ADU Rules in Summerlin South, Nevada

CRITICAL: Summerlin South is Unincorporated Clark County

There is no City of Summerlin or City of Summerlin South. Summerlin South is an unincorporated community within Clark County. All ADU permits are issued by Clark County Building Department — not by a city government.

Do not contact the City of Las Vegas for Summerlin South properties — use Clark County processes.

About Summerlin

Summerlin is one of the largest and most successful master-planned communities in the United States, developed by the Howard Hughes Corporation along the western edge of the Las Vegas Valley. Despite its size and prominence, Summerlin has no municipal government. Clark County provides all governmental services including planning and building permits.

Summerlin South is the southern portion of the Summerlin community, featuring numerous sub-planned communities, village centers, and extensive HOA infrastructure. The Spring Mountains (Red Rock Canyon area) form a dramatic backdrop to the west.

Nevada has no enacted statewide ADU preemption. AB 383 is an appliance-energy-efficiency bill, not ADU. ADU rules are set locally — contact the city or county planning department.

Nevada has no enacted statewide ADU preemption. AB 383 is an appliance-energy-efficiency bill, not ADU. ADU rules are set locally — contact the city or county planning department.

Permitted ADU Types (Under Clark County Code)

• Detached ADU — freestanding structure on the same lot
• Attached ADU — addition to the primary home
• Junior ADU (JADU) — interior conversion within the primary dwelling, up to 500 sq ft
• Garage conversion — converting an existing garage to habitable space

General Development Standards (Clark County)

• Maximum size: Up to 1,200 sq ft or 50% of the primary dwelling's floor area, whichever is less
• Setbacks: Typically 5 ft rear and side setbacks for detached ADUs; verify for your specific zone
• Height: Generally capped at 16 ft for detached ADUs in residential zones
• Parking: One additional off-street space may be required

HOA Considerations — Summerlin Community Association

Summerlin has an exceptionally robust HOA structure with a master Summerlin Community Association and numerous sub-associations, each with their own CC&Rs and architectural standards. Important points:

• HOA restrictions are separate from and in addition to Clark County zoning requirements
• Many Summerlin HOAs require Architectural Review Committee (ARC) approval for any exterior addition or new structure
• Some sub-associations may restrict or prohibit detached ADUs outright
• ADU rentals may be restricted by HOA rules even if Clark County permits them
• Clark County will not enforce HOA rules — these are private contractual matters

Always obtain written HOA approval before submitting plans to Clark County.

Water Conservation — SNWA Requirements

Summerlin South is served by the Southern Nevada Water Authority (SNWA). Traditional turf grass is restricted or prohibited for new landscaping installations. Plan for xeriscape and drought-tolerant plantings for any ADU landscaping. SNWA's conservation requirements are strictly enforced in this region.

Permit Process (Clark County)

Nevada has no enacted statewide ADU preemption. AB 383 is an appliance-energy-efficiency bill, not ADU. ADU rules are set locally — contact the city or county planning department.

Contact Information

• Clark County Building Department: (702) 455-3000 | clarkcountynv.gov/building
• Clark County Current Planning: (702) 455-4314
• Summerlin Community Association: Contact via summerlin.com or your specific sub-association

Nevada has no enacted statewide ADU preemption. AB 383 is an appliance-energy-efficiency bill, not ADU. ADU rules are set locally — contact the city or county planning department.