Guilford, CT35 Lone Pine Trail, Guilford, CT 06437
Verified record
Professional Basement Waterproofing describes itself on its BBB profile as a basement waterproofing company specializing in French drains. The Better Business Bureau grades it A+, and it holds a single five-star Google rating. Connecticut lists the company's home improvement contractor registration, HIC.0655031, as expired.
Typical your area range for this kind of work, from regional averages — not a quote from Professional Basement Waterproofing, LLC. 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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1 change recorded — last scanned Oct 14, 2026.
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