Osceola County, FL: flood zone, zoning and property lines by address
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Towns in Osceola County: Kissimmee, Poinciana, Saint Cloud.
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 Osceola County has 66 FIRM panels, the newest effective June 2013; 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 an Osceola house comes from a licensed surveyor and is often on file with the county or city building office (Building, Licensing, Permitting).
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 an Osceola lot shows the same lines the property appraiser draws. Osceola County covers about 849,498 acres of land and 114,311 acres of water.
Mapped lines are approximate. The Osceola County Property Appraiser keeps the parcel record; a licensed surveyor sets the true corners.
An example from the county's own records: parcel 212529142000010059 in Kissimmee, a lot with one house, about 10,977 square feet as mapped, the house built in 1965. Open it to see every card ParcelSheet draws for an Osceola lot.
Zoning
Osceola County zones its unincorporated land, and Kissimmee zones the land inside its limits. ParcelSheet shows the use the property appraiser lists for the lot and links Planning and Design 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 an Osceola lot can add one depends on its district; Planning and Design 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. Osceola County is soil survey area FL097, Osceola County, Florida, last updated August 2026, on Web Soil Survey.
A new or changed septic system in Osceola County needs a permit from the Florida Department of Health in Osceola County, which tests the soil on the lot itself.
Setbacks
Setbacks in Osceola County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; Planning and Design gives them for the lot's district, and Kissimmee for land inside its limits.
Hazards that apply
- Sinkholes. The Florida Geological Survey lists 16 subsidence incident reports in Osceola 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 Osceola County; the building office (Building, Licensing, Permitting) applies it at permit.
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near an Osceola lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Osceola 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 Osceola County has 66 panels, the newest effective June 2013. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Osceola 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 Osceola 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 Osceola County?
Zoning in Osceola County is set by the county for unincorporated land and by each city (such as Kissimmee) 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 Osceola County?
Florida Statute 163.31771 lets counties and cities allow an accessory dwelling unit, and each sets its own rules. In Osceola 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 Osceola County?
Yes. A new or changed septic system in Osceola County needs a permit from the Florida Department of Health in Osceola County. ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area FL097 (Osceola County, Florida).
Next to Osceola County: Brevard County, Highlands County, Indian River County, Lake County, Okeechobee County, Orange County, Polk County.
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