Verified record
Customers writing in 2020 and 2024 alike credit Duncan Thorne personally for both designing and building the work. Thorne Design & Build describes itself as a small Framingham design-build firm doing custom homes, additions, carriage houses and whole-home remodels, often with custom millwork and reclaimed materials. According to its site, the firm was established in 1997, and Thorne, its principal, holds a Bachelor of Architecture from UC Berkeley. An April 2020 Houzz reviewer said Thorne had done four projects on their house: a room division, a living room and basement redesign, complete bathroom replacements, and a garage and mudroom addition that involved reconfiguring the driveway and building retaining walls. In an April 2020 review, the owner of a Victorian home described a kitchen with a built-in nook, reclaimed wood and a stained glass window, a waterproofed basement with an acid-stained concrete floor, and a study with a live-edge desk and a ladder up to a loft. Another April 2020 reviewer mentioned a $150k two-story addition and called his prices very reasonable. That reviewer also said he did not hold an architect's licence, despite years at architecture school. An August 2020 reviewer who bought a contemporary craftsman house Thorne built in Stow said no space in it went unused. In February 2024, Angi customers described a great room addition, a master suite addition with an intricate staircase and tower, and a whole-house gut of a second home. Another said a two-car garage with a loft, built into a hill and completed in 2011, had held up with no maintenance. The firm holds 5.0 stars on both Houzz (8 ratings) and Angi (5 ratings). Its Massachusetts home improvement contractor registration, #155595 in Duncan Thorne's name, is expired on the state registry. The company's website still describes it as a registered home improvement contractor.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Thorne Design & Build LLC. 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
Duncan and his crew put an addition on our home. He added a master suite and an amazing intricate staircase and tower. In addition, he remodeled one of our bedrooms. His creative vision is top notch. I would highly recommend him and his team.
Duncan is a master carpenter with an artistâ s eye. He is passionate about designing and building living spaces that fit the specific needs of his clients. We needed more living space in our older house but also wanted keep its character. Duncan was able to realize our vision by patiently guiding us through design decisions ranging from large scale to small aesthetic details. We highly recommend him.
Duncan and team designed and built a great room addition. He is very creative and has a wonderful vision. All work and materials were of high quality. Very satisfied customer.
Duncan designed and built our very attractive and practical 2-car garage with loft and without any impeding middle beam supports. It required substantial excavation to build it into a hill which provided large rocks for a wall on one side. Completed in 2011 it has held up very well, with no maintenance required.
Thorne Design & Build is exceptional. Duncan Thorne is a rare combination of designer, architect, builder and has a team that works for him. He designs and builds beautiful, unique spaces from remodels to entire homes. He designed and remodeled my kitchen, basement, study initially and then my entire house which had been a total gut, in my second home. A+++ highly recommend.
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1 change recorded — last scanned Aug 8, 2026.
Rescues botched jobs5.0
Tile work reviewers single out4.8
Thorough cleanup4.6
Owner-run since 2007Not yet rated