Accessory dwelling unit builders near me

Looking for accessory dwelling unit builders near me in Boston, MA? Call AccessoryDwellingUnit Services 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 involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

Local builders are teams that specialize in residential structures within your specific region. They understand the particular building codes and environmental requirements of your city, which helps prevent delays during inspections. You need a local builder when you are ready to break ground and want a partner who knows the local permit office and site conditions well. This ensures your project stays on track and follows all area-specific rules.

Frequently asked in Boston

What are the disadvantages of ADUs in Boston?

Potential disadvantages in Boston might include navigating complex city zoning regulations, which can vary significantly between neighborhoods. You'll also want to consider the impact on your property's existing footprint and potential parking challenges. The upfront cost of construction is another factor to weigh carefully. Discussing these with a local expert is key.

How much does an ADU cost in Massachusetts?

What are the rules for ADUs in California?

While this service focuses on Massachusetts, it's worth noting that California has specific state laws encouraging ADUs, often with streamlined approval processes and limitations on local restrictions. However, individual cities within California can have their own additional requirements. It's important to consult with local authorities for any specific location.

Is an ADU allowed in Maryland?

Maryland has varying regulations regarding ADUs across its counties and cities, with some areas being more permissive than others. It's crucial to check the local zoning ordinances for the specific jurisdiction you're interested in. This service specifically operates within Massachusetts, so for Maryland, you would need to seek local expertise.

What are the rules for ADUs in California?

California has enacted legislation to make it easier to build ADUs, including statewide standards that limit local governments' ability to deny them. Key rules often address minimum lot sizes, owner-occupancy requirements, and impact fees. Again, while this is for Massachusetts, understanding these different state approaches is helpful.

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, Jamaica Plain, Dorchester — and every surrounding area.