ADU Construction in Westwood MA — In-Law Suites, Garage Conversions & More
Boston Smart Plastering builds accessory dwelling units throughout Westwood, MA. Westwood is an affluent and desirable suburban community in southwestern Norfolk County, 15 miles south of Boston, known for its large properties, excellent schools, and high-end residential renovation market. Boston Smart Plastering serves Westwood homeowners on premium renovation and construction projects across all trades. 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 Westwood homeowners can make. Westwood features a mix of mid-century and newer large-lot single-family homes, with significant new construction activity driven by the town's desirability. The affluent character of Westwood's housing market supports strong demand for high-end kitchen and bathroom renovations, ADU construction, premium exterior work, and whole-home renovation projects. Under Massachusetts ADU law, most single-family properties in Norfolk County can now add an ADU by-right. Boston Smart Plastering handles the full build — design, permitting, construction, and Certificate of Occupancy. Westwood is 15 miles southwest of Boston at the I-95 and Route 109 area, easily accessible from our Greater Boston base.
Frequently asked questions
How much does it cost to build an ADU in Westwood MA?
ADU costs in Westwood 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 Westwood property.
Do I need a permit for an ADU in Westwood MA?
Yes — all ADU construction requires building permits. Under the 2024 Massachusetts ADU law, most Westwood properties can add an ADU by-right. We handle all permit applications for Norfolk County on your behalf.