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Addition

An addition is an improvement that increases the square footage of a structures. These include lateral additions added to the side or rear of a structure, vertical additions added on top of a structure and enclosures added underneath a structure. NFIP regulations for new construction apply to an addition that is considered to be a substantial improvement to a structure. Some states and communities require that all additions, regardless of their size, meet those requirements.

National Flood Insurance Program Requirements

  • 59.1 - Definition
  • 60.3 - Flood plain management criteria for flood-prone areas
    • (a) (1) - Development Permit
    • (a) (3) - Reasonably Safe From Flooding
    • (c) (2) - A Zone Residential Buildings
    • (c) (3) - A Zone Nonresidential Buildings
    • (c) (5) - Openings
Glossary Section
NFIP - National Flood Insurance Program
Last updated Jul 7, 2020