LOMA: natural ground
A Letter of Map Amendment generally addresses a property or structure on naturally high ground. It is an official FEMA determination, based on a complete application and supporting evidence.
LOMR-F: land raised by fill
A Letter of Map Revision Based on Fill addresses qualifying land or buildings elevated by fill. The criteria and documentation differ from those of a LOMA; local floodplain rules continue to matter.
What happens to insurance
A successful removal from the Special Flood Hazard Area may affect the federal purchase requirement. Your lender can still require coverage. Speak with the lender and insurer before cancelling a policy.