Flood Maps 101 - Understanding the Basics
Flood insurance premium is based on several factors, primarily flood zone, flood history, building type and age, and elevation. For instance:
  • If a building is in a high-risk area—SFHA—a property owner is likely to pay a higher flood insurance rate than someone in a moderate- to low-risk area.
  • In a high-risk area, the insurance rate will also depend on when a building was built compared to the date of the community’s first FIRM. Some buildings built before the community’s first FIRM, called pre-FIRM, are eligible for subsidized rates.
  • Properties located in moderate-to-low risk areas are still vulnerable to flooding and as such, if they meet eligibility requirements, they can find affordable options under the NFIP.

How Flood Risk Impacts Flood Insurance