LAS VEGAS — Backyard casitas and Accessory Dwelling Units (ADUs) are becoming more popular in the Las Vegas Valley, and 2026 regulations offer guidance for construction.
ADUs and casitas are legal in many parts of Nevada, but are more restricted in North Las Vegas. Clark County defines casitas and ADUs as separate structures used for residential purposes but without a kitchen. Buildings like garages, pool houses, sheds, game rooms, and cabanas fall within the description. For residents, these buildings can become a valuable asset by accommodating family members or generating rental income in the growing suburbs, but approval must be obtained first.
Homeowners need to be aware of the Unified Development Code, which sets out zoning guidelines for ADUs. For example, attached ADUs may encompass up to 50% of the primary dwelling’s floor area but not exceed 1,200 square feet. Detached ADUs are also capped at 1,200 square feet. ADUs must also comply with the 2021 International Building Code (IBC) and International Fire Code (IFC). Permits can be applied for through the Clark County Building Department.
