Spring Hill, FL Building Setbacks & Zoning: Setback Rules (2026)

Hernando County Land Development Regulations (Appendix A Article IV) set the dimensional standards for every residential zoning district. The dominant zoning in Spring Hill is R-1B (Deltona-platted ¼-acre lots): 7,500 sq ft minimum lot area, 75 ft minimum lot width at building line, 25 ft minimum front yard, 10 ft minimum side yard, 20 ft minimum rear yard, 50 ft minimum street frontage (30 ft on a dead-end street), 900 sq ft minimum living area, 35% maximum building area, 35 ft / 2.5 stories maximum height (38 ft in V-Zone coastal flood areas). A critical exception applies to lots created prior to Ordinance 72-3 (1972) and lots on a street with a waterway to the rear: 20 ft minimum front yard, 7 ft minimum side yard, 15 ft minimum rear yard — these reduced setbacks cover most of the original Deltona-platted Spring Hill subdivision (lots platted between 1967 and 1972). Collector and Arterial Roads (defined as US 19, SR 50, US 41, US 98, US 301, CR 578, CR 485, and CR 50, except the area between US 19 and Oak Lake Drive on CR 578) require a 125 ft minimum front yard setback. Other Spring Hill residential districts: R-1A (6,000 sq ft lot, 60 ft width, 25 ft front, 10 ft side, 20 ft rear, 600 sq ft minimum dwelling); R-1C (10,000 sq ft lot, 75 ft width, 25/10/20 setbacks, 900 sq ft minimum dwelling); R-2.5 (13,000 sq ft lot, 75 ft width, 25/10/20 setbacks); RM (Mobile Home Residential — 7,500 sq ft, 75 ft width, 25/10/20, 600 sq ft minimum); R-2 (two-family — 7,500 sq ft for single-family, 12,000 sq ft for two-family, 75 ft width, 25/10/20); R-3 (multi-family — 7,500 sq ft single, 12,000 sq ft two-family, 12,000 sq ft + 3,000 sq ft/unit for 3+ unit multifamily, 75 ft width, 25/10/20, 45% max building area, 45 ft / 3 stories max height); R-4 and RR (same as R-3 on dimensional standards). Detached accessory structures (sheds, detached garages, carports, gazebos) require minimum 5 ft side and rear setbacks under Hernando County Code Appendix A Article II Section 2. Accessory structures must sit behind the principal building's front building line; structures in a secondary front yard must meet the principal-building front setback for the district. Variances are heard by the Hernando County Board of Zoning Adjustment under Article V of Appendix A with a hardship finding required. Florida Statute 553.79 controls building permit standards statewide; FEMA Flood Insurance Rate Maps govern elevation requirements in Special Flood Hazard Areas (large portions of Spring Hill near lakes, Weeki Wachee River, and the coastal zone are Zone X or AE).