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Fullerton, CA Environmental Rules: Flood Zones (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

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

Key Facts

Governing section
FMC § 14.01.015(A)
Administering official
City Engineer
Source flood study
FEMA Orange County FIS, Dec. 3, 2009
Violation classification
Misdemeanor
Permit scope
All construction/development in flood hazard areas

Summary

Fullerton requires a permit before any construction or development proceeds within a mapped area of special flood hazard, under Fullerton Code of Ordinances Section 14.01.015. The city adopts FEMA's Orange County Flood Insurance Study, dated December 3, 2009, and its flood insurance rate maps to define which parcels are regulated.

(b) Scope. The following rules and regulations shall apply to all building permits and other permits to perform any work within flood hazard areas identified in the city.

(c) Permit required. A permit shall be obtained before proceeding with any construction or development, as defined in division (B) below, within any area of special flood hazard established pursuant to division (A)(9)(a) above.

Full Breakdown

015 implements the National Flood Insurance Program locally. It adopts by reference the areas of special flood hazard identified in the Flood Insurance Study for Orange County, California and Incorporated Areas, dated December 3, 2009, along with the accompanying Flood Insurance Rate Maps and all later amendments, on file with the city's Public Works Department/Engineering Division at 303 West Commonwealth Avenue and at the FEMA Map Services Center. Division (A)(9)(c) states that a permit shall be obtained before proceeding with any construction or development within any area of special flood hazard established under the section, and division (A)(9)(b) extends that scope to all building permits and other permits for work performed inside a mapped flood hazard area, not construction alone.

The City Engineer administers the program and coordinates with the Building Official to enforce the flood provisions of the building code; duties spelled out in division (C) include reviewing every permit request for compliance with National Flood Insurance Program goals, obtaining and using the best available base flood elevation data for Zone A projects, and ensuring no building permit is issued off a conditional letter of map amendment or revision. Violating the section, including violating any condition or safeguard attached to a flood-area permit, is expressly declared a misdemeanor under division (A)(4), and the ordinance does not intend to weaken any stricter provision found elsewhere in the zoning code, subdivision regulations or building code: division (A)(5) directs that whichever rule is more restrictive controls when there is a conflict.

Violations & Fines

Building or developing inside a mapped area of special flood hazard without the Section 14.01.015 permit, or violating a condition attached to one, is a misdemeanor under division (A)(4). A structure or development lacking the elevation certificate or other compliance documentation the section requires is presumed to be in violation until the owner produces that documentation to the City Engineer.

Frequently Asked Questions

Do I need a permit to build in a Fullerton flood zone?
Yes. Fullerton Code of Ordinances Section 14.01.015(A)(9)(c) requires a permit before proceeding with any construction or development within an area of special flood hazard, and division (A)(9)(b) extends that permit requirement to any other permitted work performed inside a mapped flood hazard area.
Which map does Fullerton use to decide if my property is in a flood zone?
The city adopted by reference the Flood Insurance Study for Orange County, California and Incorporated Areas, dated December 3, 2009, and its accompanying Flood Insurance Rate Maps, plus all later amendments. Copies are on file with Public Works/Engineering at 303 West Commonwealth Avenue and at the FEMA Map Services Center.
What happens if I build in a flood hazard area without the required permit?
It is a misdemeanor under Section 14.01.015(A)(4), and the city can take lawful action to prevent or remedy the violation. A property lacking the elevation certificate or other compliance documentation required by the section is presumed to be in violation until that documentation is provided to the City Engineer.

Sources & Official References

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