Orlando, FL Accessory Structures: ADU Rules (2026)

Orlando has progressively expanded ADU permissions through Land Development Code amendments aimed at increasing housing supply. ADUs (sometimes called garage apartments, in-law suites, or backyard cottages) are permitted as accessory uses in most R-1, R-2, R-3, and R-3A residential districts subject to zone-specific standards. Typical requirements: the primary dwelling must be a single-family detached home; one ADU per lot; the lot must meet a minimum size depending on district (commonly 5,000 to 7,500 square feet); maximum ADU size is generally 600 to 800 square feet or a percentage (often 33 to 50 percent) of the primary dwelling, whichever is smaller; height limited to one story for detached ADUs in most yards or to the primary dwelling height; setbacks match those for accessory structures (often 5 feet rear/side, more if alley-loaded); minimum separation of 6 to 10 feet from the primary dwelling for detached ADUs; one additional off-street parking space; and the primary dwelling owner must occupy either the primary or accessory unit (owner-occupancy requirement). Construction must comply with the Florida Building Code, including hurricane wind-load design (Risk Category II, 130+ mph in Orlando per FL Stat 553.73 / FBC ASCE 7), impact-rated openings or shutters in wind-borne debris regions, and energy code compliance. Connection to city water and sewer is required (no separate well/septic). The unit must have its own kitchen, bathroom, and sleeping area but typically shares the property's water meter and electric service unless a separate meter is approved. Permit fees include impact fees (school, transportation, sewer), which can run several thousand dollars. ADUs cannot be sold separately from the primary dwelling. Short-term rental of an ADU is restricted - Orlando's STR ordinance generally requires the property to be the owner's homestead and limits STR activity. HOAs may prohibit ADUs through deed restrictions even where zoning allows them. The city has explored further ADU liberalization in recent housing affordability initiatives.