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  • Average homeowner rating star icon4.4
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    Verified foundation drain installation services reviews

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

Drain Unlimited, LLC
4.6(
31
)
Sump Pump or Interior Foundation Drains - Install

Serving Denver, CO and surrounding areas

Approved

In business since 2001

Emergency services offered

Warranties offered

Welcome to Drain Unlimited, LLC. From toilets to faucets and waterheaters to all phase of draining system, you can expect Drain Unlimited, LLC, to provide fast economical quality service for your business or home. Drain Unlimited, LLC, is simply the best Denver plumbing company. When homeowners and businesses in Denver area need plumbing work, they can rely on Drain Unlimited, LLC, to provide the highest quality and quickest service in the area.

Response time7 hrs
Recommended by93%of homeowners
Avatar for Liftech Corporation
Liftech Corporation
4.7(
175
)
Foundation Drainage - Install or Replace

Serving Denver, CO and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"We recently had a team work on our home to fix a variety of foundation problems. In short, good communication and friendly customer service. Our sales rep Michael Freddolino was great. He was quick to respond to my first call and followed up without pestering when my husband and I dropped the ball and explained everything in a way we could understand it. Austin, Johnathan, Chris and Isaiah were the crew who worked at the house and were the nicest and most respectful group of workers. They were careful with our home, inside and out and cleaned up any mess that was made. They communicated very well with us to let us know how the progress was going and other items they ran into so they could be resolved right away. And if you can believe it, we ended up spending less than was originally estimated! I would definitely recommend them."
Driveway
Helical Pier insatll
Driveway
Helical pier Install
Before

+23

Response time5 hrs
1 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Rooter Guy, LLC
Rooter Guy, LLC
4.6(
3,131
)
Sump Pump or Interior Foundation Drains - Install

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"Had them replace a drain pipe in my foundation. They were timely and efficient. Price was very good as I have been through this nightmare before. Really appreciated Keith and Nico! When Keith arrived, I instantly knew I had the right guy advising me on this. Nico did a great job doing the job. Thank you both."
sewer cleaning
1311 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Affordable Radon Solutions, LLC
Affordable Radon Solutions, LLC
4.7(
374
)
Sump Pump or Interior Foundation Drains - Install

Serving Denver, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"These guys came very unpreparedly... they did not bring their own ladders or flashlights. I had to provide them for them. They also cut 3 different holes in my ceiling before deciding to go through the foundation, they then charged me extra for them having to cut so much.... but it did not reflect on the receipt...when they were done they did a horrible job patching and left the plaster a massive mess. Would only recommend if you are selling per the buyer request to put in and you do not care how it looks."
 custom fit pipe-garage install
 Blending isn't a problem
 suction point T intersection into crawl space
Garage Attic Install
 close up view of radon mitigation fan

+25

Response time2 days
Recommended by95%of homeowners
Avatar for Canyon Dirt Works, LLC
Canyon Dirt Works, LLC
4.9(
26
)
Foundation Drainage - Install or Replace

Serving Denver, CO and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"The excellent grading with the protection of a rubber liner and river rock along two foundation walls in July 2019 prevented my basement from flooding recently when my sprinkler manifold next to the foundation broke and water spilled out for 1 1/2 hours, but none came in the basement! Chris and his son were hard-working, efficient, professional, and reasonably priced. I would highly recommend them and their work!"
After
After
After Front
Back
Entry portion road

+32

Response time10 hrs
Response rate85%
2 neighbors recently requested a quote
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Foundation Drain Installation FAQs, answered by experts

It depends on what caused your basement flooding, the extent of the problem, and the risk of the flood continuing. If your flood is coming from a septic system or sewer line, breathing in the sewer gasses can be dangerous, so you should vacate. If the flood occurs from an ongoing natural disaster, relocating to a safe area might be wise. If you just have a plumbing leak or rainwater coming in, you can likely stay in the house if you don’t have electrical lines down there, but make sure you call in professionals to fix the issue immediately.

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.

Some questions you should ask before hiring a plumber or drainage installation company include:

  • Are you licensed and insured?

  • Do you have any customer testimonials I can read?

  • How do you handle unforeseen challenges that occur during the job?

  • Is your fee a flat rate or hourly?

  • Do you do the work, or do you have subcontractors?

  • Is everyone who does the work licensed and qualified plumbers?

  • Is cleanup included in the quote?

  • Do you offer a warranty or guarantee on your work?

In most cases, standard homeowners insurance policies do not cover damage from a sump pump failure or overflow. Coverage for water damage is often limited to sudden, unexpected events like a burst pipe that was not caused by negligence. To be covered for sump pump issues, you will likely need to purchase a specific rider, endorsement, or additional water backup insurance. If your insurer offers this type of coverage, they may require proof that your sump pump is regularly maintained.

The best basement waterproofing method depends on the specific issue causing the water intrusion. For minor problems, simple solutions like installing a properly functioning gutter system to direct runoff away and grading the soil to slope away from your foundation can be effective.

If you have more significant water problems, the solution will need to be more robust:

  • For standing water on the basement floor, a floor drain or a sump pump system may be the best solution.

  • For water pooling around the foundation, installing an exterior French drain can intercept water before it reaches the basement walls.

Other effective waterproofing methods, which can be used depending on your home's specific needs, climate, and soil type, include sealing the interior walls, landscape alteration, installing interior drainage systems, and using a dehumidification system to control moisture levels.

The Denver, CO homeowners’ guide to foundation drain installation services

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