ADU Construction in Hingham MA — In-Law Suites, Garage Conversions & More
Boston Smart Plastering builds accessory dwelling units throughout Hingham, MA. Hingham is one of the South Shore's most prestigious communities — a historic, affluent town 17 miles southeast of Boston known for its beautiful harbor, historic Main Street, and an exceptionally active high-end renovation and construction market. Boston Smart Plastering serves Hingham homeowners on premium 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 Hingham homeowners can make. Hingham's housing stock ranges from 17th and 18th century historic homes in the town center to grand Victorians along Main Street, substantial mid-century colonials in residential neighborhoods, and significant new construction. The town's affluent character supports demand for specialized plaster restoration, high-end kitchen and bathroom renovation, ADU construction, and premium exterior work. Under Massachusetts ADU law, most single-family properties in Plymouth County can now add an ADU by-right. Boston Smart Plastering handles the full build — design, permitting, construction, and Certificate of Occupancy. Hingham is 17 miles southeast of Boston via Route 3A — a core part of our Plymouth County and South Shore service area.
Frequently asked questions
How much does it cost to build an ADU in Hingham MA?
ADU costs in Hingham 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 Hingham property.
Do I need a permit for an ADU in Hingham MA?
Yes — all ADU construction requires building permits. Under the 2024 Massachusetts ADU law, most Hingham properties can add an ADU by-right. We handle all permit applications for Plymouth County on your behalf.