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  • Average homeowner rating star icon4.5
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  • Verified reviews icon113
    Verified foundation repairs reviews

Find Foundation repair specialists in Lynnwood

Avatar for Wu Construction

Wu Construction

4.76(
186
)
Approved Pro

Wu Construction

4.76(
186
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
1983 years of experience

Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.

"Great communication and thorough work. Would hire again."

Brian J on April 2025

Wu Construction Inc, specializes in drainage and foundation systems construction and repair. Since our founding in 1983, we have successfully completed thousands of projects for homeowners and businesses throughout the Northwest. We are the best in our industry, and well regarded by our customers for our excellent service. We are lauded for our speedy responses to inquiries, our efficiency and the quality of our work.

"Great communication and thorough work. Would hire again."

Brian J on April 2025


Avatar for L & L Construction Services Inc

L & L Construction Services Inc

4.65(
108
)
Approved Pro

L & L Construction Services Inc

4.65(
108
)
Approved Pro
Super Service Award
Customers say: Quality work
2003 years of experience
Free onsite estimate

A family run business specializing in custom decks. We are certified installers of low maintenance products such as Azek and TimberTech, and we install natural wood. Our second specialty is kitchen remodeling during the winter months. From 3D design to completion, we have the attention to detail needed for a successful project. Our goal is to understand your project requests so we can assist with design and material options that best meet your needs.

"Ray Long of L and L Construction did an excellent job building a new front porch for our home. He was knowledgeable, professional and patiently answered all of our many questions. He made useful suggestions and when all was said and done we had the porch we wanted and needed. He is professional in every aspect of his work, arriving on time, keeping the work site clean, and finishing within the allotted time. We highly recommend him and, in fact, have already hired him for another project at our house."

Kathy D on August 2025

A family run business specializing in custom decks. We are certified installers of low maintenance products such as Azek and TimberTech, and we install natural wood. Our second specialty is kitchen remodeling during the winter months. From 3D design to completion, we have the attention to detail needed for a successful project. Our goal is to understand your project requests so we can assist with design and material options that best meet your needs.

"Ray Long of L and L Construction did an excellent job building a new front porch for our home. He was knowledgeable, professional and patiently answered all of our many questions. He made useful suggestions and when all was said and done we had the porch we wanted and needed. He is professional in every aspect of his work, arriving on time, keeping the work site clean, and finishing within the allotted time. We highly recommend him and, in fact, have already hired him for another project at our house."

Kathy D on August 2025


"Purchased a 1906 home in North Portland with an uneven foundation that had been patched for 60 years, but needed serious stabilization work. I contacted multiple foundation contractors in the greater-Portland area and Ram Jack was the only team that provided a full worse-case estimate that included everything that I may need to permanently stabilize the home's foundation. Other contractors' estimates were higher, omitted some of the features of Ram Jack's estimate, and involved greater excavation work around the home. While I was collecting estimates, I had multiple contractors check the levels on the house and could see the home was continuing to sink as much as half and inch in some areas within only a few months, so I knew I had to do something soon as the hotter summers are causing significant erosion to the clay soil in north portland. After paying the 50% down payment, I was quickly in touch with multiple project managers and structural engineers who were able to answer my questions as the work plan developed. I work from home and have two cats, so I was a bit worried about the noise and needing to leave at certain times during the work. Ramjack devised a plan of installing 12 helical piers from the basement and 2 outside for a small crawl space area as well as replacing most of the piers in the basement that had water damage. During the excavation and pier installation, I didn't have to leave my house at all, my cats were fine, none of the utilities ever needed to be turned off and none of the neighbors said they heard more than the hum of the generator outside; insane professionalism. The work team kept me informed at every step of the excavation and pier installation and was able to recover an inch of lift with only a few drywall cracks that I patched in a day. I could have gone further, but wanted to avoid any potential damage to the sewer pipes and stay within my budget. During the lifting, I was standing with the lead construction manager who kept me informed of every risk as we lifted the house bit by bit. During the excavation my basement looked insane with mounds of dirt everywhere, but the construction team cleaned everything flawlessly; all I had to do was a quick mop and the basement was good as new again. Overall had a great experience with RamJack; the 20 years in business shows, most everyone I dealt with had been working with them for years; the construction manager had been doing pier installation for 15 years. The work was expensive, but cheaper than the other local contractors, and certainly way cheaper than replacing the entire basement foundation. Ramjack was even able to take a few grand off the intitial worse-case estimate for solutions not needed. Glad I was able to repair my 120 year old home; here's to another 100 years. Big thanks to Pancho and Stephen, as well as the structural engineers and project managers; I'm very happy with the work."

Kevin S on March 2022

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.

"Purchased a 1906 home in North Portland with an uneven foundation that had been patched for 60 years, but needed serious stabilization work. I contacted multiple foundation contractors in the greater-Portland area and Ram Jack was the only team that provided a full worse-case estimate that included everything that I may need to permanently stabilize the home's foundation. Other contractors' estimates were higher, omitted some of the features of Ram Jack's estimate, and involved greater excavation work around the home. While I was collecting estimates, I had multiple contractors check the levels on the house and could see the home was continuing to sink as much as half and inch in some areas within only a few months, so I knew I had to do something soon as the hotter summers are causing significant erosion to the clay soil in north portland. After paying the 50% down payment, I was quickly in touch with multiple project managers and structural engineers who were able to answer my questions as the work plan developed. I work from home and have two cats, so I was a bit worried about the noise and needing to leave at certain times during the work. Ramjack devised a plan of installing 12 helical piers from the basement and 2 outside for a small crawl space area as well as replacing most of the piers in the basement that had water damage. During the excavation and pier installation, I didn't have to leave my house at all, my cats were fine, none of the utilities ever needed to be turned off and none of the neighbors said they heard more than the hum of the generator outside; insane professionalism. The work team kept me informed at every step of the excavation and pier installation and was able to recover an inch of lift with only a few drywall cracks that I patched in a day. I could have gone further, but wanted to avoid any potential damage to the sewer pipes and stay within my budget. During the lifting, I was standing with the lead construction manager who kept me informed of every risk as we lifted the house bit by bit. During the excavation my basement looked insane with mounds of dirt everywhere, but the construction team cleaned everything flawlessly; all I had to do was a quick mop and the basement was good as new again. Overall had a great experience with RamJack; the 20 years in business shows, most everyone I dealt with had been working with them for years; the construction manager had been doing pier installation for 15 years. The work was expensive, but cheaper than the other local contractors, and certainly way cheaper than replacing the entire basement foundation. Ramjack was even able to take a few grand off the intitial worse-case estimate for solutions not needed. Glad I was able to repair my 120 year old home; here's to another 100 years. Big thanks to Pancho and Stephen, as well as the structural engineers and project managers; I'm very happy with the work."

Kevin S on March 2022


"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
1997 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

4.90(
21
)
Approved Pro

Groundworks

4.90(
21
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
2006 years of experience

Since 1987, Groundworks has specialized in helping homeowners with their foundation repair, waterproofing, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across North-West Washington. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your basement, foundation, or crawl space. GROUN**76305

"Excellent work by Wyatt, Tucker,Zane and Oliver. Finished a day ahead of schedule. Great communication and explanation of required work. Left with everything cleaned up as if they were never here."

William P on August 2025

Since 1987, Groundworks has specialized in helping homeowners with their foundation repair, waterproofing, and concrete needs. Our top priority is providing high-quality home repair solutions and personalized service across North-West Washington. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your basement, foundation, or crawl space. GROUN**76305

"Excellent work by Wyatt, Tucker,Zane and Oliver. Finished a day ahead of schedule. Great communication and explanation of required work. Left with everything cleaned up as if they were never here."

William P on August 2025


Avatar for Supreme Home Improvements

Supreme Home Improvements

4.92(
13
)
Approved Pro

Supreme Home Improvements

4.92(
13
)
Approved Pro
Super Service Award
2000 years of experience
Free onsite estimate

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"We had a lot of crumbling mortar in our basement walls and were worried about water getting in. Pro Mass Foundation and Masonry came in and did a fantastic job repointing everything. The guys were friendly, showed up on time, and kept us updated as they worked. Our basement looks solid now and we feel much more secure."

Arnob D on October 2025

We’re a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"We had a lot of crumbling mortar in our basement walls and were worried about water getting in. Pro Mass Foundation and Masonry came in and did a fantastic job repointing everything. The guys were friendly, showed up on time, and kept us updated as they worked. Our basement looks solid now and we feel much more secure."

Arnob D on October 2025


Avatar for Groundworks

Groundworks

4.72(
16
)
Approved Pro

Groundworks

4.72(
16
)
Approved Pro
Super Service Award
Customers say: True professional
2006 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 northwest Washington area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.

"We're so impressed with this company and its technicians! Joe Jimenez was polite, professional, well-spoken and friendly. He explained everything beautifully and we were happy to have him in our home. "

Barbara E on October 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 northwest Washington area. With fully trained technicians, industry-leading products, and nationally backed warranties, Groundworks is here to restore your foundation.

"We're so impressed with this company and its technicians! Joe Jimenez was polite, professional, well-spoken and friendly. He explained everything beautifully and we were happy to have him in our home. "

Barbara E on October 2025


Avatar for Iron Earth Construction LLC

Iron Earth Construction LLC

5.00(
3
)
Approved Pro

Iron Earth Construction LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2021 years of experience

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our

"Very accommodating and great service and product"

sally k on September 2023

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our

"Very accommodating and great service and product"

sally k on September 2023


Avatar for Ram Jack West

Ram Jack West

4.25(
6
)
Approved Pro

Ram Jack West

4.25(
6
)
Approved Pro
Customers say: Terrific value
2001 years of experience
Free onsite estimate

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

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Foundation Repair questions, answered by experts

Not all cracks in the basement floor signal foundation problems. As the house settles, you’ll notice very thin hairline cracks, which you don’t need to worry about. Cracks that are 1/8 inch or wider should require sealing, while ones that are 1/2 inch or wider require leveling. However, if you have cracks in your basement floor with heaving, you should call a pro to assess the situation. Heaving can lead to uneven flooring, structural issues, and foundation problems.

The most expensive foundation repair method is to install helical piers. Helical piers are a type of steel pier used to support sinking foundations in areas with poor soil conditions or deep bedrock. This foundation repair method can cost up to $3,000 per pier, including labor, because of its material and labor-intensive installation process. Total foundation repair costs can easily reach over $20,000 using this method.

Violating building codes can lead to a number of consequences, including fines, citations, and even being required to demolish the structure and start over. If your house isn’t compliant with code requirements, you can also run into trouble when it comes time to get homeowners insurance or sell your house. Following all applicable building codes will avert costly consequences.

Periodic inspections and addressing drainage issues prevent further damage.

Concrete can crack from general wear, improper installation, or in response to uneven support from the soil underneath. Small, thin cracks on the surface of aging concrete are usually a result of normal wear and tear, while cracks on new concrete more likely indicate a problem with installation. Larger cracks or uneven steps can signify a much more severe issue. A concrete contractor should be able to diagnose the cause and repair concrete cracks for you.

The Lynnwood, WA homeowners’ guide to foundation repairs

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