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Osceola County, FL Environmental Rules: Flood Zones (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

FEMA flood zone rules in Osceola County, FL, also called floodplain regulations or special flood hazard area (SFHA) rules, determine flood insurance requirements and elevation standards for new construction.

Key Facts

Zone A/AE floor: Base flood elevation + 1 ft, or DFE
Coastal A Zone floor: Base flood elevation + 1 ft, or DFE
AO Zone floor: FIRM depth number, or 2 ft minimum
Below-grade basement floor: Base flood elevation + 1 ft
Variance authority: Board of Adjustment, per FS 553.73(5)
Affidavit permits: Cannot bypass flood construction rules

FEMA Flood Zone Lookup

FEMA assigns every parcel in the U.S. a flood-hazard designation on its Flood Insurance Rate Maps (FIRMs). Zones starting with A or V are high-risk Special Flood Hazard Areas where federally backed mortgages require NFIP flood insurance. Zone X indicates moderate-to-minimal risk, where insurance is optional but often recommended. Your specific zone determines insurance cost, build elevation, and permit requirements in Osceola County, FL.

Zone	What it means	NFIP required?
A	High-risk flood area; 1% annual chance flood, no detailed analysis.	Yes
AE	High-risk; same as A but with established Base Flood Elevations.	Yes
AH	High-risk shallow flooding (1-3 ft), usually ponding.	Yes
AO	High-risk shallow flooding (1-3 ft) with sheet flow on sloping terrain.	Yes
V	High-risk coastal zone subject to wave action (no BFE).	Yes
VE	High-risk coastal zone with wave action and established BFEs.	Yes
X (shaded)	Moderate risk; between the 1% and 0.2% annual chance flood.	Recommended
X	Minimal risk; outside the 0.2% annual chance floodplain.	No

Look up Osceola County, FL on the FEMA flood map

FEMA maps update periodically; verify zone before buying flood insurance or building.

Summary

Osceola County amended the Florida Building Code's flood provisions to set exact elevation floors by flood zone and to route flood-hazard variances to the Board of Adjustment rather than the general codes board.

City-specific rules exist: Kissimmee has its own flood zones rules that differ from Osceola County's county-level regulations. If you live in Kissimmee, check the city-specific page instead.

R322.2.1 Elevation requirements. 1. Buildings and structures in flood hazard areas designated as Zone A (including AE Zones and unnumbered A Zones) shall have the lowest floors elevated to or above the base flood elevation plus 1 foot or the design flood elevation, whichever is higher. 2. Buildings and structures in flood hazard areas designated as Coastal A Zones shall have the lowest floors elevated to or above the base flood elevation plus 1 foot (305 mm), or to the design flood elevation, whichever is higher. 3. In areas of shallow flooding (AO Zones), buildings and structures shall have the lowest floor (including basement) elevated at least as high above the highest adjacent grade as the depth number specified in feet on the FIRM, or at least 2 feet (610 mm) if a depth number is not specified.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 71 | Land Development Code: Supplement 10).

Full Breakdown

Osceola County amended the Florida Building Code's flood provisions when it adopted its technical codes at Code § 5-60(a). 2 applies. 73(5), and expressly withholds that authority from Section 3109 matters. 1 must be coordinated with the county's Floodplain Administrator.

Violations & Fines

Building below the required flood elevation, or without Floodplain Administrator and Board of Adjustment sign-off on a variance, is enforced the same as any other adopted building code violation, punished under the general penalty at § 1-6 (§ 5-59), and the Building Official can refuse to issue, or can revoke, a permit that does not meet Section R322.2.1's elevation floor.

Frequently Asked Questions

How high above the flood elevation must I build in an AE flood zone in Osceola County?

Section R322.2.1, adopted at Code § 5-60(a)(5), requires the lowest floor of a new building in Zone A or AE to sit at or above the base flood elevation plus one foot, or the design flood elevation if that number is higher. The same one-foot-above-BFE standard applies in Coastal A Zones.

Can I get a variance from Osceola County's flood elevation requirements?

Yes, but not from the general board of codes and appeals. Section 117.1 sends flood-hazard variance requests to the Board of Adjustment under the county's local floodplain management ordinance, consistent with F.S. § 553.73(5), and that process does not apply to Section 3109 matters.

Can I skip a survey and just sign an affidavit that my flood-zone home meets code?

No. Section 107.6.1 specifically strips the Building Official's affidavit-based permitting authority away from flood load and flood-resistant construction requirements, because the National Flood Insurance Program rules at 44 C.F.R. §§ 59-60 do not allow it, unlike other parts of the Florida Building Code.

Sources & Official References

[1]Osceola County Code of Ordinances - Municode Library

Other rules in Osceola County

Noise Ordinances: Quiet HoursSome Restrictions Noise Ordinances: Construction HoursSome Restrictions Flood Elevation RequirementsSome Restrictions Stormwater ManagementSome Restrictions Noise Ordinances: Leaf Blower RulesSome Restrictions Noise Ordinances: Vehicle NoiseSome Restrictions Noise Ordinances: Aircraft NoiseFew Restrictions Noise Ordinances: Barking DogsSome Restrictions

All Osceola County rules

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Flood Zones in Cities Across Osceola County

Kissimmee, FL