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TRUSTED BY MERCER ISLAND, WA HOMEOWNERS

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    Average homeowner rating
  • Verified reviews icon123
    Verified foundation repairs reviews

Find Foundation repair specialists in Mercer Island

Avatar for Groundworks

Groundworks

4.44(
162
)
Approved Pro

Groundworks

4.44(
162
)
Approved Pro
Customers say: Super punctual
43 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 TerraFirma Foundation Systems

TerraFirma Foundation Systems

5.00(
10
)
Approved Pro

TerraFirma Foundation Systems

5.00(
10
)
Approved Pro
Customers say: Quick response
93 local quotes requested
20 years of experience

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 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
32 local quotes requested

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 Neet Construction

Neet Construction

No reviews yet

Neet Construction

No reviews yet
2 years of experience

We are a small family owned land clearing, excavation, and remodeling business in Snoqualmie Pass. We have years of experience with excavation, hardscaping, tree work, and small to large remodeling jobs. Let us know how we can help you and bring your vision to life!

We are a small family owned land clearing, excavation, and remodeling business in Snoqualmie Pass. We have years of experience with excavation, hardscaping, tree work, and small to large remodeling jobs. Let us know how we can help you and bring your vision to life!




Avatar for Haupt Excavation

Haupt Excavation

5.00(
6
)

Haupt Excavation

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Haupt Excavation is your go-to Excavating Contractor in Redmond, WA. With over 30 years of experience, they have built a reputation for delivering top-quality work at unbeatable prices. Whether you need a small repair or a large-scale project, Haupt Excavation has the know-how to get the job done right. Their services include a wide range of excavating work, such as foundations, site preparation, underground construction, dump truck hauling, retaining walls, leveling, clearing and demolition. No matter the size of your project, Haupt Excavation is committed to providing you with quality workmanship and competitive rates. If you have a project in mind, don't hesitate to get in touch with Haupt Excavation. They are dedicated to ensuring their clients are completely satisfied with their work. Contact them today to schedule an initial consultation and discuss your excavation needs.

"Great experience working with Haupt excavating. Good communication and work was done on time/as scheduled. We would highly recommend!"

Sarah H on January 2024

Haupt Excavation is your go-to Excavating Contractor in Redmond, WA. With over 30 years of experience, they have built a reputation for delivering top-quality work at unbeatable prices. Whether you need a small repair or a large-scale project, Haupt Excavation has the know-how to get the job done right. Their services include a wide range of excavating work, such as foundations, site preparation, underground construction, dump truck hauling, retaining walls, leveling, clearing and demolition. No matter the size of your project, Haupt Excavation is committed to providing you with quality workmanship and competitive rates. If you have a project in mind, don't hesitate to get in touch with Haupt Excavation. They are dedicated to ensuring their clients are completely satisfied with their work. Contact them today to schedule an initial consultation and discuss your excavation needs.

"Great experience working with Haupt excavating. Good communication and work was done on time/as scheduled. We would highly recommend!"

Sarah H on January 2024


Malau visions llc

No reviews yet

Malau visions llc

No reviews yet

Transforming spaces with precision and beauty, our concrete and landscaping business is your go-to destination for creating stunning outdoor sanctuaries. From expertly crafted driveways and walkways to landscape designs, we bring your visions to life. With our attention to detail and a passion for quality, we build foundations that endure and landscapes that enchant. Experience the artistry of concrete and the allure of nature, all in one exceptional service."

Transforming spaces with precision and beauty, our concrete and landscaping business is your go-to destination for creating stunning outdoor sanctuaries. From expertly crafted driveways and walkways to landscape designs, we bring your visions to life. With our attention to detail and a passion for quality, we build foundations that endure and landscapes that enchant. Experience the artistry of concrete and the allure of nature, all in one exceptional service."


Avatar for Iconiq Construction

Iconiq Construction

No reviews yet

Iconiq Construction

No reviews yet
11 years of experience

We are family owned and operated, with over 25 years of experience in the remodeling industry. We specialize in kitchens, bathrooms, room addition, roofing, painting ,concrete, block walls, drywall, vinyl & hardwood floors, basement remodeling and much more! We also offer complete architectural services for the interior of your home. Whether you are remodeling or building from scratch, we can help. We provide our clients with a one on one experience starting from consultation all the way to final installation. We use only professional grade materials that hold up to everyday use and flex with your homes needs. We understand customer's needs and work according to the customers vision. Our team of professionals provides you with a great service, at an affordable price. It's your home, our job is to make it better!

We are family owned and operated, with over 25 years of experience in the remodeling industry. We specialize in kitchens, bathrooms, room addition, roofing, painting ,concrete, block walls, drywall, vinyl & hardwood floors, basement remodeling and much more! We also offer complete architectural services for the interior of your home. Whether you are remodeling or building from scratch, we can help. We provide our clients with a one on one experience starting from consultation all the way to final installation. We use only professional grade materials that hold up to everyday use and flex with your homes needs. We understand customer's needs and work according to the customers vision. Our team of professionals provides you with a great service, at an affordable price. It's your home, our job is to make it better!

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Foundation Repair questions, answered by experts

Tree roots don’t necessarily break through concrete on their own, but they can certainly take advantage of existing cracks, even very small ones. As roots grow, they expand the cracks, making them larger and leading to serious and costly foundation damage. It’s a good idea to have repairs on any foundation cracks you’re concerned about.

Concrete spalling can be fairly serious, especially if left untreated or in a public area. It can be a tripping hazard and, if not resolved, can lead to structural instability.

If improperly installed, an egress window can compromise your foundation’s structural integrity, so it’s important to work with a pro to ensure your foundation remains in good shape. Any money you may save on a DIY egress window installation may cost you in the long run if your foundation is damaged in the process.

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.

No, house settling is normal as your home’s foundation settles into the soil below and as the framing of your home shifts as it expands and contracts with changes in temperature and moisture. However, if you get to the point where your doors and windows aren’t opening easily, your floors are uneven, or you can visibly see that your roof line is wavy or uneven, you are more likely to have foundation issues.

The Mercer Island, WA homeowners’ guide to foundation repairs

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