Substantial Improvement/Damage Requirements

The NFIP requires that a building must meet the same construction requirements as a new building if the cost of reconstruction, rehabilitation addition, or other improvements to a building equals or exceeds 50% of the building's market values.

Substantially damaged buildings are those in which the cost of repairs equals or exceeds 50% of the building's value prior to its being damaged. These buildings must be elevated above the base flood elevation.