About TerraFirma

We cover all of Oregon and Southwest Washington.

Fix it once. Fix it with confidence. Fix it with TerraFirma

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Founded in 2005, TerraFirma has been a partner in keeping your home safe and sound structurally for over a decade. The foundation experts have gained a reputation of providing all customers with the best quality of service. Each employee is extensively trained and certified in foundation repair and basement waterproofing, so you can rest assured knowing you are in good hands.

At TerraFirma, we understand that foundation cracks, wet crawlspaces, and musty basements are stressful. We offer a free onsite estimate for all work that you may need to be completed, and we will work with you to customize a solution for your home.

TerraFirma stands by our promise of solving your foundation problem and basement needs in the most efficient manner.

TerraFirma Reviews and Ratings

Check out reviews and comments from our past customers.

Lake Oswego, OR 97034
Lake Oswego, OR 97035
Lake Oswego, OR 97035
Lake Oswgo, OR 97035
I was very pleased with all aspects of the work...I would highly recommend your firm to anyone who asked about it!
Silverton, OR 97381
Tualatin, OR 97062
Tualatin, OR 97062
Wilsonville, OR 97070

I will never go with anyone else but Terra Firma. My crawl space looks great and my house and family are healthy.

Beaverton, OR 97006

We were very impressed with the professionalism and courtesy. And, the Thank Yous, at least two. Awesome experience.

Beaverton, OR 97007
Portland, OR 97075

Extremely happy with both crews that came to my home. Respect for my home and property was a priority with them, and the work so far is very satisfactory. I feel I can call them anytime if a question arises. Thank you so much!

Warren, OR 97053

I'm glad I had my CLEANSPACE installed BEFORE I had any problems with mold or rot.

Saint Helens, OR 97051

You can be proud of the this team!

Deer Island, OR 97054

I called many contractors to find some one to level our house a year or so ago but no one would bid on the job. They were afraid of the liability. Some contractor wanted soil engineering work done with no estimate of the cost of that work, and no assurance that the house could be leveled. I found this unacceptable, so after calling dozens of contractors I didn't like the idea but decided to just live with the problem. There was a difference in the floor height of nine inches and there was no step.

A year or more later Patrick Dunn from TerraFirma called and said he had learned about our house problem from one of the contractors we had contracted and TerraFirma had a solution.

TerraFirma did the job. I am extremely pleased with the work done. The workers went beyond what I expected in every way. They were friendly and polite. Answered all my many questions and work quality was superb as was cleanup each day and at job completion. There was absolutely no problems with the work done. I highly recommend TerraFirma.

Longview, WA

things went as planned. a couple things were overlooked, no big deal. missed access opening under back room. I pulled wood and sawed a access hole. Also, missed removing some steel piping, again no big deal. I will cut the pipe and remove, probably in the next 5 or 10 years. good job

Longview, WA 98632

Thank You!

Hillsboro, OR 97124

Drew, our installation crew chief, did an outstanding job!

Hillsboro, OR 97123
I chose Terrafirma because of the expertise shown by the salesman, followed up by a great crew on site.
Hillsboro, OR 97123

Our home is on a slope in the woods, and over time we noted significant signs of settlement - cracks in drywall and ceiling, the deck sinking, settlement of walkways and front step, cracks in foundation. Josh from TerraFirma came out and did a very thorough (at no cost to us) evaluation of the property, identifying the issues relating to the soil and location, and probably how the site was prepped originally, as well as problems related to water drainage down our driveway and dumping into the soil next to the foundation. He recommended placing push-piers to support and lift the foundation along 3 sides of the house, and adjustable jacks in certain areas of the crawlspace to lift some of the floors that were sagging. He also recommended having trench drains placed across the driveway in two places to eliminate the water draining down to the house (to be performed by different contractor). The sunken slabs/steps/sidewalks would be addressed by "Polylevel" injection under the slabs (subcontractor to TerraFirma). We also decided to have our crawlspace encapsulated at the same time. This was actually our idea to ask about that. Josh was very professional and answered all questions, and at no time did he come across as high pressure or with a sales pitch. He simply presented us with possible solutions to the problems.

In early November, the work began, taking about 2 weeks. Drew, the installation foreman, and his crew were great. Very cheerful, professional and courteous, and hardworking, despite having to work in absolutely miserable conditions of cold and rain. Drew was always available to answer my questions and address any concerns, and went the extra mile to do little things to tie up loose ends in the project rather than leaving things for us to have to deal with afterward.

There was a problem early on when cracks developed in the foundation where at least half the piers were placed, owing to there not having been any rebar reinforcement of the foundation (rebar not required code until after about '98) when it had been poured. Drew indicated that this was not uncommon and that the piers would still do the job. However, many of the cracks were along one edge of the brackets or next to them, where shear along the cracks might be expected during lifting or support. There was also one pier that was very tilted/angled where it contacted the foundation, that mechanically appeared unsound in that position. I called for a time-out and contacted the engineer, Rob, and he and the production manager Keith came out to assess the situation. This resulted in Rob revising the plans to include some additional piers and bolting steel plates on either side of a number of the cracks that were in question, to mitigate the problem, before the foundation was lifted. So they were very responsive to the concerns I raised, and did what was necessary to address the issues. And I should also point out that we were NOT charged anything extra for the additional work performed - only the amount agreed upon in the original contract. There is a small part of me that wonders to what degree the cracks, etc would have been addressed had I not brought up the issue, but I'd like to give TerraFirma and the engineering company the benefit of the doubt and assume that the outcome would be the same (i.e., that the cracks would have been plated, etc). I was slightly disappointed that the cracks in the drywall and ceiling didn't seem to improve much or at all after the foundation was leveled, and I still have some minor concerns about support along one corner, but overall we're very pleased with the job. Drew grouted all the cracks, and repaired all the storm drain pipes, even including a pipe for the irrigation system that I had assumed I would have to fix myself. Another feature to point out that helped make our decision to forge ahead with the project was the 75 year transferable warranty, and the fact that anytime within the first 5 years, you can have TerraFirma come back out to reassess the leveling at no charge.

Another bright point was the Polylevel job performed by Geoff - he and his asst were very accommodating in scheduling, and did a great job of lifting and leveling the sidewalks, slabs and step.

TerraFirma really does seem to be perfectly suited to doing this sort of work on residential homes with difficult/limited access to the foundation, and we certainly would recommend them to anyone with foundation issues. Next summer, we plan on replacing our old deck, which continues and will continue to sink for all the same reasons that the foundation had been sinking. But this time we will support the deck with helical piers, and we are planning to have TerraFirma place the piers.

Hillsboro, OR 97123
TerraFirma Average: 4.8 out of 5
Total Reviews: 173

our service area

We serve the following areas

  • Adams
  • Adrian
  • Arock
  • Athena
  • Baker City
  • Bates
  • Boardman
  • Bridgeport
  • Brogan
  • Burns
  • Canyon City
  • Cove
  • Crane
  • Dayville
  • Diamond
  • Drewsey
  • Durkee
  • Echo
  • Elgin
  • Enterprise
  • Fields
  • Frenchglen
  • Haines
  • Halfway
  • Harper
  • Helix
  • Heppner
  • Hereford
  • Hermiston
  • Hines
  • Huntington
  • Imbler
  • Imnaha
  • Ione
  • Ironside
  • Irrigon
  • Jamieson
  • John Day
  • Jordan Valley
  • Joseph
  • Juntura
  • Kimberly
  • La Grande
  • Lexington
  • Long Creek
  • Lostine
  • Meacham
  • Milton Freewater
  • Monument
  • Mount Vernon
  • North Powder
  • Nyssa
  • Ontario
  • Oxbow
  • Paulina
  • Pendleton
  • Pilot Rock
  • Prairie City
  • Princeton
  • Richland
  • Riley
  • Riverside
  • Seneca
  • Spray
  • Stanfield
  • Summerville
  • Sumpter
  • Ukiah
  • Umatilla
  • Union
  • Unity
  • Vale
  • Wallowa
  • Westfall
  • Weston
Our Locations:

TerraFirma Foundation Systems
761 NE Garden Valley Blvd.
Roseburg, OR 97470

TerraFirma Foundation Systems
10111 S Tacoma Way Suite D5
Tacoma, WA 98499

TerraFirma Foundation Systems
13110 SW Wall St
Portland, OR 97223