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Alex King Group

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ALEX KING Group of PREMIERE PLUS REALTY brings deep Southwest Florida expertise and $550M in sales to every client. From waterfront Naples homes to pet-friendly Bonita Springs condos to Fort Myers Beach getaways, we guide you with local knowledge and tech-forward tools. Click, text, call!

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The FEMA 50% Rule

The FEMA 50% Rule is a federal regulation prohibiting substantial improvements to structures in Special Flood Hazard Areas that exceed 50% of market value unless full flood compliance is achieved. The rule defines substantial improvement, market value assessment methods, and exemptions for safety, historic preservation, and storm damage mitigation projects in Florida.

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Summary

The FEMA 50% Rule is a federal regulation prohibiting substantial improvements to structures in Special Flood Hazard Areas that exceed 50% of market value unless full flood compliance is achieved. The rule defines substantial improvement, market value assessment methods, and exemptions for safety, historic preservation, and storm damage mitigation projects in Florida.

Tags

fema-50-percent-rule · flood-compliance · substantial-improvement · special-flood-hazard-areas · florida-building-code · market-value · flood-insurance

Key entities

FEMA (organization, 0.99) · National Flood Insurance Program (organization, 0.95) · Florida (location, 0.99) · City of Tampa (location, 0.98) · Florida Division of Historic Resources (organization, 0.92) · Special Flood Hazard Areas (concept, 0.98) · Base Flood Elevation (concept, 0.97) · substantial improvement (concept, 0.99)

Classification

reference · language en · status final

Provenance

claude-haiku-4-5 via @stacklist/be@0.1.0, confidence 0.85, 27 Jul 2026