Thayer Architecture

Thayer Architecture Inc. is an award-winning architectural firm located in Marin County, CA, committed to serving the needs of homeowners and developers for over twenty years. Specializing in the design of new custom homes, developer-built homes and commercial buildings, we also have extensive experience with remodeling projects and additions to existing buildings. A family business with a long-standing presence in Marin, the firm was founded by John S. Thayer, Architect in 1973 with offices in Mill Valley.