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Some customers have used Trethewey Brothers for 26, 30 or 32 years. The Roslindale plumbing and heating company says it was founded in 1902 and has stayed family-run from the same location for five generations. Its site lists Mike Flanagan and Bob Trethewey as co-owners, and it shows 4.7★ from 263 Google ratings. Old houses and second opinions are a big part of the work. An April 2026 customer who has relied on TBros for 32 years said that when the complicated multi-zone heating in their 104-year-old Victorian went haywire, the crew found three faulty zone heads. In an October 2025 review, a customer who was told by another plumber they needed a $15,000 boiler said TBros fixed a leaking valve instead for $800, and a November 2025 customer said Paul repaired a shower mixing valve another firm had given up on. A May 2024 Reddit commenter in r/boston said the company insisted on a permit and that they paid a premium. Other customers describe problems. In a December 2024 review, a customer said technicians twice drained an overfilled steam boiler and charged for each visit without fixing the cause, which the customer later traced to a dirty low-water cutoff probe. A February 2025 customer in their eighties said that when their heat went out on a Saturday they were told the work would wait until Monday, and they spent a night in a hotel with the house at 45 degrees; the plumber then arrived Monday with the wrong part, the fix slipped to Tuesday, and they were charged $190 for that visit. A December 2025 customer said a dishwasher was installed without being anchored and its upper rack was smashed from crashing out. A June 2026 customer said a phone quote came with caveats for extra charges and a $95 fee just to get an estimate, so they went elsewhere. In January 2024, a customer asking about a new water heater said no one replied for more than a week after they sent the photos requested, and in January 2022 a customer said the receptionist yelled at them and a manager hung up.
“I used Trethewey Brothers. They insisted on a permit. You know why? Because they don't suck. Did I pay a premium? Yes I did. And I'm okay with that.”
TBros responded quickly and provided excellent service.
Juan was flexible with my work schedule, pleasant polite and professional. He was also so knowledgeable about what needed to be done!!! I was very impressed
Always professional. Truly exceptional service and company
T-bros came right away and the fellows were experienced, kind and had a good sense of humor. Wish I had called them 2 years ago instead of living with a broken guest bathroom!!
I had your employee come to fix a leak from the hot water shower valve back in February. 3 weeks later I requested someone to return to fix the same hot water turn off because of a loud screech that happened when it was fixed the first time. Your employee came and couldn’t fix the problem. Fast forward 4 months I called for the compression washer to be replaced again because it failed. I considered calling Sila for my plumbing needs but didn’t. I. Stay with you because of the trust I continue to have
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Certified attributes are verified against the public registry. Others are the business's own statement.
2 changes recorded — last scanned Jul 1, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from TBros - Trethewey Brothers Inc. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$290 – $710
Typical plumbing job around $500
Transparent diagnostics5.0
Quoted price holds5.0
Midnight and weekend help5.0
Broad plumbing and HVAC range5.0
Rapid response5.0
Repeat, years-long customers5.0