W | A Associates performs architectural and structural evaluations, including recommendations for seismic repair and improvements to adobe, concrete and un-reinforced masonry structures which maximize the preservation of historic features of the structures.

In addition, analysis and research services are provided to investigate source materials and identify causes of deterioration on various historic structures.

Our extensive experience in forensic architecture and engineering is particularly beneficial in the historical restoration area of work.




Allensworth State Park

Earlimart, CA

Hearst Castle

San Simeon, CA

La Purisima State Park

Lompoc, CA

Hellman-Ehrman Mansion Sugar Pine Point State Park

Lake Tahoe, CA


Coit Tower


The Carquinez Hotel

National Register of Historic Places

Richmond, CA

Antelope Valley Indian Museum

Lancaster, CA

Clock Tower Building

Benicia, CA

Coit Tower

San Francisco, CA



Bright Angel Lodge

Grand Canyon, AZ

Trinity Episcopal Church

San Francisco, CA

Umatilla Field Office

Hermiston, OR

Heinold’s Historic

First & Last Chance Bar

Oakland, CA



Delaware Street

Historic District

Berkeley, CA


Historic Building

Santa Rosa, CA


Grand Canyon, AZ

The Sollano Residence

San Miguel de Allende



Old Mill

Mill Valley, CA