"},"url":"https://www.angi.com/companylist/us/wa/seattle/best-plumbing-reviews-167764.htm"},"position":5},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Seattle Superior Waterproofing","address":{"@type":"PostalAddress","addressRegion":"WA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Gerald H."},"reviewBody":"Water leaks into my basement during heavy rains. Seattle Superior Waterproofing came out to analyze the situation and give me an number of options for the repair. Service, price, and the options offered all sounded good. I wiil definitely hire them when the work would be less disruptive to my tenants. "},"url":"https://www.angi.com/companylist/us/wa/seattle/seattle-superior-waterproofing-reviews-175880.htm"},"position":6},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Seattle Paint & Design","address":{"@type":"PostalAddress","addressRegion":"WA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Sound R."},"reviewBody":"We had a serious plumbing issue at a house that completely flooded the basement. Rod and his team came to the rescue and replaced the sheetrock, installed new Pergo flooring and linoleum, and repainted the whole basement. After he was finished, the basement looked better than it ever had!"},"url":"https://www.angi.com/companylist/us/wa/arlington/seattle-paint-and-design-reviews-431725.htm"},"position":7},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"PB Construction LLC","address":{"@type":"PostalAddress","addressRegion":"WA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Jenny S."},"reviewBody":"I had the good fortune of coming across PB Construction during my internet research for companies that did basement remodeling. We have a 1940's bungalow with a basement that badly needed help. This was a completely unfinished dark and dingy basement with concrete floor and walls, exposed beams and a maze of nonsensical plumbing, a serious water intrusion problem and broken windows. We had a total of 5 contractors come to do a bid on the job. We were looking to add a bathroom, media/tv room, guest bedroom, designated laundry and workbench space. Tadd was the ONLY one who said he could put in a traditional toilet. Everyone else said our only option was a macerating toilet. Tadd came extremely prepared. He had already done research on the history and layout of the house and had, I guess, the city blueprints of the house. Tadd was incredibly professional and knowledgable about all aspects of the process of this large renovation. He assisted us in the design and layout of the basement in how to best maximize the usability of the space. He designed a walk-in closet for me under the stairs. We had a lot of old but nice wood shelves that were repurposed into built-ins for our tv room. Beyond the basement renovation, PB Construction also redid our driveway, replaced all the electrical throughout the house, added a toilet in our and quot;mother-in-lawand quot; and redid the flooring in our upstairs bathroom. The entire process was very smooth and surprisingly stress free. The project manager Nick and contractor Gregorio were really great to work with. We would definitely work with them again. Their customer service and quality of work is truly grade A. Our basement is now an extremely beautiful living space that is very bright, spacious and inviting. We could not be happier with the end result and are truly glad we chose PB Construction.
"},"url":"https://www.angi.com/companylist/us/wa/seattle/pb-construction-llc-reviews-2344555.htm"},"position":8},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Greenlake Sewer & Drain","address":{"@type":"PostalAddress","addressRegion":"WA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Mackenzie S."},"reviewBody":"Our sewer drain was clogged and causing water to back up into the basement. Brian was able to come out the same day and cleared the drain quickly. "},"url":"https://www.angi.com/companylist/us/wa/mountlake-terrace/greenlake-sewer-and-drain-reviews-2346681.htm"},"position":9},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Habitat Home Energy Specialist","address":{"@type":"PostalAddress","addressRegion":"WA","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Mike D."},"reviewBody":"I am remodeling a basement and wanted an opinion on the best way to heat, cool and insulate the space. Received very good information."},"url":"https://www.angi.com/companylist/us/wa/seattle/habitat-home-energy-specialist-reviews-2318503.htm"},"position":10}]}
Basement Waterproofing reviews from real Angi homeowners in Seattle, WA
We received 3 competitive bids for the project to paint the basement walls in our 1940s home. One basement wall is brick and has peeling paint due moisture from the exterior wall. During the bid, Dennis displayed expertise in describing certain paints that wouldn't necessarily block the...
Richard B.
5.0
03/2014
Basement flooded with fresh water. Leak was in the wall. Turned off entry water and called for emergency service. The fellow that came was on time, professional, found the problem quickly and totally fixed it. Absolutely top rate service..
Gerald H.
5.0
10/2013
Water leaks into my basement during heavy rains. Seattle Superior Waterproofing came out to analyze the situation and give me an number of options for the repair. Service, price, and the options offered all sounded good. I wiil definitely hire them when the work would be less ...
Sound R.
5.0
01/2013
We had a serious plumbing issue at a house that completely flooded the basement. Rod and his team came to the rescue and replaced the sheetrock, installed new Pergo flooring and linoleum, and repainted the whole basement. After he was finished, the basement looked better than it ever had!
Jenny S.
5.0
12/2012
I had the good fortune of coming across PB Construction during my internet research for companies that did basement remodeling. We have a 1940's bungalow with a basement that badly needed help. This was a completely unfinished dark and dingy basement with concrete floor and walls, exposed...
Mackenzie S.
5.0
12/2012
Our sewer drain was clogged and causing water to back up into the basement. Brian was able to come out the same day and cleared the drain quickly.
Mike D.
5.0
11/2011
I am remodeling a basement and wanted an opinion on the best way to heat, cool and insulate the space. Received very good information.
Rain Pros is Puget Sounds premier full-service sprinkler and drainage company, with a reputation of unmatched customer service and exceptional quality. Our professionals have years of experience in drainage and irrigation installation, repair and maintenance. We are very proud to be growing company and leader in each of our fields. For bid requests regarding the installation of a new sprinkler or drainage system please email our general manager ([email protected]). For drainge repair and inspection requests please contact our service coordinator at (253) 678-7111, additionally you can email- [email protected] to immediately cue for with our service department.
"The work was done quickly and efficiently. Communication was very easy, clear, pleasant. The work was very good and I highly recommend them. The clean up wasn't thorough so they sent someone out immediately to finish the job."
Joan G on September 2025
Rain Pros is Puget Sounds premier full-service sprinkler and drainage company, with a reputation of unmatched customer service and exceptional quality. Our professionals have years of experience in drainage and irrigation installation, repair and maintenance. We are very proud to be growing company and leader in each of our fields. For bid requests regarding the installation of a new sprinkler or drainage system please email our general manager ([email protected]). For drainge repair and inspection requests please contact our service coordinator at (253) 678-7111, additionally you can email- [email protected] to immediately cue for with our service department.
"The work was done quickly and efficiently. Communication was very easy, clear, pleasant. The work was very good and I highly recommend them. The clean up wasn't thorough so they sent someone out immediately to finish the job."
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"
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"
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!
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.
"Foundation Repairs - We had dry rotted wooden posts due to concrete pads being buried below the dirt. Wu Construction replaced the posts/ piers and placed new concrete pads on top of the existing to raise them above the dirt. I had some questions and Victor Wu followed up with me. Victor is very professional, honest and fairly priced. I would recommend them to anyone who needed these services as well."
Gail C on October 2018
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.
"Foundation Repairs - We had dry rotted wooden posts due to concrete pads being buried below the dirt. Wu Construction replaced the posts/ piers and placed new concrete pads on top of the existing to raise them above the dirt. I had some questions and Victor Wu followed up with me. Victor is very professional, honest and fairly priced. I would recommend them to anyone who needed these services as well."
Based in the heart of Seattle, we are a trusted masonry repair business dedicated to preserving the structural integrity and aesthetic beauty of your buildings. We specialize in a comprehensive range of services, including brick and stone repointing, facade restoration, lintel replacement, and waterproofing. Our team of skilled and experienced masons utilizes traditional techniques combined with modern materials to deliver lasting results that withstand the city's unique environmental challenges. We understand the specific needs of Manhattan's diverse architecture, from historic brownstones to modern high-rises, and we are committed to providing meticulous craftsmanship, transparent communication, and exceptional customer service on every project. Whether it's a small repair or a large-scale restoration, we are the reliable choice for ensuring your building remains safe, sound, and visually stunning.
Based in the heart of Seattle, we are a trusted masonry repair business dedicated to preserving the structural integrity and aesthetic beauty of your buildings. We specialize in a comprehensive range of services, including brick and stone repointing, facade restoration, lintel replacement, and waterproofing. Our team of skilled and experienced masons utilizes traditional techniques combined with modern materials to deliver lasting results that withstand the city's unique environmental challenges. We understand the specific needs of Manhattan's diverse architecture, from historic brownstones to modern high-rises, and we are committed to providing meticulous craftsmanship, transparent communication, and exceptional customer service on every project. Whether it's a small repair or a large-scale restoration, we are the reliable choice for ensuring your building remains safe, sound, and visually stunning.
"Focused on your Satisfaction"-For over 21 years, Communication and Professionalism have been our top priorities. Consistently working hard to make your remodeling project a pleasant experience.
"Overall a good experience. We hired ACS to take down and rebuild a brick pillar supporting our front porch. Gary's crew was excellent. Although they only spoke Spanish they were helpful and did a good job communicating as much as they could about what they were doing and/or had done. We're very happy with the end product. Gary stayed true to his quote and the contract price. The project was more involved than I expected, but they came through and completed it on budget. My only complaint is that Gary was hard to get a hold of at times."
Stephanie S on August 2021
"Focused on your Satisfaction"-For over 21 years, Communication and Professionalism have been our top priorities. Consistently working hard to make your remodeling project a pleasant experience.
"Overall a good experience. We hired ACS to take down and rebuild a brick pillar supporting our front porch. Gary's crew was excellent. Although they only spoke Spanish they were helpful and did a good job communicating as much as they could about what they were doing and/or had done. We're very happy with the end product. Gary stayed true to his quote and the contract price. The project was more involved than I expected, but they came through and completed it on budget. My only complaint is that Gary was hard to get a hold of at times."
Welcome to your one-stop shop for insulation, rodents and mold! Attic Doctor is a local, licensed contractor providing eco-friendly solutions to all of your attic and crawl space problems. Scratching sounds coming from the attic, when you’re trying to sleep? Mold destroying your roof and air quality? Losing your mind over heating and cooling costs? Call the Attic Doctor!
"Rodent exclusion work - they keep coming back until it’s done!
No other rodent exclusion outfits I had out offered any kind of guarantee. After 6 months I needed them again and they were here in a flash! Amazing customer service. "
Anja C on July 2025
Welcome to your one-stop shop for insulation, rodents and mold! Attic Doctor is a local, licensed contractor providing eco-friendly solutions to all of your attic and crawl space problems. Scratching sounds coming from the attic, when you’re trying to sleep? Mold destroying your roof and air quality? Losing your mind over heating and cooling costs? Call the Attic Doctor!
"Rodent exclusion work - they keep coming back until it’s done!
No other rodent exclusion outfits I had out offered any kind of guarantee. After 6 months I needed them again and they were here in a flash! Amazing customer service. "
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."
We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.
We are a local family-owned business that opened its doors in 2004 with our main goal of providing the best customer experience that we can to every single customer from the smallest to the biggest projects and maintain a long term relationship. We are ONE-STOP-SHOP for ALL Energy Efficiency needs. We are located in Renton, WA and gladly serving over 25 cities in the Washington Puget sound area. Our affordable, licensed, insured, and trained workers are here to help make your home safe, energy-efficient and comfortable. We can do: Energy efficiency upgrades and planning, Attic & Crawl space clean up and decontamination, Attic & Crawl space insulation installation. Vapor & Radiant barriers installation. Air Ducts & Dryer vent cleaning & replacement. HVAC, Ventilation installation and repair. Solar fans. HVAC Lighting installation, Generators, Surge protectors.
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FAQs for basement waterproofing projects in Seattle, 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 $2,500and $5,000 to waterproof, but that price rises significantly for a larger basement.
The Seattle, 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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Foundation draining issues can cause a lot of problems for your house Learn how to spot these drainage problems so you can figure out how best to repair them.
Don't let the rain get you down. Learn about the most popular sump pump backup options to keep your basement from flooding, even when the power goes out.