Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Duffy Roofing Co., Inc.. Use it to sanity-check bids, then get the real number in writing.
A square is 100 sq ft of roof surface — bigger than the floor plan because of pitch and overhangs.
Estimated range
$9,000 – $18,600
Typical roofing project around $13,800
Duffy Roofing works out of Dorchester Center, and the reviews keep landing on the same kind of job: a steep, multi-story triple-decker or a century-old home with a slate roof and copper gutters that most crews won't touch. Brett, Garrett and Trevor Duffy show up by name across the record, working directly with homeowners rather than handing the job to a sales layer. The written record runs from 2022 through mid-2026 — 55 reviews across five sources, nearly all five stars, with Google itself showing 4.8★ from 87 ratings. Reviewers keep coming back: one homeowner described 15 years of slate roof repairs in a 2024 review, another had used Duffy for over a decade on complicated slate and copper work, and a third was on a third job with the company — two repairs first, then a full roof, in a 2023 review. Speed and honesty stand out in the specifics. In a 2024 review, one homeowner switched to Duffy after a previous slate roofer kept finding new, more expensive work to do; Duffy gave what read as a more honest assessment and serviced the whole roof instead. In a 2023 review, another customer said Duffy fixed a leak that several prior roofers had failed to stop for good. Full roof replacements on large or multi-building properties routinely finish in a single day — sometimes with two crews working at once — and in a 2024 review the crew used drone photography to flag a problem on a neighbor's property that wasn't visible from the ground. What to know before calling: this is a roofing specialist first. Gutter and fascia work turns up alongside roof jobs — replacing a rotted fascia and gutter in a 2022 Milton review, doing gutters alongside a roof on an 1875 Victorian in a 2023 review — but it isn't the main draw. Its Massachusetts home improvement contractor registration is active. For a roof job on an older or architecturally tricky house — slate, steep pitches, tight urban lots — the track record here runs deep and consistent, with the same handful of names showing up call after call.
As we all know getting a reputable roof installer company with a market saturated with a million roofing companies is no easy task! I own triple decker in Dorchester and a flat rubber roof which was in need of replacement. I got about 6 different estimates and ended up choosing Duffy Roofing. I chose Duffy roofing because I felt like they were the most honest, reputable local company that has been around for years and stand behind their work. Garrett was amazing he was very communicative with all my needs and never pushy. The entire job was flawless from start to finish. Remember it not just about the quality of materials used but also the correct way of installation of what matters most in roofing!!!
Incredible service with reasonable rate. I was worried about everything but Brett assured me and all went well . I would use them again without hesitation.
I don’t often write reviews, but for Duffy roofing I need to make an exception. Fantastic quality work. Been using them for all my properties for the past few years, and have been indispensable for me during this winter storm surge. The only roofing company in Massachusetts I would ever recommend. 5star
Start with the best in Boston! Why call the rest first? Brett from Duffy Roofing clearly communicated the job and answered any questions I had. His team treated my property with the utmost respect and care. The job was completed in a timely manner. Quality workmanship and material cost more but why have problems later? Call Duffy first and last!
We had our triple decker roof repaired by Duffy as well as an external garage and deck. We worked with Garrett Duffy and couldn't be happier - despite inclement weather pushing the timeline back, Duffy was extremely communicative and when they were able to work did an excellent job. When we saw an issue with drainage / pooling they promptly took care of it within 24 hours. We received 3 quotes from licensed contractors and Duffy fell in the middle so we also felt we paid a fair price - we'll be keeping them in mind if we ever need roofing services again!
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Certified attributes are verified against the public registry. Others are the business's own statement.
Established 4.6 rating
Same-day help after trees, ice dams, storms5.0
Free fixes, even a decade later5.0
Same-day ice dam leak response4.9
Kitchen renovation4.7
Full roof jobs finished in a day4.6
WBE, MBE & DBE certified3.6
Foundation repairs4.7
Roof and siding jobs3.2