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TRUSTED BY SEQUIM, WA HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon11
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Sequim

Avatar for Square 1 Venture Group, LLC
Square 1 Venture Group, LLC
5.0(
72
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sequim, WA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"I hired Jon initially to repair some water damage in the crawl space which affected a couple of the support beams. As he started working on the project he noticed some constraints that required a few adjustments to the original plan. Throughout the process he constantly explained the several available options and what the implications would be of choosing between them. To prevent future damage he also installed a French drain system to prevent water entering in the crawl space. As he was already working in the crawl space, we decided to also reinsulate the crawl space as the existing insulation was fairly old and not up to code. He was very flexibly in terms of timeline and did a great job in installing the insulation. This was a particularly challenging project due to the area size (over 4000sqf) and crawl space geometry. Overall I'm very happy with the work performed by Square 1 Venture group, I highly recommend then and would certainly work with them in the future. Great value and customer service!"
Exterior
Port Ludlow
Encapsulation
Bad Crawl Space
Progress

+1

Response time7 hrs
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for TerraFirma Foundation Systems
TerraFirma Foundation Systems
4.0(
99
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sequim, 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 time40 mins
Response rate98%
92 neighbors recently requested a quote
Avatar for Pinpoint Construction LLC
Pinpoint Construction LLC
5.0(
7
)
Basement Drainage Channels - Install

Serving Sequim, WA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"I had a great experience with this team; they were skilled and professional throughout the excavation and grading process. Their attention to detail and reliable service left me feeling confident and fully satisfied, so I would definitely recommend them to anyone needing quality work and exceptional service."
Gravel driveway
Ruts in the driveway which causing the water to run down the driveway?
Well utility trench
Gravel driveway
Driveway work in North Kitsap

+15

5 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for BUILDING PERFORMANCE PROS LLC
BUILDING PERFORMANCE PROS LLC
3.0(
2
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sequim, 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
12 neighbors recently requested a quote
Avatar for Seattle Tech Home Solutions LLC
Seattle Tech Home Solutions LLC
5.0(
2
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sequim, WA and surrounding areas

Approved

In business since 2016

Free estimates

"I noticed cracks in my walls and uneven floors, so I called Tech Home Solutions. Their experts quickly identified the foundation issue and repaired it efficiently. Excellent customer service and quality workmanship."
13 neighbors recently requested a quote
Avatar for Rain Pros Inc
Rain Pros Inc
4.7(
435
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sequim, WA and surrounding areas

In business since 2006

Free estimates

Warranties offered

"These guys did a great job on the drain cleaning and explaining to me how the drains were connected beneath and outside my home. I felt like the price was quite fair. I had gotten an estimate to re-do a french drain outside my basement after that experience, and I told them I would get back to them in a few months due to cost. It was a good price, but repairs are repairs, and most of them are expensive. I tried getting these guys out again a few months later, but I had a really hard time getting in touch with anyone. I was happy with the work from before, for sure."
Before
Sump Pit with Sump Pump
Downspout coming off of a barn
4-inch PVC installed with the black asphalt emulsion and custom made flashing up.
Excavated

+51

2 neighbors recently requested a quote
Recommended by94%of homeowners
Palm Construction and Remodeling, Inc.
5.0(
118
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sequim, WA and surrounding areas

In business since 2020

Free estimates

Offers commercial services

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

Response time3 days
Palm Construction and Remodeling Inc.
4.2(
88
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sequim, WA and surrounding areas

In business since 2020

Free estimates

Offers commercial services

"If you need reliable contractor, my strong recommendation is Palm Construction. I hired them to build a deck and they did phenomenal job. Ray and his brilliant team made this project simple and non painful. I worked with many contractors and this was my best experience. They also charged at the end very reasonable final price, although quality of materials is superb. I can't recommend enough!"
Response time2 days
Recommended by90%of homeowners
Showing 1-10 of 23
Basement Waterproofing questions, answered by experts

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.

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.

Living in a finished basement is acceptable, but only if the space has the proper points of egress and includes smoke and carbon monoxide (CO) detectors to ensure the safety of the occupants. A good way to ensure your finished basement is suitable for use as living space is to get the basement finishing project properly permitted.

Regular inspections, proper drainage management, and ensuring soil stability help prevent future settlement issues.

The Sequim, WA homeowners’ guide to basement waterproofing services

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