MassPermits Get leads →
Home › Permits › Bourne › ADU (Accessory Dwelling Unit) › Costs

ADU (Accessory Dwelling Unit) Project Costs in Bourne, MA

What Bourne owners actually declared on 20 recent ADU building permits in our dataset — public-record values, not quotes.

$21,000
Median project value
$8,000–$75,000
Typical range
20
Permits analyzed

Owner-declared values from public building-permit records, residential-scale projects only (commercial and out-of-scale outliers excluded) — a benchmark, not a substitute for a contractor quote.

Get the full Bourne ADU list

Exact addresses, the permit holder, and a sortable file — plus a free sample so you can see the quality first.

See a free sample →

Weekly feed $99/mo, delivered every Monday

ADU (Accessory Dwelling Unit) leads in Bourne → · all Bourne permits · ADU costs statewide

Get Bourne permits free, every Monday

New building permits filed in Bourne — emailed to you weekly. Free, no card. Unsubscribe in one click.

Want every town, with exact full addresses? See the full feed →

FAQ

How much does a ADU project cost in Bourne, MA?

Across 20 recent Bourne building permits that declared a value, the median ADU project value is $21,000, with a typical range of $8,000 to $75,000. These are owner-declared values from public permit records, not quotes.

Where does this cost data come from?

Every figure is the declared project value on a real building permit filed with the Bourne building department — public records MassPermits aggregates, not estimates.