Biopharmaceutical research company Xoma Corp. has taken another 8,000 square feet of space in Berkeley, California, bringing its total space to 100,500 square feet, bizjournals.com reports. Terms were not disclosed. The lease commenced March 1st at Wareham Development''s 820 Heinz Ave. property near Aquatic Park in southwest Berkeley. The property was converted from a former spice warehouse for Durkee Famous Foods. Class A office space was going for $2.54 per square foot in the Berkeley submarket in the fourth quarter 2006, according to NAI BT Commercial market research. Xoma also occupies 890 Heinz, which was a paper-recycling center Wareham remodeled and expanded into a laboratory/office. Wareham Development represented itself in the lease expansion. Xoma is a biopharmaceutical company working on therapeutic antibody discovery and development.