Exhibit 23.1

                    CONSENT OF INDEPENDENT ACCOUNTANTS


We consent to the incorporation by reference in this Amendment No. 1 to the 
registration statement on Form S-3 (File No. 333-41203) of our report dated 
April 17, 1998 on our audits of the combined financial statements and 
financial statement schedule of The Berg Properties as of December 31, 1997 
and 1996 and for the years ended December 31, 1997, 1996 and 1995 and our 
reports dated April 17, 1998 on our audits of the Combined Statements of 
Revenue and Certain Expenses of the Kontrabecki Properties for the years 
ended December 31, 1997, 1996 and 1995 and the Combined Statement of Revenue 
and Certain Expenses of the Fremont Properties for the year ended December 
31, 1997 appearing in the registration statement on Form S-4 (File No. 
333-52835) filed May 15, 1998 with the Securities and Exchange Commission 
pursuant to the Securities Act of 1933. Additionally, we consent to the 
incorporation by reference of our report dated March 20, 1998 on our audit of 
the consolidated financial statements of Mission West Properties as of and 
for the year ended November 30, 1997 and one month period ended December 31, 
1997 appearing in the annual report on Form 10-K (File No. 1-8383) filed 
March 31, 1998. We also consent to the references to our firm under the 
caption "Experts".

San Francisco, California
May 19, 1998                              /s/ Coopers & Lybrand L.L.P.
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                                              Coopers & Lybrand L.L.P.