Know your flood zone. Instantly.

Enter any U.S. address to instantly check FEMA flood zone data. Results show your zone designation (X, A, AE, V, VE), whether flood insurance is likely required, and the risk level. Free, no signup required.

Zone X = minimal risk, no flood insurance required. Zone A/AE = 100-year floodplain, flood insurance required, elevated construction may be needed. Zone V/VE = coastal high hazard, flood insurance required with strict construction standards. Zone B/C = moderate risk.

Flood insurance costs vary by zone: Zone X (minimal risk) is often $400-$800/year if purchased voluntarily. Zone AE (100-year flood) typically costs $2,000-$5,000/year. Zone VE (coastal high hazard) can cost $8,000-$40,000/year. NFIP provides coverage up to $250,000 for residential structures.

Buildability™ uses official FEMA flood zone data updated regularly. However, FEMA maps are periodically revised. Always verify current flood zone status with your local floodplain administrator before making decisions.

If you believe your property was incorrectly mapped, you can apply for a Letter of Map Amendment (LOMA) or Letter of Map Revision (LOMR) through FEMA. This requires a licensed surveyor or engineer to certify that your property is above the base flood elevation. The process takes 60-90 days and costs $500-$5,000.

If your property is in a FEMA Special Flood Hazard Area (zones A, AE, V, VE) and you have a federally backed mortgage, flood insurance is mandatory. Properties in Zone X are not required to carry flood insurance but may choose to. About 25% of flood claims come from outside high-risk zones.

Properties in high-risk flood zones (A, AE, V, VE) typically sell for 4-7% less than comparable properties outside flood zones. Mandatory flood insurance, higher construction costs, and resale difficulty contribute to lower valuations. However, waterfront properties may offset this discount.

A 100-year flood zone (Zone A/AE) has a 1% annual chance of flooding, meaning a 26% chance over a 30-year mortgage. A 500-year flood zone (Zone X-shaded) has a 0.2% annual chance. The 100-year designation requires flood insurance with federally backed mortgages; the 500-year does not.

FEMA updates flood maps on a rolling basis, with major updates every 5-10 years per community. Climate change, new development, and improved data are driving more frequent updates. Check FEMA’s Map Service Center for pending revisions in your area.

Yes, but with restrictions. Building in Zone A/AE requires elevating the lowest floor above the Base Flood Elevation (BFE). Zone V/VE requires elevated construction on pilings or columns. Additional costs range from $10,000-$80,000+ depending on the required elevation. Some areas prohibit new construction in floodways.