Current Codes and Useful Links Page ContentCodes Florida Building CodeLee County Land Development Code Resources Opening a Commercial Business Frequently Asked Questions 50% Rule: Substantial Improvement/Substantial Damage: If your home or business is in the Special Flood Hazard Area (SFHA) and is not flood compliant (i.e. structure is below Freeboard, which is FEMA BFE + 1 foot), Unincorporated Lee County has flood damage prevention regulations that may affect how you remodel, renovate, or add on to your building. Residential FEMA Calculation Valuation Table Other Agency Links Official Site of the Florida Legislature Florida Department of Business and Professional Regulation Building Officials Association of Florida Federal Emergency Management Agency Lee Building Industry Association Florida Board of Professional Engineers Florida Department of Economic Opportunity Municipal Code Corporation International Code Council (ICC) Quick Links More ›› No