Service Area

Contracted for sidewalk and patio leveling and Crack repair. Schylar being the person in charge. Very professional and provided excellent results with final product.

Bailey was timely and thorough in his assessment, estimate, and reporting on my inquiry about a foundation crack. Although I decided not to have any work done at this time I was pleased with their service.

I purchased two waterproofing systems from them a few years back. After the rain the past couple days its time to leave a glowing review. They did an interior drain in my basement and a separate drain tile system in my crawlspace. Both systems have been working flawlessly for 3 or 4 years now with zero water intrusion into my basement that I totally renovated after their install. They've also come out every year as promised for servicing. Thankful for connecting with them. After hearing the river of water enter into the pump and it go off every minute or so for nearly 12 hours yesterday, they deserve 5 stars. I would recommend them to anyone.

Thanks to Jorge, Juan and Scott for job well done!

Terra Firma is a wonderful company to work with. The scheduling and prompt arrival of the team to my house was exemplary. They were careful and knowledgeable and thorough with all of their work.

Skylar did an outstanding job. Very knowledgeable. Very pleased with the results. Joe Henslee

This is our 2nd time to use Terra Firma and we can't recommend them highly enough. They had lifted our sunken front porch and driveway a few years ago. So when we were having bad odors and mice infestation in our crawl space we didn't hesitate to call Terra Firma. They sent the best design specialist Derek Ryan and the best crew ever to encapsulate it! Such hard-working, professional, respectful young men. Foreman Luis kept us informed and answered all questions. Actually all of them could knowledgeably answer our questions. It took them all week and Brad, Jorge and Jose. They worked their tails off! We couldn't be more pleased.

We hired TerraFirma to fix our foundation. They inspected thoroughly, explained the plan, and completed the repairs professionally. The process was smooth, and we’re thrilled with the results. Highly recommend TerraFirma!

Inspector Elijah was on time when he said he was going to be there was very prompt and personable. I feel like did a very thorough inspection of my crawlspace.

Bailey came out to do an inspection of our foundation to let us know what shape it was in and what kind of work might need to be done. He was thorough and honest about the condition of our foundation so we could make informed decisions about next steps with our property.

James and his crew were efficient, kind, and exceeded my expectations. My foundation was needed piers both outside and in the basement, yet they were quick and cleaned up. I even noticed a change in my home’s interior when it was fixed! Cracks closed up. They took care of the whole process, including permits and inspections. And, James communicated, including walking me through, clearly listening to my responses. I recommend TerraFirma, especially James who was the foreman on my job, especially to those who want to be respected, want to understand what is happening, and want good communication throughout the job.

Had Walt come out to Corvallis to assess our concrete slab foundation and he was very knowledgeable of everything he observed surrounding the home's foundation. He took time to understand our concerns and provided us with his solution to our problem. We ended up having a structural engineer come out to asses our home and get his recommendation on if the work was needed. Although we ended up not needing to have the work done, the structural engineer said that Walt's estimate on the work needed to fix the problem was correct and if our house truly needed it, then he would have recommended the exact same work be done. In the future, if we have any other concrete/foundation projects around the property, we will definitely be calling Walt again.

Walt listened to my concerns and did a thorough job of evaluating the foundation. When he finished, he took the time to explain what was normal settling, and what was concerning. He pointed out that I had a drainage problem around the foundation that needed attention, and might prevent the settling from becoming critical. I loved that he was not just out to sell me a service!!! I feel like I can trust his recommendations when I have him back to see if the new drainage solved the problem. Thanks Walt!!!

My home is situated on a hillside that slopes south to north and east to west. My foundation stem walls along with my concrete floor were sinking and my floor was out of level. Terra Firma came and sunk several tubes down fifty-seven feet to stabalize my stem wall footings and they injected foam in several areas of my concrete floor to make it level again. They did a fantastic job and they were thourough and left my home in the same condition before they began the work. The only complaint I have is that the estimator indicated that many of the cracks in the concrete floor would close up with the foam and they did not.

Great company. They have done several projects over the years. Always good work ethic! Hard work! Cleaned up, put things back, all good

From bid to project completion, this team has been fantastic. Derek took the time during th ebid process to explain what I needed and why I needed it. He treated me like a compentent human and gave me the info necessary to make a good decision. The crew of guys who did the work were fantastic. It's never easy to have people in your home, but Aris, Fernando, and Tyler were hard-working, gracious, and willing to keep me informed about each stage of the process. This was a significant improvement over our former crawlspace techs and we couldn't be happier. Thanks, guys!

Bailey did a fantastic job inspecting my crawl space and designing a solution that fit my needs. I really appreciated his thorough evaluation, detailed explanations, and professionalism. I will keep TerraFirma in mind for future projects.

Extremely professional, and above and beyond in their work.

Crew was very professional. Arrived right on time. Cleaned up daily on job. Raised outer edge of our sunroom after installing 4 piers and new support posts.

Good customer service, good quality work and timely.

Zack, Andrew and Joey showed up every day by 8:30, worked their butts off & always left a clean work site... totally 5 stars for these guys. There was a 4th workerbee, but I never got his name & he was great too!

I just want to share that they showed up on time, did the work they promised to do and they applied unforeseen discounts to the final bill that were unexpected. Shaving thousands off my bill at the very end. In a word “Trustworthy”.

After I bought a 115 year old house built partially into a hill near the top of Council Crest in Portland and discovered that the walls bled water when it rained, two walls were built into a hill and had endured the pressure of water and mud for a century, causing cracks and turning the foundation to crumbles, I called Terra Firma when an neighbor with an old house told me about her experience. Terra Firma has a great reputation. During the first meeting, Hannah walked the property and made a detailed proposal, explaining how Terra Firma would ensure that the walls do not cave in by shoring them up and anchoring them, supplemented with a vapor lock system to keep the water out of the house. NO MORE MUSTY SMELL, THANK YOU! Hannah explained the plan thoroughly, using her iPad to ensure that I understood. It could not get any better than this...I signed the paperwork immediately and contracted for the foundation repair and upgrade. This week, Geovany and his team spent four days working very hard and very smart to finish the project on time, and without any hitches. And they were working hard, very thoughgoing and steadfast. I am extraordinarily pleased with the work of the TerraFirma team, and how they did it. It is obvious by looking at the work that my basement walls are solid, secure, and dry. THANK YOU TerraFirma!

Just had our annual inspection/maintenance check on our sump system, and the tech Steve-o did a great job. Unlike the tech the previous year, who barely even glanced at the system before charging $180 bucks for the service, Steve-o inspected every part of the system, removing and doing a full inspection/cleaning of each pump. He gave us thorough explanations of what he was doing and any issues he found, and gave us several options for continued maintenance going forward. Huge improvement over the previous year. Update (12/17/2025): During this morning's crazy wind storm we lost power at 2am, and unfortunately our battery backup sump pump was at the end of its life and the motor died. We scrambled to get our generator running in time to avoid disaster, but in the meantime we were without a battery backup with more storms on the way this week and holiday travel where we were planning to be away. I left an urgent message at probably 3am for TerraFirma, and got a call back from Lucinda at maybe 7:30. She managed to find a tech to come out this afternoon, who apparently came up from Roseburg to help with today's issues. The tech Jason was able to get a new backup, a new battery, and new controller box. Huge peace of mind for the coming weeks. No one loves an unexpected bill before the holidays, but I'm grateful to Lucinda for making it happen and Jason for getting the work done quickly for us. TerraFirma continues to do us solid. Thanks!

Tyler came out and did a great job of thoroughly going through the house and taking measurements and pictures to document what need attention. He walked me through options and gave his recommendations. While I had other bids, he kept in contact and checked in to see if I needed anything else. He did a great job working with my unique situation, never pressuring me to go in any other direction then what I comfortable with. Then Victoria was great is getting everything set-up and connecting me to the crew that would be out to work on the project. They were there promptly the day as scheduled, which I appreciated. They did a great job of walking me through the process and explaining everything that needed to be done while I was working. They were fast and communicated clearly throughout the process and made sure I was there when they finished up. They cleaned up better then I expected considering they had to dig up a lot of soil and replaced the fence without it even looking like it was moved. I was able to get back the 1/2 an inch or so back from the chimney moving away from the house, so I was very happy about that! I would highly recommend them again and if I need the house foundatio repaired, would definitely call them back. Time will tell if everything stays where it is, but so far it's been a wonderful experience. They were competitively priced but seemed like they wanted my business more then the others and made me feel valued.

Very thorough and informative.

The Terra Firma team of Luis Juarez, Jose V., and Jorge D. were very dedicated and thorough in the crawl space encapsulation project at our home. They worked long hours to get the project done well and on time- as promised.

Brian came out and gave such an honest report. He was stellar to work with, and if we have any further problems,Terra Firma has my business.

Skylar was wonderful to work with. Was very professional and did a great job with raising our concrete pad.,

The foreman was very detailed oriented, gave good consideration to the job, and was very easy to work with. The work done was excellent and the crew left the work site in better condition than what they started with.

The crew that did the work were great and did a GREAT JOB.

I had a sump pump installed and these guys were fantastic from start of project to finish. Mychelle answered all my questions, Andrew and team were punctual, professional and got the job done fast, plus no mess. Thanks guys.

Sam was amazing. He provided 4 different options and let me know the price ranges to work with my budget.

No clue if the job ws done technically perfect or not. Hopefully, I will never know (no earthquacks). they kept me well informed, were prompt, polite and left no mess.

Very impressed with the person who came and did a thorough inspection. He provided multiple options and estimates. I had a few jacks placed under the house after noticing structural changes in my home. The team that came to do the repairs worked so well together, didn’t make a mess and were very professional. I was happy with everyone I worked with.

Bailey came out and did a thorough walk through, listened to my project plans, was very helpful and polite!

Terra Firma has done a very nice job! The work was professionally completed. They were thorough and communicative. They walked me through all the details as they went and cleaned up well when they were completed. Very nice work!

Seth has made this process so streamlined and time efficient. I was concerned about my foundation issue, however he was able to assess the issue and present a viable solution with ease. He explained what had occurred and how to fix/ prevent such issues in the future in a way that left me informed and empowered to make informed decisions about going forward. He and his team has been prompt with communications and even sent photo updates of the work being complete, as I was out of town at the time. I really appreciated Seth going out of his way to make this the best experience possible, taking pride in his work and putting in the extra effort.

They scheduled for a week but were done in 3 & half days. Worked around my gigantic existing sump pump cleaned out debris from the plumbers and sealed off my crawls space. Travis & is team were fantastic! Highly recommend the company & Travis's team to everyone.

Noah was extremely thorough and explained his findings clearly with optional choices of services that we needed with the pricing. He was friendly, courteous and easy to talk to. We would highly recommend Terra Firma. Noah is a very valuable representative of the company.