<ARTICLE>                     5
<LEGEND>
The  schedule  contains  summary  financial   information   extracted  from  the
Consolidated  Balance  Sheet  as of  December  31,  2000,  and the  Consolidated
Statement  of  Operations  for the year ended  December 31, 2000 of Mission West
Properties,  Inc.,  and is  qualified  in its  entirety  by  reference  to  such
financial statements

<CIK>                                          0001067419
<NAME>                                         Mission West Properties, Inc.
<MULTIPLIER>                                   1,000

                             
<PERIOD-TYPE>                                  12-MOS
<FISCAL-YEAR-END>                              DEC-31-2000
<PERIOD-START>                                 JAN-01-2000
<PERIOD-END>                                   DEC-31-2000
<CASH>                                         4,691
<SECURITIES>                                   0
<RECEIVABLES>                                  0
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                               0
<PP&E>                                         841,478
<DEPRECIATION>                                 (34,022)
<TOTAL-ASSETS>                                 826,910
<CURRENT-LIABILITIES>                          0
<BONDS>                                        0
<PREFERRED-MANDATORY>                          0
<PREFERRED>                                    0
<COMMON>                                       17
<OTHER-SE>                                     102,056
<TOTAL-LIABILITY-AND-EQUITY>                   826,910
<SALES>                                        0
<TOTAL-REVENUES>                               115,944
<CGS>                                          0
<TOTAL-COSTS>                                  15,025
<OTHER-EXPENSES>                               16,521
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             12,765
<INCOME-PRETAX>                                12,579
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                            12,579
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   12,579
<EPS-BASIC>                                    .73
<EPS-DILUTED>                                  .72