Palm Beach County, FL: flood zone, zoning and property lines by address
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Towns in Palm Beach County: West Palm Beach, Boca Raton, Boynton Beach.
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 Palm Beach County has 215 FIRM panels, the newest effective December 2024; coastal V zones, where waves add to the flood, are mapped along its shore.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Palm Beach house comes from a licensed surveyor and is often on file with the county or city building office (Planning, Zoning and 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 Palm Beach lot shows the same lines the property appraiser draws. Palm Beach County covers about 1,257,165 acres of land and 268,084 acres of water.
Mapped lines are approximate. The Palm Beach County Property Appraiser keeps the parcel record; a licensed surveyor sets the true corners.
An example from the county's own records: parcel 74424311040001750 in West Palm Beach, a lot with one house, about 5,663 square feet as mapped, the house built in 1993. Open it to see every card ParcelSheet draws for a Palm Beach lot.
Zoning
Palm Beach County zones its unincorporated land, and West Palm Beach, Boca Raton, Boynton Beach each zone the land inside their limits. ParcelSheet shows the use the property appraiser lists for the lot and links Planning, Zoning and Building 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 Palm Beach lot can add one depends on its district; Planning, Zoning and Building 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. Palm Beach County is soil survey area FL611, Palm Beach County Area, Florida, last updated August 2026, on Web Soil Survey.
A new or changed septic system in Palm Beach County needs a permit from the Florida Department of Health in Palm Beach County, which tests the soil on the lot itself.
Setbacks
Setbacks in Palm Beach County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; Planning, Zoning and Building gives them for the lot's district, and West Palm Beach, Boca Raton, Boynton Beach for land inside their limits. On the Palm Beach shore, building seaward of the state's Coastal Construction Control Line needs a state permit.
Hazards that apply
- Sinkholes. The Florida Geological Survey lists 12 subsidence incident reports in Palm Beach County (the reports). They are reports, not confirmed sinkholes; ParcelSheet does not rate a lot for sinkholes.
- Storm surge. Palm Beach County has coastal V zones on its FEMA map, so storm surge reaches its shore. The county's evacuation zones are on its emergency management site; ParcelSheet shows the FEMA zone and the 3 ft sea level rise map at the lot.
- Wind. The Florida Building Code sets the design wind speed for a house in Palm Beach County; the building office (Planning, Zoning and Building) applies it at permit.
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Palm Beach lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Palm Beach 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 Palm Beach County has 215 panels, the newest effective December 2024. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Palm Beach 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 Palm Beach 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 Palm Beach County?
Zoning in Palm Beach County is set by the county for unincorporated land and by each city (such as West Palm Beach, Boca Raton) 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 Palm Beach County?
Florida Statute 163.31771 lets counties and cities allow an accessory dwelling unit, and each sets its own rules. In Palm Beach 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 Palm Beach County?
Yes. A new or changed septic system in Palm Beach County needs a permit from the Florida Department of Health in Palm Beach County. ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area FL611 (Palm Beach County Area, Florida).
Next to Palm Beach County: Broward County, Hendry County, Martin County.
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