Working With Us
Hiring an ADU builder in Provincetown
Lower Cape ADU is a licensed accessory dwelling unit builder serving Provincetown and the seven other Lower Cape towns. Our office is in North Eastham, at Unit #7, 4250 State Highway, about half an hour down Route 6 from Provincetown. We work the length of the Outer Cape and know how different building in Provincetown is from building anywhere else on it.
Provincetown is the most constrained building environment on the Lower Cape — small lots, close neighbors, historic review, and limited staging room. Experience here is not a nicety, it is what keeps a project on schedule.
We handle Provincetown ADU projects end to end — site assessment, design, permitting, and construction supervision — so you are working with one accountable party from the first conversation through to occupancy, rather than coordinating a designer, an expediter, and a contractor yourself.
- Vern Hatt, owner
- MA Construction Supervisor License #CS62739
- MA Home Improvement Contractor License #177590
- Office in North Eastham
What an Provincetown ADU project looks like
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Free consultation
We sit down with you — no charge, no obligation — and talk about what you are actually trying to solve on your Provincetown property: rental income, room for family, a place to downsize into, or staying put as you age.
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Property assessment
We walk the property and look at the things that decide the project: lot area, setbacks, septic or sewer, grade, access, and what the existing house can support.
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Legal and physical limits
We establish what Provincetown and the Massachusetts Affordable Homes Act actually allow on your parcel, so the design starts from a real envelope rather than a hopeful one.
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Preliminary design and estimate
We produce a preliminary design and a good-faith estimate as part of the bidding process, so you can see the project and its cost before committing to anything.
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Permitting
We prepare and submit the permit package and represent the project before the Provincetown Building Department, the Historic District Commission where a property falls within its jurisdiction, and the Board of Health or Department of Public Works on wastewater questions as required.
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Construction supervision
We supervise construction through to occupancy, as a licensed Massachusetts Construction Supervisor working on your Provincetown property.
What We Build
Types of ADUs we build in Provincetown
Which of these fits depends on your lot, your septic or sewer situation, and what you are trying to accomplish. We work through that with you before recommending one.
Standalone Cottages in Provincetown
A detached cottage on your own lot — the most flexible option when land and septic allow it.
Garage Conversions in Provincetown
Converting an existing garage, or building above one, often on an already-approved footprint.
Basement Conversions in Provincetown
A lower-level unit using space you already have, where ceiling height and egress work out.
Attic Conversions in Provincetown
Overhead space turned into a compact unit without expanding the building footprint.
Modular & Prefab in Provincetown
Factory-built units that shorten on-site construction time and tighten the schedule.
The Local Picture
Provincetown's value is in its density
Provincetown is unlike anywhere else on the Cape — a compact, walkable town at the very tip of the peninsula, packed with history, art, and a fiercely loyal year-round community. It's also home to one of the most severe housing shortages in the Commonwealth, where high property values and a seasonal economy make year-round housing scarce. In a town this tightly built, an ADU isn't sprawl — it's exactly the kind of gentle, infill housing that fits Provincetown's existing fabric.
Why an ADU Fits Here
Provincetown character, Provincetown opportunity
What makes Provincetown Provincetown—and how a well-designed accessory dwelling unit fits naturally into it.
Commercial Street & the East End
Provincetown's compact, walkable core means small units sit close to everything. An ADU here can serve a year-round tenant who doesn't even need a car — ideal infill in a dense, historic streetscape.
Pilgrim Monument & MacMillan Pier
From the Pilgrim Monument to the working pier, Provincetown's landmarks anchor a town that draws visitors all season. That demand keeps rental housing valuable — and an ADU can capture it responsibly.
Severe Housing Shortage
Few places in Massachusetts face a tighter housing market than Provincetown. A year-round ADU rental directly answers the town's most pressing need while supporting the owner's finances.
Historic District Character
Much of Provincetown sits within historic districts where scale and detail are closely watched. ADU work here demands design that fits the town's tight lots and architectural character.
The Rules, In Brief
Provincetown ADU rules at a glance
How the statewide ADU law applies in Provincetown — and what still gets decided locally.
By-Right, Statewide
Since February 2025, a first ADU is allowed by right in single-family zoning under the Affordable Homes Act, with no owner-occupancy requirement for that unit.
Size Limits
By-right units are capped at 900 square feet or 50% of the primary dwelling, whichever is smaller — well suited to Provincetown's compact lots.
Historic Review
Many Provincetown properties fall within historic districts, which can add design and materials review on top of zoning. Early coordination keeps a project on schedule.
Density & Sewer
Unlike most of the Outer Cape, parts of Provincetown are sewered, which can change the septic calculus. Lot coverage and setbacks on tight parcels are the more common constraints.
Local Knowledge
What to think about for a Provincetown ADU
Provincetown's constraints are the opposite of Truro's: here the challenge is density, not scarcity of land. Tight lots, generous lot-coverage limits already in use, and historic-district design review are the factors that most often shape a project. The upside is that town sewer in parts of Provincetown can remove the septic bottleneck that limits other Outer Cape towns. Because so much depends on the specific parcel and whether it sits in a historic district, we begin with a close look at your lot's coverage, setbacks, and review status before recommending an approach.
Permitting an ADU in Provincetown typically involves the Provincetown Building Department, the Historic District Commission where a property falls within its jurisdiction, and the Board of Health or Department of Public Works on wastewater questions. We prepare the package and represent the project through that process as part of every job.
Common Questions
Provincetown ADU questions we get asked
Do I need a special permit to build an ADU in Provincetown?
Under the Massachusetts Affordable Homes Act, a first accessory dwelling unit is allowed by right in single-family zoning, which means a special permit is generally not required for that first unit. You still need a building permit, and Provincetown still applies its own setback, height, and lot coverage rules. Second units, oversized units, or properties in overlay districts may require additional local review. We confirm the current requirements with the town as part of every project.
How big can an ADU be in Provincetown?
The by-right cap is 900 square feet or 50% of the primary dwelling’s floor area, whichever is smaller. On a modest Provincetown home, the 50% figure is often the binding number rather than the 900 square feet — which is why we measure the existing house early instead of assuming.
Will septic or sewer limit an ADU on my Provincetown property?
Provincetown is unusual on the Lower Cape in having municipal sewer serving much of town, though capacity is allocated and not every property is connected or connectable. Whether your address has sewer access, and whether capacity is available for an added unit, is the first thing we check — it changes the project substantially.
How long does an ADU project take in Provincetown?
Design and permitting typically run a few months, and construction depends on the type of unit and the season. Garage, basement, and attic conversions generally move faster than new detached construction. We give you a realistic schedule for your specific Provincetown property at the consultation rather than a generic range.
Can I rent out an ADU in Provincetown?
Long-term rental of an accessory dwelling unit is generally permitted. Short-term rental rules are set locally and vary meaningfully from town to town on the Lower Cape, so if short-term rental income is part of your plan, confirm current Provincetown rules before you build. We raise this early because it can change which design makes sense.
Let's Talk
Thinking about an ADU in Provincetown?
The first conversation is free. Tell us about your Provincetown property and what you are trying to solve — rental income, family space, or downsizing in place — and we will walk you through whether it makes sense, with a preliminary design before any estimate.
Start with a Free ConsultationVern Hatt · Licensed Construction Supervisor #CS62739 · Home Improvement Contractor #177590