ADU Construction in Newton MA — In-Law Suites, Garage Conversions & More
Boston Smart Plastering builds accessory dwelling units throughout Newton, MA. Newton is one of Massachusetts' most prestigious communities — a large, prosperous city 7 miles west of Boston known for its 13 distinct villages, historic architecture, and one of the most active high-end renovation markets in Greater Boston. Boston Smart Plastering works extensively throughout Newton's villages on plaster restoration, premium renovations, and new construction. Whether you want a basement apartment, garage conversion, attached in-law suite, or detached backyard cottage, we manage every phase from permits to final finishes.
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ADUs are one of the smartest investments Newton homeowners can make. Newton's housing stock is extraordinarily varied — Victorian and Colonial Revival homes in Newton Centre and Newtonville, mid-century construction in Newton Highlands, substantial new construction near Chestnut Hill, and everything in between. The city's affluence creates consistent demand for traditional plaster restoration, Level 5 drywall finishing, high-end kitchen and bathroom renovation, and premium exterior work. Under Massachusetts ADU law, most single-family properties in Middlesex County can now add an ADU by-right. Boston Smart Plastering handles the full build — design, permitting, construction, and Certificate of Occupancy. Newton is 7 miles west of Boston off the Mass Pike (I-90) and Route 128, one of our most active Middlesex County service communities.
Frequently asked questions
How much does it cost to build an ADU in Newton MA?
ADU costs in Newton vary by type. A basement conversion typically runs $80,000–$150,000. A detached cottage can cost $180,000–$350,000+. We provide a detailed estimate after visiting your Newton property.
Do I need a permit for an ADU in Newton MA?
Yes — all ADU construction requires building permits. Under the 2024 Massachusetts ADU law, most Newton properties can add an ADU by-right. We handle all permit applications for Middlesex County on your behalf.