ADU Rules in Henderson, Nevada

Henderson: A Separate City, Not a Las Vegas Suburb (for Zoning Purposes)

Henderson is the second-largest city in Nevada and is entirely separate from the City of Las Vegas. It has its own city government, planning department, and zoning code. All ADU permits in Henderson are issued by Henderson Community Development & Services — not Clark County and not the City of Las Vegas.

Henderson is home to several major master-planned communities including Green Valley, MacDonald Ranch, and Anthem. Many of these neighborhoods have active HOAs with architectural guidelines. Always check HOA restrictions in addition to city requirements.

State Context

Nevada does not currently have a statewide ADU mandate of the kind enacted in California, Oregon, Montana, or Massachusetts. ADU rules in Henderson are set primarily through the Henderson Development Code; verify the current code with Henderson Community Development & Services before designing your project.

Permitted ADU Types in Henderson

• Detached ADU — freestanding structure separate from the main home
• Attached ADU — addition connected to the primary dwelling
• Junior ADU (JADU) — internal conversion within the primary home, up to 500 sq ft
• Garage conversion — converting an existing garage into living space

General Development Standards

• Maximum ADU size: Generally up to 1,200 sq ft or 50% of the primary dwelling's floor area, whichever is less
• Setbacks: Typically 5 ft side and rear setbacks for detached ADUs; varies by zone
• Height: Usually capped at 16 ft for detached ADUs in standard residential zones
• Parking: One additional off-street parking space may be required depending on zone and proximity to transit

Water Conservation — SNWA Requirements

Henderson is served by the Southern Nevada Water Authority (SNWA). Water-efficient landscaping is mandatory; traditional turf lawns cannot be installed for new ADU projects. SNWA's "Cash for Grass" turf removal programs reflect the broader conservation culture of the region. ADU construction must comply with Henderson's water-wise landscape ordinance.

Permit Process

1. Confirm parcel is within Henderson city limits — use the Clark County Assessor's parcel search to verify
2. Submit application to Henderson Community Development & Services
3. Provide plans — site plan, floor plans, elevations, structural details
4. Plan review — verify whether your project is processed administratively or requires hearings under the Henderson Development Code
5. Building inspections and final Certificate of Occupancy

Contact Information

• Henderson Community Development & Services: (702) 267-1500 | hendersonlive.com
• Henderson Building & Safety: (702) 267-3912

Disclaimer: ADU regulations change frequently. Always verify current requirements directly with the City of Henderson Community Development & Services before beginning any project.