Verified record
Thor Construction is a Medford, Massachusetts general contractor that BBB records as operating under the same ownership since 1996 — 30 years in the building, remodeling and roofing business, with siding and gutter work called out as a specialty alongside its own roofing crews. The written record is thin but old rather than absent: the one review on file, from 2012, describes a storm-damaged roof getting a same-day look — someone from Thor inspected the leak within an hour of the call and gave a plain read on what needed replacing versus what still had years left. Google shows a single 5-star rating alongside it. Before booking, it's worth asking for something more recent — there's no written feedback newer than that 2012 account to go on. BuildZoom lists an active Massachusetts Construction Supervisor license for the company, though a separate Home Improvement Contractor registration it once held has since gone inactive — worth confirming directly if the job calls for that registration. For a straightforward roofing, siding or gutter job from a long-running local outfit, Thor Construction has a real track record to point to — just ask for current references, since there isn't much written about their work past that one storm season fourteen years ago.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Thor Construction. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
We called Thor Construction from a recommendation. Our roof had sprung a leak in a bad storm and Bill from Thor came out within an hour of my calling. He inspected it and told me the back, dormered portion needed to be redone. The rest of the roof had a good 4 or 5 years left, he said. He recommended rigid insulation, adding ventilation that was non-existent, and going with a rubber membrane. They did the work within a weeks time as promised and in one day! We checked out the roof ourselves and everything looked immaculate. They flashed the chimney up about 6 inches, and added all vents as promised. There was no damage or debris left behind either. The quote they gave was right on as well. Bill even did a drive by the next day to check it out--the only way I knew is that he called to say there was a piece of roofing that slipped onto the front of the roof that they had missed. He said he'd come by in a day with a ladder to get it down. Good follow up too. I'd definitely recommend them, and definitely use them again!
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2 changes recorded — last scanned Sep 9, 2026.
Shed craftsmanship5.0
Porch and deck rebuilds4.8
Fixed storm damage for free4.6
19 permitted projects on fileNot yet rated
Repeat customer3.9