The City of Key West, Florida

The Southernmost City in the Continental United States


Substantial Improvement Forms & Publications

Important Note:  Each building needs its own Building Permit Application, even if they're on the same lot.  Only one set of plans is needed, not a set for each application. 

A casual connection between buildings - such as an extended roof or breezeway doesn't equate to a single building. (The Property Appraiser's diagrams may indicate a single building for structures that are separate buildings for floodplain management purposes. 

City Procedure for Substantial Improvement/Damage Determinations

Non-Conversion Agreement (paper version)

Non-Conversion Agreement (fillable ver.)

Substantial Improvement Brochure

FEMA P-758, Substantial Improvement/Substantial Damage Desk Reference (2010)


Contact Us

Scott Fraser,
FEMA Coordinator/Floodplain Administrator
Building Department
1300 White St
Key West, FL 33040
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