Rising flood insurance costs strain South Carolina coast

Summary

Higher flood insurance premiums are squeezing South Carolina coastal homeowners as policy counts decline and risks rise.

Why this matters

The story shows how rising flood insurance costs are affecting housing affordability and financial decisions in South Carolina’s coastal communities. It also highlights the gap between mapped flood zones and broader flood risk, which can matter for buyers, homeowners, and local officials.

Flood insurance costs rose for many South Carolina coastal homeowners as rates increasingly reflected property-level risk, prompting some residents to switch insurers, refinance, or drop coverage.

South Carolina had 193,541 National Flood Insurance Program policies in 2025, down from 198,232 in 2024, while the average annual premium rose to $743 from $695, according to the state Department of Insurance. FEMA data also showed that, in the southern Atlantic region excluding Florida, South Carolina had some of the highest average coastal payments. In 2025, the average annual payment was $4,199 in Pawleys Island, $2,078 in Georgetown, $1,216 in Surfside Beach, $1,142 in Beaufort, and $913 in Hilton Head Island.

FEMA changed its pricing model in 2021 to Risk Rating 2.0, which aimed to better match premiums to risk. The agency said some policyholders paid less under the new system, while others saw increases. Policies in force before 2021 remained on a glide path, with annual increases of up to 18% to 25% until they reached full risk-based rates.

Flood insurance is required for homes in Special Flood Hazard Areas with federally backed mortgages. Standard homeowners insurance does not include flood coverage, and FEMA said nearly one-third of claims over the last decade came from outside high-risk zones.

First Street, which includes climate change in its modeling, estimated that more than 200,000 properties in Horry, Georgetown, Charleston, and Beaufort counties face flood risk over the next 30 years, while nearly 150,000 face major, severe, or extreme risk. During Hurricane Florence in 2018, nearly 26,000 properties in those counties were flooded; Hurricane Matthew damaged more than 27,500 in 2016.

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