5 county-level rules, plus city-specific rules for 4 cities in Brevard County, Florida.
Verified from official government sources
Brevard County does not permit standalone ADUs by right. A guesthouse is allowed as living quarters in a detached accessory building for family or temporary guests, but may not have separate utility meters or be rented. Florida's new ADU mandate will require county adoption by December 2026.
Brevard County Section 62-2100.5 regulates accessory building standards. Total floor area of all detached accessory buildings cannot exceed the principal structure's floor area. Lots of one acre or more may expand to 1,000 sq ft per building administratively. Sheds under 120 sq ft are exempt from building permits.
Garage conversions in unincorporated Brevard County require building permits. Since ADUs are not currently permitted by right, converting a garage to an independent dwelling unit is not allowed. Conversions to non-dwelling accessory uses must comply with Florida Building Code and zoning requirements.
Brevard County requires a building permit for carports. Must meet Florida Building Code wind-load requirements (140-150 mph). Setbacks 7.5 ft side and 25 ft front in typical residential zones. Counts toward lot coverage.
Brevard County allows tiny homes on permanent foundations meeting Florida Building Code Appendix Q (under 400 sq ft). Tiny homes on wheels classified as RVs and restricted to RV parks. Minimum dwelling size 600 sq ft in most zones.
4 cities in Brevard County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
See every category we cover for Brevard County — parking, noise, fences, fires, animals, pools, and more.
Brevard County Ordinance Hub →