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TRUSTED BY UNION, WA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon106
    Verified foundation repairs reviews

Find Foundation repair specialists in Union

Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

5.00(
8
)
Approved Pro

TerraFirma Foundation Systems

5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
94 local quotes requested

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 Groundworks

Groundworks

4.44(
162
)
Approved Pro

Groundworks

4.44(
162
)
Approved Pro
Customers say: Super punctual
41 local quotes requested
28 years of experience

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


"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 Advanced Foundation Supports, LLC

Advanced Foundation Supports, LLC

5.00(
2
)
Approved Pro

Advanced Foundation Supports, LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
45 years of experience

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



Mikes Handyman Services

4.25(
8
)

Mikes Handyman Services

4.25(
8
)
Customers say: Quick response
37 years of experience

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"I would never hire this guy again. He did not complete the job to my specifications"

Amanda R on April 2025

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

"I would never hire this guy again. He did not complete the job to my specifications"

Amanda R on April 2025


Avatar for Seattle Foundation Repair

Seattle Foundation Repair

3.00(
2
)

Seattle Foundation Repair

3.00(
2
)

Each year sinking foundations, cracked and buckled walls, and cracked and uneven floors affect millions of families. Buildings situated on unstable soils will settle when the foundation is subjected to moisture or poor drainage. A shifting foundation could result in structural damage and potentially, a loss of your investment. Foundation problems should be addressed as soon as they are discovered before the damage is irreversible. If you notice any of these signs, call us at Seattle Foundation Repair to protect your property value and ensure the safety of your home.

"I contacted them for work and have regretted it ever since. They pull you around and act responsive until the rubber hits the road to take action, ghosting me ever since. They billed me 900 dollars for something they did not do. They promised to bury the concrete they dug up and broke their word. I texted the owner until he stopped responding. I emailed them until they stopped responding—terrible company to work with."

David C on December 2024

Each year sinking foundations, cracked and buckled walls, and cracked and uneven floors affect millions of families. Buildings situated on unstable soils will settle when the foundation is subjected to moisture or poor drainage. A shifting foundation could result in structural damage and potentially, a loss of your investment. Foundation problems should be addressed as soon as they are discovered before the damage is irreversible. If you notice any of these signs, call us at Seattle Foundation Repair to protect your property value and ensure the safety of your home.

"I contacted them for work and have regretted it ever since. They pull you around and act responsive until the rubber hits the road to take action, ghosting me ever since. They billed me 900 dollars for something they did not do. They promised to bury the concrete they dug up and broke their word. I texted the owner until he stopped responding. I emailed them until they stopped responding—terrible company to work with."

David C on December 2024


Sejant Foundation Restoration

No reviews yet

Sejant Foundation Restoration

No reviews yet

We provide foundation repair services for residential and commercial buildings which are experiencing shifting, cracking, or settling to insure they maintain their value. Unlike most companies, we don't have a patented system we must use. With us, each project is unique and we use the best solution. We have 10+ years experience in the foundation repair business, and are a locally owned company. This means this is our passion, not just a job.

We provide foundation repair services for residential and commercial buildings which are experiencing shifting, cracking, or settling to insure they maintain their value. Unlike most companies, we don't have a patented system we must use. With us, each project is unique and we use the best solution. We have 10+ years experience in the foundation repair business, and are a locally owned company. This means this is our passion, not just a job.



Avatar for Strong Foundations Home Inspection

Strong Foundations Home Inspection

5.00(
44
)

Strong Foundations Home Inspection

5.00(
44
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

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

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Foundation Repair questions, answered by experts

Crumbling concrete steps will affect your ability to drill into the material and affix a sturdy railing. If the damage is primarily cosmetic, you might be able to DIY the repair with a patch kit. If the concrete is badly crumbling, hire a professional who specializes in pouring concrete. The average concrete step repair cost is $500 from a professional, but the extent of the damage will determine your actual cost. The professional may recommend a replacement if the damage is extensive.

Depending on the severity, a slab leak can go undetected for months or even years, especially if you don’t carry out routine foundation inspections to find foundation leaks early. However, minor leaks are likely to turn into more severe leaks over time, so you might notice increases in water bills and issues with yard drainage, even if the problem is minor.

Foundation cracks that are 1/8 inch wide or less, aren’t uneven across the gap, and don’t continue widening over time are usually just normal settling cracks and don’t suggest structural issues. Horizontal cracks and stair-step cracks on foundation walls, any cracks that continue widening, are wider than 1/8 inch, or where one side juts out beyond the other, are often indicative of structural damage.

Yes. A foundation wall can usually be replaced, but you’ll want to call a foundation professional.

Yes, it is worth repairing concrete cracks. Concrete cracks are normal, and they can be hard to keep from appearing. However, it is worth repairing cracks in concrete for many reasons. For example, it’s possible to repair concrete to the point where the repair is almost invisible. Also, if the crack is left alone, it can become bigger and more expensive to fix over time.

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.