Massachusetts & New Hampshire

ADU Builders in Massachusetts & New Hampshire

FJ Global Custom Builds designs and builds accessory dwelling units, including detached backyard ADUs, attached in-law suites, garage conversions and basement ADUs. Based in Lowell, MA, we serve homeowners within 40 miles, including southern New Hampshire. Explore our local ADU services, cost guide and Massachusetts rules below. FJ Global Custom Builds is an ADU contractor handling ADU construction in Massachusetts and southern New Hampshire, from permits to final inspection.

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ADUs services and guides

ADU Builder Marlborough

ADU Builder Worcester

ADU Builder Nashua

ADU Builder Lowell

ADU Cost in Massachusetts

Massachusetts ADU Rules

ADU builders near me

We come to your property in Massachusetts or southern New Hampshire for a free on-site visit. You receive a written estimate for your ADU project from FJ Global LLC, a licensed Massachusetts contractor with $1M in liability insurance.

Planning an ADU in Massachusetts or southern New Hampshire? Free estimate: (781) 527-9445.

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ADU guides

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