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5 Best Waterproofing Companies in Denver (2026)

Ranked by real Google ratings and review volume · How we chose

Brad Smith
By Brad Smith, Home Services Expert · ✓ Updated · 7 min read

We compared 20 waterproofing companies in Denver on Google Maps · 5 listed · How we rank

Waterproofing companies in Denver turn out to be foundation and concrete specialists as often as wet-basement fixers. The businesses below hold more than 5,400 Google reviews between them, all rated 4.7 or higher, yet most of the written feedback describes lifting slabs and stabilizing walls, and HomeStrong's reviews are the ones that describe crawl space encapsulation.

Short answer: Groundworks Foundation Repair Denver has the largest review base here, 4.7 from more than 2,600 Google reviews, though its reviews describe concrete leveling. Liftech Concrete Stabilization Systems (4.9, more than 1,100 reviews) lists basement waterproofing on its site, and HomeStrong (5.0, more than 400 reviews) lists drains, sump pumps and crawl space work. Ask each company exactly which water-control work is in your quote.
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Foundation and Water-Control Firms Compared

# Business Rating Reviews Best for
1 Groundworks Foundation Repair Denver 4.7 ★ 2,678 Concrete leveling at scale View ›
2 Liftech Concrete Stabilization Systems 4.9 ★ 1,178 Concrete lifting plus basement options View ›
3 Thrasher Foundation & Concrete Repair 4.8 ★ 930 Drains, downspouts and concrete repair View ›
4 HomeStrong 5.0 ★ 407 Crawl spaces and basement waterproofing View ›
5 Colorado Structural Repair 4.8 ★ 262 Structural assessments and wall bracing View ›
5 Best Waterproofing Companies in Denver (2026)

Who does what in Denver

Groundworks Foundation Repair Denver logo
#1 Overall🕑 Open 7 days↩ Responds to reviews

Groundworks Foundation Repair Denver

4.72,678 Google reviews

Groundworks Foundation Repair Denver is the Denver location of the Groundworks foundation repair brand, based on Ivy Street. Google files it as a waterproofing service, and its reviews describe lifting and leveling concrete: patios, driveways and garage slabs. Its Google hours run from early morning to 9 PM every day of the week.

What people praise

  • One reviewer had a back patio slab that had sunk several inches raised level
  • Another had an uneven driveway and garage floor lifted and filled in a large job
  • Reviewers describe estimators who explain the whole process up front
  • One reviewer says an inspector recommended only what he would do in his own house

Worth knowing

  • Reviewers describe concrete work, so confirm any basement waterproofing scope with your estimator
Reputation scorecardrank in Denver
Rating4.7 / 5
Review volume2,678 · 98th
Confidencevery high
Recency3 months ago
Info completenesssite · phone · hours
Rating breakdown90% 5-star
✓ VerifiedSource: Google

Our take: The most-reviewed name on the page and a solid choice for sunken slabs and driveways. For wet-basement work, ask what it would actually install.

Website Book now+1303-529-2006 Directions

4686 Ivy St, Denver, CO 80216

LI
#2🕑 Open 7 days↩ Responds to reviews

Liftech Concrete Stabilization Systems

4.91,178 Google reviews

Liftech Concrete Stabilization Systems works from Alameda Parkway in Lakewood. Its site lists concrete leveling, foundation repair, new concrete, egress windows and basement waterproofing, which it describes as including sump pumps, wall tiles and encapsulation. It serves residential and commercial customers across the Front Range.

What people praise

  • Reviewers describe lifting patio sections and garage and doorstep pads in about an hour
  • One reviewer had an old garage slab addressed, praising the assessor and the installer
  • Reviewers mention friendly crews and tidy job sites
  • Several reviewers call the pricing reasonable or fair

Worth knowing

  • One reviewer found the contract wording dense before the work itself went well
Reputation scorecardrank in Denver
Rating4.9 / 5
Review volume1,178 · 93rd
Confidencevery high
Recency7 weeks ago
Info completenesssite · phone · hours
Rating breakdown94% 5-star
✓ VerifiedSource: Google

Our take: Highly rated and well reviewed for concrete lifting, with basement waterproofing on its site. A good call if you want both under one roof, but ask for the waterproofing scope in writing.

Website+1303-529-1023 Directions

12870 W Alameda Pkwy, Lakewood, CO 80228

Thrasher Foundation & Concrete Repair logo
#3🕑 Open 7 days↩ Responds to reviews

Thrasher Foundation & Concrete Repair

4.8930 Google reviews

Thrasher Foundation & Concrete Repair is based in Henderson and serves the Denver area, with a Google listing as a waterproofing service and concrete contractor. Its reviews describe driveway and porch leveling, crack repair and drainage work such as downspouts and french drains. It is open seven days a week.

What people praise

  • One reviewer's project covered settling porch cracks, driveway leveling, a downspout and french drains
  • Another reviewer says a documented change order was used when the scope shifted
  • A reviewer mentions a five-year warranty and a follow-up visit that repaired a driveway area
  • Reviewers describe punctual, courteous technicians

Worth knowing

  • One reviewer reported streaking in a sealed surface and is working with the company on a fix
Reputation scorecardrank in Denver
Rating4.8 / 5
Review volume930 · 88th
Confidencevery high
Recency2 months ago
Info completenesssite · phone · hours
Rating breakdown94% 5-star
✓ VerifiedSource: Google

Our take: A capable option when drainage and concrete repair come together. Most of its written feedback is about concrete, so ask what drainage work your quote includes.

Website Book now+1720-513-0951 Directions

9652 Hanover Ct W, Henderson, CO 80640

HomeStrong logo
#4🕑 Open 6 days/wk↩ Responds to reviews

HomeStrong

5.0407 Google reviews

HomeStrong is a family-owned foundation and waterproofing company on York Street in Denver. Its site lists foundation repair, basement waterproofing with interior and exterior drains and sump pumps, crawl space repair and encapsulation, concrete repair and egress windows. It is open Monday to Saturday.

What people praise

  • One reviewer had a crawl space encapsulation reinstalled after a major leak, in a little over three days
  • Reviewers describe a crawl space converted to a basement and a walkout basement with a ramp
  • Another reviewer had an unfinished basement dug out, a support beam replaced and an egress window added
  • Reviewers praise daily updates from the crew

Worth knowing

  • Several reviews are big excavation or remodel projects, so ask for waterproofing work to be priced on its own
Reputation scorecardrank in Denver
Rating5 / 5
Review volume407 · 83rd
Confidencehigh
Recency6 weeks ago
Info completenesssite · phone · hours
Rating breakdown99% 5-star
✓ VerifiedSource: Google

Our take: The clearest match for crawl space and basement water control on this page, and the only business here rated a perfect 5.0. Its reviews also show larger construction projects.

Website+1720-706-9068 Directions

4780 York St, Denver, CO 80216

CO
#5🕑 Open 5 days/wk↩ Responds to reviews

Colorado Structural Repair

4.8262 Google reviews

Colorado Structural Repair is based on South Zuni Street in Englewood. Its site lists foundation repair, crack repair, wall bracing and anchors and helical piers, along with commercial projects, and names Denver among several Colorado service areas. It also mentions waterproofing in its page description.

What people praise

  • Several reviewers describe honest assessments, including advice that no foundation work was needed
  • One reviewer had a landscaping fix recommended in place of foundation repair
  • A reviewer who needed two basement walls straightened praised the communication and the engineer it works with
  • One reviewer says moisture testing was done on walls and ground before any structural advice

Worth knowing

  • Its reviews focus on structural assessments and wall straightening more than waterproofing systems
Reputation scorecardrank in Denver
Rating4.8 / 5
Review volume262 · 78th
Confidencehigh
Recency7 weeks ago
Info completenesssite · phone · hours
Rating breakdown94% 5-star
✓ VerifiedSource: Google

Our take: A good first stop when you aren't sure whether the problem is structural or just water. Pair it with a drainage specialist if moisture is the main issue.

Website Book now+1720-441-3611 Directions

3195 S Zuni St, Englewood, CO 80110

6

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How the scorecards work

Each number comes from public Google data on the date shown. Rating is the live Google star average. Review volume is how many customers have rated the business, compared with other Denver foundation and waterproofing companies. Confidence weighs the rating by that volume, so a 4.8 from hundreds of people counts for more than a 5.0 from a handful. Recency reflects how lately customers are still leaving reviews. No business can pay to change these numbers.

What drives waterproofing and foundation pricing in Denver (2026)

Reviewers describe pricing as reasonable, fair or competitive, but none state a figure, so there is no dollar table. Scope moves the quote more than anything: lifting one slab, adding a downspout and french drain, encapsulating a crawl space and stabilizing a foundation wall are very different jobs. Ask for an itemized written bid and a clear statement of what the warranty covers.

Waterproofing and foundation help around Denver

These companies work from Denver, Lakewood, Henderson and Englewood, and reviewers describe jobs at homes across the metro area. If you’re searching for waterproofing near me, each listing shows a phone number and directions so you can call the closest office.

Questions to ask before you hire a waterproofing company

  • Does this quote stop water coming in, or only repair the concrete or structure?
  • Will you install drains, a sump pump or a vapor barrier, and where does the water go?
  • Who will assess the problem, and are they tied to a sales commission?
  • What does the warranty cover, and for how long?
  • Can you price the waterproofing separately from any excavation or remodeling work?

Frequently asked questions

Do these Denver companies fix wet basements, or mostly foundations and concrete?

Mostly foundations and concrete, going by their reviews. Groundworks and Liftech reviewers describe lifting slabs, Thrasher reviewers describe leveling and drainage work, and Colorado Structural Repair reviewers describe assessments and wall straightening. HomeStrong’s reviews include crawl space encapsulation, and its site lists drains and sump pumps.

Is concrete leveling the same as waterproofing?

No. Lifting a sunken patio or driveway slab is a different job from keeping water out of a basement, so ask which one your quote covers. Liftech lists both concrete leveling and basement waterproofing on its site, while Groundworks reviewers describe concrete lifting.

What does redoing a crawl space encapsulation involve?

One HomeStrong reviewer had a crawl space liner cut out to drain a major leak, then replaced after the ground dried, and says the project took a little more than three days. Ask any company how it handles drying out and what vapor barrier it installs.

Will a structural company tell me when I don’t need repairs?

Several Colorado Structural Repair reviewers say their assessments ended with no foundation work recommended, a landscaping referral, or a suggestion to address moisture sources first. That is one reviewer’s experience each, so ask any company what it would do if the structure turns out to be sound.

Where to start

For a wet crawl space or basement, HomeStrong is the clearest fit on this page, and Liftech is worth a call if you also have sunken concrete. Use Colorado Structural Repair when you need to know whether the issue is structural at all. Whoever you call, get the water-control scope in writing.

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