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Typical Greater Boston range for this kind of work, from regional averages — not a quote from Premium Waterproofing and Foundations. 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
Premium Waterproofing & Foundation Specialist is listed at 145 Middlesex Ave in Somerville, Massachusetts, offering basement and foundation waterproofing, foundation crack repair, drainage systems, masonry and step rebuilding, retaining walls and chimney work across the inner Boston suburbs — Somerville, Cambridge, Arlington, Medford, Everett, Malden, Belmont, Newton, Brookline, Waltham, Revere and Lexington. Before anything else, note what the Better Business Bureau publishes: an 'Important information' notice reading that, according to information in BBB files, it appears this business is no longer in business. BBB gives the profile no rating at all for that reason, records a single employee under manager James Smith, and opened the file in November 2023. Anyone considering this company should confirm it is still trading before sending money or scheduling work. The review record is a 5-star Google average from 18 ratings with 16 readable comments, and it needs reading with care. Every single comment is five stars, six of them carry the identical date of 17 August 2024, and most are short and generically worded. The company's own website also republishes one of these comments — the crawl-space one — as a testimonial credited to a customer in Strasburg, Pennsylvania, alongside two more testimonials credited to Lancaster and Quarryville, Pennsylvania, for a business that says it serves Somerville. The site additionally still carries unedited 'Lorem ipsum' placeholder text on its contact section. A few comments do read like real jobs. In a July 2024 review a homeowner said two other companies had failed to fix an ongoing basement leak and that James came out, quoted, and fixed it; in a September 2024 review a customer described years of basement seepage finally resolved, with an electrical outlet problem sorted out along the way; in another September 2024 review a customer whose indoor waterproofing system was overwhelmed said the crew did not leave until everything was put back as it was. No rating is published here, and that is deliberate: the balance of what is on file is a business BBB believes has closed and a review set with batch-dated, template-shaped entries plus a testimonial re-used across states. Treat the work descriptions as unverified, confirm the company is trading and insured, and get any quote and warranty in writing before hiring.
New granite steps replaced our crumbling concrete ones. The edges are clean, support is solid, and it really stands out now.
We wanted to finish our basement but had to deal with occasional damp spots. Their waterproofing service gave us the green light to move forward confidently with renovations.
Mold started showing up behind a storage shelf, and we were shocked to find hidden moisture. Their basement waterproofing experts not only treated the mold but tackled the cause to stop it for good.
Water used to leak through the basement wall during heavy rain, creating puddles near the furnace. They found the source of the leak and applied a waterproof barrier that worked instantly.
I was impressed with their fast response and attention to detail. The waterproofing solution they installed has already stood up to two storms without a single issue. Definitely recommend them!
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