Verified record
No state license for this trade. New Hampshire doesn't license or register waterproofing / foundationbusinesses, so there's no state registry to check. That's true of every waterproofing / foundation business in the state, not a mark against this one. Insurance is self-reported.
Highlights
- A dry basement — a 2025 customer reported no water issues for a year
- On-time work — a 2025 customer said John finished within his estimate
- A full cleanup — a 2025 customer said mess and noise stayed minimal
- Competitive price — a 2025 customer compared three companies for a French drain
Wet basements are the work in front of The Basement Ace. Its website lists bowing wall repair, wall crack repair, structural wall repair for basements, foundation wall restoration, underpinning and bracing, and foundation and wall anchors. A 2025 customer said John installed a complete perimeter basement French drain and two sump pumps after a number of basement water issues, finished within the time frame and did a full cleanup. That 2025 customer added that there had been no water issues through a year of snow and rain. In a 2025 review, a customer said they hired John and his crew to keep a Center Ossipee home dry after a flood, and that he installed French drains and a new sump pit with battery back ups. That 2025 customer wrote that the basement was bone dry afterward. One more 2025 customer, whose basement flooded every year, contacted three basement/foundation experts about a French drain and said The Basement Ace was competitively priced. That 2025 customer said John was on time for the estimate appointment and the start of the job, and finished within the timeframe he estimated.
What does basement waterproofing cost in Greater Nashua?
Typical your area range for this kind of work, from regional averages — not a quote from The Basement Ace. Use it to sanity-check bids, then get the real number in writing.
Not sure which you need? Start with an inspection — many reputable companies assess free, and independent assessments run up to $500.
The wall run getting the drain — a full 30×40 ft basement is about 140 ft.
Estimated range
$7,600 – $15,000
Typical waterproofing project around $11,300
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