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Local businessLocal business
Verified record
John B Sullivan Jr is a carpentry business working under that name, and it turns up in general business directories — LinkedIn, Hubbiz and Whereorg each carry an entry for it. If you are lining up carpentry work, start by asking what they take on and what they have finished recently, with a couple of past customers you can call. Confirm the licensing and insurance the job calls for, and get the scope, the timeline and the price in writing before work starts.
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No changes recorded yet — last scanned Sep 5, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from John B Sullivan Jr. 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
Came back to fix deck stairs years later5.0
Decks and porches5.0
Custom sheds5.0