# LeBlanc Basement Waterproofing, LLC

**Trade:** Waterproofing / Foundation · **Address:** 85 Swanson Rd, Boxborough, MA 01719, USA · **Phone:** (978) 868-7619 · **Website:** https://www.leblancbasementwaterproofing.com/?utm_source=gbp&utm_medium=organic · **Languages:** English

**Rating: 4.3/5** (medium confidence) — from 24 reviews across 5 sources. A 0–5 star rating built from what customers and the public say (every review and mention weighted by where it was posted, how old, how detailed and how credible it is, shrunk toward a 3.5★ baseline when evidence is thin) plus what the record shows (Reddit recommendations or warnings, a registry-verified licence, how recently they were reviewed, customer work photos, BBB grade, negative news, a revoked licence). Positive record counts only as far as the reviews have earned it; penalties count in full. Confidence describes how much weighted evidence stands behind the number, never the number itself: low when fewer than about five normal reviews' worth of weight (or mentions only) support it, medium up to about twenty, high beyond that across at least two sources. An operator flag for a suspicious review pattern caps a rating at 3.5★ and marks it low.
100% of sentiment-scored reviews read net-positive. Last 6 months: 1 reviews, 0 negative.

## The honest read

LeBlanc Basement Waterproofing has built a large, consistent Boxborough-area following around one thing: fixing wet basements without oversell. Corey LeBlanc, a Massachusetts native with a background in construction and excavation, runs the family-owned company, and its Massachusetts home improvement contractor registration is active.

Across 24 reviews from 2022 through 2026 spanning Google and Angi — every one of them five stars — the same story plays out again and again: water in the basement, a consultation with Corey, and a crew (often named — Rick, Mike, Zack, Paxton, Nate and Sean turn up repeatedly) that shows up on time and finishes clean. In a 2024 review, a homeowner described Corey laying out several options during the consultation without any pressure, even pointing out that a cheaper service from another company might be enough — they chose the full job anyway, digging to the foundation and adding a barrier and drain pipes. In another 2024 review of a bigger project, a homeowner in an 1800s colonial described the crew digging the basement floor down another foot, installing a perimeter drain, structural supports and a new concrete floor before waterproofing the walls, calling the before-and-after "night and day."

The work itself is mostly French drains, sump pump systems, vapor barriers and perimeter drainage. In a 2024 review, one customer specifically praised the crew for protecting belongings with plastic barriers before cutting concrete, running a fan to clear dust, and vacuuming up daily. Several reviewers across 2024 and 2022 single out the office side too, mentioning a friendly scheduler named Crystal and quick response times when they were shopping quotes.

Two claims about how long the company has been around don't quite line up: its own site says Corey started the business in 2014 while also marketing "20+ years of experience" elsewhere on the site, and its Angi profile separately lists 19 years of experience — worth a clarifying question if longevity matters to you, though it doesn't change the strength of the recent work.

There's nothing negative on file across either platform, and the volume and consistency of detailed, specific praise — clean job sites, honest pricing conversations, and named crews who show up when promised — makes LeBlanc a strong option for a basement waterproofing project in the area.

**Strengths:**
- No-pressure consultations — options presented, cheaper alternatives disclosed
- Clean jobsite practices — dust barriers and daily cleanup on big digs
- Named, consistent crews — same techs show up across many jobs

**Where sources disagree:**
- The company's own site says it was founded in 2014 but a separate page markets "20+ years of experience," and its Angi profile lists 19 years of experience — the tenure claims don't agree with each other.

## Claims & citations

Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication.

- Massachusetts home improvement contractor registration verified active _(confidence: high)_
  - [State License Registry](https://contractorhub.mass.gov/s/hic-contractor-search) — “MA hic license 211827 verified active”
- Angi lists the company as an Angi Approved Pro and accredited member with a 5.0 rating from 3 reviews and 19 years of experience _(confidence: medium)_
  - [Angi](https://www.angi.com/companylist/us/ma/ashburnham/leblanc-basement-waterpoofing-llc-reviews-1.htm) — “Angi: 5.0★ from 3 ratings”
  - [Angi](https://www.angi.com/companylist/us/ma/ashburnham/leblanc-basement-waterpoofing-llc-reviews-1.htm) — “Angi: accredited / certified / member”
  - [Angi](https://www.angi.com/companylist/us/ma/ashburnham/leblanc-basement-waterpoofing-llc-reviews-1.htm) — “Listed certification: Angi Approved Pro”
  - [Angi](https://www.angi.com/companylist/us/ma/ashburnham/leblanc-basement-waterpoofing-llc-reviews-1.htm) — “Angi profile for LeBlanc Basement Waterpoofing, LLC (Ashburnham, MA) shows a 5.0 rating from 3 reviews, all strongly positive, plus 19 years…”
- Company says it was founded in 2014 by Corey LeBlanc as a family-owned business, while a separate page on its own site markets "20+ years of experience" _(confidence: medium)_
  - [Official Website](https://www.leblancbasementwaterproofing.com) — “Company history (self-reported): The site states Corey LeBlanc started the company in 2014, with customer satisfaction and integrity as its …”
  - [Official Website](https://www.leblancbasementwaterproofing.com) — “Ownership (self-reported): Family-owned and operated; led by CEO and Founder Corey LeBlanc, a Massachusetts native with a background in cons…”
- A 2024 reviewer described Corey presenting multiple options without pressure, including pointing out a cheaper alternative existed _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNieUlhX1NnEAE!2m1!1s0x0:0xe935772fb222f986!3m1!1s2@1:CIHM0ogKEICAgICbyIa_Sg%7C%7C?hl=en) — “5★ Corey and his team were great. We had water in our basement and during the consultation he provided several options never feeling any sor…”
- A 2024 reviewer described the crew using plastic barriers, dust fans and daily vacuuming while cutting concrete indoors _(confidence: high)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSURYdi1uMzZ3RRAB!2m1!1s0x0:0xe935772fb222f986!3m1!1s2@1:CIHM0ogKEICAgIDXv-n36wE%7C%7C?hl=en) — “5★ EVERYone at LeBlanc Basement Waterproofing is professional, educational, knowledgeable, friendly, respectful, neat and clean. The crew sh…”
- Multiple reviewers describe quick response times when shopping quotes and a helpful office scheduler _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURMeXR1bEhREAE!2m1!1s0x0:0xe935772fb222f986!3m1!1s2@1:CIHM0ogKEICAgIDLytulHQ%7C%7C?hl=en) — “5★ Highly recommend LeBlanc Basement Waterproofing! Had a great experience start to finish. When we were exploring quotes Corey was quick to…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNUcnNLZmFBEAE!2m1!1s0x0:0xe935772fb222f986!3m1!1s2@1:CIHM0ogKEICAgICTrsKfaA%7C%7C?hl=en) — “5★ If you are looking for a geat business that helps with water proofing your basement this is it.  When you call you will speak with Crysta…”
- Specializes in Waterproofing / Foundation _(confidence: high)_
  - [Official Website](https://www.leblancbasementwaterproofing.com) — “LeBlanc Basement Waterproofing is a Massachusetts-based, family-owned contractor offering interior and exterior basement waterproofing, craw…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2pseWEwTkxTREJWUVZnM1FrazFXamN0ZVc5WVFtYxAB!2m1!1s0x0:0xe935772fb222f986!3m1!1s2@1:CAIQACodChtycF9oOjlya0NLSDBVQVg3Qkk1WjcteW9YQmc%7C%7C?hl=en) — “5★ 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…”
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSURELTduQ053EAE!2m1!1s0x0:0xe935772fb222f986!3m1!1s2@1:CIHM0ogKEICAgIDD-7nCNw%7C%7C?hl=en) — “5★ We just had a new French drain, sump pump system and vapor barrier installed by LeBlanc Basement Waterproofing and couldn't be happier! T…”

## Ownership

- Identifies as family-owned — the business's own statement, not independently verified.

## License

Status: **active** (#211827, hic) — verified against the official MA state registry on 2026-07-01, never self-reported.
Re-check at the official registry: https://contractorhub.mass.gov/s/hic-contractor-search

## Sources

- [Google](https://www.google.com/maps/search/?api=1&query=LeBlanc%20Basement%20Waterproofing%2C%20LLC&query_place_id=ChIJryqhqFmT44kRhvkisi93Nek): 5.0★ from 23 ratings
- [Google Reviews](https://www.google.com/maps/search/?api=1&query=LeBlanc%20Basement%20Waterproofing%2C%20LLC&query_place_id=ChIJryqhqFmT44kRhvkisi93Nek): Listed on this source
- [Official Website](https://www.leblancbasementwaterproofing.com): Self-reported profile and service details
- [Angi](https://www.angi.com/companylist/us/ma/ashburnham/leblanc-basement-waterpoofing-llc-reviews-1.htm): Listed on this source
- [Angi](https://www.angi.com/companylist/us/ma/ashburnham/leblanc-basement-waterpoofing-llc-reviews-1.htm): 5.0★ from 3 ratings
- [Exa](https://crawlspacecosts.com/contractors/leblanc-basement-waterproofing-boxborough-ma/): 4 web mentions across the open web (each linked to its source)

## Recent reviews

- **5/5 · Google Reviews · Marc Carcio · 2026-04-07**: 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.
- **5/5 · Google Reviews · Erek Ostrowski · 2026-01-14**: 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 …
- **5/5 · Google Reviews · Karen I · 2024-11-01**: 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 cell…
- **5/5 · Google Reviews · Pamela Callahan · 2024-10-18**: 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 Ba…
- **5/5 · Google Reviews · Tom McGregor · 2024-09-13**: Rick and his team were excellent to work with and they did a great job!
- **5/5 · Google Reviews · Chris · 2024-07-22**: Corey and his team were great. We had water in our basement and during the consultation he provided several options never feeling any sort of pressure. He even said we may be fine with a cheaper service offered by other companies. Ultimately we wanted this to be a one time thing so we went the full …
- **5/5 · Google Reviews · Ashley Gerace · 2024-06-26**: Highly recommend LeBlanc Basement Waterproofing! Had a great experience start to finish. When we were exploring quotes Corey was quick to respond and set up a time to come look at our basement. When it was time for the work to be done his crew was great at asking any questions they had and answering…
- **5/5 · Google Reviews · Benjamin Difrancesco · 2024-06-24**: Corey was great to work with! He was responsive, thorough, and produced quality work that put our mind at ease. Absolutely recommend Corey and his crew!
- **5/5 · Google Reviews · Judy Gagnon · 2024-05-14**: If you are looking for a geat business that helps with water proofing your basement this is it.  When you call you will speak with Crystal, she is great and will set you up with an appointment, very friendly, great customer service.  They let you know when they will be there and call just before arr…
- **5/5 · Google Reviews · Paul H · 2024-05-14**: Great customer service. All the work was done professionally and in a timely manner. They went above and beyond to ensure we had what we needed to keep our home water free. Much appreciated!

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Data freshness: last scanned 2026-07-01T20:59:02.700Z.
Cite as: LeBlanc Basement Waterproofing, LLC — Tavlee (https://tavlee.com/contractor/leblanc-basement-waterproofing-llc-boxborough)
Source: https://tavlee.com/contractor/leblanc-basement-waterproofing-llc-boxborough