# Hennigan's Plumbing & Heating, LLC

**Trade:** Plumbing · **Address:** 6 Commons Dr, Carver, MA 02330 · **Phone:** (774) 521-6032 · **Languages:** English

**Rating: 3.5/5** (low confidence) — from 0 reviews across 2 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.

## The honest read

Hennigan's Plumbing & Heating, LLC is a small plumbing and heating company registered at Commons Drive in Carver, working the South Shore and out onto the Cape. The Massachusetts registry verifies Plumbing Business licence 5007-PL-C as active and held in the company's own name.

The documented work is thin but real. BuildZoom carries a single permitted job - a 2017 kitchen renovation in Braintree where the plumber replaced a leaking drain and water piping and capped it off for new base cabinets - and lists mechanical, sheet metal and HVAC work alongside plumbing.

The strongest third-party signal is word of mouth rather than a review: on Nextdoor in April 2025, a Centerville neighbour answering someone's request for a plumber replied that they highly recommend Keagan Hennigan and gave the company's phone number. That is a direct personal recommendation, though it describes no particular job.

Worth asking about before booking: no review site carries a single review of this business - BuildZoom says so plainly - so ask for references and confirm the licence number with the state's plumbing board, which lists it in the company's name.

A reasonable fit for a homeowner who wants a licensed small plumbing outfit for repairs, heating work or a kitchen or bath change, and who is comfortable relying on personal references rather than an online rating.

**Strengths:**
- Verified licence — active Massachusetts plumbing registration in the company name
- Neighbour recommendation — Nextdoor reply names the owner directly
- Kitchen plumbing — permit records a drain and supply replacement

**Concerns:**
- No reviews — no customer account on any source on file
- Single permit — only one permitted job in the public record
- Unverified HVAC — sheet metal and HVAC rest on a directory list

**Where sources disagree:**
- The BuildZoom score of 90 is stated by BuildZoom itself to mean only that the business is licensed or registered, and must not be read as customer sentiment; the same page reports no reviews at all.
- BuildZoom's licence line shows a May 2026 expiry from its last check, while the state registry shows the licence active as verified today.

## Claims & citations

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

- Massachusetts Plumbing Business licence 5007-PL-C is registry-verified active, held by Hennigan's Plumbing & Heating LLC. _(confidence: high)_
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 5007-PL-C registry-verified active — registry holder of record: Hennigan's Plumbing & Heating LLC”
- A Centerville neighbour on Nextdoor in April 2025, replying to a request for plumber recommendations, said they highly recommend Keagan Hennigan and gave the business's phone number. _(confidence: medium)_
  - [Nextdoor](https://nextdoor.com/p/kzwYssdW9ZyH) — “Nextdoor (Centerville, MA) — Hi Micheline!  I highly recommend Keagan Hennigan 774-521-6032”
- The one permitted job on file is a 2017 Braintree kitchen renovation in which a leaking drain and water piping were replaced and capped for new base cabinets. _(confidence: medium)_
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “1 project(s) shown on BuildZoom”
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “BuildZoom profile for Hennigan's plumbing & Heating LLC of Carver, MA: one permitted project on file, a 2017 kitchen plumbing renovation in …”
- BuildZoom lists the trades as mechanical work, sheet metal work and HVAC alongside plumbing. _(confidence: low)_
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “Services offered (BuildZoom): Mechanical Work, Sheet Metal Work, HVAC”
- No customer reviews exist on any source on file - BuildZoom states it has received none - so there is no rated track record. _(confidence: high)_
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “BuildZoom profile for Hennigan's plumbing & Heating LLC of Carver, MA: one permitted project on file, a 2017 kitchen plumbing renovation in …”
- Only one permitted project appears in the public permit record, so the documented work history is very small. _(confidence: medium)_
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “1 project(s) shown on BuildZoom”
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “BuildZoom profile for Hennigan's plumbing & Heating LLC of Carver, MA: one permitted project on file, a 2017 kitchen plumbing renovation in …”
- The read rests on one direct Nextdoor recommendation naming the owner and a verified active state plumbing licence, against an otherwise empty review and permit record. _(confidence: low)_
  - [Nextdoor](https://nextdoor.com/p/kzwYssdW9ZyH) — “Nextdoor (Centerville, MA) — Hi Micheline!  I highly recommend Keagan Hennigan 774-521-6032”
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “BuildZoom profile for Hennigan's plumbing & Heating LLC of Carver, MA: one permitted project on file, a 2017 kitchen plumbing renovation in …”
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 5007-PL-C registry-verified active — registry holder of record: Hennigan's Plumbing & Heating LLC”
- Specializes in Plumbing _(confidence: high)_
  - [Nextdoor](https://nextdoor.com/p/kzwYssdW9ZyH) — “Nextdoor (Centerville, MA) — Hi Micheline!  I highly recommend Keagan Hennigan 774-521-6032”
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “BuildZoom profile for Hennigan's plumbing & Heating LLC of Carver, MA: one permitted project on file, a 2017 kitchen plumbing renovation in …”
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 5007-PL-C registry-verified active — registry holder of record: Hennigan's Plumbing & Heating LLC”
- Also offers HVAC / Heating & Cooling _(confidence: low)_
  - [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc) — “Services offered (BuildZoom): Mechanical Work, Sheet Metal Work, HVAC”

## License

Status: **active** (#5007-PL-C, plumber) — verified against the official MA state registry on 2026-08-20, never self-reported.
Re-check at the official registry: https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page

## Sources

- [Exa](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc): 0 web mentions across the open web (each linked to its source)
- [BuildZoom](https://www.buildzoom.com/contractor/hennigans-plumbing-heating-llc): Listed on this source

## Mentions

Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding.

- “Hi Micheline!  I highly recommend Keagan Hennigan 774-521-6032” — nextdoor.com (2025-04-27) — https://nextdoor.com/p/kzwYssdW9ZyH

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Data freshness: last scanned 2026-08-20T07:42:29.690Z.
Cite as: Hennigan's Plumbing & Heating, LLC — Tavlee (https://tavlee.com/contractor/hennigan-s-plumbing-and-heating-llc-carver)
Source: https://tavlee.com/contractor/hennigan-s-plumbing-and-heating-llc-carver