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Verified Reviews for Basement Waterproofing pros in Granite Falls, WA
*The Angi rating for Basement Waterproofing companies in Granite Falls, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
*The HomeAdvisor rating for Basement Waterproofing companies in Granite Falls, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
Last update on December 16, 2025
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Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
Insulation Co. LLC has been Western Washington’s trusted attic and crawl space specialist since 2008. Based in Seattle, we provide far more than insulation—we offer complete attic and crawl space restoration. Our services include insulation removal and replacement, full cleanouts, mold remediation, duct insulation and sealing, rodent exclusion and proofing, vapor barrier installation, crawl space door upgrades, and comprehensive air sealing. For moisture issues, we also install sump pumps and French drains. We even offer specialized crawl space services for manufactured homes. Whatever your home needs beneath or above, our team ensures a clean, healthy, energy-efficient space built to last.
"Very easy to work with. Crews were efficient, conscientious and polite. They took photos of their work and took the time to explain what they were doing. Overall I was very pleased with the customer service and result."
Eric D on November 2025
Insulation Co. LLC has been Western Washington’s trusted attic and crawl space specialist since 2008. Based in Seattle, we provide far more than insulation—we offer complete attic and crawl space restoration. Our services include insulation removal and replacement, full cleanouts, mold remediation, duct insulation and sealing, rodent exclusion and proofing, vapor barrier installation, crawl space door upgrades, and comprehensive air sealing. For moisture issues, we also install sump pumps and French drains. We even offer specialized crawl space services for manufactured homes. Whatever your home needs beneath or above, our team ensures a clean, healthy, energy-efficient space built to last.
"Very easy to work with. Crews were efficient, conscientious and polite. They took photos of their work and took the time to explain what they were doing. Overall I was very pleased with the customer service and result."
Eric D on November 2025

Wu Construction
Wu Construction
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

Iconiq Construction, LLC
Iconiq Construction, LLC
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!
"I am extremely satisfied with the work completed by Iconiq Construction. Their craftsmanship, communication, and efficiency were impressive. The project turned out even better than I had imagined. Highly recommend their service to everyone."
Michael K on August 2025
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!
"I am extremely satisfied with the work completed by Iconiq Construction. Their craftsmanship, communication, and efficiency were impressive. The project turned out even better than I had imagined. Highly recommend their service to everyone."
Michael K on August 2025

Andy Construction LLC
Andy Construction LLC
We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!
"They did a great job"
Chris D on May 2025
We are not a big company that you have to go through all the phone calls. Owner Andy Zhang will be the one to answer the phone, provide you the bid, and supervise and inspect the work before finish. We are so confident in our work, quality, and over all experience that we don't need any money down. Our customers don't pay us anything until the work is done and customer is happy! For a house on the market, in most cases, we allow owner pay the full bill through escrow at closing. We pride ourselves in treating every customer with honestly.We looking forward to hear and serve you soon!
"They did a great job"
Chris D on May 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

Groundworks
Groundworks
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

Groundworks
Groundworks
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

John's Waterproofing Co.
John's Waterproofing Co.
John's Waterproofing Co. is the premier waterproofing company serving in Oregon and Washington for over 50 years. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!
"John’s was quick to respond and were able to get us on the schedule quickly. They communicated effectively and did quality work. I will work with John’s again."
Matt H on October 2022
John's Waterproofing Co. is the premier waterproofing company serving in Oregon and Washington for over 50 years. We Specialize in Basement and Crawlspace Waterproofing and Repairs, we offer free inspections and estimates along with caring customer service. Contact our office today for your waterproofing needs!
"John’s was quick to respond and were able to get us on the schedule quickly. They communicated effectively and did quality work. I will work with John’s again."
Matt H on October 2022

TotalFix Contractors LLC
TotalFix Contractors LLC
At TotalFix Contractors LLC, we specialize in high-quality fencing, concrete work, foundation repairs, and drainage solutions across the Seattle area. Whether it?s a new installation, repairs, or upgrades, our experienced team delivers reliable results with a focus on durability and customer satisfaction. We serve both residential and commercial clients with honest pricing, fast turnaround, and clean work.
"Had some cracks in my driveway that really needed fixing. These guys did an awesome job?showed up on time, explained everything in a simple way, and got it all done pretty fast. Now the concrete looks brand new. Super easy to work with and they cleaned up nicely too. I?m really happy with how it turned out."
mika a on June 2025
At TotalFix Contractors LLC, we specialize in high-quality fencing, concrete work, foundation repairs, and drainage solutions across the Seattle area. Whether it?s a new installation, repairs, or upgrades, our experienced team delivers reliable results with a focus on durability and customer satisfaction. We serve both residential and commercial clients with honest pricing, fast turnaround, and clean work.
"Had some cracks in my driveway that really needed fixing. These guys did an awesome job?showed up on time, explained everything in a simple way, and got it all done pretty fast. Now the concrete looks brand new. Super easy to work with and they cleaned up nicely too. I?m really happy with how it turned out."
mika a on June 2025

Iron Earth Construction LLC
Iron Earth Construction LLC
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
FAQs for basement waterproofing projects in Granite Falls, WA
Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:
Water in your basement, including damp walls or puddles on the floor
Mold spots in your basement
Musty smells or odors
Warped doors or walls
Cracks in walls
Insect issues, such as cockroaches and termites
You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home.
However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.
Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.
Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.
The Granite Falls, WA homeowners’ guide to basement waterproofing services
From average costs to expert advice, get all the answers you need to get your job done.

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