Grading & Drainage: Henderson vs Las Vegas
How do grading & drainage rules compare between Henderson, NV and Las Vegas, NV?
Henderson has fewer restrictions than Las Vegas.
Henderson, NV
Clark County
Henderson requires grading permits for earthwork that alters drainage patterns. The Community Development Department reviews grading plans to ensure proper drainage is maintained. All grading must comply with Clark County Regional Flood Control District standards and Henderson's development code.
View full Henderson rules →Las Vegas, NV
Clark County
Any site preparation that moves dirt — clearing, grubbing, cutting, filling, or grading — within the City of Las Vegas requires a grading permit through the Las Vegas Department of Public Works. A drainage study is mandatory if the site is in a FEMA Special Flood Hazard Area, near a Clark County Regional Flood Control District (CCRFCD) Master Plan facility, or impacted by off-site flows. On-site grading permits cover private property; any work in public right-of-way or drainage facilities requires a separate off-site permit and bond.
View full Las Vegas rules →Key Facts Comparison
| Fact | Henderson | Las Vegas |
|---|---|---|
| Permit Required | Yes, for significant earthwork | - |
| Review Authority | Community Development Department | - |
| Flood Standards | Clark County Regional Flood Control District | - |
| Flash Flood | Must not redirect wash drainage | - |
| Desert Tortoise | Habitat survey may be required | - |
| Permit Agency | - | Las Vegas Public Works Development Review |
| On-site Permit | - | Required for any private-property grading |
| Off-site Permit | - | Required for work in right-of-way or drainage |
| Drainage Study | - | Required if SFHA, CCRFCD facility, or off-site flows |
| Dust Permit | - | Clark County DES — ≥0.25 acre disturbance |
| Engineering Manual | - | CCRFCD Hydrologic Criteria & Drainage Design Manual |
| Contact | - | 702-229-6324 |
Highlighted rows indicate differences between cities.
Henderson FAQ
Do I need a grading permit in Henderson?
Yes. Grading permits are required for filling, excavating, or altering drainage patterns. Plans must comply with Clark County Regional Flood Control District standards.
Can I grade over a desert wash on my property?
Blocking or redirecting desert washes is a serious flood safety violation. Grading plans must account for existing drainage paths and flash flood flows.
Las Vegas FAQ
Do I need a grading permit in Las Vegas?
Yes — any site preparation that moves dirt (clearing, grubbing, cutting, filling, grading) on private property in the City of Las Vegas requires an on-site grading permit from Las Vegas Public Works. Work in the public right-of-way or drainage facilities also requires a separate off-site permit and bond.
When does Las Vegas require a drainage study?
A drainage study (sealed by a Nevada-licensed PE) is required when the site is in a FEMA Special Flood Hazard Area, is adjacent to or impacted by a CCRFCD Master Plan facility, or receives flows from an off-site wash or drainage facility.
Do I need a dust permit to grade in Las Vegas?
Yes if the project disturbs 0.25 acre or more. Apply for a Dust Mitigation Permit through Clark County Department of Environment and Sustainability (DES) before disturbing the soil.
What is 'Early Grading' in Las Vegas?
Early Grading (also called 'at-risk grading') is an option to start on-site grading before the off-site permit is fully approved. The on-site grading plan must still be approved, and the contractor accepts the risk that off-site changes could require rework.
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