---
title: "Knox Plumbing & Heating Co"
description: "Knox Plumbing & Heating Co is a plumbing business in Shirley, MA that says it has been in business for 21 years. Thomas Knox's MA plumber licence 13781-PL-"
doc_version: "2026-09-28"
last_updated: "2026-09-28"
---

# Knox Plumbing & Heating Co

**Trade:** Plumbing · **Address:** Shirley, MA 01464 · **Phone:** (978) 425-4444 · **Website:** https://knoxplumbingandheating.com/ · **Languages:** English

**Rating: not yet scored** — 0 reviews across 5 sources is too little evidence for an honest number.

## The honest read

Knox Plumbing & Heating Co is a plumbing business in Shirley, MA that says it has been in business for 21 years. Thomas Knox's MA plumber licence 13781-PL-M is active on the state registry, and Thomas P Knox's NH plumber licence 4368 is active on the New Hampshire registry.

**Strengths:**
- Plumbing licences — active on the MA and NH state registries

## Claims & citations

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

- MA plumber licence 13781-PL-M (Thomas Knox), active on the state registry _(confidence: high)_
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 13781-PL-M registry-verified active — registry holder of record: Thomas Knox”
- NH plumber licence 4368 (Thomas P Knox), active on the state registry _(confidence: high)_
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH plumber license 4368 registry-verified active — registry holder of record: Thomas P Knox”
- Says it has been in business for 21 years _(confidence: medium)_
  - [Official Website](https://knoxplumbingandheating.com) — “Self-reported 21 years in business”
- Specializes in Plumbing _(confidence: high)_
  - [State License Registry](https://forms.nh.gov/licenseverification/) — “NH plumber license 4368 registry-verified active — registry holder of record: Thomas P Knox”
  - [State License Registry](https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page) — “MA plumber license 13781-PL-M registry-verified active — registry holder of record: Thomas Knox”

## License

Status: **active** (#13781-PL-M, plumber) — verified against the official MA state registry on 2026-09-26, never self-reported.
Re-check at the official registry: https://occupationallicensingandpermitting.mass.gov/madol/s/license-search-page

## Sources

- [Google](https://www.google.com/maps/search/?api=1&query=Knox%20Plumbing%20%26%20Heating%20Co&query_place_id=ChIJD3X81-vr44kR_R063t7cbhI): Listed on this source
- [Official Website](https://knoxplumbingandheating.com): 21 yrs in business · Self-reported profile and service details
- [Exa](https://vimarsana.com/review/knox-plumbing-heating-company-middlesex-massachusetts): 0 web mentions across the open web (each linked to its source)
- [Procore Construction Network](https://network.procore.com/p/knox-plumbing-and-heating-shirley): Listed on this source
- [Better Business Bureau](https://www.bbb.org/us/ma/shirley/profile/plumber/knox-plumbing-heating-company-llc-0261-330513): Listed on this source

---

Data freshness: last scanned 2026-09-27T18:03:15.474Z.
Cite as: Knox Plumbing & Heating Co — Tavlee (https://tavlee.com/contractor/knox-plumbing-and-heating-co-shirley)
Source: https://tavlee.com/contractor/knox-plumbing-and-heating-co-shirley

## Sitemap

[Full site index](https://tavlee.com/sitemap.md)