ADU rules in Osceola County, FL — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Unincorporated Osceola County allows one accessory living unit (ALU) or guest home per conforming lot. It may be rented only if the primary home has a homestead exemption, and only for long-term tenancy — short-term rental of an ALU is prohibited.
Under the Land Development Code (LDC Sec. 3.6.1), an ALU/guest home may be attached or detached, must be architecturally compatible with the main house, and requires architectural drawings plus a surveyor's plat. Only one ALU is permitted per conforming lot. Maximum air-conditioned size is the lesser of 60% of the primary structure or, on lots under 1.0 acre, 1,000 sq. ft.; lots of 1.0 acre or more have no square-foot cap. ALUs meeting these standards are not counted toward density. Inside Kissimmee or St. Cloud, the city's ADU rules govern instead.
Building/zoning permits required; construction or rental of a non-compliant ALU is a Land Development Code violation enforced by Osceola County Code Enforcement (Chapter 7).
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Osceola County's adu rules rules stack up against other locations.
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