An accessory dwelling unit (ADU) can give Boston homeowners more space to live, make money and plan for the future without giving up the neighborhood they love. Interest is also on the rise: as of September 2025, 51 ADUs have already been permitted In Boston, up from 34 through all of 2024.
Whether you want space for the family, more privacy, or better use of your basement, attic, garage, or backyard, an ADU can open up options that feel both functional and personal at the same time.
At Sweeten, we know that building an ADU in Boston is not a completely turnkey project. This is especially true since zoning, permits, planning, and budget can all shape what makes sense for your property.
Read on to see how a well-planned accessory dwelling unit in Boston can add space, flexibility, and real value to every square foot of your home.
