Lafayette County, FL: flood zone, zoning and property lines by address
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Towns in Lafayette County: Mayo.
Flood zone by address
ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA's countywide study for Lafayette County has 74 FIRM panels, the newest effective October 2017; no coastal V zones are mapped in it.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Lafayette house comes from a licensed surveyor and is often on file with the county or city building office (Building).
Property lines
The parcel outline, parcel number and mapped size come from the Florida statewide cadastral (county property appraiser parcels with the Department of Revenue tax roll), so a Lafayette lot shows the same lines the property appraiser draws. Lafayette County covers about 347,741 acres of land and 2,920 acres of water.
Mapped lines are approximate. The Lafayette County Property Appraiser keeps the parcel record; a licensed surveyor sets the true corners.
An example from the county's own records: parcel 1305110011079000010 in Mayo, a lot with one house, about 41,818 square feet as mapped, the house built in 1977. Open it to see every card ParcelSheet draws for a Lafayette lot.
Zoning
Lafayette County zones its unincorporated land, and Mayo zones the land inside its limits. ParcelSheet shows the use the property appraiser lists for the lot and links the county planning office for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Florida Statute 163.31771 lets local governments allow an accessory dwelling unit on a lot with a house. Whether a Lafayette lot can add one depends on its district; the county planning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Lafayette County is soil survey area FL067, Lafayette County, Florida, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Lafayette County needs a permit from the Florida Department of Health in Lafayette County, which tests the soil on the lot itself.
Setbacks
Setbacks in Lafayette County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county zoning office gives them for the lot's district, and Mayo for land inside its limits.
Hazards that apply
- Sinkholes. The Florida Geological Survey lists 15 subsidence incident reports in Lafayette County (the reports). They are reports, not confirmed sinkholes; ParcelSheet does not rate a lot for sinkholes.
- Wind. The Florida Building Code sets the design wind speed for a house in Lafayette County; the building office (Building) applies it at permit.
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Lafayette lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Lafayette County?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA's countywide flood map for Lafayette County has 74 panels, the newest effective October 2017. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Lafayette County?
Open the Florida map, type the address, and the parcel outline from the county property appraiser shows on the map with its parcel number and mapped size. The Lafayette County property appraiser keeps the official record. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Lafayette County?
Zoning in Lafayette County is set by the county for unincorporated land and by each city (such as Mayo) inside its own limits. ParcelSheet shows the use code the property appraiser lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Lafayette County?
Florida Statute 163.31771 lets counties and cities allow an accessory dwelling unit, and each sets its own rules. In Lafayette County ask the zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Lafayette County?
Yes. A new or changed septic system in Lafayette County needs a permit from the Florida Department of Health in Lafayette County. ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area FL067 (Lafayette County, Florida).
Next to Lafayette County: Dixie County, Gilchrist County, Madison County, Suwannee County, Taylor County.
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