Verified record
In an April 2025 Google review, a customer with a minor gas leak said G M Walsh Plumbing & Heating had a repairman there within a couple of hours and charged a third of what a bigger company quoted the same day. That customer called the dispatcher gruff and a bit sarcastic, but said she got them help fast. BBB says the Watertown shop was established in 1980, employs four to six people and is owned by Gregory M. Walsh. It holds a 4.5 from 10 Google ratings. Gregory M Walsh's Massachusetts plumber license, 9777-PL-M, is active. BuildZoom shows 240 permitted projects and lists HIC #186945 and construction supervisor #CS-098332. In a November 2024 review, a customer said Greg and his team fixed a toilet the original contractor had installed badly, repairing the floor and fitting a proper flange first, and billed a very reasonable amount. A March 2026 one-star reviewer wrote: "mean old lady not open to talk."
mean old lady not open to talk
Awesome experience! The dispatcher on the phone was a bit gruff and kinda sarcastic, but that's new england charm right? But stick with the dispatcher! She really did us a favor and got us a repairman in just a couple of hours. The guy fixed a minor gas leak. He was very communicative and just a nice guy. And in the end, it cost 1/3 (yes, one third) of what a bigger company quoted me for the same work earlier that day! Highly recommended and will be our go-to company for routine jobs.
Greg and his team corrected a long-standing problem with my bathroom toilet. The toilet wasn't installed properly by the original contractor. Greg walked me through the whole process in a calm clear voice. Folks I am a very picky person who tends to hover over service people, and this has been a problem in the past. Greg and his team were unfazed by my hovering and constant questioning. They were VERY patient with me and answered every question. They had to repair the floor and install a proper flange before they could install the toilet. The work took four hours but when done the job turned out absolutely perfect! I firmly believe that no other plumber would have done what Greg did. I received the bill a few days later and it was VERY reasonable. I told this story to a couple of friends, and they responded with "Oh we know Greg he is great!" I also recently learned that he donates to charities in our community. That's why I will always use Greg Walsh Plumbing and Heating, and you should too!
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1 change recorded — last scanned Sep 8, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from G M Walsh Plumbing & Heating. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
20-year-old heating and cooling systems replaced in seven workdays3.9
Active license3.3
Fast emergency response2.9
The plumber one Reddit commenter calls every time2.4
25-year customer relationship3.6
Blizzard and Friday-night emergency calls3.4
