ADU Builder in Provincetown, MA
Mussato Building Group designs, permits, and builds ADUs in Provincetown, MA, from detached guest cottages to in-law suites and garage conversions. We are a family-owned general contractor founded in 2004, with more than 100 projects completed and a 5.0 rating from 21 Google reviews. Our base in South Yarmouth is about 42 miles away, and we work across the West End, the East End, and the Commercial Street area.
- Family-owned since 2004
- Licensed + insured in MA
- 100+ projects completed
- 5.0 stars from 21 Google reviews
- BBB accredited
Building an ADU in Provincetown
Provincetown sits at the very tip of the Cape, with historic houses close together on small lots between the harbor and the dunes.
State law allows one ADU of up to 900 square feet by right on most single-family lots, and that includes Provincetown. What usually decides the project here is the lot and the septic system: an ADU with a bedroom adds to the bedroom count the system has to carry under Title 5, so we start with the Provincetown Board of Health.
Where a property is historic, we check with Provincetown’s Historic District Commission before the design is final.
Inside the Seashore district of Provincetown, zoning limits new structures more than elsewhere in town, so whether an ADU fits on a Seashore lot is the first thing we confirm.
In a town with many summer homes, an ADU often becomes the guest cottage that lets family visit Provincetown without crowding the main house.
“Mussato Building Group has been a loyal and trusted partner of ours for over ten years and one hundred projects. Their professionalism and quality of work are second to none. We look forward to working with them far into the future.”
ADU permits in Provincetown
We prepare the drawings, file the applications, and schedule the inspections. Here is what a project like this usually needs:
- Building permit from the Provincetown Building Department, and a certificate of occupancy at the end.
- Review by the Provincetown Board of Health of septic capacity under Title 5 if the ADU adds a bedroom.
- Zoning review of setbacks, height, and lot coverage under the Provincetown zoning bylaw.
- Conservation Commission review if the ADU is within 100 feet of a wetland, coastal bank, dune, or salt marsh.
- Flood-zone design if FEMA maps the lot in an AE or VE zone.
- A check with Provincetown’s Historic District Commission if the property is historic.
- Seashore district zoning review if the lot is inside the Cape Cod National Seashore.
- Detached ADUs and guest cottages
- Attached ADUs and in-law suites
- Garage and lower-level conversions
- Kitchens and bathrooms sized for small spaces
- Foundations, framing, and exteriors matched to the main house
- Heat, hot water, and electrical for a second dwelling
- Zoning, septic, and permit coordination
- Site work and paths between the houses
ADU Builder in Provincetown: FAQ
Can I build an ADU in Provincetown?
In most cases, yes. State law allows one ADU of up to 900 square feet, or half the size of the main house if that is smaller, by right on single-family lots in Provincetown. Setbacks, septic capacity, and conservation rules still apply, so we check your lot first.
Do you build ADUs in the West End and the East End?
Yes. We build detached and attached ADUs all over Provincetown, including the West End, the East End, and the Commercial Street area. Our base in South Yarmouth is about 42 miles away.
Will my septic system handle an ADU in Provincetown?
Much of Provincetown’s center is on town sewer, while homes outside it use septic. On septic, Title 5 sizes the system by bedroom count, so an ADU with a bedroom can mean a septic upgrade. The Provincetown Board of Health reviews it before the building permit.
Can I rent out an ADU in Provincetown?
Long-term rentals are allowed, and the town cannot require you to live on the property. Short-term rentals of an ADU can be restricted by the town, so check the Provincetown rules before you plan on summer rentals.
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