ADU rules in Broome County, NY — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Broome County towns regulate ADUs through local zoning. Binghamton Zoning Code allows accessory apartments in R-1 and R-2 districts with special permit. Owner occupancy of principal dwelling typically required.
Most Broome County municipalities permit one accessory dwelling unit per lot subject to minimum lot area, off-street parking, and owner-occupancy conditions. Town of Union allows ADUs in AR-40 and R-15 districts. Maximum ADU size typically 800 sq ft or 35 percent of principal dwelling. Contact Broome County at (607) 778-2000 for enforcement.
Contact your local code enforcement office for specific penalty information.
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See how Broome County's adu rules rules stack up against other locations.
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