Huntington Park, CA Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Required elevation
- Base flood elevation plus one foot, or Building Standards Code if more protective
- Systems elevation
- Mechanical, plumbing and electrical at base flood elevation plus one foot
- Non-conversion agreement trigger
- Finish floor more than four feet above lowest adjacent grade
- Detached garage size limit
- One story, not larger than 600 square feet
- Manufactured homes
- Lowest floor at or above base flood elevation plus one foot
- Penalty
- Misdemeanor
Summary
New buildings and substantial improvements in a flood hazard area in the City of Huntington Park must meet the California Building Standards Code or the base flood elevation plus one foot, whichever gives greater flood protection. Mechanical, plumbing and electrical systems follow the same one foot of freeboard, and manufactured homes must sit at or above it.
Applications for new buildings and structures and substantial improvements within the scope of the Building Standards Code that are proposed in flood hazard areas shall comply with the applicable requirements of the Building Standards Code, or the base flood elevation plus one foot, whichever provides greater flood protection. Buildings and structures which are part of a new subdivision shall be constructed to the grades and finish floor elevations shown in the approved tentative map, or the applicable requirements of the Building Standards Code, or the base flood elevation plus one foot, whichever provides greater flood protection. Mechanical, plumbing and electrical systems, including plumbing fixtures related to or supporting a building and structure in a flood hazard area, shall be elevated to the applicable requirements of the Building Standards Code or the base flood elevation plus one foot, whichever provides greater flood protection.
Full Breakdown
Section 8-19.301-1 sets the local elevation standard, adopted by Ordinance 2024-04, effective December 4, 2024. Applications for new buildings and structures and substantial improvements in flood hazard areas follow the Building Standards Code or the base flood elevation plus one foot, whichever protects more. Buildings in a new subdivision are built to the grades and finish floor elevations on the approved tentative map, or to the same two measures, whichever protects more. Mechanical, plumbing and electrical systems, including plumbing fixtures, are elevated to the same standard.
In Zone AO, the design flood elevation is the highest existing grade of the building's perimeter plus the depth number on the flood hazard map plus one foot. Where the map gives no depth number, the depth is two feet plus one foot, for a total of three feet.
Section 8-19.301-2 requires a non-conversion agreement when a new or substantially improved structure has a finish floor elevation more than four feet above the lowest adjacent grade. The enclosed area below the lowest floor is used only for vehicle parking, limited storage or building access and never for human habitation. Interior walls, ceilings and floors below the base flood elevation plus one foot stay unfinished and flood-resistant, mechanical, electrical and plumbing devices stay above that line, and wall openings stay unblocked.
Detached garages and accessory storage structures can sit below the base flood elevation if they are one story, not larger than 600 square feet in special flood hazard areas, anchored, fitted with flood openings, and built with flood damage-resistant materials below the base flood elevation plus one foot (Section 8-19.301-3).
Manufactured homes placed, replaced or substantially improved must have the lowest floor at or above the base flood elevation plus one foot (Sections 8-19.304-4 and 8-19.304-5). The installer submits an elevation certification from a licensed land surveyor or registered civil engineer before final inspection.
Violations & Fines
Section 8-19.108-1 presumes a violation for any building or structure lacking documentation of the lowest floor elevation, other required design certifications or other evidence of compliance, until the documents are submitted. Violating the requirements is a misdemeanor. Building differently from the type, scope or manner authorized under the building permit or the non-conversion agreement is a violation of that agreement under Section 8-19.301-2(a)(5).
Frequently Asked Questions
How high must a new building be elevated in Huntington Park's flood zone?
Do mechanical and electrical systems have to be elevated too?
What is a non-conversion agreement?
How are manufactured homes handled?
Sources & Official References
Other rules in Huntington Park
California rules heatmap·Compare Huntington Park to another location·View the California environmental rules overview
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How other cities in Los Angeles County handle flood elevation requirements.