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Building in a flood zone in Yuba City

Yuba City's own rules on building in a flood zone, with the code text for every value.

Ask about building in a flood zone in Yuba City See coverage

Each rule below links to the section of the Yuba City Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Yuba City's code says

Yuba City code What Yuba City's code adds
Floodplain permit
  • A development permit is required before construction or development begins in a special flood hazard area.
    § 6-9.401 · code text
    A development permit shall be obtained before construction or development begins within any area of special flood hazard established in Section 6-9.302.
Building in a floodway
  • No fill, new building, substantial improvement or other development unless an engineer or architect certifies no rise in flood levels.
    § 6-9.506 · code text
    Prohibit encroachments, including fill, new construction, substantial improvements, and other developments unless certification by a registered professional engineer or architect is provided demonstrating that encroachments shall not result in any increase in flood levels during the occurrence of the base flood discharge.
Height of the lowest floor
  • At least 1 foot above the FIRM depth number, measured from the highest nearby grade.
    Applies: New or substantially improved homes in an AO zone.
    § 6-9.501 · code text
    In an AO zone, elevated above the highest adjacent grade to a height exceeding the depth number specified in ft. on the FIRM, by at least one ft., or elevated at least three ft. above the highest adjacent grade if no depth number is specified;
  • At least 3 feet above the highest nearby grade.
    Applies: New or substantially improved homes in an AO zone when no depth number is given.
    § 6-9.501 · code text
    or elevated at least three ft. above the highest adjacent grade if no depth number is specified;
  • The lowest floor must be at least 1 foot above the base flood elevation.
    Applies: New or substantially improved homes in an A zone with no set base flood elevation.
    § 6-9.501 · code text
    In an A zone where no base flood elevations have been determined, elevated at least one ft. above the base flood elevation, as determined by the floodplain administrator through acceptable methods as listed in FEMA book "Managing Floodplain Development in Approximate Zone A Areas; A Guide for Developing Base (100 year) Flood Elevations";
  • The lowest floor must be at least 1 foot above the base flood elevation.
    Applies: New or substantially improved homes in all other zones.
    § 6-9.501 · code text
    In all other zones, elevated at least one ft. above the base flood elevation.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

What are the rules for building in a Yuba City flood zone?

Yuba City's code: A development permit is required before construction or development begins in a special flood hazard area. (§ 6-9.401); At least 1 foot above the FIRM depth number, measured from the highest nearby grade. (New or substantially improved homes in an AO zone.) (§ 6-9.501).

General information, not legal advice.

Ask about a specific Yuba City property

Ask GoCodebook how Yuba City's building in a flood zone rules apply to your situation and get an answer that cites the section.

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