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Verified record
Thomsen Construction is an Essex-based carpentry and remodeling outfit led by Carl Thomsen, whose crews the company says carry a combined 100-plus years of experience across northeast Massachusetts, from Boston and Rockport up through Manchester-by-the-Sea. The written record here is deep but dated: all 12 of the reviews on file run from July 2016 to October 2017, and nothing newer has been posted since. What that record shows is consistently detailed praise for careful, well-managed carpentry and remodeling work. In a 2017 review, a couple describes new exterior siding, shutters and a skylight completed with great care and obvious expertise, with project manager Loren French sending regular updates by phone, email and site visits. Two homeowners, in 2016 and 2017 reviews, describe full bathroom remodels — one incorporating Carl's own design suggestions, the other rebuilding an aging bathroom down to relocating the shower, toilet and radiator and installing underfloor heating, with tile work singled out for praise. Other 2016 reviews describe a custom porch railing solved around a tricky one-sided installation, a rebuilt garden bench, and repeated notes that crews clean job sites daily. Two of the twelve accounts on file are worth flagging as different in kind: one is written by a self-described subcontractor rather than a homeowner, and another reads more like a business contact the company thanks by name in its own reply. The one thing that needs a direct question before hiring: Thomsen's Massachusetts home improvement contractor registration is expired according to the state registry, and BuildZoom's own directory shows every license record it has for the company — including the Construction Supervisor license the company's own site still advertises as current — as inactive or cancelled, flagging 'No active license on file.' BuildZoom separately shows the same HIC number as both nominally 'Active' (under a not-independently-verified heading) and cancelled on different pages of its own site, so its own records disagree with each other; the state registry is the authority here, and it says expired. For a homeowner drawn to the carpentry and bathroom-remodel work described in these accounts, it's worth confirming current licensing status directly with Carl Thomsen before signing anything, given how much time has passed since the written record was last updated.
I have know Carl from Thomsen Construction for over 5 years now. I have seen & done much work with the company. Everyone, from the direct contracting team, to the office manager, & of course the owner himself, is absolutely professional in the highest level. They have worked on major projects all over this state. Their work crew has a great eye for quality & know how. They are clean, neat, & know how to finish. Simply put, this outfit is the real deal, & if your given a chance to have them work for you, then you are gifted home owner.
As a subcontractor for Thomsen Construction I cannot say enough good things. Carl and his crews are courteous, thoughtful, understanding people who are a pleasure to work with. Their projects are first rate quality and absolutely gorgeous. I would highly recommend them to anyone looking to build or remodel their home.
Carl and his company are exceptional. His workers are always on time. The carpenters work quickly and accurately and the finished product is always perfect. They clean up after themselves each evening which is always a good sign. My last project was to install an interior door, install an access hatch to under my deck and make exterior repairs before the winter. As always, I was extremely satisfied.
My husband and I recently hired Thomsen Construction for replacement of our exterior siding and shutters, and skylight, and other carpentry needs. The work was on time and completed with great care and obvious expertise. Loren French, the project manager, sent regular updates by email, calls, and visits. We were amazed at the attention to detail throughout. Many thanks for a fairly stress free renovation experience!
A pleasure to work with and a job well done! Work was done in a timely manner with little interference into our daily lives. You can't ask for more than that.
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1 change recorded — last scanned Aug 9, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Thomsen Construction Inc. 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
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Jim O'Neil and his three sons4.2
$424,965 kitchen expansion in Wenham3.5
Detailed craftsmanship5.0
