,158,370      1,276,391        538,357

                             ---------------                 --------------  -------------  -------------
                      TOTAL    1,841,569                      $330,120,453   $133,857,104     24,353,534
                             ===============                 ==============  =============  =============


(1)  The  acquisition  price  under  generally  accepted  accounting  principles
     ("GAAP") is based on the closing price of the Company's common stock on the
     closing date of the acquisition.

                                     - 14 -


     In January and February  2001, the Company  acquired two newly  constructed
R&D properties  leased to Celestica Asia, Inc. and ACT  Manufacturing on Hellyer
Avenue in San Jose,  California  consisting  131,500 and 117,740  square feet of
rentable space, respectively, under the Berg land holdings option agreement. The
total   estimated   acquisition   cost  is  $16.5  million  and  $14.4  million,
respectively.

     OTHER  COVENANTS.  The  acquisition  agreement,  Berg land holdings  option
agreement and supplemental agreement to which the Company and the Berg Group, or
Carl  E.  Berg  and  Clyde  J.  Berg,  individually  are  parties  includes  the
undertaking of Carl E. Berg not to directly or indirectly acquire or develop, or
acquire  any  equity  ownership  interest  in any entity  that has an  ownership
interest  in,  any real  estate  zoned or  intended  for use as R&D,  office  or
industrial  properties,  with the  exception of  investments  in  securities  of
publicly traded  companies,  which  securities do not represent more than 10% of
the outstanding  voting securities of such companies,  in California,  Oregon or
Washington  without first disclosing such investment  opportunity to the Company
and making such opportunity available to the Company, subject to the approval of
the Independent  Directors  Committee.  This  restriction  does not apply to any
acquisition  of  the  projects  subject  to  the  pending  projects  acquisition
agreement or completed  buildings  acquired  pursuant to the Berg land  holdings
option agreement or the  supplemental  agreement.  This  restriction  remains in
effect until the date on which both of the following  conditions  are satisfied:
(i) no nominee of the Berg Group is a member of the Board of Directors; and (ii)
the Berg Group and its  affiliates,  other than the  Company  and the  Operating
Partnerships,  beneficially  own less than 25% of the outstanding  Common Stock,
including for these purposes all shares  issuable upon exercise of the rights to
exchange O.P. Units for Common Stock.

     In  addition,  transactions  between the Company and any member of the Berg
Group, or an entity in which a member of the Berg Group holds at least 5% of the
equity interests,  including the Company's election to issue Common Stock or pay
cash in exchange for O.P. Units tendered by the Berg Group are subject to review
and  approval  by  the  Independent   Directors  Committee.   Aside  from  these
restrictions,  the  Berg  Group  is  generally  free  to  conduct  its  business
activities  and will not be required to seek the approval of such  activities or
refer business  opportunities to the Company,  nor will it have any liability to
the Company for its failure to do so.

     ISSUANCE AND  ASSUMPTION  OF DEBT.  As of March 15,  2001,  the Company was
liable for loans aggregating  approximately  $43,820,000 and $11,599,000 payable
to the Berg Group under the line of credit and mortgage loan, respectively,  not
accounting for the two acquisitions  that occurred in the first quarter of 2001.
The Berg Group line of credit is secured by seven properties,  bears interest at
LIBOR plus 1.30  percent,  and the maturity  date has recently  been extended to
March 2002.  The mortgage loan is secured by two  properties,  bears interest at
7.65 percent, and matures in June 2010.

     In September  1998, the Company  assumed a $100 million line of credit with
the Wells  Fargo Bank N.A.  previously  provided to and  guaranteed  by the Berg
Group,  which was reduced to $50 million  subsequently.  The Wells Fargo line of
credit  expired on  February  29,  2000 and was repaid  with  proceeds  from and
replaced by a $50 million line of credit from the Berg Group.  On April 1, 2000,
the $50  million  credit line with the Berg Group was  increased  to $75 million
with all other  terms  remaining  the same.  The Wells  Fargo line of credit was
collateralized by 14 of the Company's  properties and was guaranteed by Mr. Berg
and certain other members of the Berg Group.

     LEASE FROM BERG GROUP. The Company leases its executive offices from Berg &
Berg  Enterprises,  Inc. For the year ended  December 31, 2000, the Company paid
$80,640 to Berg & Berg Enterprises,  Inc. under the terms of the lease agreement
for its executive offices. Effective April 1, 2001, rent was increased to $7,520
per month.

                                     - 15 -



             SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE

     Section 16(a) of the Securities Exchange Act of 1934, as amended,  requires
the Company's  directors  and  officers,  and persons who own more than 10% of a
registered class of the Company's equity securities, to file with the Securities
and Exchange  Commission (the "SEC") initial reports of ownership and reports of
changes in ownership of Common Stock and other equity securities of the Company.
Directors,  officers  and greater  than ten percent  holders are required by SEC
regulation  to furnish the Company with copies of all Section 16(a) reports they
file.

     To the  Company's  knowledge,  based  solely on review of the copies of the
above-mentioned  reports  furnished  to the Company and written  representations
regarding all reportable transactions, during the fiscal year ended December 31,
2000,  all  Section  16(a)  filing  requirements  applicable  to its  directors,
officers and greater than ten percent holders were complied with on time, except
that Carl E. Berg and certain  members of the Berg Group did not timely file one
or more reports on Form 4 that may have been due with  respect to acquired  O.P.
Units issued  pursuant to the Pending  Projects  Acquisition  Agreement and Berg
Land Holdings Option  Agreement.  The acquisitions of these units were otherwise
disclosed in reports filed by the Company on a group Form 4 filing made in April
2001.


                     REPORT ON EXECUTIVE COMPENSATION BY THE
                COMPENSATION COMMITTEE OF THE BOARD OF DIRECTORS

     The Compensation  Committee (the  "Committee")  comprises three independent
members  of the  Board  of  Directors.  The  Company's  Board of  Directors  has
delegated  to the  Committee  responsibility  for  reviewing,  recommending  and
approving  the  Company's  compensation  policies  and  benefits  programs.  The
Committee also has the principal  responsibility  for the  administration of the
company's  stock plans,  including  approving  stock option  grants to executive
officers.

COMPENSATION PHILOSOPHY

     The  Company's  executive  compensation  policy is  designed to attract and
retain qualified executive personnel by providing  executives with a competitive
total  compensation  package  based in large part on their  contribution  to the
financial  and  operational  success of the Company,  the  executive's  personal
performance  and  increases in  stockholder  value as measured by the  Company's
stock price.

COMPENSATION PROGRAM

     The compensation  package for the Company's  executive officers consists of
the following three components:

     BASE SALARY.  The Committee  determines  the base salary of each  executive
based on the  executive's  scope of  responsibility,  past  accomplishments  and
experience and personal performance,  internal comparability  considerations and
data regarding the prevailing  compensation  levels for comparable  positions in
relevant  competing  executive  labor markets.  The Committee may give different
weight to each of these factors for each executive, as it deems appropriate.  In
selecting   comparable   companies  for  the  purpose  of  setting   competitive
compensation for the Company's executives,  the Committee considers many factors
not  directly  associated  with  stock  price  performance,  such as  geographic
location,   annual   revenue  and   profitability,   organizational   structure,
development stage and market capitalization.

                                     - 16 -


     ANNUAL  INCENTIVE  COMPENSATION.  At the present time, the Company does not
have  an  annual  incentive   compensation   program  in  place.   However,  the
Compensation Committee may in the future at the Committee's discretion institute
an annual incentive program.

     STOCK  OPTIONS.  The  Committee  believes  that  granting  stock options to
executives  and other key  employees  on an  ongoing  basis  gives them a strong
incentive to maximize stockholder value and aligns their interests with those of
other stockholders.  The Committee  determines stock option grants to executives
and has  authorized  the Company's CEO to determine  stock option grants for all
other employees,  subject to the Committee's approval of total share allocations
from the Company's  option plan. In determining the size of stock option grants,
the   Committee   considers   the   executive's   current   position   with  and
responsibilities  to the Company,  potential  for increased  responsibility  and
promotion  over the option  term,  tenure with the Company  and  performance  in
recent periods,  as well as the size of comparable  awards made to executives in
similar positions in competing  executive labor markets.  Generally,  each stock
option grant allows the  executive to purchase  shares of the  Company's  common
stock at a price per share  equal to the market  price on the date the option is
granted,  but the  Committee  has the power to grant options at a lower price if
considered  appropriate  under  the  circumstances.   Each  stock  option  grant
generally becomes exercisable,  or vests, in installments over time,  contingent
upon the executive's continued employment with the Company.

     COMPENSATION OF CHIEF EXECUTIVE OFFICER. The annual salary for Mr. Berg was
set in 1997 and first became payable in 1998. The Compensation  Committee has no
plan to adjust his compensation.

     COMPLIANCE WITH INTERNAL REVENUE CODE SECTION 162(M). Section 162(m) of the
Internal  Revenue Code  generally  disallows a tax  deduction  to  publicly-held
companies for compensation  paid to certain  executive  officers,  to the extent
that  compensation  paid to the officer  exceeds $1 million during the Company's
taxable year. the compensation paid to the company's  executive officers for the
year ended December 31, 2000 did not exceed the $1 million limit per officer. In
addition,  the Company's 1997 Stock Option Plan and executive  incentive  option
grants have been structured so that any compensation deemed paid to an executive
officer in connection with the exercise of his or her  outstanding  options with
an  exercise  price per share  equal to the fair  market  value per share of the
Common  Stock on the grant date will qualify as  performance-based  compensation
that will not be subject to the $1 million limitation.  It is very unlikely that
the cash compensation  payable to any of the Company's executive officers in the
foreseeable  future will  approach the $1 million  limit,  and the  Compensation
Committee  does not  expect  to take any  action  at this  time to  modify  cash
compensation   payable  to  the  Company's   executive  officers  to  avoid  the
application of Section 162(m).



                            The Compensation Committee of the Board of Directors

                                                                  John C. Bolger
                                                               William A. Hasler
                                                              Lawrence B. Helzel


                                     - 17 -



           COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

     The  Compensation  Committee of the company's Board of Directors was formed
in December 1998 and currently is comprised of Messrs.  John C. Bolger,  William
A. Hasler and Lawrence B.  Helzel.  None of these  individuals  were at any time
during 2000,  or at any other time,  an officer or employee of the  Company.  No
executive  officer  of the  Company  serves  as a  member  of  the  Compensation
Committee of any other entity that has one or more executive officers serving as
a member of the Company's Board of Directors or Compensation Committee.


                             AUDIT COMMITTEE REPORT

     The Audit Committee reviews,  acts on and reports to the Board with respect
to various  auditing and  accounting  matters,  including  the  selection of the
Company's  independent public accountants,  the scope of the annual audits, fees
to be  paid to the  Company's  accountants,  the  performance  of the  Company's
accountants, the audit report on the Company's consolidated financial statements
following  completion of the audit and the  accounting  practices of the Company
with  respect  to  internal  accounting  and  financial  controls.  The Board of
Directors of the Company adopted an Audit  Committee  Charter on June 9, 2000, a
copy of which is  attached  to this  proxy  statement  as  Exhibit  A. The Audit
Committee is currently comprised of Messrs.  John C. Bolger,  William A. Hasler,
and Lawrence B. Helzel,  all of whom are  independent.  The Audit  Committee met
three times during fiscal year 2000.

     The Audit  Committee  has  reviewed  and  discussed  the audited  financial
statements of the Company for fiscal year 2000 with management and the Company's
independent  public  accountants,   PricewaterhouseCoopers   LLP  ("PWC").   The
Committee  discussed  with PWC matters  required to be discussed by Statement on
Auditing  Standards  No. 61  (Communication  with Audit  Committees).  The Audit
Committee  was  also  provided  by  PWC  the  written  disclosures  required  by
Independence Standards Board Standard No. 1 (Independence Discussions with Audit
Committees), and the Committee discussed with PWC that firm's independence.

     Based on the discussions  with PWC concerning the audit,  the  independence
discussions and the financial  statement  review,  and such other matters deemed
relevant and appropriate by the Audit Committee, the Audit Committee recommended
to the Board that the Company's  financial  statements for the fiscal year ended
December 31, 2000 be included in its 2000 Annual  Report on Form 10-K filed with
the Securities and Exchange Commission.


                                   The Audit Committee of the Board of Directors

                                                                  John C. Bolger
                                                               William A. Hasler
                                                              Lawrence B. Helzel

                                     - 18 -



AUDIT FEES

     The aggregate fees billed by PWC for professional services rendered for the
audit of the Company's  annual  financial  statements  for the fiscal year ended
December 31, 2000 and the reviews of the interim financial  statements  included
in the  Company's  Quarterly  Reports  on Form 10-Q for the  fiscal  year  ended
December 31, 2000 were approximately $90,000.

FINANCIAL INFORMATION SYSTEMS DESIGN AND IMPLEMENTATION FEES

     None.

ALL OTHER FEES

     The aggregate fees billed by PWC for tax services  rendered to the Company,
other than the services described under "Audit Fees" and "Financial  Information
Systems Design and Implementation  Fees," for the fiscal year ended December 31,
2000 were approximately $29,000.

                                     - 19 -





               --------------------------------------------------
                                 PROPOSAL NO. 1:
                              ELECTION OF DIRECTORS
               --------------------------------------------------

     At the Meeting, four directors (constituting the entire Board of Directors)
are to be elected to serve until the next  annual  meeting of  Stockholders  and
until a  successor  for such  director is elected  and  qualified,  or until the
death,  resignation or removal of such director. There are four nominees, all of
whom are currently directors of the Company.

                                    NOMINEES

     Set forth below is information regarding the nominees for election to the
Board of Directors:



            Name                    Position(s) with the Company       First Elected Director
- ------------------------------     ------------------------------     ------------------------
                                                                         
Carl E. Berg                       Chairman of the Board, Chief                 1997
                                   Executive Officer, and President
John C. Bolger                     Director                                     1998
William A. Hasler                  Director                                     1998
Lawrence B. Helzel                 Director                                     1998


     In accordance with the Bylaws,  it is a qualification of two directors that
they be nominated  by the Berg Group and that one such  director be Carl E. Berg
or the Berg  Designee as long as the Berg Group and its  affiliates  (other than
the Company and the Operating Partnership) own at least 15% of the fully-diluted
number of shares.  The Company has been advised by Mr. Berg,  who represents the
Berg Group,  that he will be the only Berg Group  nominee  for  election at this
meeting.

     A  plurality  of the votes cast at the  Meeting is  required  to elect each
nominee as a director.  Unless  authority to vote for any of the nominees  named
above is withheld,  the shares  represented  by the enclosed proxy will be voted
FOR the election as directors of such nominees. Each person nominated has agreed
to serve if elected,  and the Board of  Directors  has no reason to believe that
any nominee will be unavailable or will decline to serve. In the event, however,
that any nominee is unable or declines to serve as a director at the time of the
Meeting,  the proxies  will be voted for any nominee  who is  designated  by the
current Board of Directors to fill the vacancy.

     THE  BOARD  OF  DIRECTORS  RECOMMENDS  THAT THE  STOCKHOLDERS  VOTE FOR THE
ELECTION OF ALL OF THE ABOVE NOMINEES.

                                     - 20 -


               --------------------------------------------------
                                 PROPOSAL NO. 2:
                         INDEPENDENT PUBLIC ACCOUNTANTS
               --------------------------------------------------

     The  Board  of  Directors   has   appointed   PricewaterhouseCoopers   LLP,
independent public accountants, to audit the financial statements of the Company
for the year ending December 31, 2001. The Board of Directors  proposes that the
stockholders ratify this appointment.  The Company expects that  representatives
of  PricewaterhouseCoopers  LLP will be present at the Annual Meeting, will have
the  opportunity  to make a  statement  if they  desire  to do so,  and  will be
available to respond to appropriate questions.

     In the event that stockholders fail to ratify the appointment, the Board of
Directors will reconsider its selection.  Even if the selection is ratified, the
Board of Directors, in its discretion, may direct the appointment of a different
independent  accounting  firm  at any  time  during  the  year if the  Board  of
Directors  determines  that  such  a  change  would  be in  the  Company's  best
interests.

     The  affirmative  vote of a  majority  of the votes cast  affirmatively  or
negatively  at  the  Meeting  is  required  to  ratify  the  appointment  of the
independent public accountants.

     THE  BOARD  OF  DIRECTORS  RECOMMENDS  THAT THE  STOCKHOLDERS  VOTE FOR THE
PROPOSAL TO RATIFY THE SELECTION OF  PRICEWATERHOUSECOOPERS  LLP TO SERVE AS THE
COMPANY'S INDEPENDENT PUBLIC ACCOUNTANTS FOR THE YEAR ENDING DECEMBER 31, 2001.

                                     - 21 -


STOCKHOLDER PROPOSALS FOR 2002 ANNUAL MEETING

     In  addition,   if  you  desire  to  bring  business   (including  director
nominations)  before the Company's  2002 Annual  Meeting,  the Company's  Bylaws
states that it must be received by the Company's Secretary no earlier than [90th
day prior to the date of this year's annual meeting] and no later than [60th day
prior to the date of this year's annual meeting]. For additional requirements, a
stockholder should refer to our Bylaws, Article II, Section 12, "Nominations and
Proposals by  Stockholders,"  a current  copy of which may be obtained  from our
Secretary.  If the  Company  does not  receive  timely  notice  pursuant  to the
Company's  Bylaws,  any  proposal  will be excluded  from  consideration  at the
meeting,  regardless of any earlier notice  provided in accordance with SEC Rule
14a-8.  All  stockholder  proposals  should be addressed to the attention of the
Chief Executive Officer at the principal office of the Company.


OTHER MATTERS

     The  Board of  Directors  knows of no other  matters  to be  presented  for
stockholder action at the Annual Meeting.  However, if other matters do properly
come before the Annual Meeting or any adjournments or postponements thereof, the
Board of Directors  intends that the persons named in the proxies will vote upon
such matters in accordance with the best judgment of the proxy holders.


                                              BY ORDER OF THE BOARD OF DIRECTORS


                                              Michael L. Knapp
                                              ----------------------------------
                                              Secretary
Cupertino, California
April 25, 2001


                                     - 22 -



Exhibit A

                          MISSION WEST PROPERTIES, INC.
                             AUDIT COMMITTEE CHARTER
              AS ADOPTED BY THE BOARD OF DIRECTORS ON JUNE 9, 2000

                                     PURPOSE

The purpose of the Audit  Committee  of the Board of  Directors  of Mission West
Properties  Inc. is to oversee and monitor  the  Company's  financial  reporting
process and systems of internal  controls  regarding  finance and  accounting on
behalf of the Board of Directors.

                       RESPONSIBILITIES OF AUDIT COMMITTEE

The Board of Directors  recognizes that the Company's  management is responsible
for preparing the Company's financial  statements and that independent  auditors
are  responsible for auditing those financial  statements.  In fulfilling  these
responsibilities,   management  and  the  independent  auditors  are  ultimately
accountable to the Audit Committee and the Board of Directors.

Nothing in this Charter should be construed to imply that the Audit Committee is
required to provide or does  provide any  assurance or  certification  as to the
Company's  financial  statements  or as to its  compliance  with laws,  rules or
regulations.  In  order to  fulfill  its  oversight  responsibility,  the  Audit
Committee  must  be  capable  of  conducting  free  and  open  discussions  with
management,  internal and independent  auditors,  employees and others regarding
the quality of the financial statements and the system of internal controls.

The specific duties of the Audit Committee shall be as follows:

Independent Auditors

     1.   Select and evaluate independent auditors, review their performance and
          recommend to the Board of Directors the  appointment or replacement of
          independent  auditors;  and, to review and  recommend  to the Board of
          Directors fee arrangements in connection with such appointments.

     2.   Ensure the auditor's independence by:

          (i)  ensuring that the auditors annually submit to the Audit Committee
               a formal written statement  delineating all relationships between
               the auditors and the Company;

          (ii) actively engaging in a dialogue with the auditors with respect to
               any  disclosed  relationships  or services  that may impact their
               objectivity and  independence,  including the matters required by
               Independence   Standards   Board   Standard  No.  1  Independence
               Discussions  with  Audit  Committees  (as  it  may  be as  may be
               modified or supplemented);

          (iii)reviewing  and  discussing   with  the  Board  of  Directors  any
               relationships  between the auditors and the Company, or any other
               relationship, that may adversely

                                     - 23 -


               affect independence; and, reviewing and approving any significant
               management  consulting  engagements  proposed to be undertaken by
               such auditors on behalf of the Company; and

          (iv) recommending that the Board of Directors take appropriate  action
               in response to the  auditors'  report to satisfy  itself of their
               independence.

     3.   Annually   require   the   auditors   to  confirm  in  writing   their
          understanding of the fact that they are ultimately  accountable to the
          Board of Directors of the Company and its Audit Committee.

     4.   Annually  review the auditors'  proposed  audit plan and approach,  as
          well as staffing and timing of the audit and related matters.

     5.   Obtain from  management,  review and approve,  a description of issues
          and responses  whenever a second  opinion is proposed by management to
          be sought from another outside accountant.

Financial Statements

     6.   Conduct a  post-audit,  pre-issuance  review of the  Company's  annual
          financial   statements,   the  auditor's  opinion  thereon,   and  any
          significant  difficulties or disagreements with management encountered
          during the course of the audit.

     7.   Discuss the annual financial  statements with the appropriate officers
          and/or employees of the Company and with the independent auditors, and
          discuss  with the  auditors  the matters  required to be  discussed by
          relevant auditing standards,  including the quality,  and not just the
          acceptability,  of the accounting  principles and underlying estimates
          used in the statements.

     8.   If the Committee finds the annual financial statements acceptable,  to
          recommend  to the  Board of  Directors  that they be  included  in the
          Company's annual report on Form 10-K.

     9.   Prepare a report to the  shareholders  of the  Company  in each  proxy
          statement,  as required by the rules of the  Securities  and  Exchange
          Commission ("Commission").

     10.  Review with the Company's  financial  management  and the  independent
          auditors  the  quarterly   earnings   releases  and  the  schedule  of
          unrecorded  adjustments to the Company's financial  statements and the
          reasons  underlying the Company's  assessment of the  immateriality of
          such adjustments.

     11.  With regard to quarterly  reports to the  Commission on Form 10-Q, the
          Chairman  of  the  Committee  and/or  any  member  or  members  of the
          Committee  whom he  designates,  shall review with  management and the
          independent  auditor the  financial  statements to be included in such
          filing prior to filing with the Commission.

     12.  Review prior to  publication  or filing and approve such other Company
          financial  information,  including appropriate  regulatory filings and
          releases that include  financial  information,  as the Committee deems
          desirable.

                                     - 24 -


Internal Accounting and Control Functions

     13.  Review the adequacy of the Company's system of internal accounting and
          financial control.

     14.  Annually  review the  quality of  internal  accounting  and  financial
          control,   the   auditor's   report  or   opinion   thereon   and  any
          recommendations  the auditor may have for  improving  or changing  the
          Company's  internal  controls,  as  well  as  management's  letter  in
          response  thereto and any other matters required to be discussed under
          Statement  of  Auditing  Standards  No. 61 (as it may be  modified  or
          supplemented).

     15.  Review the  Company's  major  financial  risk  exposures and the steps
          management  has taken and proposes to take to monitor and control such
          exposures.

     16.  Recommend to the Board of Directors for appointment  and evaluate,  in
          consultation with executive management, the Company's controller.

     17.  Review  and  approve  the  budgets  and  staffing  for the  Accounting
          Department.

General

     18.  Annually  review this Audit Committee  Charter,  and any provisions of
          the  Company's  by-laws  that  refer to the  Audit  Committee,  and to
          propose to the Board of Directors necessary or appropriate revisions.

     19.  At least annually, the Committee shall hold separate, private meetings
          without  other  members  of  management  present,  with  each  of  the
          Company's  Chief  Financial  Officer,  Controller,  and the  Company's
          independent auditor;  and, each such person shall have free and direct
          access to the Committee and any of its members.

     20.  Prior to the beginning of each fiscal year, the Chairman shall draft a
          proposed  schedule of the Committee's  activities for the coming year,
          and  the  times  at  which  such  activities  shall  occur,  including
          preliminary agendas for each proposed meeting of the Committee,  which
          shall be submitted to the Committee for its review and approval,  with
          such changes as the Committee shall determine to be appropriate.

Reporting Responsibilities

     21.  Periodically   report  its  activities,   concerns,   conclusions  and
          recommendations to the Board of Directors.

                                    AUTHORITY

     22.  The Audit Committee and each of its members may  communicate  directly
          and/or privately with the Company's  directors,  officers,  employees,
          consultants,   agents,   internal  auditors,   independent   auditors,
          attorneys-in-fact,  counsel (including inside and outside counsel) and
          advisors,  and any and all third  parties  in the  performance  of the
          Committee's functions.

                                     - 25 -


     23.  The  Committee may cause an  investigation  to be made into any matter
          within the scope of its  responsibilities  under  this  Charter as the
          Committee deems necessary,  or as otherwise  requested by the Board or
          Directors.  The Committee may require  Company  personnel to assist in
          any such investigation, and may engage independent resources to assist
          in such investigations as it deems necessary.

                              COMMITTEE MEMBERSHIP

     24.  The membership of the Audit Committee shall consist of three directors
          each of whom shall:

          (i)  have been appointed by the Board of Directors.

          (ii) be free of any  relationship to the Company which, in the opinion
               of the Board of  Directors,  may  interfere  with the exercise of
               independence from management and the Company;

          (iii)be or shall become (within a reasonable  period of time after his
               or her appointment to the Committee)  "financially  literate," as
               such  qualification  is  interpreted by the Board of Directors in
               its discretion; and

          (iv) otherwise meet the  requirements  of independence as set forth in
               the rules of the American  Stock  Exchange or any other market on
               or through  which the  Company's  securities  may be traded  (the
               "relevant listing authority"),  as such rules may be amended from
               time to time.  In  addition,  at least  one  member  of the Audit
               Committee shall have accounting or related  financial  management
               expertise,  as  determined  by  the  Board  of  Directors  in its
               discretion.

     25.  The Board of Directors  reserves  all  authority  permitted  under the
          rules  of  the  Commission  and  the  relevant  listing  authority  in
          connection with any matter referred to in this Charter,  including but
          not limited to the  determination  of  independence of Audit Committee
          members.

                                    MEETINGS

     26.  The Audit  Committee  shall meet as often as  necessary to fulfill its
          functions as determined by the Committee, but no less than three times
          annually.

                                     - 26 -



                          MISSION WEST PROPERTIES, INC.
                               ------------------
                            ------------------------
                       SOLICITED BY THE BOARD OF DIRECTORS
                     FOR THE ANNUAL MEETING OF STOCKHOLDERS

     The undersigned  hereby appoints Carl E. Berg and Michael Knapp,  each with
the power to appoint his substitute, and hereby authorizes them to represent and
to vote,  all  shares of common  stock of Mission  West  Properties,  Inc.  (the
"Company")  held of record by the  undersigned  on April 20,  2001 at the Annual
Meeting of Stockholders to be held May 17, 2001 and any adjournments thereof.

     THIS  PROXY  WHEN  PROPERLY  EXECUTED  WILL BE  VOTED  AS  DIRECTED.  IF NO
DIRECTION  IS GIVEN WITH RESPECT TO A  PARTICULAR  PROPOSAL,  THIS PROXY WILL BE
VOTED FOR SUCH PROPOSAL.

     PLEASE MARK,  DATE,  SIGN, AND RETURN THIS PROXY CARD  PROMPTLY,  USING THE
ENCLOSED ENVELOPE. NO POSTAGE REQUIRED IF MAILED IN THE UNITED STATES.

     Dear Stockholder:

          Please  take  note of the  important  information  enclosed  with this
     Proxy. There are a number of issues related to the operation of the Company
     that require your immediate attention.

          Your vote counts,  and you are strongly  encouraged  to exercise  your
     right to vote your shares.

          Please  mark the boxes on the proxy card to  indicate  how your shares
     will be voted.  Then sign the card,  detach it and return your proxy in the
     enclosed postage paid envelope.

          Thank you in advance for your prompt consideration of these matters.

                                                   Sincerely,
                                                   Mission West Properties, Inc.

- --------------------------------------------------------------------------------
                                   DETACH HERE
   [X]  Please mark vote
        as in this example



                                                                                 FOR     AGAINST    ABSTAIN
                                             
1. Election of Directors                         2. Ratify the appointment of    [ ]       [ ]        [ ]
   NOMINEES:  Carl E. Berg, John C. Bolger,         PricewaterhouseCoopers
   William A. Hasler, and Lawrence B. Helzel        as independent LLP auditors.
                               FOR   WITHHELD
                               [ ]     [ ]

                                                 3. In their discretion, the
                                                    proxies are authorized to
                                                    vote upon any other business
                                                    that may properly come
                                                    before the meeting.


- -------------------------------------            MARK HERE FOR  [ ]
             Name                                ADDRESS CHANGE
                                                 AND NOTE AT LEFT
- -------------------------------------
         Street Address
                                                 PLEASE SIGN EXACTLY AS NAME APPEARS HEREON. JOINT OWNERS SHOULD
- -------------------------------------            EACH SIGN. EXECUTORS, ADMINISTRATORS, TRUSTEES, GUARDIANS OR OTHER
City       State   Country   Zip Code            FIDUCIARIES SHOULD GIVE FULL TITLE AS SUCH. IF SIGNING FOR A
                                                 CORPORATION, PLEASE SIGN IN FULL CORPORATE NAME BY A DULY
                                                 AUTHORIZED OFFICER.

[ ] PLEASE CHECK HERE IF YOU PLAN ON ATTENDING THE ANNUAL
STOCKHOLDERS MEETING.


Signature: _______________________ Date: _____________       Signature: _______________________ Date: _____________