Get matched with top earthquake retrofitting specialists in Troutdale, OR

Before any work could be done, the entire duct system had to be removed. TerraFirma worked seamlessly with my HVAC contractor. There were no issues with the duct system installation after the retrofit and encapsulation.

Excellent to work with! They arrived on schedule and completed the work on schedule and on budget, even though they had to adjust their work to compensate for the lack of room in the crawl space. They are not cheap, but they did the job very well.

TerraFirma did a fantastic job, working hard all 5 days on the job. One of their carpentry specialists was needed to complete most of the job, and he certainly went above and beyond, in my opinion. He and his teammate really cared about securing our home. The one hangup I had was the...

From the "system design specialist" who evaluated the problem through the completion of the work, everything went very smoothly. As is often the case with older houses (1923) there were surprises, but the experienced Terra Firma crew was able to adapt and complete the system on time and on...

Crew arrived on time. Very professional; explained what they were doing. Had to revise the project due to crawl space issues, which required them to cut notches out of the bottom lap of our siding to install their plates. They sent a carpenter the next day to glue the notches back in place.

Very well! The team at my home was responsive, professional and they listened to us when we had concerns.

Really well. Jim takes time up front to be sure he knows my needs. Scheduled work and kept to the schedule. Professional and cleanen up the site each day. We needed to change up a work approach when the original plan would not be effective. Jim adapted and the change actually saved some money.

NW Seismic made a very easy process for estimating and installation. Their drywall and plaster work was particularly well done. They also made some excellent recommendations regarding natural gas shut-offs and securing our water tank. Very professional from beginning to end. Would hire again...

Excellent. Can't recommend NW Seismic enough! They were timely, clean, and kept me in the loop of what they were doing. The permitting process was seamless and they provided a set of pictures for my records. Great company from top to bottom.

I like working with people who are frank. "This is going to be really loud." And it was! But now we feel more comfortable that we had a top-notch company retrofit the house. They were very professional and when they left, the basement was cleaner than when they came.