Newburyport, MANewburyport, MA 01950
Verified record
Coastal Basement Waterproofing describes itself on its website as a family-owned company that has worked for 35 years. The company says it specializes in basement waterproofing, foundation repair, mold treatments and basement finishing, and it offers free estimates.
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Certified attributes are verified against the public registry. Others are the business's own statement.
1 change recorded — last scanned Sep 22, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Coastal Basement Waterproofing. 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
Fixed a leak others declined4.7