Local business · Winthrop, MALocal business · 23 Seaview Ave, Winthrop, MA
Verified record
BuildZoom gives George F Sennott a score of 93, built on a permit history of 121 projects — most of them building-envelope work: EPDM and slate roof replacement, roof decks, waterproofing at planters and courtyards, sealant and masonry repair, and fire-damage roof rebuilds. The addresses run across Boston, South Boston, East Boston, Charlestown, Brookline, Weston and Everett between 2018 and 2023, several valued between $100,000 and $1.3 million. His Massachusetts home improvement contractor license, #175302, is expired on the state registry. BuildZoom's directory also lists three further Massachusetts license numbers under his name — two more Construction Supervisor filings and a second Home Improvement Contractor registration; confirm current status of any of these directly with the state before hiring. For a building-envelope project at this scale, ask directly about which license will be on the permit and current insurance coverage.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from George F Sennott. 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
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1 change recorded — last scanned Aug 3, 2026.
Correct leak diagnosis3.9
Specializes in historic buildings3.7
Established business2.4
Full strip and reroof inside a day5.0
Full roof replacement done in one day5.0