Planning addition work in Boston? Here is what recent Boston homeowners actually declared on their building permits — real public-record values, not quotes.
Figures are owner-declared project values from public Boston building-permit records — a useful benchmark, not a substitute for a contractor quote.
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Across 8 recent Boston building permits that declared a value, the median addition project value is $65,000, with a typical range of $36,000 to $416,639. These are owner-declared values from public permit records, not quotes.
Every figure is the declared project value on a real building permit filed with the Boston building department — public records MassPermits aggregates, not estimates.