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Insurance Glossary

Post-FIRM

Property

Definition

A building constructed after the effective date of the first Flood Insurance Rate Map for a community. Post-FIRM buildings are required to meet floodplain management regulations, including elevation requirements, and typically have lower flood risk than Pre-FIRM structures. Flood insurance rates for Post-FIRM buildings are based on actuarial risk and are generally lower than Pre-FIRM rates if the building is properly elevated. These buildings must have an Elevation Certificate to document compliance with local regulations. Post-FIRM construction standards significantly reduce flood damage and insurance costs compared to older, non-compliant structures.

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Related Terms

Pre-FIRM
A building constructed before the effective date of the first Flood Insurance Rate Map (FIRM) for a community. Pre-FIRM buildings were built before current floodplain management regulations and often do not meet modern elevation requirements. These structures typically qualify for subsidized flood insurance rates under the National Flood Insurance Program, though these subsidies are being phased out. Pre-FIRM buildings can maintain grandfathered rates if they met the floodplain management requirements in effect at the time of construction. When Pre-FIRM buildings undergo substantial improvement or substantial damage, they must be brought into compliance with current standards.
FIRM
Flood Insurance Rate Map - an official map created by FEMA that shows flood risk zones, base flood elevations, and floodplain boundaries for a community. FIRMs are used to determine flood insurance requirements and premium rates under the National Flood Insurance Program. These maps identify Special Flood Hazard Areas where flood insurance is mandatory for federally backed mortgages. Property owners can use FIRMs to understand their flood risk and make informed decisions about insurance coverage and property improvements. Maps are periodically updated as flood risk data changes.
Elevation Certificate
An official FEMA document that provides elevation information about a building's lowest floor and the ground elevation around the structure. Prepared by a licensed surveyor or engineer, this certificate is used to determine accurate flood insurance premium rates under the National Flood Insurance Program. Properties built at or above the Base Flood Elevation typically qualify for lower insurance rates. An Elevation Certificate may be required when purchasing flood insurance, refinancing a mortgage, or applying for a Letter of Map Amendment. The certificate is valid indefinitely unless the property or surrounding area is significantly altered.
Base Flood Elevation
The computed elevation to which floodwater is anticipated to rise during a base flood (a flood with a 1% chance of occurring in any given year, also called a 100-year flood). Shown on FEMA Flood Insurance Rate Maps (FIRMs), the BFE is used to determine flood insurance premiums and building requirements. Structures built below the BFE face higher insurance costs and greater flood risk. Local building codes typically require new construction in flood zones to have the lowest floor elevated at or above the BFE. Knowing your property's BFE is crucial for flood risk assessment and insurance decisions.
Actual Cash Value
The repayment value for indemnification due to loss or damage of property; in most cases it is replacement cost minus depreciation.
Depreciation
The decrease in value of property over time due to wear, tear, age, or obsolescence.
Replacement Cost
The cost to replace damaged or destroyed property with new property of similar kind and quality, without deduction for depreciation.
Homeowners Insurance
Insurance coverage that protects your home and personal property against damage, theft, and liability claims.