Answer first: A flood zone on FEMA's map is a mapping designation, not a survey of the ground under one house. When a Merritt Island parcel appears in a Special Flood Hazard Area but the structure sits at or above the base flood elevation on natural grade, the owner can ask FEMA for a Letter of Map Amendment, or LOMA. Where fill material created the height, the request is a Letter of Map Revision based on fill, or LOMR-F. FEMA decides, a survey supplies the evidence, and neither an agent nor a lender can promise the result.
Buyers and owners ask the LOMA question for a practical reason: lender flood requirements and insurance rating follow the official map until FEMA changes it for the specific property, so a determination can change what a lender requires. It does not change the weather, the drainage next door, or what a future buyer will assume, which is why the verification steps below matter as much as the paperwork.
Start with the map that actually governs
Look up the parcel on FEMA's Flood Map Service Center, which publishes the current effective Flood Insurance Rate Map and the panel that covers the address. Note the zone, the panel number, and whether the map has been revised. A lender's requirement and an insurance quote both trace back to this map, so the file should start with a copy of the panel and its data rather than with a listing's flood disclosure. The site's flood zone versus evacuation zone guide explains how the mapping system differs from the evacuation system the county uses for orders.
What a LOMA asks FEMA to find
A LOMA asks FEMA to amend the map for a specific structure or lot because the natural ground elevation at the site is at or above the base flood elevation shown for that area. FEMA publishes the process on its Letter of Map Amendment and LOMR-F page: a single residential lot or structure uses the MT-EZ form, multiple lots or structures use the MT-1 forms package through FEMA's Online LOMC application, and the evidence is elevation data, typically from a licensed surveyor. The request may be submitted by the property owner or an authorized representative.
Two limits matter. First, the review turns on elevations: grade elevations, the base flood elevation, and, for structures, the lowest floor. Second, a LOMA addresses natural grade only. If the elevation next to the structure is the result of fill placed under or around it, the LOMA path does not apply; the fill-based path does.
What a LOMR-F adds to the question
A LOMR-F asks FEMA to remove a structure or lot from the flood area on the basis of fill that was placed and compacted according to applicable standards. That history is documentary: fill permits, compaction records, and as-built information tell FEMA whether the fill qualifies. On a Merritt Island lot where a previous owner brought in fill to build a pad, the question is not whether the yard looks high, it is whether the fill file exists and supports the request. Buyers should ask for those records during due diligence, because they are either in the property file or they are a research project.
Who does what in the process
The surveyor produces the elevation data, usually on FEMA's elevation certificate form, which the site's enclosed lower level and elevation certificate guide explains in the waterfront context. FEMA reviews the application and issues or declines the determination. The lender decides what it requires in the meantime, and an insurance professional rates the property under the rules that apply today, including the National Flood Insurance Program rules described on FloodSmart. A homeowner can start the request, but the professional inputs belong to licensed surveyors, and the decisions belong to FEMA, the lender, and the insurer respectively. No participant in a real estate transaction can promise the outcome, and a contract should never assume one.
Sequencing the request in a Brevard purchase
Timing is the practical problem. A survey and elevation data can be ordered during the inspection period, but FEMA review takes longer than a typical closing, so buyers should treat any LOMA as a post-closing project unless the seller already holds a determination. Three contract habits keep it clean: verify the current zone from the map service center during due diligence; ask the seller for any existing survey, elevation certificate, LOMA, or fill records; and write the offer so that financing and insurance assumptions do not depend on a determination no one has requested yet. The site's closing timeline guide shows how inspection-period research fits the financed purchase calendar.
Keep the determination with the property records
A determination, once issued, becomes part of the property's permanent file alongside the survey, permits, and elevation certificate, and future sales and refinances draw on it. Owners should also keep the drainage picture in perspective: a LOMA addresses the mapped flood designation, not the drainage behavior of the canal system or the street, which the site's outfall and drainage guide covers separately.
Flood map verification checklist
- Pull the current FEMA panel and zone from the Flood Map Service Center for the exact parcel.
- Ask the seller for any existing survey, elevation certificate, LOMA, LOMR, or fill and compaction records.
- Engage a licensed surveyor to produce the elevation data if the map and the site disagree.
- Use FEMA's MT-EZ or MT-1 route, matching the single-lot or fill-based situation.
- Confirm lender and insurance requirements separately; they follow the effective map until FEMA acts.
- File the determination with the permanent property records for future transactions.
Frequently asked questions
Does a LOMA guarantee flood insurance is not needed?
No. A LOMA changes the mapped designation for the property, and lender requirements and insurance decisions follow their own rules. Property owners should confirm with their lender and a licensed insurance professional what applies after any determination.
Can a buyer request a LOMA before closing?
The process is available to owners and their representatives, and elevation work can start during due diligence, but FEMA review generally takes longer than a closing window, so most buyers complete the request after closing rather than making the purchase depend on it.
What is the difference between a LOMA and a LOMR-F?
A LOMA is based on natural ground elevation; a LOMR-F is based on fill placed under applicable standards. FEMA's guidance pages describe which forms apply to each situation.
Does a LOMA change the drainage or storm behavior of the lot?
No. It changes the map designation for the property. Drainage, outfalls, and storm behavior are separate physical facts that should be evaluated on their own.
Let the map and the ground be measured, not assumed
Carrie Liotta, Realtor with Real Broker, helps Merritt Island waterfront buyers organize map checks, survey and elevation work, and the records file that supports a LOMA request. Schedule a consultation with Carrie to sequence the verification for a specific property. Flood map determinations belong to FEMA, lender requirements to lenders, and insurance rating to licensed insurance professionals.