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Find Sump pump or interior foundation drains installers in Seattle

Avatar for Seatown Electric Plumbing Heating & Air
Seatown Electric Plumbing Heating & Air
4.8(
1,392
)

Serving Seattle, WA and surrounding areas

Approved (Corporate)

In business since 2013

Emergency services offered

Warranties offered

"I had my sump pump replaced. Blaine explained all my options. I decided to have him replace the pump, install a deeper pit, replace and pipe the discharge line and tie it into my gutter downspout. He and his co-worker arrived right on time. They were friendly, polite and made sure to explain all the work that they were doing. He made sure that the pump operation could not be heard from inside the house. I highly recommend Seatown and plumber Blaine in particular"
Generator Repair
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Electrical Panel Repair
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+44

93 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Knockout Plumbing & Mechanical, LLC
Knockout Plumbing & Mechanical, LLC
5.0(
14
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2019

Emergency services offered

Warranties offered

"We were in a jam. We are attempting to buy our first home. We had our inspection scheduled and on the morning of, we learned of a potential plumbing issue. There was a report filed with the city stating that a couple of years ago there was some kind of sewer back up. This house is old, so I wanted to make sure we weren't signing up for any potential problems. I called around to local plumbers in the area. NONE of them were able to accommodate our need on this shortened time frame. I got Zach's number from a contractor friend of mine and in a last ditch effort gave him a call. Unlike some of the other plumbers I'd spoken with, Zach validated my concerns and informed me that he would recommend that I have my system inspected. He was very patient with my partner and I, making room for us that evening to show up in exemplary fashion. He did a full inspection of our sewer lines with a camera and explained to us what the different piping meant. He then tested our water pressure and advised us to request that the seller offer concessions to cover the cost of putting in a pressure reduction valve. He explained the reasoning behind his recommendations and took time to insure that we understood why he was recommending these services. He also took the time to explain and answer questions about potential upgrades as my partner wants to upgrade the hot water tank. He outlined different product options and explained with great knowledge and detail the differences between the products. I would highly recommend this company. If we get the home we will definitely be having this company come back and preform the necessary work that is needed for our new home."
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+53

Recommended by100%of homeowners
Avatar for TerraFirma Foundation Systems
TerraFirma Foundation Systems
4.0(
99
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"I have had two issues since they installed the new sump pump and irrigation. Issue number one was water still getting passed the new concrete. The other issue is that the new concrete was not level at all which has caused issues with the new flooring I installed. However, their customer service is top notch and will work hard to take care of you."
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%
95 neighbors recently requested a quote
Avatar for All Pro Plumbing Northwest, LLC
All Pro Plumbing Northwest, LLC
4.5(
572
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Emergency services offered

Warranties offered

"Noel at All Pro Plumbing did a great job for us! Honest, reliable, affordable plumbers are extremely hard to find. Noel will be our guy going forward. Thank you for the great service!"
Our Team
129 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Groundworks
Groundworks
4.3(
313
)

Serving Seattle, WA and surrounding areas

Approved (Corporate)

In business since 1995

Free estimates

Emergency services offered

"Had Groundworks install a drainage system and sump pump in our home’s crawl space. Anthony and his crew, Jordon, Uriel, and James were Outstanding. It was a three day job. They were on time every day and worked their tails off each day. It was a muddy job in cramped quarters. They never complained. Anthony kept me updated on the progress they made each day. Anthony shared pictures of the job as it progressed. They cleaned up the job site each day. Anthony went over all the details at the completion of the job and answered all of my questions. The whole process was Great. From the initial inspection done by Kristy to the office staff and the installation. The communication was also Great. I highly recommend Groundworks for a complete and thorough job."
Foundation
Foundation
Foundation
Concrete
Concrete

+16

Response time2 days
177 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Apollo Plumbing
Apollo Plumbing
4.5(
630
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2005

Emergency services offered

Credit card accepted

"It went well. Apollo plumbing got the job done and that’s what I needed. You get what you pay for! If you want the job done right, I recommend Apollo."
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+4

11 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Pipers Drain Repair LLC
Pipers Drain Repair LLC
4.8(
14
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Pipers Drain Repair is a trusted provider of professional plumbing company services dedicated to keeping residential and commercial plumbing systems flowing efficiently. With a commitment to quality workmanship, fast response times, and exceptional customer service, Pipers Drain Repair specializes in diagnosing and resolving a wide range of plumbing issues, from leaking water line repairs to full house repipes. Using advanced equipment and proven techniques, the company delivers reliable, long-lasting solutions that help prevent costly future problems. Pipers Drain Repair takes pride in offering honest assessments, transparent pricing, and customized services tailored to each customer’s needs. Whether handling routine maintenance, drain inspections, hydro jetting, or complex repairs, the team is focused on delivering dependable results with minimal disruption. Known for professionalism, integrity, and attention to detail,

Liner Install
Liner Install
sewer camera inspection
Sink Drain Repair
Sink Drain Repair

+39

1 neighbors recently requested a quote
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FAQs for sump pump or interior foundation drains installation projects in Seattle, WA

Most residential pumps draw approximately 1,300 to 2,900 watts when they first start, then settle at roughly 800 to 1,050 watts during normal operation. The exact number depends on the motor’s horsepower and how often the float switch tells the pump to run. Even at the high end, the electricity cost is minor compared with the expense of cleaning up a flooded basement.

Grab a ruler and an empty 18‑inch‑wide pit. During a steady rain, time how much the water rises in one minute. Multiply that depth (in inches) by 60 to calculate gallons per hour, then add 50% for safety. If the result tops 2,100 gallons per hour—about 35 gallons a minute—you’ll need a 3/4‑horsepower unit. Anything lower, and a 1/3- or 1/2-horsepower pump should do the trick.

Loud rattling, constant cycling, or shuddering vibrations are the pump’s way of telling you it’s on its last legs. Musty smells, higher electric bills, and visible rust are other red flags. If the unit is 10 years old or older and exhibits any of these symptoms, replace it before the next heavy rain turns your basement into a wading pool.

You don’t have to hire a licensed plumber, but you should still bring in someone who installs sump pumps for a living—whether that’s a plumber, basement‑waterproofing specialist, or experienced handyman. They know the local codes, can wire the pump safely, and will test the system before they leave. Skipping professional help might void the warranty and could leave you with a pump that fails when you need it most.

Not every basement needs a pump, but if your home sits in a floodplain, has a high water table, or has ever taken on water during a storm, a sump pump is inexpensive insurance. For basements that only struggle with condensation or the occasional damp spot, sealing cracks and improving drainage may be all that is needed.

The Seattle, WA homeowners’ guide to sump pump or interior foundation drains installations

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