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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.

La Purisima State Park

Hearst Castle

Allensworth State Park

Representative Projects

Hellman-Ehrman Mansion

The Carquinez Hotel

Antelope Valley Indian Museum

Clock Tower Building

Benecia, CA

Coit Tower

Bright Angel


Trinity Episcopal Church

Umatilla Field Office

Heinold's Historic

First and Last Chance Bar

Old Mill

Mill Valley, CA 

Delaware Street Historic District 

Watch Tower

Grand Canyon, AZ

Stonehouse Historic

Building, Santa Rosa, CA

Sollano Residence

San Miguel de Allende

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