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Precision Basement Waterproofing is a Leominster, Massachusetts contractor focused on basement waterproofing, interior drainage and sump-pump work. Thumbtack lists 5.0/5 from 41 ratings, 79 projects and six years in business; recent customer accounts describe French-drain and sump-pump work, prompt communication and no upselling. Before booking, confirm current licensing, warranty coverage, drainage design and any permit responsibilities.
Working with Precision Basement Waterproofing was downright effortless and I'm thrilled we were able to hire them for our sump pump replacement. Nate showed up when he said he would for both the estimate and for the scheduled job.
They did a good job installing a french drain in my basement and were also the lowest bidder out of the companies I contacted. They did not try to upsell me additional products or services.
Nathan was fantastic from start to finish!! My husband and I have a new build that took on water in the basement. He was prompt to reach out, provide a quote, and schedule the work (sump pump solution).
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Precision 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
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1 change recorded — last scanned Sep 14, 2026.
Basement waterproofing5.0
Retaining walls5.0
Bulkhead replacement4.8
Brick and 1850s fieldstone foundations repointed4.8
Structural carpentry4.8
Owner-led communication4.8