EXHIBIT 23.1 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation by reference in this registration statement of our reports dated as follows: - - AMB Property Corporation and subsidiaries January 18, 2000 - - WOCAC Portfolio November 3, 1999 - - Columbia Business Center June 11, 1999 - - Manekin Portfolio June 11, 1999 - - Technology Park II Portfolio June 11, 1999 - - Miami Airport Business Center June 8, 1999 - - Junction Industrial Park May 17, 1999 - - Mawah Portfolio July 31, 1998 - - National Distribution Portfolio July 31, 1998 - - Willow Lake Portfolio July 21, 1998 - - Amberjack Portfolio July 9, 1998 - - Willow Park Portfolio June 8, 1998 - - Twin Cities Office/Showroom Portfolio (Minnetonka Industrial Portfolio) May 1, 1998 - - Dallas Warehouse Portfolio (Garland Industrial Portfolio) April 21, 1998 - - AMB Contributed Properties March 27, 1998 - - Boston Industrial Portfolio March 27, 1998 - - The Jamesburg Property March 27, 1998 - - Orlando Central Park March 27, 1998 - - Totem Lake Malls March 27, 1998 - - Crysen Corridor Warehouse February 24, 1998 - - Cabot Business Park October 29, 1997 - - Cabot Industrial Portfolio October 29, 1997 - - Manhattan Village Shopping Center October 17, 1997 - - Silicon Valley R&D Portfolio October 17, 1997 - - Weslayan Plaza October 17, 1997
and to all references to our Firm included in this registration statement. /s/ Arthur Andersen LLP San Francisco, California May 10, 2000