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Verified Reviews for Basement Waterproofing pros in Stevenson, WA
*The Angi rating for Basement Waterproofing companies in Stevenson, 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 Stevenson, 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 November 12, 2025
Find Basement waterproofing pros in Stevenson

TerraFirma Foundation Systems
TerraFirma Foundation Systems
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

TerraFirma Foundation Systems
TerraFirma Foundation Systems
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.
"Very professional staff, and polite. Quality work, and annual inspections ensuring everything is as it should be. We highly recommend this company."
Michael L on November 2025
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.
"Very professional staff, and polite. Quality work, and annual inspections ensuring everything is as it should be. We highly recommend this company."
Michael L on November 2025

John's Waterproofing
John's Waterproofing
Since 1974, John's Waterproofing has been helping the PNW have dry and healthy homes. We specialize in below-grade waterproofing for crawlspaces and basements. In addition to this we also provide radon testing and mitigation, and humidity and mold control. We are proud to offer the best in the industry solutions to your homes waterproofing needs. Cost is determined by the job. CCB#15830 (503) 873-5650 [email protected]
"Chris and Joel were great, they were in and out and our water heater was rewired and sump pump wired in no time at all."
Dawn S on May 2025
Since 1974, John's Waterproofing has been helping the PNW have dry and healthy homes. We specialize in below-grade waterproofing for crawlspaces and basements. In addition to this we also provide radon testing and mitigation, and humidity and mold control. We are proud to offer the best in the industry solutions to your homes waterproofing needs. Cost is determined by the job. CCB#15830 (503) 873-5650 [email protected]
"Chris and Joel were great, they were in and out and our water heater was rewired and sump pump wired in no time at all."
Dawn S on May 2025

Upfront Construction LLC
Upfront Construction LLC
Upfront Construction LLC is a family owned and operated and is fully licensed, bonded and insured. Our business has shown to be choice worthy of becoming a go-to source for various interior and exterior residential maintenance. We are consistently striving to make the best experience in any given task. No task is to small whether it be a repair or total remodel. We specialize in basement and crawl space waterproofing. We offer free estimates!!
"This company was on top of getting the work done, provided clear estimates, and followed through with the repairs described. It was a multi-layered project that could have been confusing to track, but they made it easy."
Stephen A on October 2024
Upfront Construction LLC is a family owned and operated and is fully licensed, bonded and insured. Our business has shown to be choice worthy of becoming a go-to source for various interior and exterior residential maintenance. We are consistently striving to make the best experience in any given task. No task is to small whether it be a repair or total remodel. We specialize in basement and crawl space waterproofing. We offer free estimates!!
"This company was on top of getting the work done, provided clear estimates, and followed through with the repairs described. It was a multi-layered project that could have been confusing to track, but they made it easy."
Stephen A on October 2024

Advanta Construction
Advanta Construction
Advanta Construction is an expanding company servicing the greater New York area. We are experienced in both commercial and residential projects. Our organization consists of our coordinated, client oriented office team and our crew of skilled craftsmen well practiced in many trades; including carpentry, plumbing, waterproofing, painting, and much more. Such a vast team allows us to provide for all of your construction needs.
Advanta Construction is an expanding company servicing the greater New York area. We are experienced in both commercial and residential projects. Our organization consists of our coordinated, client oriented office team and our crew of skilled craftsmen well practiced in many trades; including carpentry, plumbing, waterproofing, painting, and much more. Such a vast team allows us to provide for all of your construction needs.
Santini General Contractings LLC
Santini General Contractings LLC
tony santini, Larry santini. jj santini. Carlos santini four brothers with over 25 plus years of expertise. Our goal then and now is to provide quality on time projects.We let our quality work and commitment to customer satisfaction be our slogan.
tony santini, Larry santini. jj santini. Carlos santini four brothers with over 25 plus years of expertise. Our goal then and now is to provide quality on time projects.We let our quality work and commitment to customer satisfaction be our slogan.
Bernard Commercial Inc.
Bernard Commercial Inc.
We are a full service general contractor with two crews that do as much work in house as possible. We work with customers to achieve their goals. All our pricing is up front and open. We don't do upfront billing, 30-50 percent down or deposits. You only pay for work that is completed, materials that have arrived at your location or special orders. Being professional about the job site conditions, billing and close out are major factors we strive towards.
We are a full service general contractor with two crews that do as much work in house as possible. We work with customers to achieve their goals. All our pricing is up front and open. We don't do upfront billing, 30-50 percent down or deposits. You only pay for work that is completed, materials that have arrived at your location or special orders. Being professional about the job site conditions, billing and close out are major factors we strive towards.
Tick Klock Drug
Tick Klock Drug
Family owned drug store in an historic building. Retail gifts, HallMark cards, candy, toys and apparel are just a few things we offer. -Convenience and availability -Credibility and experience -Reliability -Services, Products, Brands -Affordable price/payment options Prescriptions, over the counter, medical supplies, pick up, delivery and mail orders are available. We like to make it easy for you.
Family owned drug store in an historic building. Retail gifts, HallMark cards, candy, toys and apparel are just a few things we offer. -Convenience and availability -Credibility and experience -Reliability -Services, Products, Brands -Affordable price/payment options Prescriptions, over the counter, medical supplies, pick up, delivery and mail orders are available. We like to make it easy for you.

Drainage Masters LLC
Drainage Masters LLC
Proudly serving the Pacific Northwest since 1996, Drainage Masters is not just a family-owned business, but also deeply committed to our local communities. Our services encompass a wide range of solutions tailored to meet your specific needs. From layered yard systems designed to promote healthier, well-draining lawns to the installation of French drains for tackling wet yards, we've got you covered. Additionally, we specialize in crawl space and basement drainage systems to effectively remove water from these areas, ensuring optimal conditions for your property. Whether it's repairing or unclogging roof drains, rerouting them to more suitable destinations like dry wells, installing channel drains, or addressing any other drainage challenges, we have the expertise and resources to get the job done right. We stand behind every job we do with a comprehensive warranty and offer complimentary estimates for all your drainage or sewer requirements.
"Our basement flooded in January 2021. Drainage Master was one of 3 estimates we obtained. Seth inspected the situation and suggested and exterior drainage system The our two estimates we for interior systems with a sump pump. The other two companies would not provide an estimate for and exterior system. Also the estimate did not include the cost to repair damage the installation of an interior system would do to a finished basement. The crew was great the foreman answered all of our questions the job was done on time and in budget. I would highly recommend them."
George W on June 2021
Proudly serving the Pacific Northwest since 1996, Drainage Masters is not just a family-owned business, but also deeply committed to our local communities. Our services encompass a wide range of solutions tailored to meet your specific needs. From layered yard systems designed to promote healthier, well-draining lawns to the installation of French drains for tackling wet yards, we've got you covered. Additionally, we specialize in crawl space and basement drainage systems to effectively remove water from these areas, ensuring optimal conditions for your property. Whether it's repairing or unclogging roof drains, rerouting them to more suitable destinations like dry wells, installing channel drains, or addressing any other drainage challenges, we have the expertise and resources to get the job done right. We stand behind every job we do with a comprehensive warranty and offer complimentary estimates for all your drainage or sewer requirements.
"Our basement flooded in January 2021. Drainage Master was one of 3 estimates we obtained. Seth inspected the situation and suggested and exterior drainage system The our two estimates we for interior systems with a sump pump. The other two companies would not provide an estimate for and exterior system. Also the estimate did not include the cost to repair damage the installation of an interior system would do to a finished basement. The crew was great the foreman answered all of our questions the job was done on time and in budget. I would highly recommend them."
George W on June 2021
The Stevenson, WA homeowners’ guide to basement waterproofing services
From average costs to expert advice, get all the answers you need to get your job done.

Crawl space repair costs can seem intimidating, but putting them off can lead to bigger issues. Learn about repair costs in this guide to set your budget.

Sump pump replacement costs depend on the type of unit you have and the cost of labor, which varies by region. Read on to find out more about what to expect.

Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.

Dealing with a damp crawl space? Use these eight simple tips to get rid of the moisture and water-related problems once and for all.
If you notice signs of your foundation failing, don’t delay calling a pro. Here are just a few reasons why getting foundation repairs ASAP is so important.

Crawl space encapsulation can make a big difference if you’re experiencing issues with mold, mildew, and pests. Here’s what you need to know.
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