Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"We needed some posts in our basement replaced with proper footings. TerraFirma was quick to respond and quick to do the work. We are very happy with the result and would recommend."
Nicole C on December 2024
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"We needed some posts in our basement replaced with proper footings. TerraFirma was quick to respond and quick to do the work. We are very happy with the result and would recommend."
Nicole C on December 2024
Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the Seattle area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"Groundworks did a great job getting us through the design, permit, and installation. The construction team, lead by Marcos, did a great job communicating with us what as the project was installed. They did such a good job cleaning and replacing the dirt that you?d never know they were here. Great job!"
Paul E on June 2025
Groundworks specializes in helping homeowners with their residential and commercial foundation repair, basement waterproofing and wall repair, and concrete repair needs. Our top priority is providing high-quality home repair solutions and personalized service across the Seattle area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.
"Groundworks did a great job getting us through the design, permit, and installation. The construction team, lead by Marcos, did a great job communicating with us what as the project was installed. They did such a good job cleaning and replacing the dirt that you?d never know they were here. Great job!"
Paul E on June 2025
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Had huge foundation problems at a project of mine on the waterfront. We used terrafirma to both waterproof the entire basement AND lift the foundation. 10/10 would recommend. extremely communicative, very knowledgeable, and even brought a crew in from Oregon to help us stay on schedule. Oscar and jorge got the job done extremely quickly and Seth was fantastic as my project manager. "
Ian G on May 2025
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Had huge foundation problems at a project of mine on the waterfront. We used terrafirma to both waterproof the entire basement AND lift the foundation. 10/10 would recommend. extremely communicative, very knowledgeable, and even brought a crew in from Oregon to help us stay on schedule. Oscar and jorge got the job done extremely quickly and Seth was fantastic as my project manager. "
Ian G on May 2025
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Great; competitive price, installation went great, friendly and responsive staff in person and office"
Andrew M on February 2020
Thousands of NW homeowners have trusted TerraFirma Foundation Systems to keep their homes safe, dry and stable since 2005. Nearly half of our business comes from referrals or repeat customers. We can help you too! TerraFirma is the NW expert in home foundations, basement and crawl space waterproofing, concrete leveling, and wall stabilization.
"Great; competitive price, installation went great, friendly and responsive staff in person and office"
Andrew M on February 2020
Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE!
"Very informative. Clear and concise. Gave us many options. Daniel is a wonderful and honest person and was so helpful with our questions. The crew lead by Anthony, with Jordan, Uriel, and Richard did professional work. The finished product is wonderful and can already feel the results in the house. Would 1000% recommend. Just keep in mind it is a very messy job. These guys do the best they can to keep it clean"
Charles W on May 2025
Groundworks, formerly, Matvey Foundation Repair is the leading structural and concrete repair firm in Western Washington. We specialize in repairing residential and commercial foundations, concrete slabs, bowing/cracked basement walls, sinking floors, concrete porches, settling/cracked foundations, and other structural issues. We raise and level concrete pavements, driveways, and sidewalks. We also offer basement waterproofing. Our expert design technicians provide professional services for commercial, residential, industrial, government, and municipal applications with award-winning products and superior customer service. CALL US TODAY FOR A FREE ESTIMATE!
"Very informative. Clear and concise. Gave us many options. Daniel is a wonderful and honest person and was so helpful with our questions. The crew lead by Anthony, with Jordan, Uriel, and Richard did professional work. The finished product is wonderful and can already feel the results in the house. Would 1000% recommend. Just keep in mind it is a very messy job. These guys do the best they can to keep it clean"
Charles W on May 2025
Family owned business with over 10 years experience- Landscaping - Hardscaping & Pavers - Painting - Pressure Washing - Drywall Repair -
"Awesome! Super hard worker, who goes above and beyond to deliver customer satisfaction. Excellent value and trustworthy"
Richard p on March 2025
Family owned business with over 10 years experience- Landscaping - Hardscaping & Pavers - Painting - Pressure Washing - Drywall Repair -
"Awesome! Super hard worker, who goes above and beyond to deliver customer satisfaction. Excellent value and trustworthy"
Richard p on March 2025
Your satisfaction is very important to us. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.
"If I could do minus on the stars I would give a -5 stars. This company is horrible and Skylar Jump is rude beyond beleif. He came out and did the bid for the job, and he told me what it would cost me. 1/2 down and the other 1/2 upon completion of the job. They installed new drywall but did not make it flush at the corners, leaving big gaps and putting in large gouges. He and his crew left garbage all over the yard, stole materials and left my house compromised and exposed to the elements. Also damaged some of my vintage furniture from the Hoquiam Castle. So no replacing those. He was calling me and his crew inappropriate names and telling me that I don't listen, constantly interrupting me and told me that my family member who is an expert in siding doesn't know anything and started dising people. Also will not give you a receipt for money paid and will not give you a break down of the job. Also, when picking up materials from Home Depot, he will charge materials for another job onto your account. Do not hire this company unless you want to punish yourself and lose your money."
Kim L on November 2024
Your satisfaction is very important to us. We pride ourselves on the quality work we provide, while delivering great customer service! Check out our services offered and call or click to schedule a free estimate today.
"If I could do minus on the stars I would give a -5 stars. This company is horrible and Skylar Jump is rude beyond beleif. He came out and did the bid for the job, and he told me what it would cost me. 1/2 down and the other 1/2 upon completion of the job. They installed new drywall but did not make it flush at the corners, leaving big gaps and putting in large gouges. He and his crew left garbage all over the yard, stole materials and left my house compromised and exposed to the elements. Also damaged some of my vintage furniture from the Hoquiam Castle. So no replacing those. He was calling me and his crew inappropriate names and telling me that I don't listen, constantly interrupting me and told me that my family member who is an expert in siding doesn't know anything and started dising people. Also will not give you a receipt for money paid and will not give you a break down of the job. Also, when picking up materials from Home Depot, he will charge materials for another job onto your account. Do not hire this company unless you want to punish yourself and lose your money."
Kim L on November 2024
We have the experience and dedication to get the job done right! Specializing in landscaping services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!
"Project was good"
Leo H on May 2025
We have the experience and dedication to get the job done right! Specializing in landscaping services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!
"Project was good"
Leo H on May 2025
Full service Residential and Commercial landscaping which includes: Mowing, Edging, Aerating, Over-seeding, Thatching, Installation, Application, and Removal. At Evergreen Landscaping we believe in consistently raising the standard in customer satisfaction, communication, and professionalism. Staffed with over 15 years of carpentry and landscaping experience, no job is too big or too small and will be treated with the same amount of professionalism. Landscaping made simple.
Full service Residential and Commercial landscaping which includes: Mowing, Edging, Aerating, Over-seeding, Thatching, Installation, Application, and Removal. At Evergreen Landscaping we believe in consistently raising the standard in customer satisfaction, communication, and professionalism. Staffed with over 15 years of carpentry and landscaping experience, no job is too big or too small and will be treated with the same amount of professionalism. Landscaping made simple.
We have been in the construction business for over 20 years. If you can dream it we can make it happen for you. I promise that you will want to work with us instead of the other people because of just 1 thing and that would be our warranty. We don't give you the regular 1 year and so on. We are so confident and amazing at what we do that you can call 5 years down the road and we will come fix it.
We have been in the construction business for over 20 years. If you can dream it we can make it happen for you. I promise that you will want to work with us instead of the other people because of just 1 thing and that would be our warranty. We don't give you the regular 1 year and so on. We are so confident and amazing at what we do that you can call 5 years down the road and we will come fix it.
Expect a well-built French drain to last 30 to 40 years. By channeling both surface- and ground-water away from your foundation, the system relieves hydrostatic pressure and helps prevent costly structural damage. Choose a pipe with a quality cloth filter to keep sediment out and extend the drain’s life. A quick annual inspection and routine cleanouts will keep water flowing freely, ensuring the system continues to protect your home for years to come.
Most French drains sit two feet below grade, but depth ultimately depends on the problem you’re solving. For puddling rainwater or snowmelt, a shallow curtain drain at lawn level often does the trick. To handle rising groundwater, pros dig deeper, down to the footing, and run the pipe beneath the basement slab. A drainage contractor will determine the optimal depth for your specific soil conditions and water issues.
A properly installed interior French drain captures water at the slab, channels it to a sump pit, and directs it safely outside, preventing basement floods before they occur. Because the pipe sits just under the floor edge, a plumber can reach it easily for cleaning or repairs. Pairing the drain with a reliable sump pump gives you the best long-term protection.
Hire a contractor who installs drainage systems every day—typically a foundation specialist, drainage contractor, experienced landscaper, or plumber with waterproofing experience. These pros understand slope, soil, and local codes, and they have the equipment to trench safely around utilities. Ask for references and photos of recent jobs to be sure they can design a system that keeps water off your foundation for decades.
Once the drain is in, patch the yard by reseeding bare spots or replacing plants the crew removed. Inside, look for ways to add value—finishing the basement or upgrading interior waterproofing while the space is open often costs less now than later. Schedule a quick annual checkup to flush sediment and confirm the pipe and sump pump are clear. Consistent maintenance ensures the drain functions properly and protects your investment.
Most policies don’t cover the cost of repairing a French drain itself, but they may provide coverage for water damage if the system fails. Coverage varies by insurer, so be sure to read the fine print or contact your agent before any issues arise. If you live in a high-risk flood zone, consider a separate flood policy to close the gap. Knowing your coverage in advance helps you budget for repairs and avoid unexpected costs.