Spring Hill is in unincorporated Hernando County and sits inside the Hurricane-Prone Region under the 8th Edition (2023) Florida Building Code. Hernando County design wind speeds under ASCE 7-22 are approximately 140 mph along the Gulf coast (with 130-140 mph inland in the Tampa Bay region per UF GeoPlan / Florida Building Commission mapping). Inland Spring Hill itself sits at the lower end of that range, while the Hernando County Gulf-front communities (Aripeka, Bayport, Pine Island, Hernando Beach) sit at the upper end. Glazed openings in new construction in the Wind-Borne Debris Region (within one mile of the coast at 130+ mph, or anywhere at 140+ mph) must be protected with impact-rated glazing or approved hurricane shutters tested to ASTM E1886 / E1996 Large Missile (Level D or E) and Small Missile standards. All hurricane shutter installations require a Hernando County building permit.
Florida Building Code (FBC) 8th Edition (2023) Chapter 16 incorporates ASCE 7-22 wind loads and defines two regulatory regions: the Hurricane-Prone Region (any U.S. coastal area where the basic design wind speed is greater than 115 mph) and the Wind-Borne Debris Region (any area within one mile of the coast where the design wind speed is 130 mph or greater, OR any area where wind speed is 140 mph or greater). Per the University of Florida GeoPlan Center wind-speed mapping that supports the 2023 FBC, the Tampa Bay region — including Hernando County — sits in the 130-150 mph design wind speed range under ASCE 7-22 (Risk Category II): roughly 140-150 mph at the Gulf coast and 130-140 mph inland. Spring Hill sits roughly 5-10 miles inland from the Gulf, placing it at the lower end of that range; the unincorporated Gulf-front communities (Aripeka, Bayport, Pine Island, Hernando Beach) sit at the upper end and are squarely inside the Wind-Borne Debris Region. Under FBC 2023 §1609.1.2 (Protection of Openings), all exterior glazed openings in new construction and substantial improvements inside the WBDR must be protected against wind-borne debris using one of: (a) impact-resistant glazing tested to ASTM E1886 (cyclic pressure) and ASTM E1996 (impact) for Large Missile Impact Level D (for buildings up to 30 feet) or Level E (above 30 feet, near grade); (b) shutters with the same testing; OR (c) structural design treating the building as 'partially enclosed' with significantly increased internal pressure coefficients. Hernando County is NOT in the High Velocity Hurricane Zone (HVHZ — only Miami-Dade and Broward counties). Hurricane shutter installations require a building permit issued by the Hernando County Building Department ((352) 754-4050) under the Hernando County Code of Ordinances; permits are required for accordion, roll-down, panel, Bahama, colonial, and impact-rated fabric shutter systems. Florida Building Commission product approval (statewide) or Miami-Dade NOA is required for the specific product. Florida Statute 718.113(5) (condominiums) and 720.3035 (HOAs) allow associations to set aesthetic standards but cannot prohibit hurricane protection consistent with state and federal law.
Installing hurricane shutters without a building permit violates the Hernando County Code and the 8th Edition (2023) Florida Building Code; permit holders can be required to remove and reinstall noncompliant products, and the work will fail final inspection. Building or substantially improving inside the WBDR without opening protection or partially-enclosed design violates FBC §1609.1.2 and is grounds for Stop Work, Special Magistrate fines up to $500/day under FS 162.09, and refusal of Certificate of Occupancy. Federal NFIP and FEMA disaster-assistance consequences attach to substantially damaged buildings repaired without current-code compliance. Insurance carriers may deny windstorm coverage or rate up significantly for buildings without code-compliant opening protection.
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