HomeMatchup
21 sections · Waterproofing

Waterproofing, a dry floor after heavy rain

It usually starts with a basement that smells like a basement. The hard part is not the work — it is that every waterproofing company sounds equally sure of itself, and you get one guess. We check licence and insurance before we introduce anyone, and we record the date we checked.

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Waterproofing in short

Waterproofing services fall into four groups: exterior work (excavating to the footing, sealing the wall with a membrane and adding a footing drain), interior work (a perimeter drain channel and a sump pump that collects water and pumps it out), targeted crack repair (epoxy or polyurethane injection), and surface and site work (sealers, gutters, downspout extensions and regrading). Interior drainage plus a sump pump is the most common paid job, typically $4,000-$8,000, while full exterior waterproofing usually runs $5,000-$15,000 (HomeCostLab, 2026).

Basement waterproofing costs $3,000-$10,000 on average in 2026, with most homeowners spending around $5,000, or roughly $3-$10 per square foot (Fixr, 2026). Interior perimeter drainage runs $40-$120 per linear foot, exterior French drains $10-$100 per linear foot, sump pump installation $600-$2,500, and single crack injection $250-$1,000 per crack.

HomeMatchup Shield

Why a pro gets to be on this list

Most sites sell your number to whoever pays the most for it. We check the waterproofing companies we match you with, and we publish the date we checked so you can hold us to it.

Licence checked

We look up the licence with the issuing state or local authority and record the date we checked it.

Insurance confirmed

General liability and, where it applies, workers’ compensation — confirmed with the carrier, not taken on trust.

Reviews read, not counted

We read the recent negatives as well as the average, and we look at how the pro answered them.

Re-checked, not set and forgotten

A licence that lapses drops the pro out of matching. Every record carries the date it was last verified.

Read the full vetting method

No verified waterproofing price ranges published yet.
We don’t publish a cost until we can show the data behind it. If you need a number today, the quote form gives you real prices from local companies.

Honest comparison

HomeMatchup vs. a lead site vs. doing it yourself

Three ways to get this work done. Here’s what each one actually gives you.

Getting waterproofing work done — three routes compared
HomeMatchup Typical lead site DIY
How many companies call youA short, named shortlist you agreed toOften 4–5+ at once, sold to whoever buys the leadNone — the work is on you
Licence & insuranceChecked against the issuing authority, with a date on the recordUsually self-reported by the contractorYour own permits and liability
What it costs youFree — pros pay us, and only for a real matchFree, but your number is resoldMaterials plus your time
Price guidance before you talkPublished ranges with the data behind themRarely shown before you hand over detailsYou research it yourself
If it goes wrongYou have a named, verified company and a record of the checksHard to trace which site sold the leadNo recourse

Describes how HomeMatchup operates and the common lead-generation model. Not a claim about any named competitor.

Homeowners

What people say after they’ve hired

Zero reviews. On purpose.

We’d rather show you nothing than show you someone else’s reviews.

Plenty of sites fill this space with reviews scraped from elsewhere, or written for them. We don’t. The first waterproofing review on this page will come from a homeowner we matched, after their work was finished and paid for.

  • Only from homeowners we actually matched
  • Only after the job is complete
  • Published unedited, including the bad ones
  1. 1You get matchedA few checked pros, free
  2. 2Work gets doneBy a licensed, insured company
  3. 3We ask youOnce, after completion
  4. 4It appears hereExactly as you wrote it
FAQ

Waterproofing questions, answered

The questions homeowners ask us most about waterproofing.

$3,000-$10,000 on average in 2026, most commonly around $5,000, or roughly $3-$10 per square foot (Fixr). Interior systems run $2,000-$7,000 and exterior $5,000-$15,000 (HomeCostLab).
The work is legitimate; some sales practices are not. The pattern to watch for is same-day pricing, a system quoted before anyone examines the exterior, and a refusal to explain where the water enters. If you signed under pressure at home, the FTC Cooling-Off Rule generally gives you three business days to cancel in writing.
You can do the high-value cheap things: clean gutters, extend downspouts, improve grading toward the 6-inch-in-10-feet target (2021 IRC R401.3), run a dehumidifier to EPA's 30-50 percent band, and clean up mold patches under about 10 square feet (EPA). Interior drainage, excavation and structural repair are not DIY work.
Flood is not covered by standard homeowners or renters policies — only a separate flood policy covers flood losses (Insurance Information Institute). Everything else depends on your policy and endorsements. Read your declarations page and ask your agent in writing.
It removes the cause, which is the necessary first step. EPA is explicit that cleaning mold without fixing the water problem means it comes back. Existing mold still needs cleaning up separately.
See all 1 waterproofing question

The wrong waterproofing hire costs more than the right one.

Waterproofing gets sold before anyone finds out where the water is coming from. Treating the symptom indoors leaves the source outdoors. Getting matched takes about a minute, costs nothing, and you can walk away from every quote you receive.

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