ADU Construction in Dedham MA — In-Law Suites, Garage Conversions & More
Boston Smart Plastering builds accessory dwelling units throughout Dedham, MA. Dedham is a historic Norfolk County town just 9 miles southwest of Boston, known for its mix of historic village character and modern suburban development. Boston Smart Plastering serves Dedham homeowners across all trades — from traditional plaster restoration in older homes to full kitchen and bathroom renovations. 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 Dedham homeowners can make. Dedham's housing ranges from historic 18th and 19th century homes near Dedham Square to mid-century colonials in Endicott and newer construction near Legacy Place. Older homes require careful plaster restoration and historically appropriate finishing work, while newer homes generate strong demand for kitchen remodeling and ADU construction. 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. Dedham is 9 miles southwest of Boston off Route 1 and I-95, easily accessible and a core part of our Norfolk County service area.
Frequently asked questions
How much does it cost to build an ADU in Dedham MA?
ADU costs in Dedham 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 Dedham property.
Do I need a permit for an ADU in Dedham MA?
Yes — all ADU construction requires building permits. Under the 2024 Massachusetts ADU law, most Dedham properties can add an ADU by-right. We handle all permit applications for Norfolk County on your behalf.