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Manchester, NH35 Pine St., Manchester, NH 03103
Verified record
Thor Basement Waterproofing New Hampshire says on its website that it has been in business for 20 years and names Manchester as its service area. The site's service menu lists basement crack repair, basement waterproofing, crawl space encapsulation, foundation repair, French drain installation and sump pump installation.
Specializes in
Service area
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1 change recorded — last scanned Oct 31, 2026.
Typical New Hampshire range for this kind of work, from regional averages — not a quote from Thor Basement Waterproofing New Hampshire. 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
$6,700 – $13,200
Typical waterproofing project around $9,950
