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Waterproofing · Dallas, TXLast reviewed October 2026

7 Best Waterproofing Companies in Dallas, TX (2026)

TenBestFind ranks 7 waterproofing contractors in Dallas, TX, listed in Google's order among the companies that passed our checks. Each company was checked against the criteria set out under How we chose. Lists name up to ten companies, and this one stops at 7 because only 7 met them. The list was last reviewed on October 21, 2026.

Olshan Foundation Repair, Brown Foundation Repair and KPost Roofing & Waterproofing lead our shortlist of seven Dallas companies for drainage, crawl space moisture and below grade waterproofing, each with at least a 4.5 Google rating and 50 reviews. Dallas is a slab on clay market, so most firms here are foundation specialists who also sell French drains, sump pumps or encapsulation, and we say so on every profile.

7 companies reviewed7 rankedHow We Rank

The Ranking

Our top 7 waterproofing contractors in Dallas

Dallas homeowners rarely deal with flooded basements. Most houses sit on slabs over expansive clay, and the water problems that show up are different: soil that swells and shrinks with the rain, gutters that dump beside the foundation, and pier and beam homes in places like Lakewood and Oak Cliff where a damp crawl space breeds mold and soft floors. That is why this list leans toward firms that pair foundation work with drainage and moisture control, and why only a few pure waterproofers appear. Seven companies passed our checks, so this is a short list on purpose rather than a padded ten. Several have their offices just outside the city limits in Garland, Euless and Haltom City, and each profile says where the office is. Texas does not issue a state licence for waterproofing or foundation contractors, so a licence lookup will not settle anything. Before you sign, ask for proof of insurance, read the Better Business Bureau record, check whether the job needs a City of Dallas permit, and use the Texas State Board of Plumbing Examiners lookup if the work includes plumbing such as a sump discharge line. Get the warranty in writing, including whether it covers drainage work and whether it transfers when you sell.

Showing 7 of 7
  1. 01

    Best for foundation repair paired with drainage and crawl space moisture control

    Olshan Foundation Repair

    4.8(2111 Google reviews)
    Best forFoundation repair paired with drainage and crawl space moisture control
    In business93 years
    WarrantyLifetime transferable warranty available on the Cable Lock ST Plus foundation system. Transfer needs a form, a fee and paperwork returned within 90 days of the sale. No drainage warranty is stated on the website.
    EmergencyNot listed

    Why we picked them

    4.8 stars from 2,094 Google reviews, with French, surface and subsurface drains, sump pumps and crawl space encapsulation listed on its site.

    What we like

    • Crews arrive on time and explain each step
    • Properties left tidy after digging
    • Real drainage, sump and crawl space menu

    Things to consider

    • A reviewer paid more after the crew corrected the first plan, and no drainage warranty is stated.
    Key details
    Best for
    Foundation repair paired with drainage and crawl space moisture control
    Service area
    Dallas
    Address
    1614 Bluebank Rd, Dallas, TX
    Years in business
    93 years
    Warranty
    Lifetime transferable warranty available on the Cable Lock ST Plus foundation system. Transfer needs a form, a fee and paperwork returned within 90 days of the sale. No drainage warranty is stated on the website.
    Financing
    Available
    Credentials
    BBB A+ rating
  2. 02

    Best for drainage and crawl space moisture on North Texas clay

    Brown Foundation Repair

    4.5(523 Google reviews)
    Best forDrainage and crawl space moisture on North Texas clay
    In business63 years
    WarrantyNot listed
    EmergencyNot listed

    Why we picked them

    Rated 4.5 from 522 Google reviews, it is a Dallas firm since 1963 with a full drainage line including HydraWay and sump pumps.

    What we like

    • Wide drainage menu including French drains, HydraWay and sump pumps
    • Publishes sample sump pump prices
    • Serving Dallas since 1963

    Things to consider

    • No warranty length or transfer terms are published, and one detailed review cites poor communication.
    Key details
    Best for
    Drainage and crawl space moisture on North Texas clay
    Service area
    Dallas
    Address
    1619 Bluebank Rd
    Years in business
    63 years
    Financing
    Available
    Credentials
    A+ Better Business Bureau rating (as stated by the company)
  3. 03

    Best for commercial plaza deck, below grade and building envelope waterproofing

    KPost Roofing & Waterproofing

    4.9(856 Google reviews)
    Best forCommercial plaza decks, below-grade walls and building envelope sealing
    In business22 years
    WarrantyThe waterproofing page says KPost guarantees long-term protection against leaks but gives no length or conditions.
    EmergencyNot listed

    Why we picked them

    4.9 from 858 Google reviews, and a Dallas firm since 2004 with a dedicated commercial waterproofing page.

    What we like

    • Founded 2004 and now 400+ employees
    • Waterproofing page covers below grade walls and plaza decks
    • 4.9 from 858 Google reviews

    Things to consider

    • It is a roofer first, and every review we read was about roofing, not waterproofing.
    Key details
    Best for
    Commercial plaza decks, below-grade walls and building envelope sealing
    Service area
    Dallas
    Address
    1841 W Northwest Hwy
    Years in business
    22 years
    Warranty
    The waterproofing page says KPost guarantees long-term protection against leaks but gives no length or conditions.
    Credentials
    Member, National Roofing Contractors Association (NRCA)
  4. 04

    Best for pier and beam owners with a damp, humid crawl space

    Olympic Restoration Systems

    4.7(59 Google reviews)
    Best forDallas pier and beam owners with a damp, humid crawl space
    In business21 years
    WarrantyBasement waterproofing system carries a lifetime warranty that transfers when you sell the home; crawl space repair solutions include a written warranty
    EmergencyAvailable

    Why we picked them

    4.7 stars from 59 Google reviews, in business since 2005, with a Basement Systems CleanSpace crawl space system and named crews.

    What we like

    • Crawl space encapsulation is its lead service
    • Crew members praised by name in reviews
    • Transferable lifetime basement warranty and same as cash financing

    Things to consider

    • Reviews describe a 43 day job promised in 5 to 6 days, and unreturned warranty calls.
    Key details
    Best for
    Dallas pier and beam owners with a damp, humid crawl space
    Service area
    Dallas
    Address
    2408 Minnis Drive, Haltom City, TX
    Years in business
    21 years
    Warranty
    Basement waterproofing system carries a lifetime warranty that transfers when you sell the home; crawl space repair solutions include a written warranty
    Emergency service
    Available
    Financing
    Available
    Credentials
    Certified Radon Professional
  5. 05

    Best for pier and beam homes needing foundation work plus drainage

    Align Foundation Repair

    4.6(54 Google reviews)
    Best forPier and beam homes needing foundation work plus drainage or crawl space moisture control
    In businessNot listed
    WarrantyTransferable lifetime warranty on concrete and steel piling, limited lifetime transferable warranty on drilled piers, 5-year limited warranty on spread footing. Transfer must be requested within 45 days of purchase.
    EmergencyNot listed

    Why we picked them

    4.6 stars from 54 Google reviews, a family owned Garland firm with a full drainage and crawl space menu beyond foundation piers.

    What we like

    • Brothers Jason and Josh Spector own it and are named
    • French, channel and surface drains, sump pumps, StegoCrawl encapsulation
    • Transferable lifetime piling warranty, free estimates, financing

    Things to consider

    • Only 54 reviews, and a June 2026 reviewer never got a promised quote.
    Key details
    Best for
    Pier and beam homes needing foundation work plus drainage or crawl space moisture control
    Service area
    Dallas
    Address
    417 Gautney St, Garland, TX
    Warranty
    Transferable lifetime warranty on concrete and steel piling, limited lifetime transferable warranty on drilled piers, 5-year limited warranty on spread footing. Transfer must be requested within 45 days of purchase.
    Financing
    Available
    Credentials
    BBB accredited, A+ rated
  6. 06

    Best for Dallas slab homes with foundation movement and water problems

    Structured Foundation Repairs

    4.8(2026 Google reviews)
    Best forDallas slab homes with foundation movement and water problems
    In business23 years
    WarrantyLifetime transferable warranty against re-settlement on new concrete and steel pilings; one year transferable warranty on pier and beam understructures.
    EmergencyNot listed

    Why we picked them

    4.8 stars from 2,032 Google reviews, with drainage correction sold as its own service next to engineer verified foundation repair.

    What we like

    • 4.8 from 2,032 Google reviews
    • Independent engineer reports before and after repairs
    • Lifetime transferable piling warranty

    Things to consider

    • Foundation first firm with no crawl space or interior basement waterproofing, and its office is in Euless.
    Key details
    Best for
    Dallas slab homes with foundation movement and water problems
    Service area
    Dallas
    Address
    13301 Trinity Blvd #133, Euless, TX
    Years in business
    23 years
    Warranty
    Lifetime transferable warranty against re-settlement on new concrete and steel pilings; one year transferable warranty on pier and beam understructures.
    Financing
    Available
    Credentials
    General liability insurance and workers compensation coverage
  7. 07

    Best for slab homes where drainage and foundation movement overlap

    Stratum Foundation Repair

    4.9(58 Google reviews)
    Best forDallas slab homes where drainage and foundation movement overlap
    In business20 years
    WarrantyLifetime transferable warranty on pier repairs. Transfer is free within 6 months of repair and $225 after. Claims reviewed by an independent licensed engineer, with an engineer's report and plumbing leak test required.
    EmergencyNot listed

    Why we picked them

    4.9 stars from 58 Google reviews, with a stated drainage line of French drains, surface drains and grading alongside 5,000+ pier repairs.

    What we like

    • Free written inspection with slab elevation readings
    • French drains, regrading and gutters on offer
    • Lifetime transferable pier warranty with independent engineer review

    Things to consider

    • No basement, sump or crawl space services listed, and the drainage work has no stated warranty.
    Key details
    Best for
    Dallas slab homes where drainage and foundation movement overlap
    Service area
    Dallas
    Address
    14875 Preston Rd Ste 550
    Years in business
    20 years
    Warranty
    Lifetime transferable warranty on pier repairs. Transfer is free within 6 months of repair and $225 after. Claims reviewed by an independent licensed engineer, with an engineer's report and plumbing leak test required.
    Financing
    Available
    Credentials
    A+ Better Business Bureau rating

Side by Side

Compare the top waterproofing contractors in Dallas

Ranking position reflects our editorial review, not customer ratings.

Editorial comparison of the 7 ranked companies. Customer ratings, where shown, come from the source named on each company profile.
RankCompanyBest forKey servicesService areaGoogle ratingEmergencyProfile
01Olshan Foundation RepairFoundation repair paired with drainage and crawl space moisture controlDallas4.8(2111)Not listedView
02Brown Foundation RepairDrainage and crawl space moisture on North Texas clayDallas4.5(523)Not listedView
03KPost Roofing & WaterproofingCommercial plaza decks, below-grade walls and building envelope sealingDallas4.9(856)Not listedView
04Olympic Restoration SystemsDallas pier and beam owners with a damp, humid crawl spaceDallas4.7(59)YesView
05Align Foundation RepairPier and beam homes needing foundation work plus drainage or crawl space moisture controlDallas4.6(54)Not listedView
06Structured Foundation RepairsDallas slab homes with foundation movement and water problemsDallas4.8(2026)Not listedView
07Stratum Foundation RepairDallas slab homes where drainage and foundation movement overlapDallas4.9(58)Not listedView

Coverage

Waterproofing companies serving Dallas and nearby areas

Most companies in this ranking work across Texas and the surrounding suburbs. Coverage and travel fees vary, so confirm your address is inside the service area before scheduling.

  • Dallas

Nearby rankings

Service coverage across Dallas. Individual company areas are listed on each profile.

Methodology

How we chose the best waterproofing contractors in Dallas

We searched Google Maps for waterproofing, drainage, crawl space and foundation drainage in Dallas and kept companies that were operational, rated 4.5 or higher on Google with at least 50 reviews, had a working company website and a staffed street address, and actually sold drainage, waterproofing or crawl space moisture work. The list follows Google's order across those searches. We rejected firms with mailbox or home addresses, doorway or template sites, piers only contractors, restoration firms and franchise pages with no local staff. Ratings and review counts were read on October 21, 2026. No company paid for a place on this list.

Read our full ranking methodology
Evaluated7
Ranked7

Hiring

How to choose a waterproofing contractor in Dallas

  1. Verify insurance and credentials

    Ask for a current certificate of insurance and confirm registration or licensing with the authority that issues it, not with the company.

  2. Ask for a written estimate

    Scope, materials, removal, disposal and who pulls the permit should all be named on the page rather than agreed on the doorstep.

  3. Compare multiple quotes

    Two or three bids on the same scope. A number far below the others usually means something has been left out of it.

  4. Understand the warranty

    Separate the manufacturer's warranty on materials from the company's own warranty on the work, and get both in writing.

  5. Ask who performs the work

    Find out whether the crew are employees or subcontractors, and who supervises them on the day.

  6. Check recent local projects

    Ask for addresses or photographs of comparable jobs finished nearby in the last year or two.

  7. Avoid high-pressure sales

    A discount that expires today, or a knock on the door after a storm, is a reason to slow down rather than sign.

  8. Get everything in writing

    Change orders, timeline and payment schedule included, before the first payment changes hands.

Questions to ask before hiring

0 of 10 asked

Red flags

  • No verifiable local business address or registration
  • Pressure to sign on the first visit
  • A demand for full payment up front
  • An offer to cover or waive your insurance deductible
  • Refusal to put warranty terms in writing
  • A quote that will not itemize scope

Keep Going

Related home services in Dallas

FAQ

Waterproofing companies in Dallas FAQs

Does Texas require a licence for waterproofing contractors in Dallas?

No. Texas does not issue a state licence for waterproofing or foundation contractors, so there is no licence number to look up. Ask for proof of liability insurance, read the company's Better Business Bureau record, check whether the job needs a City of Dallas permit, and use the Texas State Board of Plumbing Examiners lookup when the work includes plumbing such as a sump pump discharge line.

How much does drainage or crawl space waterproofing cost in Dallas?

It depends on the scope, so get at least two written quotes. One listed company publishes sump pump installs at $1,200 to $2,400, while French drains, encapsulation and exterior work are priced by the linear foot or the job after an inspection. Ask what the quote includes, how long the warranty runs, and whether it transfers when you sell the house.

Why are most Dallas waterproofing companies also foundation repair firms?

Because most Dallas homes sit on slabs over expansive clay, water problems usually show up as soil movement, poor grading and damp crawl spaces under pier and beam houses rather than flooded basements. The same crews who level a foundation often install French drains, sump pumps and vapor barriers. We note each company's main trade on its profile so you know who leads with what.

Editorial Record

About this ranking

Originally published
October 2026
Last reviewed
October 2026
Companies evaluated
7

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