About Us

Professional Earthquake Retrofitting Contractor

Sound Seismic, established in 1999, is a certified earthquake retrofitting specialist, dedicated to using proven materials and construction practices to help protect our clients' homes from earthquake damage.

We pride ourselves in having the best trained and most experienced retrofit crew in the greater Seattle area. All of our staff are trained through the WA Assoc. of Building Officials (WABO) Earthquake Home Retrofit Training program.

We provide a professional "no obligation" assessment, and a fixed price quote.  Retrofitting is ALL WE DO!  Over twenty years of specialized experience have made us the best (and the best value) in retrofitting.  When we are done, you will be provided with the signed-off building permit, as well as a certificate of completion letter so you will qualify for earthquake insurance coverage.

Our service area covers older homes in the cities of Seattle, Shoreline, Kirkland, Bellevue, and nearby areas.  We serve all Seattle neighborhoods, including Ballard, Magnolia, Queen Anne, Phinney Ridge, Wallingford, Greenwood, Wedgwood, Ravenna, Green Lake, Laurelhurst, Capitol Hill, Madrona, Beacon Hill, West Seattle, Mount Baker, Loyal Heights, Crown Hill, Broadview, and more.

We are happy to provide references, and we encourage clients to "do their homework" on us or any potential contractor.  The State of Washington posts up-to-the-minute information regarding a contractor's license status.   Washington Department of Labor and Industries

Experience and Knowledge Base

Not only are Sound Seismic's retrofit technicians trained on the technical level at the University of Washington they are also refined through field experience and continued education. In such an industry, on-the-job experience coupled with up-to-date product and procedure education is key to creating a quality earthquake retrofit.

The basics of retrofitting may seem pretty simple: bolt the house to the foundation and then apply shear panel to secure the pony walls of the house. As one might imagine "not all houses are created alike". Earthquake retrofit FAQ's

Securing the house to the foundation is a main component of earthquake retrofit. In the picture to the right one of our retrofit technicians is using his refined skills and experience to help secure the house safety in the event of an earthquake.

Get a Professional Evaluation Now

We’ll assess your home and put together an
engineering-driven plan to keep your family safe.

Call 206-352-5644 SCHEDULE ONLINE

Retrofitting Works

Our highly-trained and experienced earthquake retrofit team is certified to help you protect your home against major structural damage from earthquakes.  We do not call our work "earthquake proofing", as there are simply no guarantees, but the methods and materials we use have been proven to be effective at minimizing earthquake damage.

Specific engineering requires specific retrofit carpentry. A saw, saw horses and lumber are always on the Retro Truck for just such needs. Pressure treated lumber with a sealant to protect it from moisture or insects.


The Retro Truck is fully stocked and ready to tackle any task when it rolls up on the job site.

All tools travel with the Retro Truck and many are powered by an on-board compressor.

Ready to retrofit?

Let’s make your home safer

Get a professional evaluation

Call 206-352-5644


Sound Seismic
7543 15th Avenue NW
Seattle, WA 98117

Contractor's license # SOUNDSL836ND

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