Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.
About this service
When unexpected life changes happen, like an aging parent needing immediate care or a sudden lack of housing, an emergency ADU provides a functional solution. This service involves fast-tracking the planning and permitting phase to prioritize your build for urgent occupancy. You need this if you require a secondary living space on your property quickly to address a critical housing shortage for family members, ensuring they have a safe, private, and independent place to stay without waiting for standard construction timelines.
Frequently asked in Boston
What is the cost of an accessory dwelling unit in Boston?
Can I get an accessory dwelling unit quote for Boston?
What are local ADU options in Boston?
How much does it cost to build an accessory dwelling unit in Boston?
What are the best ADU options for Boston properties?
Who is a good accessory dwelling unit contractor in Boston?
We work with highly qualified accessory dwelling unit contractors in Boston. These professionals are licensed, insured, and experienced with the city's building requirements. They ensure quality construction and adherence to all codes. You'll receive reliable service for your ADU project. Call us to find a trusted Boston contractor.
What about backyard accessory dwelling units in Boston?
Also serving nearby: Quincy · Cambridge · Lynn · Newton · Brockton
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Boston — population 653,833; about 13,525 residents per square mile across 48.3 sq mi. ZIP codes covered include 02108, 02109, 02110, 02111, 02112, 02113, 02114, 02115.
Neighborhoods served in Boston: Back Bay, Beacon Hill, North End, South End, Fenway-Kenmore, Charlestown — and every surrounding area.
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