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Find Sump pump or interior foundation drains installers in Maple Valley

Avatar for Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
4.9(
205
)

Serving Maple Valley, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"These guys were great, and the owner, Jo Estrada, a pleasure to work with. A crew of 5 spent 5 hours cleaning, inspecting, and replacing insulation and vapor shield in our crawl space. They took pictures of everything, before and after. THe crew was pleasant, and worked really hard.... couldn't believe how much stuff they removed from under there. The crawl space is tight, but they didn't complain (at least to us!). They gave us good recommendations for some repairs needed for the foundation. All for a most reasonable price, compared to other estimates. They deserve every star they can get!"
1
2
3
1
2

+46

Response time5 hrs
Recommended by52%of homeowners
Avatar for Groundworks
Groundworks
4.6(
247
)

Serving Maple Valley, 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
147 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Schmitty's Plumbing
Schmitty's Plumbing
4.8(
48
)

Serving Maple Valley, WA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Schmitty's Plumbing responded to my Angi's service request almost as soon as I submitted it, and they beat out three other Angi plumbing companies in terms of pricing and transparency. I hired Schmitty's to remove an old double bowl kitchen sink and faucet with a new single bowl sink and upgraded faucet. There was no upselling or attempts to convince us to replace our garbage disposal which two of the other plumbers recommended we do. We saw no reason to replace our disposal which functions well and is not that old. Partners Drake and Gage came out to our home as scheduled, and they got to work immediately working efficiently and thoroughly. We appreciated their no-nonsense, honest, prompt service, and very fair pricing. I chose Schmitty's based on the positive customer reviews, and would hire them again. I told them I would recommend them to all my friends who have plumbing needs!"
Response time1 day
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Sump Pump Wizards LLC
Sump Pump Wizards LLC
New to Angi

Serving Maple Valley, WA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time4 hrs
3 neighbors recently requested a quote
Avatar for South West Plumbing & Waterheaters, LLC
South West Plumbing & Waterheaters, LLC
3.7(
334
)

Serving Maple Valley, WA and surrounding areas

Approved

In business since 1980

Emergency services offered

Warranties offered

"They may be good for business to business, medium to large new construction projects. High operating costs (and high margins?) means higher prices. I do not recommend for a homeowner with an existing single family residence. I needed to replace the galvanized pipe connecting my house to the street for an irrigation project. Between offering the highest bids (before an extra $10k option to install all copper), their nonsensical proposal for an invasive relocation of the line to service the water heater, and their proposal to use an excavator to tear up my yard and remove multiple shrubs and a tree just to replace my water line, I elected to use a different company. I appreciate the business like demeanor, their connections to government and utilities, and that they have the resources to pay for multi year apprenticeships"
Response time11 hrs
37 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Cahill's Plumbing & Heating
Cahill's Plumbing & Heating
4.3(
35
)

Serving Maple Valley, WA and surrounding areas

Approved

Credit card accepted

Customers say: Quick response

"Work was done quickly and professionally. Were very careful to collect and/or cleanup any water drips. Had to cut wall board in laundry room to repair hose bib. Removed as small a piece as possible and replaced when finished."
Recommended by82%of homeowners
Avatar for Puget Sound Plumbing & Heating, Inc.
Puget Sound Plumbing & Heating, Inc.
4.3(
173
)

Serving Maple Valley, WA and surrounding areas

Approved

In business since 2007

Emergency services offered

Warranties offered

"We needed a new dishwasher, garbage disposal, drain kit and faucet installed. We also needed valves replaced We appreciated the customer service and technical expertise provided by Ellis and Ryan. They were very professional and thorough. Three stars for "value for money" only because it seemed very expensive. Maybe due to the addition of replacing some of our PVC lines and valves. But we chose a trusted company because we can't risk water damage."
Kitchen drain replacement
Kitchen drain replacement
Faucet Repair
Replace Water Heater
Tankless

+1

Response time2 hrs
26 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for WA EVERGREEN INSULATION LLC
WA EVERGREEN INSULATION LLC
5.0(
6
)

Serving Maple Valley, WA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Had a great experience with WA Evergreen Insulation from start to end. Rob came to my house, quoted me an insulation install, made absolutely sure that they would not cover any existing knob and tube with insulation and prevent a fire. The crew showed up and completed the job in one day. Once they got started it was clear they knew exactly what they were doing - and they managed to shimmy into the extremely small attic access and cleaned up my rat jerky in the crawlspace! I'm very happy with this job and with this company!"
After Picture Fixed and well protected
Before Picture (DANGEROUS for crawlspace!!)
New Construction Insulation
Protected and Sanitized Crawlspace
Before Picture Of No Insulation and fire hazard

+2

Response time9 hrs
Response rate91%
73 neighbors recently requested a quote
FAQs for sump pump or interior foundation drains installation projects in Maple Valley, 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 Maple Valley, 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.