Photo: marylandplumbingservices.com
Gregory Mahon
Master Plumber / Gas Fitter | Mahon Plumbing. Curtis Bay / Baltimore.
Curtis Bay / Baltimore, Maryland
Trust & verification
Master Plumber / Gas Fitter
Gregory Paul Mahon
Mahon Plumbing Inc.
- License
- Maryland Master Plumber/Gas Fitter #11839 — GREGORY PAUL MAHON
- Board status
- Active · Expires 2027-07-20
- Board lookup
- Maryland plumbing license lookup
- Verified
- 2026-09-01
- Google Maps
- 4.9 stars · 280 reviews · as of 2026-09-01
- Shop
- Mahon Plumbing Inc. · Curtis Bay / Baltimore, MD · (410) 766-8566 · marylandplumbingservices.com
This page is not endorsed by, affiliated with, or sponsored by Gregory Mahon or Mahon Plumbing.
Frequently asked questions
Is Gregory Mahon a licensed plumber in Maryland?
Yes. Maryland Master Plumber/Gas Fitter #11839, Active, expires 2027-07-20.
What is Mahon Plumbing's Google rating?
On Google Maps as of 2026-09-01, the shop is 4.9 stars from 280 reviews.
How do I contact them?
Call (410) 766-8566 or use https://www.marylandplumbingservices.com/.
Does BestMasterPlumber.com employ Gregory Mahon?
No. This is an editorial profile and is not endorsed by, affiliated with, or sponsored by Gregory Mahon or Mahon Plumbing.
Why BestMasterPlumber.com features Gregory Mahon in Maryland
Maryland’s Master Plumber/Gas Fitter license is the state’s top plumbing credential. Gregory Paul Mahon holds that card and runs Mahon Plumbing, Inc. in Curtis Bay / Baltimore.
The shop has been a Maryland family company since 1994.
On live Google Maps as of 2026-09-01, Mahon Plumbing stands at 4.9 stars from 280 reviews. Call (410) 766-8566.
About Gregory Mahon
Gregory Paul Mahon is a Maryland Master Plumber/Gas Fitter and the licensed name behind Mahon Plumbing, Inc. The shop is at 6824 Fort Smallwood Rd Ste. A, Baltimore, MD 21226. Call (410) 766-8566. Email Office@mahonplumbing.com.
Mahon Plumbing has offered plumbing, gas, and utility work to residents and businesses in Anne Arundel County, Baltimore County and City, Howard County, Queen Anne’s County, and the surrounding Maryland areas since 1994. The published work includes sewer and drain service, water mains, water heaters, and same-day service.
The shop YouTube channel is @mahonplumbinginc.4450. The promo is “Mahon Plumbing - Experience That Shows” — a promo, not job footage.
Disclaimer: This website is not endorsed by, affiliated with, or sponsored by Gregory Mahon or Mahon Plumbing, Inc.
Shop photos
Photo: marylandplumbingservices.com
Photo: marylandplumbingservices.com
Specialties
Residential and commercial plumbing
Gas repair and installation
Sewer and drain service
Water main and waterline replacement
Water heater repair and replacement
Utility repair and installation
Credentials & reviews
Maryland Master Plumber / Gas Fitter
11839. GREGORY PAUL MAHON. MASTER PLUMBER/GAS FITTER. Active. Insured. Expires 2027-07-20.
BBB
A+ — not accredited.
Google (live Maps, 2026-09-01)
4.9 stars from 280 reviews.
Angi
4.8 stars from 183 reviews — Angi, not Google.