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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon17
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Boulder, CO

*The Angi rating for Basement Waterproofing companies in Boulder, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Boulder, CO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on December 31, 2025

Find Basement waterproofing pros in Boulder

Avatar for Titan Foundation Repair, LLC
Titan Foundation Repair, LLC
4.8(
46
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Boulder, CO and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

"We used Titan Foundation repair to fix a leak in our basement. I was very happy with the cost, speed, and quality of this project. Jonathan also went above and beyond the listed repairs to make sure everything was fixed."
Repair Crack in Foundation
Crack In Foundation
Basement Foundation Repair
Massive Crack
Sealed and Injected Basement Crack

+11

Response time8 hrs
Response rate87%
35 neighbors recently requested a quote
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Avatar for Flatirons Plumbing, Inc.
Flatirons Plumbing, Inc.
4.7(
265
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Boulder, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"100% would reference them to your family, they took care of us as a big company (complete basement systems) like we were the home owners. We took initiative and resolved our customers problems immediately by contacting flat irons plumbing."
Our Flatirons Plumbing Team!
We promise to listen to our customers
The Flatirons Plumbing Team
Response time5 hrs
10 neighbors recently requested a quote
Recommended by83%of homeowners
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Avatar for Thrasher, Inc.
Thrasher, Inc.
4.1(
176
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Boulder, CO and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Thrasher has been awesome to work with on my basement project."
Basement Waterproofing Before and After
Concrete Repair Before and After
Thrasher Services
Thrasher Services
Thrasher Services

+12

Response time2 days
917 neighbors recently requested a quote
Recommended by87%of homeowners
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Avatar for Liftech Corporation
Liftech Corporation
4.7(
175
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Boulder, CO and surrounding areas

Approved

In business since 2012

Free estimates

Warranties offered

"They did exactly what they said. After looking at the basement mudjacking, I noticed that they could have easily done some work to get their recently re-leveled floor to match with the rest of what was around the section they touched. Good work, but no extra effort."
Driveway
Helical Pier insatll
Driveway
Helical pier Install
Before

+23

Response time5 hrs
15 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for No Limits Plumbing & Drains
No Limits Plumbing & Drains
5.0(
109
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Boulder, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Warranties offered

Small jobs welcome

"I had my basement plumbing drains and water lines roughed in. Very professional and honest work. Price was fair and No Limits Plumbing and Drains are easy to work with. If anyone needs a basement roughed in with plumbing please call this company!"
Sink Rough In
Washer
Sink for bathroom
Shower & Toilet
Before Cleanout

+2

Response time7 hrs
94 neighbors recently requested a quote
Recommended by57%of homeowners
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No Limits Plumbing & Drains LLC
5.0(
109
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Boulder, CO and surrounding areas

Approved

In business since 2024

Customers say: True professional

We pride our company on reliability, great communication,\nintegrity, and quality work. We are experts in our trade and will do our best\nto keep you as educated as we can on your particular task or project. We are licensed and insured. We look\nforward to earning your business!

Recommended by57%of homeowners
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Dr. Drain
5.0(
10
)
Basement Drainage Channels - Install

Serving Boulder, CO and surrounding areas

Approved

In business since 2014

Free estimates

Credit card accepted

"Jordan was awesome! He initially sent one of his guys out to check for some gurgling and sediment in our plumbing in the basement. They took a good look and found some grading issues with our pipes. Jordan followed up with me after and then committed to coming out himself to determine options. Throughout it all he was very communicative and extremely knowledgeable. We discussed some options and moved forward with the one that made the most sense. The issue was addressed and Jordan followed up later on to make sure everything was still good. Highly recommend Jordan and team dr.drain!"
Best Dog Ever
Pre Lined CIPP Pipe
Busy Day, Boulder CO
Wining
NuFlow Liner

+1

Response time2 hrs
Response rate100%
8 neighbors recently requested a quote
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Avatar for Groundworks
Groundworks
4.1(
517
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Boulder, CO and surrounding areas

Approved (Corporate)

In business since 1999

Free estimates

Warranties offered

"Very courteous and considerate crew. They took extra precautions to ensure cleanliness and avoid any damage to the floors while moving equipment into the basement. The quality of the work is excellent and conformed exactly to the contract. We are totally satisfied with Complete Basement Systems and highly recommend them for foundation and basement repair work."
Protect Your Basement Before & After
Correct Your Wet Basement
Protect Your Basement
Waterproof Your Basement
Protect Your Concrete Before & After

+16

Response time3 days
222 neighbors recently requested a quote
Recommended by84%of homeowners
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Avatar for Larry’s Legacy Landworks
Larry’s Legacy Landworks
5.0(
9
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Boulder, CO and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

"Dillan with Larry’s legacy land works did a phenomenal job installing our kitchen floor ! Great attention to detail"
Bathroom remodel
Bathroom remodel
Kitchen Remodel
Drywall skim coat
Shower Door Instillation

+4

10 neighbors recently requested a quote
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Avatar for Heart Heating, Cooling, Plumbing & Electric
Heart Heating, Cooling, Plumbing & Electric
4.7(
90
)
Basement Drainage Channels - Install

Serving Boulder, CO and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Was put on the schedule right away. Came on time. Dispatched team to clean up water in the basement. Clean up team was also very timely and punctual."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

4 neighbors recently requested a quote
Recommended by83%of homeowners
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...
Showing 1-10 of 156
Basement Waterproofing questions, answered by experts

Yes, outside leaks can easily cause damage to your home if you don’t have waterproofing measures in place. Regularly check your property for signs of a leak, ensure your home’s landscaping is at least at a 5% slope, your basement windows are sealed, and you have an aligned gutter system to catch rainwater.

The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in. 

If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.

Yes, engineers assess soil load-bearing capacity and provide construction guidelines.

Some basement waterproofing methods can actually cause your water or moisture problems to get worse, which is why it’s so important to call in a professional who knows how to solve your underlying issue and use the appropriate waterproofing methods. An example of this would be applying latex waterproofing paint to the insides of your basement walls without fixing the water issue outside. Doing so can trap moisture in the basement walls, which can promote mold growth, peeling paint, and even damaged concrete. However, when done by a professional, the only downside to basement waterproofing is the up-front cost.

Water can seep into porous materials like wood beams, floor joists, and roof rafters within minutes, but they’ll need to see prolonged exposure before you have structural damage. Mold can start growing within 24 hours, and mold can eat away at the structural components over time. Wood rot is more of a concern, though. Wet and dry rot are fungal infections that set in in moist conditions and rapidly deteriorate wood, causing major structural damage within just a few months in some cases.

The Boulder, CO homeowners’ guide to basement waterproofing services

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

See all articles