Local business · Kingston, MALocal business · 3 Daniel Ln, Kingston, MA 02364
Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Belfort Builders LLC. Use it to sanity-check bids, then get the real number in writing.
A typical single-level deck is 12×16 — about 200 sq ft.
Estimated range
$7,750 – $14,500
Typical carpentry project around $11,100
Belfort Builders LLC is a Kingston carpentry and deck-building company run by John Belfort, working the South Shore from Kingston out to Weymouth, Marshfield, Plymouth, Carver, Halifax, Pembroke and Bourne. Its own site describes frame-to-finish carpentry, custom built-in cabinets, decks, farmer's porches and additions, and states the business is veteran owned. Massachusetts registry checks confirm both an active Home Improvement Contractor registration in the company's name and an active Construction Supervisor licence held by John Phillip Belfort. Decks and porches are what customers hire it for and what they describe in detail. In March 2026 a homeowner who paid $26,000 for a deck wrote that the craftsmanship was outstanding, the work area was kept clean and organised, and the crew showed up when promised; another 2026 customer said the project finished faster than expected. Stair and porch work recurs: a 2023 reviewer described a complete tear-down and rebuild of two sets of stairs, another had multiple deck and stair replacements done in 2022 and kept hiring the company back, and a 2024 customer had built-in bookshelves and a mantle made. Building-permit records list an 8x37ft front porch with a hip roof in Hanson and a stairway replacement in Acushnet, both in 2025. The one dissenting account is recent and about scheduling rather than workmanship: in June 2026 a Google reviewer wrote that John "agreed to do our project and then strung us along for 3 weeks" before cancelling by text. It is the only negative on file and it sits against eleven five-star accounts, but it is the newest, so ask directly about start dates and how changes get communicated before you commit. For deck, porch, stair and finish-carpentry work on the South Shore this is a small, licensed, owner-run outfit with a consistent record of five-star jobs at stated prices from $2,500 to $26,000. Get the schedule in writing, and confirm which licence covers your job — the Construction Supervisor licence is the owner's personally, the home improvement registration is the company's.
John agreed to do our project and then strung us along for 3 weeks. Bailed and did it by text, not even a phone call. Was expecting better from this company but found out he’s just like so many others.
Very professional! Great prices and excellent workmanship.. Highly recommended!
Did an absolutely amazing job! 10/10 recommend
John and his crew got our project done faster than expected and made the whole process completely painless. The work they did turned out even better than we expected. We will definitely be using Belfort Builders again in the near future!
Yes job got done very well and in a timing manner. He was very professional and showed up everyday untill the job was done
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Certified attributes are verified against the public registry. Others are the business's own statement.
Added 12 new comments, added 23 new photos, verified active license, established rating 3.8
Small jobs accepted4.3
Custom cabinetry4.3