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Verified record
Mark O Henderson is listed in Onset, Massachusetts as a local remodeling and carpentry contractor. The available directory material provides no customer-review history or detailed operating background, so confirm current licensing, references, scope, and timing before booking.
Specializes in
Also offers
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Mark O Henderson. 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
Languages
No changes recorded yet — last scanned Sep 4, 2026.
Came back to fix deck stairs years later5.0
Decks and porches5.0
Custom sheds5.0