ADU Builders in Boston

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Maximize your property’s potential with a beautifully designed Accessory Dwelling Unit (ADU). These backyard tiny homes can function as guest houses, rental units, and more.

At Beantown Builders, we craft high-quality ADUs that add space, functionality, and value to your home.

Why Beantown Builders

Backed by 40 years of construction experience, we provide a seamless ADU building process from start to finish. Our licensed team handles everything—including design, permits, and construction—while ensuring full compliance with local regulations.

With clear estimates, realistic timelines, and open communication, we make adding an ADU to your property simple and stress-free.

Our ADU Offerings

Single Family Homes & Apartments

We help homeowners throughout the Greater Boston area transform their spaces through major home and apartment remodels. Whether you’re purchasing a property in need of some serious love or you’re looking to expand your space through a home addition, we can help you navigate everything from understanding the costs to ensuring the finishes are exactly as you imagined.

What Our Customers Say

Donald and Caroline were great in accommodating all of our needs and changes throughout the renovation of our parents' condo. They always kept open lines of communication, and made sure that we knew how any changes affected the total price of the project. We would absolutely use them again in the future.

Beantown Builders was a very professional with us. We completed a 203k gut rehab with them, and it was a good experience. The work was completed on time, and the project turned out great! The PM assigned to my job was awesome, and the owner took a vested interest in it as well, helping me through the design and lending process. Would highly recommend!!

Pulled me out of a hole and gave us a finished project of our dreams, literally, had a rehab loan, bad experience with the first Contractor, gave them a call, within a couple of weeks the house was nearly finished. Kudos for Donald, and his team, I recommend them to everybody who needs or asks me about them! 5 stars indeed and well deserved, once again THANK YOU, and await my call, I’ll be hiring you guys again no doubt!

FAQs

Are ADUs legal in Boston?

Yes! Most single-family homeowners can build an ADU on their property, but it may depend on zoning regulations, lot size, and design constraints.

Boston has updated ADU pilot programs in certain neighborhoods, and rules vary by area. We handle all permitting to ensure your unit complies with local requirements.

What types of ADUs can I build in Boston?

Boston allows attached, detached, and basement/garage conversion ADUs in certain zoning districts. We can help determine the best option for your property.

How much value does an ADU add to a home in Boston?

An ADU can significantly boost property value by creating additional living space and rental potential. Beyond resale, many homeowners find the true value is in long-term flexibility — whether it’s housing family members, lowering retirement expenses, or generating steady rental income in a high-demand city.

How long does ADU construction take in Boston?

Timelines depend on scope. A simple basement conversion might take a few months, while building a detached unit with utilities and full foundations can extend to a year or more. The permitting process in Boston also adds time, so working with our experienced contractors can streamline the schedule.

Our Work

Interested in exploring our previous work? Browse our portfolio below and see how Beantown Builders can bring your vision to life.

Proudly Serving the Greater Boston Area

Beantown Builders is proud to serve both commercial and residential clients throughout Massachusetts. Our primary service areas include Boston, Brookline, Somerville, and Cambridge, but we also serve a wide range of other cities including Taunton, Quincy, Newton, Waltham, Lowell, Lawrence, Lynn, Haverhill, and Framingham.