Gainesville, FL Accessory Structures: ADU Owner Occupancy (2026)

The Gainesville LDC (Chapter 30) classifies ADUs as accessory uses subordinate to the principal single-family dwelling in the RSF-1 through RSF-4 and RMF residential districts. Under Florida zoning doctrine, an accessory use cannot exist independently of its principal use, meaning the lot must continue to function as a single-family residential parcel with the main dwelling occupied as a single household. The LDC limits each parcel to one ADU and historically conditions ADU approval on owner occupancy of either the principal dwelling or the ADU itself — typically demonstrated by Alachua County homestead exemption status, voter registration, driver's license, and GRU account holder. Florida HB 1031 (Fla. Stat. § 163.31771, 2024) creates statewide ADU policy encouraging local governments to remove or relax owner-occupancy requirements as a barrier to ADU construction, but the act stops short of automatic preemption of existing local owner-occupancy rules. Fla. Stat. § 166.04151 (Affordable Housing) provides additional flexibility for ADUs meeting affordability criteria. HOA covenants under Fla. Stat. Chapter 720 may impose stricter private owner-occupancy rules in covenanted neighborhoods such as Haile Plantation, Oakmont, Town of Tioga, and Mile Run. UF student-rental considerations: Gainesville's University of Florida and Santa Fe College student-rental market — particularly the College Park, Pleasant Street, University Heights, and SW 13th Street corridors — produces heightened scrutiny of ADU configurations that could function as duplexes near campus, and the city's 'unrelated persons' definition under the LDC limits the number of unrelated adults sharing a single dwelling unit.