---
title: "Diamond Hill Plumbing & Heating LLC"
description: "Diamond Hill Plumbing & Heating LLC is a plumbing business tied to Maine plumber license MS90017005, held by Jose C. Serra and active on the state registry"
doc_version: "2026-11-02"
last_updated: "2026-11-02"
---

# Diamond Hill Plumbing & Heating LLC

**Trade:** Plumbing · **Address:** 162 Diamond Hill Rd, North Berwick, ME 03906 · **Phone:** (207) 252-4627 · **Languages:** English

**Rating: 2.8/5** (low confidence) — from 2 reviews across 3 sources.

## The honest read

Diamond Hill Plumbing & Heating LLC is a plumbing business tied to Maine plumber license MS90017005, held by Jose C. Serra and active on the state registry. On Google it holds 4.6 stars from 10 ratings.

A 2022 Google customer called it the best plumbing outfit in York county and said they would not use any other plumber. A 2022 customer said they left several messages with Carlos over several weeks and never received an answer, even though a friend had recommended the business.

**Strengths:**
- A loyal customer — a 2022 reviewer said they would use no other plumber

**Concerns:**
- Unreturned messages — a 2022 customer said calls went unanswered for weeks

## Claims & citations

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

- Maine plumber license MS90017005, held by Jose C. Serra, is active on the state registry _(confidence: high)_
  - [State License Registry](https://www.pfr.maine.gov/ALMSOnline/ALMSQuery/SearchIndividual.aspx) — “ME plumber license MS90017005 registry-verified active — registry holder of record: JOSE C. SERRA”
- 4.6 stars from 10 Google ratings _(confidence: high)_
  - [Google](https://www.google.com/maps/search/?api=1&query=Diamond%20Hill%20Plumbing%20%26%20Heating%20LLC&query_place_id=ChIJuzIHDIKh4okR-kNlZ8Cq3XE) — “Google: 4.6★ from 10 ratings”
- A 2022 customer said they would not use any other plumber _(confidence: low)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNPcWJ1cnhnRRAB!2m1!1s0x0:0x71ddaac0676543fa!3m1!1s2@1:CIHM0ogKEICAgICOqburxgE%7C%7C?hl=en-US) — “5★ Diamond Hill is the best plumbing outfit in York county! I wouldn’t use any other plumber!”
- A 2022 customer said several messages left with Carlos over several weeks went unanswered _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChZDSUhNMG9nS0VJQ0FnSUNPeWR1cklREAE!2m1!1s0x0:0x71ddaac0676543fa!3m1!1s2@1:CIHM0ogKEICAgICOydurIQ%7C%7C?hl=en-US) — “1★ I have left several messages with Carlos over several weeks and never received an answer. I get that you're busy, at least call me back a…”
- Specializes in Plumbing _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnSUNPcWJ1cnhnRRAB!2m1!1s0x0:0x71ddaac0676543fa!3m1!1s2@1:CIHM0ogKEICAgICOqburxgE%7C%7C?hl=en-US) — “5★ Diamond Hill is the best plumbing outfit in York county! I wouldn’t use any other plumber!”
  - [State License Registry](https://www.pfr.maine.gov/ALMSOnline/ALMSQuery/SearchIndividual.aspx) — “ME plumber license MS90017005 registry-verified active — registry holder of record: JOSE C. SERRA”

## License

Status: **active** (#MS90017005, plumber) — verified against the official ME state registry on 2026-10-30, never self-reported.
Re-check at the official registry: https://www.pfr.maine.gov/ALMSOnline/ALMSQuery/SearchIndividual.aspx

## Sources

- [Google](https://www.google.com/maps/search/?api=1&query=Diamond%20Hill%20Plumbing%20%26%20Heating%20LLC&query_place_id=ChIJuzIHDIKh4okR-kNlZ8Cq3XE): 4.6★ from 10 ratings
- [Google Reviews](https://www.google.com/maps/search/?api=1&query=Diamond%20Hill%20Plumbing%20%26%20Heating%20LLC&query_place_id=ChIJuzIHDIKh4okR-kNlZ8Cq3XE): Listed on this source
- [Local News](https://www.theplumbingdirectory.com/north-berwick/plumber/diamond-hill-plumbing-heating-llc): Listed on this source

## Recent reviews

- **5/5 · Google Reviews · David Carreira · 2022-06-13**: Diamond Hill is the best plumbing outfit in York county! I wouldn’t use any other plumber!
- **1/5 · Google Reviews · CrossFit207 · 2022-06-13**: I have left several messages with Carlos over several weeks and never received an answer. I get that you're busy, at least call me back and tell me. Especially since you were recommended by a friend.

---

Data freshness: last scanned 2026-10-30T19:03:58.109Z.
Cite as: Diamond Hill Plumbing & Heating LLC — Tavlee (https://tavlee.com/contractor/diamond-hill-plumbing-and-heating-llc-north-berwick)
Source: https://tavlee.com/contractor/diamond-hill-plumbing-and-heating-llc-north-berwick

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