Portland’s Authority in Seismic Retrofitting & Seismic Rehabilitation Since 1999

Earthquake Retrofitting, Gas Valve Shut-off Installation
and Foundation Repair for Portland, OR

Since the mid 1980’s geological research has shown that Oregon & Washington have probably been shaken by numerous subduction zone earthquakes during the last several thousand years. The Cascadia Subduction Zone, which runs north/south along the West Coast, is a huge area where tensions between the oceanic Juan de Fuca and North America plates build. Research indicates that earthquakes occur every 300-500 years, and the most recent was about January 26th, 1700.

Planning is the key to surviving any disaster situation. Part of your disaster planning should be the consideration to seismically retrofit your home. When an earthquake moves a house from side to side and up and down, the house can move off of its foundation. If your home comes off of its foundation, the home will most likely be completely totaled. A modest investment for a seismic retrofit is a step toward:

Increased safety for the occupants of your home

Reduced structural damage

Increased likelihood of habitability

Increased value for home resale

Our Top Downloads





As Portland’s Seismic Retrofit Authority, we have solutions to all foundation issues including the following common foundation problems:

The foundation has too much lime

 The foundation has too much sand

 The foundation is soft

 The foundation has rock pockets

When done correctly a seismic retrofit can greatly increase the chances of your home surviving an earthquake.


Your home should be bolted with Portland’s Seismic Retrofit & Seismic Rehabilitation Authority. For a professional evaluation of your homes earthquake readiness and retrofit estimate please contact us.

KenCookHome