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TRUSTED BY SEQUIM, WA HOMEOWNERS

  • Average homeowner rating star icon3.8
    Average homeowner rating
  • Verified reviews icon15
    Verified foundation repairs reviews

Find Foundation repair specialists in Sequim

Avatar for Square 1 Venture Group, LLC

Square 1 Venture Group, LLC

4.97(
68
)
Approved Pro

Square 1 Venture Group, LLC

4.97(
68
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
12 years of experience

It doesn't have to be hard to maintain your property. You can turn to Square 1 Venture Group LLC for top-notch Crawl Space services or painting services. We'll take the time to understand your unique needs, then complete your job with expert skill and efficiency. Rely on us to update your residential l property in the Sequim, Port Townsend, Port Angeles areas. Clean outs, Insulation, French Drains, Structural Repairs, Foundation Repairs and more, I have over 35 years in the industry!

"I rate the job of cleaning our power washing our exterior house (great care to not damage the older painting, but cleaned the grime and dirt), and our walkways and driveways. Jon is a lovely man who was very prompt, estimate the time for the job perfectly, and left our old home and exterior in much better than I thought it might look. Don't have any hesitant to hire this company. The charge for the job was very reasonable. Thank you Jon, and I hope to see you again."

Dottie F on June 2023

It doesn't have to be hard to maintain your property. You can turn to Square 1 Venture Group LLC for top-notch Crawl Space services or painting services. We'll take the time to understand your unique needs, then complete your job with expert skill and efficiency. Rely on us to update your residential l property in the Sequim, Port Townsend, Port Angeles areas. Clean outs, Insulation, French Drains, Structural Repairs, Foundation Repairs and more, I have over 35 years in the industry!

"I rate the job of cleaning our power washing our exterior house (great care to not damage the older painting, but cleaned the grime and dirt), and our walkways and driveways. Jon is a lovely man who was very prompt, estimate the time for the job perfectly, and left our old home and exterior in much better than I thought it might look. Don't have any hesitant to hire this company. The charge for the job was very reasonable. Thank you Jon, and I hope to see you again."

Dottie F on June 2023


"Very well. They worked diligently for two days to do the repair."

Bonnie L on October 2025

At Ram Jack West, we treat customers with respect and care. If you notice cracks, damages, or other issues with your foundation, our team is ready to help. We have innovative systems that have been refined over our 40+ years of experience.

"Very well. They worked diligently for two days to do the repair."

Bonnie L on October 2025


Avatar for Groundworks

Groundworks

4.56(
140
)
Approved Pro

Groundworks

4.56(
140
)
Approved Pro
Customers say: Quick response
29 years of experience
Free onsite estimate

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! GROUN**76305

"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! GROUN**76305

"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


Avatar for Groundworks

Groundworks

4.62(
85
)
Approved Pro

Groundworks

4.62(
85
)
Approved Pro
Customers say: True professional
31 years of experience
Free onsite estimate

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.

"Fixed my foundation. Thank you"

Ivan K on December 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.

"Fixed my foundation. Thank you"

Ivan K on December 2025


Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

5.00(
10
)
Approved Pro

TerraFirma Foundation Systems

5.00(
10
)
Approved Pro
Customers say: Quick response
21 years of experience
Free onsite estimate

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


Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

4.51(
67
)
Approved Pro

TerraFirma Foundation Systems

4.51(
67
)
Approved Pro
Customers say: Quick response
21 years of experience
Free onsite estimate

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 a sump pump installed. Haven’t had a repeat of the problem."

Edward H on December 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 a sump pump installed. Haven’t had a repeat of the problem."

Edward H on December 2025


Avatar for Groundworks

Groundworks

New on AngiNew on Angi
Approved Pro

Groundworks

New on AngiNew on Angi
Approved Pro
26 years of experience
Free onsite estimate

Based in Phoenix, AZ, we specialize in foundation repair, basement waterproofing, concrete leveling, and crawl space repair. Serving Arizona, we deliver reliable solutions for businesses and commercial properties. Contact us today!

Based in Phoenix, AZ, we specialize in foundation repair, basement waterproofing, concrete leveling, and crawl space repair. Serving Arizona, we deliver reliable solutions for businesses and commercial properties. Contact us today!


Avatar for SlabJack Geotechnical

SlabJack Geotechnical

5.00(
62
)

SlabJack Geotechnical

5.00(
62
)
Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a family owned and operated business with locations in Spokane, Greater Seattle, Tri-Cities and East Wenatchee WA. Our company's main office is in East Wenatchee, WA. We have been in business since 2011, our contractor license is #slabjg*833k2 we are fully insured (1,000,000) and bonded (12,000) and carry all the appropriate insurances to work on your property without any liability to you. Slabjack Geotechnicals polyurethane injection SlabJacking is far superior to last centuries Mudjacking. Less invasive, longer lasting, better aesthetically and with a superior warranty. We raise settled concrete porches, patios, pool decks, shop floors, driveways, sidewalks, garage and basement floors, if it's a slab we raise it! We also underseal slabs with voids, rocking driveway and warehouse slabs. If you suspect voids we have the exact material for the problem. We seal leaking culverts, large diameter pipe, Seawall and Bulkheads, and under-seal concrete ditches and spillways. We also seal many thousands of feet of control joints and cracks in concrete using the best Silicones, Polyurea's and Polyurethanes. Other common names for our services are "pressure grouting" "chemical grouting" "SlabJacking" "Polylevel" and "Mudjacking" We are licensed in the state of Washington and Idaho. We accept Visa, MasterCard and Discover in addition to Business & Personal checks.

"Justin and Dustin were very professional and did a great job with a panel lift and filling cracks in the HOA's concrete cart path."

Rick B on August 2025

We are a family owned and operated business with locations in Spokane, Greater Seattle, Tri-Cities and East Wenatchee WA. Our company's main office is in East Wenatchee, WA. We have been in business since 2011, our contractor license is #slabjg*833k2 we are fully insured (1,000,000) and bonded (12,000) and carry all the appropriate insurances to work on your property without any liability to you. Slabjack Geotechnicals polyurethane injection SlabJacking is far superior to last centuries Mudjacking. Less invasive, longer lasting, better aesthetically and with a superior warranty. We raise settled concrete porches, patios, pool decks, shop floors, driveways, sidewalks, garage and basement floors, if it's a slab we raise it! We also underseal slabs with voids, rocking driveway and warehouse slabs. If you suspect voids we have the exact material for the problem. We seal leaking culverts, large diameter pipe, Seawall and Bulkheads, and under-seal concrete ditches and spillways. We also seal many thousands of feet of control joints and cracks in concrete using the best Silicones, Polyurea's and Polyurethanes. Other common names for our services are "pressure grouting" "chemical grouting" "SlabJacking" "Polylevel" and "Mudjacking" We are licensed in the state of Washington and Idaho. We accept Visa, MasterCard and Discover in addition to Business & Personal checks.

"Justin and Dustin were very professional and did a great job with a panel lift and filling cracks in the HOA's concrete cart path."

Rick B on August 2025


WESTERN CONSTRUCTION SYSTEMS

4.85(
26
)

WESTERN CONSTRUCTION SYSTEMS

4.85(
26
)
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

Not a franchise, Family owned and operated since 1987. CCB# 94222, Serving the entire NW. FREE Estimates/ Inspections. Western Construction Systems LLC. is a locally owned, family owned and operated specialty construction company serving the entire north-west. WCS LLC. Prides its self in high quality work which is micro-managed by highly trained crews to ensure the highest level of confidant work. WCS LLC. Has also worked internationally in South America and currently has crews in Haiti. We have worked as far south as El Salvador and as far north as Alaska. We are able to attend to small residential job as well as large industrial projects.

"Western Construction Systems came out and did exceptional work at my house! They went above and beyond my expectations! They were friendly, professional, and hard-working! They took care of all the issues that I had concerns with and then some! Their prices were fair, especially for the high quality of work that they did! I know I pestered them with questions, but they were patient every single time. Before I contacted them to have the work done, I had high anxiety about the drainage issues. When they were finished, I felt confident that there were no more issues. Peace of mind is priceless!"

Robyn S on August 2022

Not a franchise, Family owned and operated since 1987. CCB# 94222, Serving the entire NW. FREE Estimates/ Inspections. Western Construction Systems LLC. is a locally owned, family owned and operated specialty construction company serving the entire north-west. WCS LLC. Prides its self in high quality work which is micro-managed by highly trained crews to ensure the highest level of confidant work. WCS LLC. Has also worked internationally in South America and currently has crews in Haiti. We have worked as far south as El Salvador and as far north as Alaska. We are able to attend to small residential job as well as large industrial projects.

"Western Construction Systems came out and did exceptional work at my house! They went above and beyond my expectations! They were friendly, professional, and hard-working! They took care of all the issues that I had concerns with and then some! Their prices were fair, especially for the high quality of work that they did! I know I pestered them with questions, but they were patient every single time. Before I contacted them to have the work done, I had high anxiety about the drainage issues. When they were finished, I felt confident that there were no more issues. Peace of mind is priceless!"

Robyn S on August 2022


Kattau Construction

5.00(
7
)

Kattau Construction

5.00(
7
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

General Contractor - new construction and remodels from affordable to extravaganza! We are a small family business in the Port Angeles, Washington area for over 15 years, serving all of Clallam County.

General Contractor - new construction and remodels from affordable to extravaganza! We are a small family business in the Port Angeles, Washington area for over 15 years, serving all of Clallam County.

Showing 1-10 of 32
Foundation Repair questions, answered by experts

Water damage to a foundation often starts as a slow leak or water vapor problem that worsens over the course of months or even years. The speed at which foundation leaks worsen depends on a few factors, including your climate and location, the soil composition around your home, the foundation drainage system you have in place, if any, and the type of foundation you have. Even if you have a minor issue that’s slow to develop, it’s best to have a professional address the issue immediately.

Most of the time, normal foundation settling will present as thin cracks in the foundation and minor creaks in the floorboards. In contrast, you can identify foundation issues by wide or uneven foundation cracks, horizontal or step-shaped gaps on the foundation wall, or cracks that go around corners of your foundation. Foundation problems can also cause changes in your living area, like increased humidity, uneven or sloping floors, nail pops in drywall, countertops pulling away from the wall, and windows and doors getting stuck. When in doubt, call in a professional to identify the underlying cause.

Cracks, shifting, or uneven floors indicate potential foundation issues.

You have different options depending on the scale of repair needed. If you are repairing minor cracks that are between ¼ inch to 1.5 inch wide and less than half an inch deep, a self-leveling polyurethane sealant would be your best choice. Polyurethane sealants dry to the touch within one to two hours. Since they come in a tube applier, you also have the option to complete the repair without emptying out your garage.

Regular inspections, proper drainage management, and ensuring soil stability help prevent future settlement issues.

The Sequim, WA homeowners’ guide to foundation repairs

From average costs to expert advice, get all the answers you need to get your job done.

What do you need done? We’ll find top pros.
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