Top-rated sump pump or interior foundation drains installers.

Get matched with top sump pump or interior foundation drains installers in Seattle, WA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Sump pump or interior foundation drains installers in Seattle

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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+53

Recommended by100%of homeowners
Avatar for Schmitty's Plumbing
Schmitty's Plumbing
4.8(
50
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"We had a tricky leak that needed tracking down. We could hear it, but not see it. Our usual plumber was not available, so found Schmitty's on AngiesList and called. Thankfully, he was available to come out that afternoon, and after some detective work we finally narrowed down the area. It was evening by then, so he brought Trace out first thing in the morning to dig under the foundation and expose the leak. Between the two of them, they solved the issue... which turned out to be not one, but four pinholes in the copper pipe underneath the cement slab foundation. Brian said it might be the trickiest soldering job on the least amount of available pipe (1/4") in a very tight area in 20 years. Their pricing was reasonable and fair for an emergency service. Would definitely call them again. Thanks Schmitty!"
Response time2 days
Response rate100%
Recommended by93%of homeowners
Avatar for All Pro Plumbing Northwest, LLC
All Pro Plumbing Northwest, LLC
4.5(
573
)

Serving Seattle, WA and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Emergency services offered

Warranties offered

"Ross showed up the day after I called. He was prompt, efficient and very helpful as he removed my broken garbage disposal and replaced it with a new one. Outstanding service. Highly recommend All Pro Plumbing Northwest."
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

"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
191 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

"Everyone was very helpful from the front desk to the guys who showed up the next morning. I needed a valve changed so I could have my dishwasher installed and they came out and got it fixed in no time. Have and would recommend to friends"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

12 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

6 neighbors recently requested a quote
Avatar for All City Sewer Repair, LLC
All City Sewer Repair, LLC
4.9(
15
)

Serving Seattle, WA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"We had a smell coming from our shower drain and were concerned it could be something terrible. He assured us it just needed a quick cleanout and showed us how to install a better plug in the cleanout. He did a quick cleanout and didn't charge us anything. We would definitely use them in the future if we ever have any sewer or drain issues. Very professional and courteous."
6”
Response time7 hrs
3 neighbors recently requested a quote
Recommended by60%of homeowners
...
Showing 1-10 of 210
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.