LeBlanc Basement Waterproofing, LLC
Local business · 85 Swanson Rd, Boxborough, MA 01719, USA
Their work
14 photosReach out
Call (978) 868-7619Visit websiteSee on GoogleYou reach them directly — we don’t take a cut.
Verified record
- MA HIC licenseVerified active
- Not rated by the BBB
- 2 reviews in the last 6 monthsNo negatives
- 14 work photos
Highlights
- Full basement rebuilds — recent review describes dig-out, drains, and structural repair
- Licensed and verified — active Massachusetts HIC license on record
- Top ratings — 5.0 on both Google (23) and Angi (3)
- Angi Approved Pro — accredited member badge on its profile
- Experience claims conflict — founded 2014 yet markets 20+ years experience
- Third-party reviews thin — only 3 ratings posted on Angi
LeBlanc Basement Waterproofing works out of Boxborough, tackling the kind of basement problems people put off calling anyone about — cracked foundations, water intrusion, crawl spaces nobody wants to crawl into. The company says founder Corey LeBlanc started it in 2014 after a background in construction and excavation, and his name shows up in nearly every review. The clearest recent example is a homeowner in an 1800s colonial whose basement ceiling was too low to stand under. Corey's crew dug the floor down another foot, installed a perimeter drain and structural supports, poured a new concrete floor, and waterproofed the walls — a full structural rebuild, not a quick sealant job. Another recent customer calls Corey knowledgeable and says they'd call the company again for any basement issue. On Google the rating sits at 5.0 from 23 ratings; on Angi it's 5.0 from 3, where the company also carries an Approved Pro badge. Its Massachusetts Home Improvement Contractor license (#211827) is active and verified. One thing worth asking about directly: the company's own site says it started in 2014, roughly a decade ago, but elsewhere markets '20+ years of experience,' and Angi lists 19 years — those numbers don't line up, so it's worth clarifying who's actually running the crew and how long they've done this work. For a homeowner dealing with a wet or unusable basement in the Boxborough area, this looks like an outfit built for the structural end of the job — dig-outs, drainage, foundation repair — rather than a quick patch. Confirm the crew and scope for your specific project before signing, since so much of the reputation rides on one name.
Read the comments
Most recent comments
- 5.0Apr 7, 2026
I can’t say enough about Leblanc Basement Waterproofing! They do great work. Corey was exceptionally helpful and knowledgeable. And I absolutely would call them again with a basement issue.
— Marc CarcioView on Google Reviews ↗ - 5.0Jan 14, 2026
LeBlanc did an amazing job with our basement. In our 1800's colonial, the basement ceilings were so low that I couldn't stand up without hitting my head. Corey and his excellent crew dug the floor down another foot, installed a perimeter drain, structural supports, and new concrete floor—and then waterproofed the walls. The difference is night and day. The crew were highly skilled and the whole experience was very professional from day one. Highly recommend LeBlanc!
— Erek OstrowskiView on Google Reviews ↗ - 5.0Nov 1, 2024
EVERYone at LeBlanc Basement Waterproofing is professional, educational, knowledgeable, friendly, respectful, neat and clean. The crew showed up exactly when they said they would and they kept me informed during the job. They answered my questions. Before they cut anything, they went through my cellar and put up plastic barriers to isolate the upstairs and to keep the dust off my belongings. They jackhammered and cut a lot of concrete and every day, they used a fan to evacuate dust and they swept up and vacuumed up before leaving. The install was exactly as advertised; nice and neat and clean and well done.<br>If I had another cellar to waterproof, there is NO QUESTION that I would choose Corey and his crew again!<br>If I could give them 20 stars and 50 thumbs up, I would!<br>I HIGHLY RECOMMEND LEBLANC BASEMENT WATERPROOFING FOR THEIR EXPERTISE, USE OF GREAT PRODUCTS AND FABULOUS INSTALL, PLUS THEY WERE VERY EASY TO WORK WITH.
— Karen IView on Google Reviews ↗ - 5.0Oct 18, 2024
Mike and Zack were amazing! They were professional, personable, courteous and worked so hard all day! They work extremely well together and politely declined breakfast and lunch- they came well prepared. They did first class work fixing my basement and I give my highest recommendation for LeBlanc Basement Waterproofing - you will be happy!<br>The entire process was easy and Corey is great to work with. Very responsive and answers all questions. 10 star review
— Pamela CallahanView on Google Reviews ↗ - 5.0Sep 13, 2024
Rick and his team were excellent to work with and they did a great job!
— Tom McGregorView on Google Reviews ↗
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Update history
Added 24 new comments, added 14 new photos, verified active license, established rating 4.2
- confirmed against the state license registry
- behind the score: Experience claims conflict — founded 2014 yet markets 20+ years experience