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SL Carpentry INC is a home remodeling and custom carpentry company based in Medford, MA, run by carpenters Leandro and Sidinei. The company handles custom decking, kitchen and bathroom remodeling, home additions, ADU construction, basement finishing and general carpentry across the Greater Boston area. Google shows a 5★ average from 8 ratings, and recent reviews describe excellent trim and porch-skirting work, a neatly finished deck with clear communication throughout, a fair-quoted ADU build, and a home addition praised for unmatched attention to detail. In March 2026 reviews, customers also credited the crew with being extremely responsive even off hours and reliable across many years of subcontracting work, and described competitively priced hardwood floor replacement and garage work.
SL Carpentry did some work replacing some trim on our house and upgrading the skirting on our porch. They were excellent to work with and did a great job.
We are extremely pleased with our new deck and the quality of the workmanship by Leo and his team. The project was completed neatly, professionally, and with great attention to detail. Communication throughout the process was excellent, and all important details were clearly explained and addressed. They were proactive in working with the town to obtain the necessary permits and ensured that every requirement was met for permit approval and final completion. The entire process was smooth and well-managed. We highly recommend them to anyone looking for a reliable and professional contractor.
Leo and SL carpentry is great. I contracted them to build an ADU and they provided fair quote and and their work is superior. Highly recommend.
My wife and I recently put a sizable addition on our house. After getting several quotes and connecting with several contractors, we ended up choosing SL Carpentry INC for this project. Leandro and his crew are absolutely incredible to work with. Their attention to detail is unmatched and their willingness to work alongside homeowners the entire project, is very comforting. I would highly recommend SL Carpentry INC for any of your future projects, big or small! Thank you for our amazing new home!
My husband and I used SL Carpentry for a garage, my mom used them for renovations at her house, and my brother used them for his addition. All of us are so pleased with the work that was performed and would recommend SL to anyone and everyone!
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1 change recorded — last scanned Sep 19, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from SL Carpentry INC. 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
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Ownership
Certified attributes are verified against the public registry. Others are the business's own statement.
Came back to fix deck stairs years later5.0
Decks and porches5.0
Custom sheds5.0
Roof installed in one day4.3
