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Foundation Contractors in Seattle

Leaking in basements and crawl spaces in Seattle and Renton, WA

One of the primary concerns associated with rain in Seattle and Renton is water leaking into homes. Rainwater can seep through roofs, windows, and foundations, leading to leaks, moisture damage, and mold growth if not properly addressed. Homes with older or poorly maintained drainage systems may be particularly susceptible to leaks during heavy rainfall.

Foundation contractors in Seattle are ready to assist you. Here are the top services we provide to keep your home structurally sound.

TerraFirma protects homes from damp, wet basements and foundations around Seattle
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TerraFirma
Seattle Office

10111 S Tacoma Way d4,
Tacoma, WA 98499

Hours: Monday – Friday, 8am-5pm

Choose TerraFirma for Foundation Repairs Near Me in Seattle

If you want your home to stand strong against Seattle’s relentless rain, TerraFirma is the way to go. Our team understands the unique challenges of the area, uses effective methods, and utilizes only high-quality materials for each job. Reach out to our foundation contractors in Seattle to keep your home safe and dry.

Basement Crack Repair in Seattle & Bellevue

Cracks in basement floors are more common than you might expect in Seattle! The size and location of cracks can tell us a little more about what’s going on under your home.

Hairline Cracks in Basement are usually not a sign of structural weakness.

Cracks in Basement Leaking Water can be solved by our sump pump and drainage system solutions.

Heaving Crack in Basement suggests that the soil beneath the basement floor is expanding. When the soil becomes wet, it creates enough pressure to lift and crack a concrete slab floor.

When to Worry about Cracks in Basement – Cracks wider than 1/8″ should be sealed. Check out these 6 common basement crack problems.

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Foundation Repair Contractors Near Me in Seattle

EverBrace & PowerBrace Wall Stabilization Systems reinforce and strengthen your Seattle home against further shifting and settlement

Helical Piles or Helical Piers are the top choice for stailizing Seattle homes with foundations shifting on wet, unstable soil conditions.

Whereas Push Pier Systems push supports all the way to the bedrock under your Seattle home.

Check out all our foundation piering systems here.



Foundation Repair Contractors Near Me in Seattle

EverBrace & PowerBrace Wall Stabilization Systems reinforce and strengthen your Seattle home against further shifting and settlement

Helical Piles or Helical Piers are the top choice for stailizing Seattle homes with foundations shifting on wet, unstable soil conditions.

Whereas Push Pier Systems push supports all the way to the bedrock under your Seattle home.

foundationrepair everbrace Seattle
TerraFirma is not just your Residential Foundation Repair Expert…

We’re Seattle’s Top Commercial Foundation Contractor

for Commercial, Retail, Warehouses, Schools, Government Offices, and More
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helical piles
Stabilize sinking, settling commercial structures with Supportworks helical piers.
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Micropiles & push piers
Expert micropile installation solutions for stability in tight-access and hard soil situations.
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Commercial concrete
lifting & leveling
TerraFirma concrete leveling utilizes high-strength polymers to fill voids under concrete.

Award Winning
Results Begin Here.

bbb Terrafirma Award 2 Seattle
HA elite Terrafirma Awar Banner 2 Seattle

Award Winning
Results Begin Here.

bbb Terrafirma Award 2 Seattle
HA elite Terrafirma Awar Banner 2 Seattle

SEATTLE Homeowners Frequently Asked Questions

What types of cracks in my foundation or basement should I be concerned with?

What’s the cost of foundation repair in Seattle and Bellevue?

How to fix a leaking basement floor?

How to repair a sagging crawl space in Seattle and Bellevue?

How to stop water from leaking through my basement windows?

What type of pier to use for foundation repair in Seattle?

Are you noticing damp drywall and carpet in your basement?

How to repair damaged concrete in Seattle?

What’s the best way to repair concrete?

How to fix moisture issues in your crawl space?

How to protect my basement from leaking and flooding in Seattle?

What are the soil conditions in Seattle and Bellevue?

SCHEDULE A FREE
INSPECTION
IN Seattle

We offer free inspections to homeowners throughout King County. Contact us today and make sure your home is in top shape!

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SEE WHAT YOUR NEIGHBORS
HAVE TO SAY ABOUT US!

At TerraFirma we take pride in our work! We are trusted and referred by homeowners since 2005, to provide solutions for home foundations, basement and crawl space moisture, concrete leveling, and earthquake retrofitting.

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HA elite Terrafirma Awar Banner 2 Seattle
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facebook logo Seattle
tf n logo Seattle
bbb Terrafirma Award 2 Seattle
HA elite Terrafirma Awar Banner 2 Seattle
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Seattle
Homeowner
REVIEWS

Don’t take our word for it – see what our clients have to say.
Throughout the greater Seattle area, including Renton, Bellevue, Kirkland, Auburn, and beyond, our work speaks for itself

Guys came as scheduled , and did a great job ! Provided us with pictures all looks good ! Thank you
Our house is over 100 years old and the basement was very humid. I had laid down a vapor barrier but it wasn't sealing out all the moisture from the walk-in crawlspace. So we decided to have our walk-in crawl space encapsulated by Terra Firma after getting quotes from 3 companies. I knew that we needed a pro to get all the weird angles done correctly. We chose TF because they were professional, communicative, and their quote was reasonable in comparison to the others. They got the job done and have stayed in contact afterwards to make sure everything was correct. As a homeowner, I appreciated how they listened to my issues and expectations while also giving me needed expertise about how to get the job done. After the encapsulation was finished, the difference was clear. Our home smells better and the air is nice and dry.
Seth. Was great. Very. Professiinal. Thank you Terrafirma Vince
Outstanding professionalism, quality, reliability
Seth came out and did a very thorough evaluation. Recommended how to proceed going forward and was extremely professional. Really looking forward to working with them.
Five stars on all categories.
TerraFirma responded quickly to our call. Came out for a free evaluation of our foundation . Seth was very friendly, professional, and obviously well knowledgeable about his trade. Within 2 hours we had a very thorough assessment of our foundation. Thank you TerraFirma, and Seth.
I reached out to TerraFirma Foundation Systems to have them come look at my foundation. They were able to get me on the schedule within the week. Seth showed up on time for the appointment and got right to business. He walked me through what he was going to do and what he was looking for. He was very professional and polite. He even took his shoes off outside everytime he had to come in the house. Which is a big deal to me. When he finished the inspection we sat down and went over all my options. The whole experience was easy and I didn't feel taken. I would highly recommend Seth and TerraFirma.
Fast work, was able to get us scheduled fairly quickly before any more damage could happen to the foundation (was sort of sinking or settling). The clean up of the dust could have been better, and I spoke with them about it. I am very happy that my kitchen cupboards are now back up to the ceiling, the 1/4" gap is gone. It took months for things to settle in, but am very glad I went with Terrafirma.
Seth was amazing! He was timely, thorough, and detailed. Highly recommend if you're in need of foundation bids and work.
Great Team, solid work! Big thanks to Jacob I, Michael T, Ken L + the crew Jorge J, Robert C, Miguel P and Taylor D. Highly recommend uses TerraFirma for you foundation needs.
Seattle
Lenee P.recommends
Friendly and got the job done fast and great results! Would greatly recommend them!

TERRAFIRMA IN SEATTLE

With over 20 years of experience fixing foundations, basements, and crawlspaces, we know Seattle.
Maybe a little too well. Read on to find helpful homeowner tips, case studies, and before & after galleries
from our worlk in Bellevue, Redmond, Renton, and beyond.

Need Top Rated
Foundation Experts
in Washington?

Our clients don’t just recommend us—they rave! From Tacoma to Seattle, Olympia to Puyallup, and all across Washington state, our trusted experts consistently provide top-rated, reliable foundation solutions. See for yourself why we’re the preferred choice.

Seattle
Lenee P.recommends
Friendly and got the job done fast and great results! Would greatly recommend them!
Seth was amazing! He was timely, thorough, and detailed. Highly recommend if you're in need of foundation bids and work.
Great Team, solid work! Big thanks to Jacob I, Michael T, Ken L + the crew Jorge J, Robert C, Miguel P and Taylor D. Highly recommend uses TerraFirma for you foundation needs.
Our house is over 100 years old and the basement was very humid. I had laid down a vapor barrier but it wasn't sealing out all the moisture from the walk-in crawlspace. So we decided to have our walk-in crawl space encapsulated by Terra Firma after getting quotes from 3 companies. I knew that we needed a pro to get all the weird angles done correctly. We chose TF because they were professional, communicative, and their quote was reasonable in comparison to the others. They got the job done and have stayed in contact afterwards to make sure everything was correct. As a homeowner, I appreciated how they listened to my issues and expectations while also giving me needed expertise about how to get the job done. After the encapsulation was finished, the difference was clear. Our home smells better and the air is nice and dry.
Fast work, was able to get us scheduled fairly quickly before any more damage could happen to the foundation (was sort of sinking or settling). The clean up of the dust could have been better, and I spoke with them about it. I am very happy that my kitchen cupboards are now back up to the ceiling, the 1/4" gap is gone. It took months for things to settle in, but am very glad I went with Terrafirma.
Seth came out and did a very thorough evaluation. Recommended how to proceed going forward and was extremely professional. Really looking forward to working with them.
Five stars on all categories.
Outstanding professionalism, quality, reliability
TerraFirma responded quickly to our call. Came out for a free evaluation of our foundation . Seth was very friendly, professional, and obviously well knowledgeable about his trade. Within 2 hours we had a very thorough assessment of our foundation. Thank you TerraFirma, and Seth.
I reached out to TerraFirma Foundation Systems to have them come look at my foundation. They were able to get me on the schedule within the week. Seth showed up on time for the appointment and got right to business. He walked me through what he was going to do and what he was looking for. He was very professional and polite. He even took his shoes off outside everytime he had to come in the house. Which is a big deal to me. When he finished the inspection we sat down and went over all my options. The whole experience was easy and I didn't feel taken. I would highly recommend Seth and TerraFirma.
Seth. Was great. Very. Professiinal. Thank you Terrafirma Vince
Guys came as scheduled , and did a great job ! Provided us with pictures all looks good ! Thank you

Schedule your free
Foundation Evaluation

Schedule your free
Foundation Evaluation