Garage conversion rules in Santa Rosa County, FL — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a detached garage or accessory building into living space in the unincorporated county turns it into a guest cottage/ADU once it has a stove or oven, triggering LDC 5.02.06 cottage standards and full Florida Building Code review.
Santa Rosa County's LDC defines a private garage as a detached accessory building or portion of the principal building for vehicle storage. If you convert an accessory building to living quarters, LDC 5.02.06 controls: an accessory structure with a stove and/or oven is defined as a guest cottage, and 'guest house or guest cottage must meet the requirements of the Florida Building Code including the conversion of an accessory structure.' The resulting cottage cannot exceed 50% of the main dwelling's floor area, needs a 60-foot front setback (or to sit behind the home's rear wall), and must keep the home's side/rear setbacks. Converting an attached garage to a habitable room is a building-permit alteration under the Florida Building Code. Cities
An unpermitted conversion violates the LDC and Florida Building Code; the county may require permits, inspection, correction, or reversal and levy code-enforcement fines.
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