Under federal law, the purchase of flood insurance is mandatory for all federal or federally related financial assistance for the acquisition and/or construction of buildings in high-risk flood areas (Special Flood Hazard Areas or SFHAs).
The amount of flood insurance coverage required by the Flood Disaster Protection Act of 1973, as amended by the National Flood Insurance Reform Act of 1994, is the lesser of the following:
If the property is not in a high-risk area, but instead in a moderate-to-low risk area, federal law does not require flood insurance; however, a lender can still require it. In fact, over 20-percent of all flood insurance claims come from areas outside of mapped high-risk flood zones. Note that if during the life of the loan the maps are revised and the property is now in the high-risk area, your lender will notify you that you must purchase flood insurance.