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Verified Reviews for Foundation Repair pros in Union Gap, WA

*The Angi rating for Foundation Repair companies in Union Gap, 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 Gap, 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 November 30, 2025

Find Foundation repair specialists in Union Gap

Avatar for TerraFirma Foundation Systems

TerraFirma Foundation Systems

4.73(
165
)
•Approved Pro

TerraFirma Foundation Systems

4.73(
165
)
•Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
77 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.

"I hired TerraFirma Foundation Systems to level my home, expecting a professional job with clear communication, but the entire experience has been incredibly disappointing and costly. From the start, I hired the company to level the floors in my home, specifically to address a nearly 3-inch dip in my kitchen area, a 13x10 room. Yet after they “completed the job,” I still have a 1.5-inch dip in the center of the kitchen, and a corner of my home/kitchen that sits half an inch higher than it should be (above 0%), creating a full inch rise from the living room to the kitchen. Now they’re saying that leveling the kitchen wasn’t included in the original scope, blaming the remaining dip on my kitchen island and fridge being “too heavy” and lacking proper support—an issue they failed to identify in the initial assessment. To properly address this problem, they’re now asking for an additional $7,500, claiming this work was never part of the original job. This feels like a classic bait-and-switch tactic, and I can’t help but feel taken advantage of. To make matters worse, I discovered that they used an uncalibrated machine during the initial leveling when installing, which raised my house over an inch more than necessary, causing significant damage that wasn’t there before. Partway through the lift, they even asked me to sign a waiver to get my house closer to 0% level, effectively absolving them of any damage caused. The technician stopped mid-lift to show me the damage that was already occurring and warned that more would likely follow if we continued. I agreed to proceed, trusting their assurances and assuming their equipment was properly calibrated. I even pointed out to the technician at the time that it did not look level, and he assured me the machine was correct. Now, they refuse to take any responsibility for the resulting damage, dismissing it as “standard” and providing terms within the contract absolving them—despite them overcorrecting the home. There were also repeated measurement discrepancies, with reports showing one reading and verbal statements/emails suggesting different levels. When I sought clarification, I received vague responses and empty apologies. After all this, and nearly $30,000 invested, my floor remains unleveled. The only resolution TerraFirma Foundation Systems has offered is for me to pay additional money to level the kitchen and to wait for the overcorrected area to “settle naturally”—a process that, according to their technician, could take anywhere from two months to ten years. I hired TerraFirma Foundation Systems to fully level my home, not to leave me with an incomplete job, inconsistent results, and vague promises. If you’re considering foundation work, I strongly recommend looking elsewhere—this company has left me with extensive damage, unexpected costs, and a significant amount of frustration."

Chuck G on November 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.

"I hired TerraFirma Foundation Systems to level my home, expecting a professional job with clear communication, but the entire experience has been incredibly disappointing and costly. From the start, I hired the company to level the floors in my home, specifically to address a nearly 3-inch dip in my kitchen area, a 13x10 room. Yet after they “completed the job,” I still have a 1.5-inch dip in the center of the kitchen, and a corner of my home/kitchen that sits half an inch higher than it should be (above 0%), creating a full inch rise from the living room to the kitchen. Now they’re saying that leveling the kitchen wasn’t included in the original scope, blaming the remaining dip on my kitchen island and fridge being “too heavy” and lacking proper support—an issue they failed to identify in the initial assessment. To properly address this problem, they’re now asking for an additional $7,500, claiming this work was never part of the original job. This feels like a classic bait-and-switch tactic, and I can’t help but feel taken advantage of. To make matters worse, I discovered that they used an uncalibrated machine during the initial leveling when installing, which raised my house over an inch more than necessary, causing significant damage that wasn’t there before. Partway through the lift, they even asked me to sign a waiver to get my house closer to 0% level, effectively absolving them of any damage caused. The technician stopped mid-lift to show me the damage that was already occurring and warned that more would likely follow if we continued. I agreed to proceed, trusting their assurances and assuming their equipment was properly calibrated. I even pointed out to the technician at the time that it did not look level, and he assured me the machine was correct. Now, they refuse to take any responsibility for the resulting damage, dismissing it as “standard” and providing terms within the contract absolving them—despite them overcorrecting the home. There were also repeated measurement discrepancies, with reports showing one reading and verbal statements/emails suggesting different levels. When I sought clarification, I received vague responses and empty apologies. After all this, and nearly $30,000 invested, my floor remains unleveled. The only resolution TerraFirma Foundation Systems has offered is for me to pay additional money to level the kitchen and to wait for the overcorrected area to “settle naturally”—a process that, according to their technician, could take anywhere from two months to ten years. I hired TerraFirma Foundation Systems to fully level my home, not to leave me with an incomplete job, inconsistent results, and vague promises. If you’re considering foundation work, I strongly recommend looking elsewhere—this company has left me with extensive damage, unexpected costs, and a significant amount of frustration."

Chuck G on November 2024

Avatar for Ram Jack West - Seattle

Ram Jack West - Seattle

5.00(
14
)
•Approved Pro

Ram Jack West - Seattle

5.00(
14
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 local quotes requested

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

Avatar for MTU Services LLC

MTU Services LLC

5.00(
5
)
•Approved Pro

MTU Services LLC

5.00(
5
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
74 local quotes requested

Protect the investment you’ve made with the knowledgeable team at MTU Services LLC. We are your local basement and foundation experts serving all of Washington state and North Idaho. We offer customized basement waterproofing, foundation repair, concrete crack repair, and basement sump pump solutions and egress windows for your home. Contact MTU Services LLC today to learn more about how we can help you protect your home. Give us a call to request a quote or to schedule service. Services include: leaking basement or crawl space repairs, foundation cracks repaired, lifting piers and levelling for your home or building, sup um systems and more.

"The project at xxxxx was complete last Thursday. Impressive is an understatement for Jesse and his crew. Excellent communication; excellent followthrough and project completed within estimated timeline and completed as quoted. From our original contact with MTU Services on Aug 20th, through the proposal, scheduling and actual project, MTU has provided service excellence! Thank you!!! I recommend MTU services!"

Gina B on October 2025

Protect the investment you’ve made with the knowledgeable team at MTU Services LLC. We are your local basement and foundation experts serving all of Washington state and North Idaho. We offer customized basement waterproofing, foundation repair, concrete crack repair, and basement sump pump solutions and egress windows for your home. Contact MTU Services LLC today to learn more about how we can help you protect your home. Give us a call to request a quote or to schedule service. Services include: leaking basement or crawl space repairs, foundation cracks repaired, lifting piers and levelling for your home or building, sup um systems and more.

"The project at xxxxx was complete last Thursday. Impressive is an understatement for Jesse and his crew. Excellent communication; excellent followthrough and project completed within estimated timeline and completed as quoted. From our original contact with MTU Services on Aug 20th, through the proposal, scheduling and actual project, MTU has provided service excellence! Thank you!!! I recommend MTU services!"

Gina B on October 2025

DM construction

No reviews yet

DM construction

No reviews yet

With more than 20 years of experience in the commercial and residential side of general contracting and road work /excavation. We are committed to provide the best quality and price of work . Services we offer : -Digging/Site prep -Trenching -Shoring -Land clearing -Foundation work -Underground utilities -Grading -Concrete Contact us for a free quote . For any of your excavation or contracting needs

With more than 20 years of experience in the commercial and residential side of general contracting and road work /excavation. We are committed to provide the best quality and price of work . Services we offer : -Digging/Site prep -Trenching -Shoring -Land clearing -Foundation work -Underground utilities -Grading -Concrete Contact us for a free quote . For any of your excavation or contracting needs

custom classics

No reviews yet

custom classics

No reviews yet
11 years of experience

Custom Classics is a general contracting company. we specialize to homeowners and business owners alike. NO matter how big or small we do it all... we offer the highest quality of service and reliability. SO don't be discouraged if you have small projects or repairs it is all the same to us.

Custom Classics is a general contracting company. we specialize to homeowners and business owners alike. NO matter how big or small we do it all... we offer the highest quality of service and reliability. SO don't be discouraged if you have small projects or repairs it is all the same to us.

Avatar for On Level Services

On Level Services

No reviews yet

On Level Services

No reviews yet
29 years of experience

Primary service is the re-leveling of Mobile Homes and the repair and refurbishing of Mobile Home foundations. Since Angies list doesn't offer this business category as an option I had to list other categories that got close.

Primary service is the re-leveling of Mobile Homes and the repair and refurbishing of Mobile Home foundations. Since Angies list doesn't offer this business category as an option I had to list other categories that got close.

Douglas A Hatfield

No reviews yet

Douglas A Hatfield

No reviews yet
30 years of experience

I work with my clients to provide a management buffer between them and their needs. I'm available 24 hours a day as needed for emergencies and consultation. All requests are quoted an estimate and work is started asap. I am able to get about anything done and have the most knowledgable and competant associates to bring you quality solutions. I work with you to make sure you have coverd all of your options and are making an educated decision to minimize any adverse repercushions. I do all work myself except when necessary professional assistance is required. I am associated with the finest craftsmen available representing all trades. My goal and soul ambition is to provide the highest quality craftsmenship and materials to satisfy all of your expectations without disapointment at a fair price without surprizes at the end. Thank you for your time and consideration. References available.

I work with my clients to provide a management buffer between them and their needs. I'm available 24 hours a day as needed for emergencies and consultation. All requests are quoted an estimate and work is started asap. I am able to get about anything done and have the most knowledgable and competant associates to bring you quality solutions. I work with you to make sure you have coverd all of your options and are making an educated decision to minimize any adverse repercushions. I do all work myself except when necessary professional assistance is required. I am associated with the finest craftsmen available representing all trades. My goal and soul ambition is to provide the highest quality craftsmenship and materials to satisfy all of your expectations without disapointment at a fair price without surprizes at the end. Thank you for your time and consideration. References available.

MOLLETT CONSTRUCTION CO INC

No reviews yet

MOLLETT CONSTRUCTION CO INC

No reviews yet
38 years of experience

We are an established company and have been in business of insurance claim restoration for over 20 years. We are a preferred contractor with several insurance companies using the contractors Xactimate program. We have 24hr a day emergency service, and our service area is from the Pass to Grandview.

We are an established company and have been in business of insurance claim restoration for over 20 years. We are a preferred contractor with several insurance companies using the contractors Xactimate program. We have 24hr a day emergency service, and our service area is from the Pass to Grandview.

TRUSS T BUILT

5.00(
1
)

TRUSS T BUILT

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Truss T Built is proud to be a small business; small businesses are what keep the economy fueled. We provide general contracting on residential and light commercial projects. Other services include demolition, window and siding replacement, decks, fences and painting. As owner of this company, I have had training in lead based paint removal and am a lead certified renovator. I have been in this line of work for over 12 years, starting out as a sole proprietor in 2001, with the company name of Straight-Line Construction. My company's annual revenue ranges from $200,000 to $500,000. The average job size (in dollars) ranges anywhere from $2,000 to $30,000. I employ on average 3 employees on a full-time basis for projects such as multi and single family homes, apartment complexes, duplexes, additions and remodels. I am an equal opportunity employer and currently have 3 employees. I do not charge for estimates or trip charges. I am easy to get a hold of and return calls within 2 to 3 hours or less.

Truss T Built is proud to be a small business; small businesses are what keep the economy fueled. We provide general contracting on residential and light commercial projects. Other services include demolition, window and siding replacement, decks, fences and painting. As owner of this company, I have had training in lead based paint removal and am a lead certified renovator. I have been in this line of work for over 12 years, starting out as a sole proprietor in 2001, with the company name of Straight-Line Construction. My company's annual revenue ranges from $200,000 to $500,000. The average job size (in dollars) ranges anywhere from $2,000 to $30,000. I employ on average 3 employees on a full-time basis for projects such as multi and single family homes, apartment complexes, duplexes, additions and remodels. I am an equal opportunity employer and currently have 3 employees. I do not charge for estimates or trip charges. I am easy to get a hold of and return calls within 2 to 3 hours or less.

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Foundation Repair questions, answered by experts

You can patch minor cracks and damage yourself using concrete fillers or mortar. Larger damage may require full replacement of affected slabs. However, water damage to your concrete will never disappear unless you address the root cause causing the water to cumulate. To prevent future damage, you can also waterproof your concrete.

Yes, it is normal for a block foundation to crack. Some block foundation cracks are more serious than others and indicative of a larger structural problem. On the other hand, minor cracks may not be of immediate concern but should be monitored. Regardless, foundational cracks are not an uncommon response to wear on a structure from time and weather.

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.

New constructions need time to “settle” and sometimes, small hairline cracks occur as a result. Larger horizontal or “stair step” cracks, however, are usually a sign of a deeper, more severe issue. It could indicate an issue with the soil beneath the home, a problem caused by an overgrown tree, or another problem.

Around 25% of homes have foundation problems - it’s a very common issue. Foundation problems can range from very minor to severe and urgent. Call a foundation inspector to determine the severity of any potential issues you identify with your foundation.

The Union Gap, WA homeowners’ guide to foundation repairs

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

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