
Get matched with top foundation repair specialists in Union, WA
There are 5 highly-rated local foundation repair specialists.
Need a pro for your foundation repair project in Union, WA?
TRUSTED BY UNION, WA HOMEOWNERS
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Verified Reviews for Foundation Repair pros in Union, WA
*The Angi rating for Foundation Repair companies in Union, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.
*The HomeAdvisor rating for Foundation Repair companies in Union, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Foundation Repair needs.
Last update on December 02, 2025
Find Foundation repair specialists in Union

Ram Jack West - Seattle
Ram Jack West - Seattle
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
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

Groundworks
Groundworks
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

TerraFirma Foundation Systems
TerraFirma Foundation Systems
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

TerraFirma Foundation Systems
TerraFirma Foundation Systems
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.
"Good and fair estimate. Good solution to our problem. The team were very professional and produced excellent results."
Stuart D on November 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.
"Good and fair estimate. Good solution to our problem. The team were very professional and produced excellent results."
Stuart D on November 2025

Ram Jack West
Ram Jack West
We're dedicated to providing our clients with the very best in foundation repair, house lifting, pile driving, drilling and a variety of other projects. With over 15 years of industry experience, we take an enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.
"The sales man offered me leveling and light of my foundation. The end result was my doors not being able to close, more cracking in my sheet rock on the walls and on the ceiling. The house is not level and now Iâ  m seeking options to fix this whole debacle. Ram Jack West is sales based, not service based. Please do research before you make a $30,000 to have hire a company to repair your foundation, working with them is one of my biggest lifetime regrets."
Steven R on September 2023
We're dedicated to providing our clients with the very best in foundation repair, house lifting, pile driving, drilling and a variety of other projects. With over 15 years of industry experience, we take an enormous amount of pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients and guarantee your satisfaction.
"The sales man offered me leveling and light of my foundation. The end result was my doors not being able to close, more cracking in my sheet rock on the walls and on the ceiling. The house is not level and now Iâ  m seeking options to fix this whole debacle. Ram Jack West is sales based, not service based. Please do research before you make a $30,000 to have hire a company to repair your foundation, working with them is one of my biggest lifetime regrets."
Steven R on September 2023

Advanced Foundation Supports, LLC
Advanced Foundation Supports, LLC
We are dedicated to providing our clients with the very best in concrete foundation repair. With over 30 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.
"Professional,knowledgeable and straight forward. I wouldn't hesitate to hire them again and have been recommending them to my contractor friends."
Tony L on July 2018
We are dedicated to providing our clients with the very best in concrete foundation repair. With over 30 years of industry experience, we take and enormous amount of pride in the attention to detail put into each of the projects we are involved with. We are known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.
"Professional,knowledgeable and straight forward. I wouldn't hesitate to hire them again and have been recommending them to my contractor friends."
Tony L on July 2018

Groundworks
Groundworks
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!

Strong Foundations Home Inspection
Strong Foundations Home Inspection
Our mission is to provide peace of mind to the homeowner and home buyer; to leverage our experience and expertise in order to ensure that you know everything you need to know about your home. We excel in helping both experienced and first-time home buyers to understand their home better, and to feel comfortable with their surroundings. We will take the time needed to patiently walk a homeowner or buyer through each aspect of their home, from the foundation to the roof and everything in between to ensure familiarity and comfort with the structure and the systems. For the real estate agent, we understand how important it is to be honest and trustworthy, but never alarmist. It is not our job to create a sense of fear or to prevent the home from being purchased. Instead, it is our job to inform the client of the home's current condition, while providing practical advice on how to repair or maintain the home going forward. Making sure the customer feels comfortable with the home they are purchasing is the first step toward a successful transaction. We offer: FREE Thermal Imaging on all standard Home Inspections (most inspectors charge extra, if offered at all) FREE RecallCheks for appliances FREE Home Maintenance Manuals for all clients AND MORE!
"Isaac was thorough, and his report was exhaustive and complete. We are moving forward with a ton of confidence. He was timely, helpful, and friendly. He walked me through the whole house and showed me the issues and areas of concern along the way."
Jake S on September 2025
Our mission is to provide peace of mind to the homeowner and home buyer; to leverage our experience and expertise in order to ensure that you know everything you need to know about your home. We excel in helping both experienced and first-time home buyers to understand their home better, and to feel comfortable with their surroundings. We will take the time needed to patiently walk a homeowner or buyer through each aspect of their home, from the foundation to the roof and everything in between to ensure familiarity and comfort with the structure and the systems. For the real estate agent, we understand how important it is to be honest and trustworthy, but never alarmist. It is not our job to create a sense of fear or to prevent the home from being purchased. Instead, it is our job to inform the client of the home's current condition, while providing practical advice on how to repair or maintain the home going forward. Making sure the customer feels comfortable with the home they are purchasing is the first step toward a successful transaction. We offer: FREE Thermal Imaging on all standard Home Inspections (most inspectors charge extra, if offered at all) FREE RecallCheks for appliances FREE Home Maintenance Manuals for all clients AND MORE!
"Isaac was thorough, and his report was exhaustive and complete. We are moving forward with a ton of confidence. He was timely, helpful, and friendly. He walked me through the whole house and showed me the issues and areas of concern along the way."
Jake S on September 2025

ESG Design
ESG Design
ESG Design is your source for licensed professional structural engineering services. At ESG Design, our goal is to provide our clients with expert advise, professional service, and the highest quality Engineering and Architectural design work. We are a local small business focused on the unique needs of each customer and your specific project. Whether you are looking for preliminary design feasibility advice, standard construction plans engineering, or detailed structural performance analysis, ESG Design is here to support you. Email us at: [email protected]
"The communication was excellent! I really felt comfortable working with Eli and ESG. He went the extra mile to ensure my questions were answered. I would definitely hire ESG again."
Seth G on January 2022
ESG Design is your source for licensed professional structural engineering services. At ESG Design, our goal is to provide our clients with expert advise, professional service, and the highest quality Engineering and Architectural design work. We are a local small business focused on the unique needs of each customer and your specific project. Whether you are looking for preliminary design feasibility advice, standard construction plans engineering, or detailed structural performance analysis, ESG Design is here to support you. Email us at: [email protected]
"The communication was excellent! I really felt comfortable working with Eli and ESG. He went the extra mile to ensure my questions were answered. I would definitely hire ESG again."
Seth G on January 2022
A Better Crawl Inc
A Better Crawl Inc
A Better Crawl, Inc. email- [email protected]. Service area covered: Kitsap, Mason and parts of Pierce county, The Kitsap and Olympic Peninsulas, Olympia and vicinity.
"What did we not need...? They quickly and efficiently replaced everything in our crawlspace... insulation, missing screens, open external access, etc. And they installed a barrier beneath a bay window that had allowed animal access to the crawlspace ever since the home was built in the 80s. Very professional and friendly. I highly recommend them!"
Robert S on July 2018
A Better Crawl, Inc. email- [email protected]. Service area covered: Kitsap, Mason and parts of Pierce county, The Kitsap and Olympic Peninsulas, Olympia and vicinity.
"What did we not need...? They quickly and efficiently replaced everything in our crawlspace... insulation, missing screens, open external access, etc. And they installed a barrier beneath a bay window that had allowed animal access to the crawlspace ever since the home was built in the 80s. Very professional and friendly. I highly recommend them!"
Robert S on July 2018
The Union, WA homeowners’ guide to foundation repairs
From average costs to expert advice, get all the answers you need to get your job done.

When a sill plate begins to crumble, it needs to be replaced ASAP. But how much does sill plate replacement cost? Here's what you need to know.

Plumbing leaks are never fun, but they’re worse when they happen inside your foundation. Use this guide to slab leak repair costs to see what you’re up against.

A foundation for a new-build home averages around $11,000. Find out all the factors that affect the cost of a foundation and how to save money.

Concrete blocks and poured concrete are both common foundation materials. Learn the key differences between block and poured foundations.

Knowing how to hire a foundation repair contractor can be the difference between a permanent fix and more problems. Learn what to look for in this guide.

A house’s history of foundation repairs doesn’t always mean you shouldn’t buy it. Learn what to consider when purchasing a house with an unstable past.
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