ADU Construction in Medford MA — In-Law Suites, Garage Conversions & More
Boston Smart Plastering builds accessory dwelling units throughout Medford, MA. Medford is a diverse and accessible city 5 miles north of Boston — one of Greater Boston's most active renovation markets, with a dense mix of Victorian multi-families, mid-century single-family homes, and active new construction. Boston Smart Plastering regularly serves Medford homeowners and property owners across all 14 service 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 Medford homeowners can make. Medford's housing stock ranges from substantial late Victorian and early 20th century multi-families near Medford Square to mid-century single-family neighborhoods in West Medford and newer construction throughout. The city's significant older housing inventory creates consistent demand for plaster repair, drywall, painting, and kitchen and bathroom renovation. 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. Medford is 5 miles north of Boston, directly accessible from I-93 and Route 16, one of our closest and most frequently served Middlesex County communities.
Frequently asked questions
How much does it cost to build an ADU in Medford MA?
ADU costs in Medford 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 Medford property.
Do I need a permit for an ADU in Medford MA?
Yes — all ADU construction requires building permits. Under the 2024 Massachusetts ADU law, most Medford properties can add an ADU by-right. We handle all permit applications for Middlesex County on your behalf.