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The 10 Best Basement Waterproofing Services in Boston (2026)
Basement waterproofing is a common concern across Boston’s neighborhoods, where older foundations and seasonal storms can mean damp basements and costly repairs. This list is built from Google review data and updated for 2026 using a Bayesian-style score that weights average ratings by the number of reviews, so businesses with many positive reviews rise to the top. We focus on firms visible in Greater Boston and nearby towns, highlighting companies with consistently high feedback from customers. Use this guide as a starting point for local options and to help frame questions when you contact contractors.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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Drycrete Waterproofing
Drycrete Waterproofing tops our list because it combines a perfect 5.0 Google rating with a very large review count—727 reviews—giving it clear, sustained customer visibility. It is listed on Google as a ‘Waterproofing service,’ and that combination of rating and volume is why it ranks first in our 2026 roundup. The Bayesian weighting used in this ranking favors businesses that pair high scores with substantial customer feedback.
The full ranking
Mrw Contractors-Masonry Restoration & Waterproofing
Mrw Contractors—Masonry Restoration & Waterproofing has a 5.0 rating based on 185 Google reviews and is categorized as a masonry contractor in Quincy, MA.
185 reviews
StoneBase Masonry – Basement & Foundation Repair Specialist
StoneBase Masonry is listed as a masonry contractor with a perfect 5.0 from 117 reviews and appears on Google in Auburndale, MA.
117 reviews
Attack A Crack
Attack A Crack is shown as a concrete contractor with a 5.0 rating from 86 reviews; its Google address is in Quincy, MA.
86 reviews
Fenway Masonry & Waterproofing, Chimney Repair, Basement Repair Boston
Fenway Masonry & Waterproofing, Chimney Repair, Basement Repair Boston carries a 5.0 Google rating across 74 reviews and is listed in Boston, MA.
74 reviews
Harborline Foundation & Brickwork
Harborline Foundation & Brickwork has a 5.0 rating from 69 reviews on Google and is categorized as a masonry contractor; no public address is listed on its Google profile.
69 reviews
Metro masonry & waterproofing
Metro masonry & waterproofing appears as a masonry contractor with a 5.0 score tied to 67 reviews and is listed in Boston, MA.
67 reviews
LaPorte Masonry & Waterproofing Inc.
LaPorte Masonry & Waterproofing Inc. holds a 5.0 rating from 36 reviews, is listed as a masonry contractor, and shows an East Boston address on Google.
36 reviews
Bruno Guerriero Construction Inc.
Bruno Guerriero Construction Inc. is categorized as a foundation contractor with a 5.0 Google rating from 31 reviews and is listed in Boston, MA.
31 reviews
Knights Masonry & Foundation Waterproofing
Knights Masonry & Foundation Waterproofing has a 5.0 rating based on 28 Google reviews and is listed as a masonry contractor in Boston, MA.
28 reviews
Frequently asked questions
How should I choose a basement waterproofing company in Boston?
Look for companies with strong reviewer volume and consistently high ratings, clear contact information, and relevant Google categories like ‘waterproofing’ or ‘masonry.’ Check for photos of past work, read a mix of recent reviews, and ask the company for references, a written estimate, and details about warranties before hiring.
What does basement waterproofing typically involve?
Waterproofing can include interior drainage systems, sealing cracks, external drainage or grading work, and foundation repairs depending on the source of moisture. A site visit is needed to diagnose whether the issue is surface water, groundwater, plumbing, or structural and to determine an appropriate solution.
What should I check before hiring a contractor?
Confirm licensing and insurance where applicable, get a written estimate that explains the scope of work and materials, and ask about anticipated timelines and any permits required. Also verify warranty terms and whether follow-up inspections are included in the price.
How is this ‘best of’ ranking created?
This list is generated from Google review data and updated for 2026 using a Bayesian-style approach that weights average star ratings by the number of reviews. That method balances perfect scores with review volume so businesses with many positive reviews rank higher than those with fewer.