NFIP Map Revision Eligibility

The Map Revision Exception allows certain NFIP policyholders to qualify for a reduced waiting period when a building's flood zone designation changes due to a FEMA map revision. This exception reduces the standard 30-day waiting period to a 1-day waiting period, provided the eligibility requirements are met.

Eligibility Requirements

To qualify for the Map Revision Exception, the following conditions must be satisfied:

Requirement	Description
FEMA Flood Map Change	The exception applies only when NFIP Maps are revised.
New SFHA Designation	The revision results in a building being newly designated within a Special Flood Hazard Area where it was previously not in one.
Application within 13 Months	The insurer must receive the Application Form (or endorsement request) and the full amount due within 13 months from the effective date of the flood map revision.
Eligible Buildings	The exception applies to all eligible buildings, including those owned by condominium associations.

If these eligibility requirements are not met, then the Standard 30-day Waiting Period will apply.

Validation with Flood Zone Determinations

Flood Zone Determinations can be used to validate eligibility for the Map Revision Exception.

Three areas on the document should be reviewed to confirm eligibility.

1. Current Flood Zone
2. Current Map Revision Date
3. Prior Flood Zone

In the image above, the property is eligible for the Map Revision Exception so long as application/request and premium are received before December 24, 2025.

Review the sections below for more information about how these details confirm eligibility.

Flood Map Changes

First, there must be a Physical Map Revision of either a Flood Hazard Boundary Map (FHBM) or a Flood Insurance Rate Map (FIRM).

If the zone is changed by means of a Letter of Map Amendment (LOMA) or a Letter of Map Revision (LOMR), then the property does not qualify for the Map Revision Exception.

Also, local zoning and planning offices do not have the authority to authorize NFIP map revisions. A community that equivocates a local map change to an NFIP map change does not grant eligibility for the Map Revision Exception to any property under its jurisdiction.

New SFHA Designation

Next, the Physical Map Revision must result in a zone designation change for a specific building. This means that:

1. The previous flood zone did not classify the property within an SFHA.
2. The updated flood map now places the property inside an SFHA.

Flood Hazard Boundary Maps do not contain flood zones, so remapping from FHBMs into SFHAs qualifies for Map Revision.

Eligible Scenarios

Before the Map Revision	After the Map Revision
Example 1: FHBM to FIRM/Zone AE
A homeowner’s property was located in an Emergency Program community with a Flood Hazard Boundary Map (FHBM).	A new Flood Insurance Rate Map (FIRM) was created for the community that placed the home in Zone AE (a SFHA).
Example 2: Zone B to Zone VE
A coastal property was in Zone B, which carries a lower flood risk and does not require flood insurance for federally backed loans.	Due to erosion and updated flood modeling, FEMA reclassifies the area as Zone VE, a high-risk coastal flood zone.

Ineligible Scenarios

Before the Map Revision	After the Map Revision	Criteria for Ineligibility
Example 1: FHBM to FIRM/Zone X
A homeowner’s property was located in an Emergency Program community with a Flood Hazard Boundary Map (FHBM).	A new Flood Insurance Rate Map (FIRM) was created for the community that placed the home in Zone X (a Non-SFHA).	Although there was a Physical Map Revision, the property is in a Non-SFHA. NFIP coverage is voluntary.
Example 2: Zone AE to Zone VE
A coastal property was in Zone AE, which carries a moderate flood risk.	Due to erosion and updated flood modeling, FEMA reclassifies the area as Zone VE, a high-risk coastal flood zone.	The property was already in a SFHA prior to the map revision.
Example 3: Zone AE to Zone C
An urban property was in Zone AE, which carries a moderate flood risk.	Due to community earthworks projects, FEMA reclassifies the area as Zone C, a low risk zone.	The zone went from a SFHA to a Non-SFHA, making NFIP coverage optional.

Application and Premium within 13 Months

Finally, the insurer must receive the Application Form and full premium payment within 13 months of the effective date of the Physical Map Revision.

If the application and payment are submitted after the 13-month window, the property is no longer eligible for the Map Revision Exception, and the standard 30-day waiting period applies.

This deadline is strictly enforced, and no extensions or exceptions are granted. Property owners and agents must verify the FIRM revision date and ensure timely submission to benefit from the 1-day waiting period under this exception.

Requirement	Details
Triggering Event	FEMA revises a Flood Insurance Rate Map (FIRM) or Flood Hazard Boundary Map (FHBM), reclassifying a property from a lower-risk flood zone into a Special Flood Hazard Area (SFHA).
Eligibility Window	The NFIP insurer must receive the Application Form and full premium payment within 13 months from the map revision’s effective date.
Waiting Period Reduction	If all conditions are met within the 13-month period, the standard 30-day waiting period is reduced to 1 day.
Late Applications (Beyond 13 Months)	If the policy application and premium payment are received after the 13-month window, the 30-day waiting period applies, and the Map Revision Exception does not apply.

Additional Resources

• Waiting Periods
• NFIP Effective Date Calculation

This page contains information about the NFIP. Find more NFIP Resources.