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TRUSTED BY STARTUP, WA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon961
    Verified foundation drain installation services reviews

Top-Rated Foundation drain installation pros in Startup - Updated Nov 2026

Avatar for P4 Construction, LLC
P4 Construction, LLC
5.0(
13
)
Foundation Drainage - Install or Replace

Serving Startup, WA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"We hired them to install a 40 foot french drain. Eric was very knowledgeable and professional, not to mention a very nice person and good listener. He was punctual and he and his crew were extemely hard workers. The job functions as promised, looks great and they were very conscientious about how they left the work area neat and clean. I wish I could hire them for other projects."
Response time5 hrs
Response rate94%
Recommended by18%of homeowners
Avatar for Wu Construction
Wu Construction
4.6(
238
)
Foundation Drainage - Install or Replace

Serving Startup, WA and surrounding areas

Approved

In business since 1983

Free estimates

Emergency services offered

"French drain installation along a retaining wall (75 yards). Thomas who handled the sales end of things was friendly and responsive. The crew showed up on time. They were hard working and receptive of customer feedback. They first removed the ivy that was obstructing the work area and then completed the trench on day 1 which uncovered some of the unwelcome water sources. A legacy footing drain was plumbed directly into the main french drain pipe. Perpherated pipe was dropped in on Day 2 followed by river rock, catch basins, and 3 ft dry well installation. Cleanup was done thoroughly. I would hire them again in a heartbeat."
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+11

Response time10 mins
Response rate100%
25 neighbors recently requested a quote
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 Startup, 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
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+46

Response time5 hrs
Recommended by49%of homeowners
Avatar for Andy Construction LLC
Andy Construction LLC
4.9(
30
)
Foundation Drainage - Install or Replace

Serving Startup, WA and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I have a 1906 cottage in N Seattle, with an old porous foundation. Water came into the basement for the first time in 20 years. Another contractor bid the job at $12,000 after 3 site visits and almost a month. Andy came out to the house the same day I talked to him, and estimated the same job at half that price. He followed up with questions, asked about making another visit, came out again and saw that the drainpipe was disconnected at the top of the area being flooded. 75% of the roof's water was pooling against the house. He found a ladder and fixed it and isn't charging me a dime. So, no French drain, no Delta drain, no foundation treatment, no 50' of trenching, no $$$. Andy was timely, reliable, did what he said, and knows his stuff. He was a great communicator, and I feel so so lucky to have found him."
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Response time8 hrs
1 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Groundworks
Groundworks
4.7(
17
)
Sump Pump or Interior Foundation Drains - Install

Serving Startup, 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

32 neighbors recently requested a quote
Recommended by64%of homeowners
Avatar for Mad Pipers Plumbing
Mad Pipers Plumbing
4.7(
32
)
Sump Pump or Interior Foundation Drains - Install

Serving Startup, WA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I t went well. They checked everything before they left and it was working properly. They explained hw to use the new toilets. A new new leak appeared the next morning and they cane right away to fix it."
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+2

1 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Reach Dirt Works LLC
Reach Dirt Works LLC
5.0(
10
)
Foundation Drainage - Install or Replace

Serving Startup, WA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Eli and Tim did a very good job regrading and resurfacing our gravel road. They were professional and courteous. They still have to finish a few details but I’m sure they will complete this in a timely manner. Thumbs up to them👍"
Driveway restoration
Driveway restoration
Driveway restoration
Driveway restoration
Driveway restoration

+6

9 neighbors recently requested a quote
Recommended by33%of homeowners
Avatar for MTU Services LLC
MTU Services LLC
5.0(
5
)
Foundation Drainage - Install or ReplaceSump Pump or Interior Foundation Drains - Install

Serving Startup, WA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

Protect the investment you’ve made with the knowledgeable team at MTU Services LLC. We are your local basement and foundation experts serving all of Washington state and North Idaho. We offer customized basement waterproofing, foundation repair, concrete crack repair, and basement sump pump solutions and egress windows for your home. Contact MTU Services LLC today to learn more about how we can help you protect your home. Give us a call to request a quote or to schedule service.\n\nServices include: leaking basement or crawl space repairs, foundation cracks repaired, lifting piers and levelling for your home or building, sup um systems and more.

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 Cahill's Plumbing & Heating
Cahill's Plumbing & Heating
4.1(
38
)
Sump Pump or Interior Foundation Drains - Install

Serving Startup, WA and surrounding areas

Approved

Credit card accepted

Customers say: Super punctual

"These guys were amazing! We had the plastic water intake valve behind the toilet burst and spray water everywhere at 4am. after cleaning up the mess we called Cahill's at about 6:45am and they arrived by 8:30am to fix the valve, which took them like 15 minutes. I asked them about doing all of the valves in the house (16 total) and they agreed to come back at noon to do all of them. At exactly noon they were back at my house and had all the valves changed out in less than 2 hours. They were friendly, clean, polite, and provided excellent customer service. Jason and Harry were the team that came to my house and I would highly recommend them. And thanks to Russell, the owner, for giving us a great deal on the work his team did. We will be calling on Cahill's for any future plumbing needs."
1 neighbors recently requested a quote
Recommended by82%of homeowners
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Showing 1-10 of 172
Foundation Drain Installation FAQs, answered by experts

Sump pumps remove excess water from the lowest point of your home, which prevents flooding. When a sump pit fills with water, a sump pump pushes that water outside of the basin and into an exterior discharge pipe. From there, the water flows away from your home, so it doesn’t damage your foundation.

The regulations around whether drain pipe installers need to hold licenses or certifications differ based on where you live and the type of drain pipe installed. Municipalities have varying rules and regulations about who can and can’t perform plumbing work. However, we recommend hiring a certified plumber to install or modify your drain lines. Licensed plumbers will perform a high-quality, professional installation, which translates to a lower risk of clogs and leaks in the future. Use Angi’s state licensing tool to confirm the license status of your potential plumber before hiring them to install your drain pipe.

Whether to waterproof your basement from the interior or exterior depends on several factors, including your budget.

Exterior waterproofing is generally considered the superior method because it stops water at the source, preventing it from seeping into and damaging your basement walls. This approach offers the most protection, making it ideal if you use your basement for storage.

By contrast, interior waterproofing is often less expensive and requires less labor because the area is more accessible.

For maximum protection against water leakage and moisture, applying waterproofing measures to both the inside and outside is the best solution. However, if you must choose only one, stopping water from the outside is the most effective approach to preserve your foundation and prevent damage.

You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home. 

However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.

Yes, many contractors offer warranties for their work. Confirm terms before starting the project.

The Startup, WA homeowners’ guide to foundation drain installation services

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