Foundation Contractors in Seattle

Work was completed on time, on cost estimate, and very well done. All mess was carefully cleaned up after completion of the job. All in all an excellent experience. I highly recommend TerraFirma.

Seth from TerraFirma came out to my house to inspect my basement, which is starting to show signs of water encroachment. I had no idea what to do. He did a thorough inspection of the interior and exterior of the house, and then we talked. He walked me through several options to address the issue, explaining in a way I could understand, and being very receptive and responsive to my questions. He was very professional and courteous. Seth promptly sent me the quotes for the three options we had for the basement, and made sure to be tidy as he headed out!Even before this, the person who talked with me on the phone to take my info, and later to confirm the visit, was helpful and courteous.It's rare to have a such a positive experience with a contractor (just sayin'), but this was it. I am not sure when we'll be making these changes to my basement, but when we do, it'll be with TerraFirma -- and it'll be with Seth. Everything about this company is green flags!

Seth from TerraFirma did a great job in measuring and providing the estimate for our house. He was very patient in walking us through different scenarios and introducing the tech specs of the proposed solution options. Super helpful for us.

Great company to work with. Honest and up front the whole way through. I appreciate the time Seth took to explain each option to me. I would recommend using then if you have issues under your home...

I should have posted a review years ago when Terra Firm lifted up our sinking home in Olympia (the floor was an inch below the baseboards) and encapsulated...

This is the 3rd time I have worked with this company. Very satisfied every time.Seth was very professional and easy to work with.

System Design Specialist, Kristy Young, was phenomenal to work with! She was thorough and a true professional. Kristy was able to bring plans to her team which resulted in a substantial cost savings versus competitors. Other competitors wanted us to remove main sewer line and displace our new electrical panel when in fact the wall stabilizer was able to fit behind due to it's sleek, thin carbon armor material! Kristy is beyond exceptional and I can't recommend her enough!

Seth has been really awesome. He is professional and very patient. We had many questions. He took time to answer them all and come over twice to make sure the detail were accurate. I'm happy to have met him and look forward to our basement being fixed!

We called TerraFirma with a pretty significant problem. We had just purchased a home and were a bit misled on a couple of items. The basement and crawlspace were mold infested (which we did know). What we did not know was that at times of the year, there would be some standing water in the crawlspace. We also didn't know that the drain from the sump pump was actually underwater (adjacent lake), nor did we know the pool backflushed into that same line and actually would enter the crawlspace whenever that process occured. The crawlspace was unvented and unconditioned....the perfect storm of BAD! Our goal was to first remediate the mold and then resolve the issues that allowed the mold to grow in the first place. Enter Terra Firma. Tulane and Terra Firma stood head and shoulders above every other company I spoke with. It wasn't jus that they were going to fix it- we literally walked through every step and every product-I knew what I was buying before we started. The crew was professional, on time and did exactly what they said they would do and in the time frame promised. With Terra Firma, we waterproofed and encapsulated our crawlspace, we insulated the crawlspace, we installed new sub floor drainage with new sump pumps with battery backup to lower the water table under the house (that now drains above the high water line), we installed new structural floor posts where others had rotted, we installed a bypass for the pool overflow and we installed dehumidification and we are in the process of now conditioning the space. Terra Firma led the way and did an excellent job both on the communication and on the installation (at the price originally quoted!). I would highly recommend this firm for anyone with complex and challenging crawlspace issues. Great work and fantastic team from start to finish!Bruce McKee

Contacted terra firma about floor sagging. Sam came to evaluate and give an estimate. He listened carefully to what I wanted and thoroughly explained what...