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Best basement waterproofing pros near Sumas, WA

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Top-Rated Basement waterproofing pros in Sumas - Updated Nov 2026

Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.2(
72
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sumas, WA and surrounding areas

Approved (Corporate)

In business since 1974

Free estimates

Warranties offered

"Corey and David of John's Waterproofing Company took our project and had a commercial grade gas water heater installed and running in place of our old one the same day they received our call for service. Thank you John's Waterproofing."
New Home Encapsulation
SilverGlo Insulation
CleanSpace
SaniDry Dehumidifier
Puddling in Basement

+7

Response time11 hrs
Response rate94%
30 neighbors recently requested a quote
Near Me Roofing Company
5.0(
74
)
Basement Drainage Channels - Repair

Serving Sumas, WA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Couldn't be more pleased with the roof restore that Ari and Elijah did. was courteous and his workmanship is great. very responsive and kept us in the loop. kept us updated, gave comprehensive information prior to the work and the elevated pictures they took afterwards was a nice surprise."
Response time4 days
Recommended by80%of homeowners
Avatar for MTU Services LLC
MTU Services LLC
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sumas, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"We’ve had a lot of crews in our home for various projects over the years, and I have to say this was one of the most courteous. They worked hard, navigating through our kitchen to access the basement and I really appreciated their efforts. Thank you MTU, we now have safe walls in our cellar and fresh beams to keep the house standing ;)"
Elevator pit waterproofing and sealing
Piers under an existing home
Piers under an existing homes middle wall
Solutions/Answers
Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for LaVergne Plumbing & Heating
LaVergne Plumbing & Heating
4.5(
11
)
Basement Drainage Channels - Repair

Serving Sumas, WA and surrounding areas

Approved

In business since 1951

Emergency services offered

Warranties offered

"Impressively quick service. Cody was very professional, responsive, and friendly. He explained the process, issue, and resolution. Very happy with this plumber and company."
Well Pump Equip
Frank
Well Pump Truck
Well Pump Service
Meet Frank!

+13

Response time6 hrs
Response rate100%
73 neighbors recently requested a quote
Avatar for American Concrete N Masonary
American Concrete N Masonary
5.0(
6
)
Basement Drainage Channels - Install

Serving Sumas, WA and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"We had a huge job in our yard that included several aspects of technical work: walls, leveling, patio floors, drainage, irrigation, lighting, conduits, and more. We were very happy with the overall process of getting it done, efficiency of work, and communication. The finished patio looks great!"
Additional Photos
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+29

Recommended by100%of homeowners
Form To Function Landscaping LLC
4.4(
16
)
Basement Drainage Channels - Install

Serving Sumas, WA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"I kind of questioned the cost after they did the job. What they actually did here looks pretty good. I just had surgery that time so I was in bed when they came out. They did it under 40 hours and did good work but they handed me another bill that was triple the price. The labor was okay but within that labor, they planted things for me. I had asked them to make it easy to maintain but they never discussed anything with me. I’m sure they upped the cost for the plants quite a bit. I don’t even know what plants they are. They did put in some bricks and they did a good job on that. I told them that I wanted some grooves leveled out in my yard and I realized afterwards that there were still some tracks in the yard. It was covered by grass but I pointed out where they were."
Additional Photos
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Arlington
Camano Island
Bothell

+25

Recommended by86%of homeowners
Avatar for Aqueous Solutions Inc
Aqueous Solutions Inc
3.2(
20
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sumas, WA and surrounding areas

In business since 2002

Free estimates

Credit card accepted

"Between scheduling the appointment and the actual home visit, we received a full-color book in the mail, which was interesting and
impressive.
Both on the phone and at our home, they seemed very capable and professional, but it turned out that their area of expertise
was not in external foundation repair. They seemed to focus on internal foundation repair and basement waterproofing, which wasn't what we needed.
In the event that we require services that they provide, we would call them again.
"
Recommended by87%of homeowners
Showing 1-10 of 17
Basement Waterproofing FAQs, answered by experts

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.

Yes, professional installers use weather-resistant materials to protect the dish and cabling from environmental damage.

Crawl space foundation problems can stem from a few different issues, but the most common are moisture and water problems and soil instability. Moisture and water issues are often a result of poor drainage, which can lead to water intrusion and soil expansion and contraction, leaving your foundation under added stress. A few things can cause soil instability, including poor drainage, karst landscapes and resulting sinkholes, and poorly compacted soil during construction.

A vapor barrier keeps moisture out of the crawl space, while insulation reduces the amount of unconditioned air—and sometimes moisture—that enters the space. Coupling a vapor barrier with insulation can help prevent humidity and related moisture damage in a crawl space while also making your home more energy-efficient. Just be sure to use insulation that won’t get damaged from moisture, like rigid foam board or expanding spray foam insulation.

Yes, it is generally unhealthy and can be dangerous to live in a damp basement. The damp air can negatively affect your breathing and lungs, and the moisture promotes mold growth and pest infestations. Inhaling mold spores or waste particles from insects and rodents attracted to the moisture can be hazardous. This damp, moldy air can also circulate into your main living area. It is crucial to resolve any moisture problems and implement preventative measures before using your basement as a living space.

The Sumas, WA homeowners’ guide to basement waterproofing services

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