Geoffrey Holton has practiced and taught architecture in the San Francisco Bay Area since the late 1980s. He formed his own firm, GHA (www.ghadesign.net), in Oakland in 1996. Geoff’s long-held convictions about green design have recently borne fruit. Besides winning local awards for green architecture projects, his firm has placed highly in international sustainable-design competitions. When not working on his own never-quite-finished house, Geoff enjoys biking in the city and hiking as far away from the city as he and his family can get.