Adu near me — Boston, MA | AccessoryDwellingUnit Pros

Looking for adu near me in Boston, MA? Call AccessoryDwellingUnit Pros for a contact a provider — no obligation. Licensed adu builders serve Boston and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.

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Frequently asked in Boston

What are the disadvantages of ADUs?

How much does an ADU cost in Massachusetts?

Costs in Massachusetts vary based on size, materials, and site complexity. Factors like foundation needs and utility hookups in Boston's older areas can affect the price. Getting a detailed quote from a local pro is the best way to understand the investment for your property.

What are the rules for ADUs in California?

California has specific state laws encouraging ADUs, but local city ordinances still apply. Rules often cover setbacks, lot coverage, and parking requirements. While this is about Massachusetts, understanding general ADU regulations helps. We focus on Boston's local rules.

Is an ADU allowed in Maryland?

Maryland has various local regulations for ADUs, with many counties and cities allowing them. Zoning laws dictate size, placement, and occupancy. If you're in Maryland, check with your specific county planning department for their requirements. Our focus is Boston.

What are the rules for ADU in California?

California's ADU laws aim to streamline approvals and increase housing. Key rules often involve minimum unit sizes, limits on owner occupancy, and streamlined permitting. While we operate in Boston, knowing these trends is useful. Call for Boston specifics.

Also serving nearby: Quincy · Cambridge · Lynn · Newton · Brockton

All cities in Massachusetts →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

653,833residents

13,525per sq mile

8ZIP codes served

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, South End, North End, Dorchester, Jamaica Plain — and every surrounding area.