Accessory Structures in Babylon, NY (2026)
5 verified accessory structures rules for Babylon, New York, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Babylon permits accessory apartments (ADUs) under Town Code Chapter 213 Zoning provisions. Owner must occupy the primary unit, unit must be registered with the town, and parking plus minimum square footage standards apply. Suffolk County has an accessory apartment program that allows conforming ADUs in single-family zones.
Accessory Structures: Adu Rules
Some RestrictionsShed Rules
Sheds under 100 sq ft in Babylon generally do not require a building permit but must meet rear-yard setback of 3-5 feet depending on zoning district. Sheds over 100 sq ft require permit, must meet full setbacks, and cannot exceed lot coverage limits. Prohibited in front yards.
Accessory Structures: Shed Rules
Some RestrictionsGarage Conversions
Garage conversions to habitable space require a Babylon building permit, zoning review, and compliance with NY State Residential Code for habitable rooms (ceiling height, egress, insulation, HVAC, smoke/CO alarms). Converting a garage often requires replacing required off-street parking with an alternative space. Unpermitted conversions are a common code enforcement target.
Accessory Structures: Garage Conversions
Heavy RestrictionsCarport Rules
Carports are considered accessory structures in Babylon and require a building permit, must meet the same setbacks as garages, and cannot be placed in front yards except as part of a driveway extension. Open carports count toward lot coverage but often receive reduced coverage credit.
Accessory Structures: Carport Rules
Some RestrictionsTiny Homes
Tiny homes on foundations must meet NY Uniform Code full residential requirements. Tiny homes on wheels (THOWs) are treated as RVs and cannot be used as permanent dwellings in Babylon residential zones. Minimum dwelling unit size typically 400-500 sq ft in Babylon zoning. No formal tiny home ordinance exists.
Accessory Structures: Tiny Homes
Heavy RestrictionsLooking for Suffolk County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Babylon city rules.
Accessory Structures in Suffolk County →