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Best basement waterproofing pros near Graham, WA

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TRUSTED BY GRAHAM, WA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon20
    Verified basement waterproofing services reviews

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

Avatar for TerraFirma
TerraFirma
4.0(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - RepairBasement Drainage Channels - Install

Serving Graham, WA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"Had huge foundation problems at a project of mine on the waterfront. We used terrafirma to both waterproof the entire basement AND lift the foundation. 10/10 would recommend. extremely communicative, very knowledgeable, and even brought a crew in from Oregon to help us stay on schedule. Oscar and jorge got the job done extremely quickly and Seth was fantastic as my project manager."
A System Design Specialist helping a homeowner
Encapsulating a crawl space
Fleet of vehicles in our Portland, Oregon locatio
Loading up our truck for a piering job
Loading up a truck for a waterproofing job

+33

Response time2 hrs
Response rate100%
89 neighbors recently requested a quote
Avatar for Serge's Home Imprvmnt & Rnvtn
Serge's Home Imprvmnt & Rnvtn
5.0(
40
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Graham, WA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Serge did much more than flooring; he also installed electrical (lighting/ceiling fan & outlets) , bathroom vanities and enclosed an indoor storage area with custom doors. He is fair and an excellent worker. We especially appreciate his prompt communication. That work was done summer/fall 2022. Heâ s back now (summer 2023) for more home improvements."
Siding repair
Siding repair
Siding repair
Siding repair
Fence repair/build

+49

Response time1 day
19 neighbors recently requested a quote
Recommended by80%of homeowners
Near Me Roofing Company
5.0(
74
)
Basement Drainage Channels - Repair

Serving Graham, WA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"We had Near Me Roofing Company re-shingle my 2 story house. The crew was professional , clean and on time. On our first day, it started to rain and they were happy to re-schedule to another day of the week. We were very satisfied with the finished product and would recommend them."
Response time4 days
Recommended by80%of homeowners
Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.6(
1,466
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Graham, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Emergency services offered

Warranties offered

"This company is so professional and kind. Anthony, the rep who came to do the estimate on a basement kitchen sink and shower installation was so knowledgeable. and patient, My elderly mother has moved in and is making our finished basement her new home, he addressed all her concerns and helped to make some smart choices. Lexi, the phone coordinator was lovely as well."
Prep Area
Waterfall Finished!
Excavation jobs and more!
 install grease trap for commercial kitchen
Delivery of Shoring

+334

42 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for BUILDING PERFORMANCE PROS LLC
BUILDING PERFORMANCE PROS LLC
4.5(
8
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Graham, WA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"The workers were on time. Very efficient. They did a blower door test and found the air leaks and insulated these areas. Blew installation above the garage, cleaned out the crawl space and put new installation there and basement. Found a water leak from my toilet,Thank goodness. Covered everything in the basement and swept and cleaned up after. I would recommend them!"
Response time2 days
6 neighbors recently requested a quote
Avatar for Diversified Crawlspace Servs
Diversified Crawlspace Servs
3.9(
25
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Graham, WA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"We had a foot of water in our crawl space after the snow and 6 in. of rain from the December 2021 storms. I had called several companies to come out to take a look and give quotes. Ethan from diversified was the 3rd quote we received. Ethan explained the issue, explained what they would do to remedy it, and answered all my questions. He sent me the quote which was very resonable. BE SURE TO GET SEVERAL QUOTES. ONE COMPANY QUOTED US DOUBLE OF WHAT WE PAID DIVERSIFIED. They were able to get a team out two days later. The team was on time, professional, and did really good work. We ended up needing a sump pump due to ground water coming up. They applied a mold application and completed the work in a day. I highly recommend these guys and did my research prior to having them do the work. I am very impressed and happy we chose them."
crawlspace drainage
crawlspace drainage
crawlspace drainage
crawlspace drainage
crawlspace drainage

+18

6 neighbors recently requested a quote
Recommended by60%of homeowners
Avatar for Zoom Drain of Washington
Zoom Drain of Washington
5.0(
5
)
Basement Drainage Channels - Repair

Serving Graham, WA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Great company, called about a backed up toilet. They were able to come out first thing the following morning. Jordan and Jeremy showed up in the freezing cold and cleared the clog on the drain line very quickly. They also took extra time to scope and jet the line and found a busted pipe and extensive roots in the lines as well. They got everything cleaned out very quickly and left me with a product to help keep the roots away till we can get the pipe fixed and possibly get a liner installed in the future. I would recommend Zoom drain as they were fast, professional and reasonably priced. Thank you for great service."
Camera Inspection, Push Rod
Camera Inspection
Super service truck
Dedicated Jetter
Professional Technicians

+15

5 neighbors recently requested a quote
Recommended by60%of homeowners
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Basement Waterproofing FAQs, answered by experts

Since basements are prone to water and moisture issues and the resulting problems can be expensive to repair and potentially damaging to your home, basement waterproofing is almost always worthwhile. Even for homes that haven’t experienced water infiltration, waterproofing the basement is insurance against facing expensive repair bills in the future. All basements will leak at some point, so fixing drainage issues and taking steps to prevent moisture and water infiltration is wise.

Venting the crawl space can be a good alternative to encapsulation if you live in a dry climate and the moisture problem isn’t severe. You could also try a dehumidifier or install a vapor barrier on the floor, leaving the walls exposed. A new drainage system may eliminate the moisture problem if it is not caused by humidity.

Although the two terms are closely related and often used interchangeably, pier and beam foundations and crawl spaces are different things. A pier and beam foundation is made up of concrete piers and wooden beams and creates a space under the home known as a crawl space. There are several types of foundations that create crawl spaces, often collectively known as “crawl space foundations,” but the crawl space itself is separate from the foundation. 

To maintain an outdoor structure, perform regular inspections for damage, leaks, and weak joints. Clean the structure regularly, treat or repaint wood surfaces for weather resistance, and reinforce any weak joints to prevent deterioration and ensure its longevity.

A sewage smell in your crawl space is usually from a damaged or clogged pipe leaking sewer gasses or actual sewage underneath your home, but there are some other common causes. Moisture, from poor or damaged encapsulation or a malfunctioning sump pump, can harbor mold and bacteria, causing a musty smell. Pests can also get stuck in your crawl space and die, which causes a sewage-like odor.

The Graham, WA homeowners’ guide to basement waterproofing services

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