Henderson, NV Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Applies to
- new construction, substantial improvements on flood-hazard sites
- Structure must be
- anchored against flotation, collapse, movement
- Materials required
- flood-resistant construction materials and utility equipment
- Reviewed by
- Department of Public Works, building permit stage
- Chapter-wide penalty
- up to $1,000/day, 6 months jail
Summary
Henderson requires new construction and substantial improvements on flood-hazard sites to be anchored against flotation and built with flood-resistant materials. Public Works checks building permits for flood safety before issuing them.
If a proposed building site is in a location that has a flood hazard, any proposed new construction or substantial improvement (including prefabricated and mobile homes) must (i) be designed (or modified) and anchored to prevent flotation, collapse, or lateral movement of the structure; (ii) use construction materials and utility equipment that are resistant to flood damage; and (iii) use construction methods and practices that will minimize flood damage.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 59 Update 3).
Full Breakdown
Before issuing a permit for new construction or a substantial improvement on a flood-hazard site, Henderson's Department of Public Works must find the site reasonably safe from flooding. Qualifying projects, including prefabricated and mobile homes, must be anchored to resist flotation, collapse, or lateral movement, built with flood-resistant materials and utility equipment, and constructed using methods that minimize flood damage. Subdivision proposals face the same review: utilities and facilities must be located, elevated, and constructed to minimize flood damage, with drainage designed to reduce exposure. Henderson also adopts FEMA's flood plain maps for Clark County by reference to mark the hazard areas this applies to.
Violations & Fines
Noncompliant plans don't get a building permit. Because this sits inside Henderson's stormwater chapter, a violation can also be treated as a public nuisance subject to abatement, and can draw criminal prosecution with a fine of up to $1,000 per violation per day and up to six months in jail.
Frequently Asked Questions
Does Henderson require a minimum freeboard height above base flood elevation?
Where do Henderson's flood hazard boundaries come from?
Does this rule apply in unincorporated Clark County too?
Sources & Official References
Other rules in Henderson
Compare Henderson to another location·View the Nevada environmental rules overview
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Flood Elevation Requirements in Nearby Cities
How other cities in Clark County handle flood elevation requirements.