Garage conversion rules in Bronx County, NY — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a Bronx garage into living space is a major alteration that requires NYC DOB Alt-1 filing, amended Certificate of Occupancy, and full compliance with habitable-space code. Illegal garage conversions are aggressively pursued by DOB and HPD.
A garage conversion changes the use and occupancy group, so under NYC Building Code it is an Alt-1 project filed by a registered architect or PE. The space must meet minimum 7 ft ceiling height, natural light and ventilation (8 percent of floor area in windows), legal egress, heat, smoke/CO alarms, and energy-code envelope upgrades. Parking requirements under the Zoning Resolution must still be met or a waiver obtained. Illegal conversions commonly result in vacate orders, HPD violations, and fines exceeding $10,000.
Contact your local code enforcement office for specific penalty information.
Bronx County, NY
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See how Bronx County's garage conversions rules stack up against other locations.
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