Verified record
Building Unit Conversions is a Dorchester carpentry and general contracting outfit — also listed on Thumbtack as "R and G Contracting/Building UNIT Conversions" — with 25 years in business and a small, three-person crew. Its written record centers on hands-on carpentry: framing, porch rebuilds and deck work, all attributed by name to John Feroli. In a February 2018 review, a homeowner described the company tearing down a two-story wood-frame back porch and rebuilding it from the ground up, including new cement footings — solidly constructed and attractive enough that neighbors commented on it. Two more reviews from April 2018 echo the same themes: a Charlestown business owner praised responsive, flexible framing work coordinated around a commercial move-in, and another customer called the value fair and was extremely pleased with how their decks came out. All three are five-star, and the company also picked up Angie's List Super Service Awards in six different years between 2010 and 2016. Thumbtack states it verified a Massachusetts Construction Supervisor license for the business; Houzz separately lists a license number without specifying its type. For a homeowner needing framing carpentry, a porch rebuild, or deck work, the written record — though several years old now — points to careful, well-received craftsmanship; worth confirming current licensing and availability directly.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Building Unit Conversions. 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
John was very responsive and great to work with. The value was fair and we are extremely pleased with the way our decks came out.
John helped us with some framing work in a commercial space in Charlestown. He was incredibly responsive, and flexible. Given that our business was in the process of moving in to the space in question and John had to communicate with some of the other contractors we were working with, he was very helpful and the work he did looks great! I would recommend his services to anyone looking for framing carpentry.
John Feroli tore down my 2-story wood frame back porch and rebuilt it from the ground up, including new cement footings. It is both solidly constructed and attractive. All my immediate neighbors have commented on how good it looks.
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1 change recorded — last scanned Aug 2, 2026.
Came back to fix deck stairs years later5.0
Decks and porches5.0
Custom sheds5.0