Bethoney Builders LLC is a Duxbury, Massachusetts building company that describes itself as family owned and operated with 40 years behind it. Its principal builder, Christopher Bethoney Jr., is named on the registry record and holds a Massachusetts construction supervisor licence; the company pitches a one-call design, permit and build service for accessory dwelling units, additions, garages, decks, finished basements and framing.
Its Home Improvement Contractor registration, 188275, is verified active in the state registry under the company's own name. A construction supervisor number, CS-054759, is listed by both BuildZoom and Houzz as the company's claim — that one is a directory claim rather than a registry check. BuildZoom also shows an older Massachusetts HIC registration, 113370, as inactive and at one point cancelled, which is worth asking about only for completeness.
The permit record is the strongest evidence of what they actually build: twenty permitted projects, including a $350,000 addition in Hanover, a $125,000 job demolishing a one-car garage and putting up a two-car garage with a bonus room, and a $120,000 kitchen and two-bathroom renovation in Braintree, plus decks in Marshfield and Hanover. BuildZoom scores them 97, in the top 18% of Massachusetts contractors.
Nine reviews on Google, all five stars, average 5.0 across 15 ratings. The consistent themes are communication and site conduct: a 2024 reviewer described crews arriving on time, setting up to minimise dust and debris and cleaning the area before leaving each day, and singled out returned calls as promised. Deck work comes up repeatedly — a 2024 review described a large deck where the owner was kept in the loop start to finish, another the Trex material on a finished deck — alongside a finished basement and, in a 2024 account, repair of winter water damage that led to repeat hires. The company's own site claims a run of South Shore best-framing-contractor awards, and South Shore Living named it best builder in 2017.
There is nothing negative on file, but the volume is modest and the reviews are recent and concentrated on Google, so treat the picture as consistent rather than deeply tested. For an ADU, addition or deck on the South Shore this is a well-permitted, registry-verified shop; confirm the construction supervisor number directly and get the schedule and allowances in writing.