Charleston, SC real-estate risk
Charleston, SC (Charleston County) carries a FEMA National Risk Index score of 98.6/100 — rated "Relatively High" — driven mainly by coastal flood and hurricane, with roughly $500M in expected natural-hazard losses per year (FEMA NRI, 2025).
Hazard scores (0–100)
Expected annual loss
$500M/yr
all natural hazards, county-wide
Buildings-only loss
$412M/yr
the part that hits owners + insurers
What it means for insurance
Coastal flood and hurricane exposure make property insurance the swing cost in this market — premiums and deductibles here can move a deal's NOI by double digits. Treat the insurance binder as a Day-1 diligence item.
Charleston risk — FAQ
Is Charleston, SC a high-risk area for real estate?
Charleston scores 98.6/100 on FEMA's National Risk Index — rated "Relatively High" versus all US counties. Its expected natural-hazard loss is about $500M per year.
What is the biggest natural hazard in Charleston?
The highest-rated hazard is coastal flood (99.8/100), followed by hurricane (99.6/100).
How does hazard risk affect property insurance in Charleston?
Coastal flood and hurricane exposure make property insurance the swing cost in this market — premiums and deductibles here can move a deal's NOI by double digits. Treat the insurance binder as a Day-1 diligence item.
Scan a Charleston property — free
Drop in any Charlestonaddress and PropHunt's AI pulls the cap rate, comps, permit history and the full hazard/insurance read — no card required.
Source: FEMA National Risk Index (Counties), v1.20 (2026-06-13). Scores are national percentiles (0–100). Insurance commentary is PropHunt's interpretation of the hazard data, not an insurance quote.
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