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Find Basement drainage channels installers in Mercer Island

Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,338
)

Serving Mercer Island, WA and surrounding areas

Approved (Corporate)

In business since 2013

Emergency services offered

Warranties offered

"All dealings with this company exceeded my expectations from the professionalism of the estimator and installation crew to the communications from the office. Each visit was preceded by a reminder email complete with pictures of who to expect. The installation itself took all day and the crew did an excellent job of completing the panel move from the main floor to the basement. They cleaned up all their work areas and took time to walk us through all the changes and the upcoming inspection process."
Generator Repair
Additional Photos
Additional Photos
Electrical Panel Repair
Additional Photos

+44

94 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Wu Construction
Wu Construction
4.8(
186
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"Our experience with Wu Construction was awesome. We had water coming into our basement, gave them a call, and from consultation through installation, they were one of the most courteous and professional contractors we've dealt with. Their work is quality, prices competitive, and communication was excellent. Would recommend them to anyone with water issues."
Additional Photos
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+11

Response time4 hrs
25 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.7(
866
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2013

Emergency services offered

Warranties offered

"Super friendly, knowledgeable and honest. They came to check out what we thought was a broken sump pump but they got it to work and gave me a ton of advice on additional drainage needs. Highly recommend!"
Before the Extension
After Extension
8 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Harts Plumbers, Electricians, & HVAC Technicians
Harts Plumbers, Electricians, & HVAC Technicians
4.7(
1,010
)

Serving Mercer Island, 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."
Pipe llining
Pipe relining
Pipe relining
Camera inspections
Response time50 mins
Response rate100%
93 neighbors recently requested a quote
Avatar for Andy Construction LLC
Andy Construction LLC
5.0(
21
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"Outstanding work and value. Andy was quick to respond and came out the next day to assess what we needed to do to improve the drainage in our crawlspace. The home is built on a sloped lot. Andy suggested a full perimeter drain install around the foundation. The work also included complete replacement of the vapor barrier. All work was performed efficiently and Andy backed it up with a lifetime warranty. I couldn't be happier with the end result and would highly recommend Andy and his crew."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time7 hrs
1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Groundworks
Groundworks
4.6(
247
)

Serving Mercer Island, WA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Emergency services offered

"Gardner came to do an inspection of my basement and provide a quote. I had received other quotes that only provided for a single sump pump install at outrageous prices. He was very thorough, took two hours to measure, inspect, provided videos and explanations on everything, and the quote was shockingly affordable with so much more work I was ecstatic! I am getting a three sump pump with back up battery, and so much more for basically what the others quoted. And, to have the option to finance through Greensky was the cherry on top! If you are in King County, ask for Gardner @ GROUNDWORKS - you won’t regret it!"
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time2 days
156 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for South West Plumbing & Waterheaters, LLC
South West Plumbing & Waterheaters, LLC
3.7(
334
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 1980

Emergency services offered

Warranties offered

"Broker wanted me to get inspection. Was not able to contact the original installer, so my broker recommended Southwest Plumbing. First appointment no show service man got into a job that occupied his whole day. Second appointment missed because service man sick. Finally showed up for third appointment. Congenial and wore mask when he arrived. Said it would be $550 for the inspection. It took fifteen minutes. No parts or anything. Just labor. Easy access. The service person came back upstairs wearing the mask to only cover his mouth, not his nose."
Response time11 hrs
38 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Premier Landscape Construction, LLC
Premier Landscape Construction, LLC
5.0(
7
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"We hired Premier Landscape Construction for a waterfront retaining wall at our property in Des Moines, Washington and the experience was outstanding. Their team was incredibly knowledgeable about shoreline construction and drainage, and they built a beautiful, solid retaining wall that completely transformed our waterfront. The craftsmanship and attention to detail were impressive, and they kept everything clean and organized throughout the project. If you?re looking for a reliable contractor for retaining walls or landscape construction in Des Moines, WA, I highly recommend Premier Landscape Construction."
Kirkland Landscape
Our Photos
Our Photos
Our Photos
Our Photos

+80

Response time4 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for Brewer's Sewer Repair LLC
Brewer's Sewer Repair LLC
5.0(
6
)

Serving Mercer Island, WA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"I had an amazing experience with the crew at Brewer Sewer! The office was quick in getting me scheduled for a free estimate where the project manager came out and gave us an estimate and took the time to explain what was going on. The crew that came out for repair were friendly, professional and knowledgeable. I recommend them to anyone with a sewer issue. "
sewer repair
27 neighbors recently requested a quote
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Showing 1-10 of 511
FAQs for basement drainage channels installation projects in Mercer Island, WA

Expect a well-built French drain to last 30 to 40 years. By channeling both surface- and ground-water away from your foundation, the system relieves hydrostatic pressure and helps prevent costly structural damage. Choose a pipe with a quality cloth filter to keep sediment out and extend the drain’s life. A quick annual inspection and routine cleanouts will keep water flowing freely, ensuring the system continues to protect your home for years to come.

Most French drains sit two feet below grade, but depth ultimately depends on the problem you’re solving. For puddling rainwater or snowmelt, a shallow curtain drain at lawn level often does the trick. To handle rising groundwater, pros dig deeper, down to the footing, and run the pipe beneath the basement slab. A drainage contractor will determine the optimal depth for your specific soil conditions and water issues.

A properly installed interior French drain captures water at the slab, channels it to a sump pit, and directs it safely outside, preventing basement floods before they occur. Because the pipe sits just under the floor edge, a plumber can reach it easily for cleaning or repairs. Pairing the drain with a reliable sump pump gives you the best long-term protection.

Hire a contractor who installs drainage systems every day—typically a foundation specialist, drainage contractor, experienced landscaper, or plumber with waterproofing experience. These pros understand slope, soil, and local codes, and they have the equipment to trench safely around utilities. Ask for references and photos of recent jobs to be sure they can design a system that keeps water off your foundation for decades.

Once the drain is in, patch the yard by reseeding bare spots or replacing plants the crew removed. Inside, look for ways to add value—finishing the basement or upgrading interior waterproofing while the space is open often costs less now than later. Schedule a quick annual checkup to flush sediment and confirm the pipe and sump pump are clear. Consistent maintenance ensures the drain functions properly and protects your investment.

Most policies don’t cover the cost of repairing a French drain itself, but they may provide coverage for water damage if the system fails. Coverage varies by insurer, so be sure to read the fine print or contact your agent before any issues arise. If you live in a high-risk flood zone, consider a separate flood policy to close the gap. Knowing your coverage in advance helps you budget for repairs and avoid unexpected costs.

The Mercer Island, WA homeowners’ guide to basement drainage channels installations

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