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Top-Rated Sump pump or interior foundation drains installers in Stanwood - Updated Nov 2026

Avatar for Insulation Co., LLC - Removal & Clean Outs
Insulation Co., LLC - Removal & Clean Outs
4.9(
226
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"Water had always been a problem for my crawlspace, especially during raining and snowing season. Asking around, installing a French drain and a sump pump appeared to be the solution. I searched around and picked Insulation Co. Estimation without inspection seemed weird at first, but it made totally sense since the foundation layout is all there in the files. Jo had always been responsive, detailed and nice whenever I had questions. Scheduling was easy and Rafael and the team did a great and efficient job onsite. 2 months after the installation, we noticed that there was still standing water and they came back to install more pipes and gravels. We really appreciate the effort."
1
2
3
1
2

+46

Response time5 hrs
Recommended by49%of homeowners
Avatar for All Pro Plumbing Northwest, LLC
All Pro Plumbing Northwest, LLC
4.5(
576
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved

Super Service Award Winner

In business since 1994

Emergency services offered

Warranties offered

"Veteran-owned business. Honest, reputable and on time for the appointment. Ross and David spent all afternoon clearing out two clogged drain spouts and replaced/repaired a badly cracked PVC pipe after hydro jetting them. They inserted a snake with a camera and showed me the problem. They also provided a veteranâ  s discount! Thank You. Brad Pesek"
Our Team
136 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Mad Pipers Plumbing
Mad Pipers Plumbing
4.7(
32
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I went to Mad Pipers for a second opinion after getting a vague and uninformed assessment of my drain issues from a different company. Ragen and Zach not only took the time to figure out the extent of the problem, but they made sure I understood and knew what my options were, without pressuring me to hire them. I respected both their attention to detail and integrity so decided to hire them for the job. Rather than replace the entire drain system as recommended by another company, they discovered the problem areas where roots were growing into the pipes and were able to replace just the necessary sections effectively and efficiently. This included excavating and trenching the line from a tiny crawl space, redirecting the line to a much more practical location outside the house, adding gravel around the new pipe, reconnecting the line to the unaffected section, and complete and tidy cleanup of my yard, all in two days. I have complete faith in these guys and would definitely hire them again for any future plumbing needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

1 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for About Plumbing
About Plumbing
4.6(
66
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved

In business since 2015

Warranties offered

Small jobs welcome

"About Plumbing was great. I will definitely use them again. The other company I had called was way more expensive and I don't think could outdo the work done by Sam. The only think he didn't do was send me information about recirculating pumps but that didn't have anything to do with the work he did."
Sink Install
Water Heater
Pic3
Truck and Equipment
Response time10 hrs
31 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Groundworks
Groundworks
4.7(
17
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Tyler, Danny, & Juan were friendly, professional, and very efficient. They cleared out all the old insulation and rodent leavings under our house Friday in 4-5 hours. Monday they installed insulation, thick white plastic and sealed up the crawl space with a de humidifier and were done by 3:30pm"
Foundation
Foundation
Foundation
Concrete
Concrete

+15

34 neighbors recently requested a quote
Recommended by64%of homeowners
Avatar for MTU Services LLC
MTU Services LLC
5.0(
5
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"We’ve had a lot of crews in our home for various projects over the years, and I have to say this was one of the most courteous. They worked hard, navigating through our kitchen to access the basement and I really appreciated their efforts. Thank you MTU, we now have safe walls in our cellar and fresh beams to keep the house standing ;)"
Elevator pit waterproofing and sealing
Piers under an existing home
Piers under an existing homes middle wall
Solutions/Answers
Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for WA EVERGREEN INSULATION LLC
WA EVERGREEN INSULATION LLC
4.4(
7
)
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, 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 rate93%
Recommended by83%of homeowners
Avatar for Sound Home Preservation
Sound Home Preservation
New to Angi
Sump Pump or Interior Foundation Drains - Install

Serving Stanwood, WA and surrounding areas

Approved

Free estimates

Warranties offered

Credit card accepted

A damp crawlspace, sticking doors, sagging floors, or musty odors are often signs of hidden structural or moisture damage. At Sound Home Preservation, we specialize in crawlspace encapsulation, wood rot repair, structural framing repairs, waterproofing, and foundation stabilization that protect your home's value and your family's health. Our experienced team provides honest evaluations, clear recommendations, and permanent solutions, without high-pressure sales tactics. \n \nSchedule your FREE Home Preservation Inspection today and discover what's happening beneath your home before minor issues turn into major repairs. Call now or request your inspection online, it only takes a minute.

Foundation Damage Signs
Foundation Damage Signs
11 neighbors recently requested a quote
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FAQs for sump pump or interior foundation drains installation projects in Stanwood, 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 Stanwood, 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.