Signature Bioscience is seeking between 70,000-sf and 80,000-sf in San Francisco for its headquarters, currently housed in 27,000-sf in Hayward and 28,000-sf in Richmond. The Richmond facility may be retained in the relocation. Draws for a San Francisco headquarters include the new UC San Francisco Mission Bay campus and its planned life science campus. Catellus Development Corp., developer of the life science facility, has estimated completion of the 155,000-sf building in 2002, not timely for Signature's move. The drug discovery firm is instead focusing on space vacated by the dot-com industry.