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Wildomar · Building on your lot

Building in a flood zone in Wildomar

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

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

What Wildomar's code says

Wildomar code What Wildomar's code adds
Floodplain permit
  • A separate floodplain application and fee are needed for permits allowing a structure, substantial improvement, grading or an RV.
    Applies: Land in mapped flood areas when the regular permit process has no flood control district recommendation.
    § 15.96.050 · code text
    If a permit would allow the location of any structure or substantial improvement thereto, or allow the alteration of land by grading or otherwise, or allow the placement of a recreational vehicle pursuant to Section 15.96.060(B)(6), and the existing procedure does not provide for a specific recommendation by a flood control district, a separate application shall be filed by the applicant.
Building in a floodway
  • No development unless an approved plan shows no flood level increase during the base flood; floodplain permit rules also apply.
    Applies: Areas designated as floodways.
    § 15.96.060 · code text
    No structure shall be constructed, located or substantially improved and no land shall be graded or developed in the areas designated as floodways, except upon approval of a plan which provides that the proposed development will not result in any increase in flood levels during the occurrence of the base flood discharge.
Height of the lowest floor
  • At or above the base flood level.
    Applies: Lowest floor, including basement, of new or substantially improved homes; certain manufactured homes follow separate rules.
    § 15.96.060 · code text
    Except as otherwise provided under subdivision 5 of this subsection, all new construction and substantial improvements of residential structures shall have the lowest floor (including basement) elevated to or above the base flood level.
  • Above the highest adjacent grade by at least the FIRM depth number, or 2 feet minimum if none is given.
    Applies: New or substantially improved homes in AO zones.
    § 15.96.060 · code text
    Within any AO zone on the Flood Insurance Rate Maps, all new construction and substantial improvements of residential structures shall have the lowest floor (including basement) elevated above the highest adjacent grade at least as high as the depth number specified in feet on the Flood Insurance Rate Map (at least two feet if no depth number is specified).

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

What are the rules for building in a Wildomar flood zone?

Wildomar's code: A separate floodplain application and fee are needed for permits allowing a structure, substantial improvement, grading or an RV. (Land in mapped flood areas when the regular permit process has no flood control district recommendation.) (§ 15.96.050); At or above the base flood level. (Lowest floor, including basement, of new or substantially improved homes; certain manufactured homes follow separate rules.) (§ 15.96.060).

General information, not legal advice.

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Wildomar Municipal Code — full text