North Las Vegas, NV Accessory Structures: ADU Rules (2026)

2, Accessory Dwelling Units, sets differing standards by zoning district, and the section governing ordinary single-family neighborhoods, O-L, R-E, R-EL, and R-1, is subsection c. There, an ADU is permitted only if it clears a special use review and meets six listed conditions: the lot must have a minimum area of 6,000 square feet with a single-family dwelling as the principal use; the ADU must include its own kitchen and restroom facilities; mobile homes, recreational vehicles, and travel trailers cannot be used as ADUs; the unit's gross floor area must be at least 200 square feet but no more than 50 percent of the principal dwelling's floor area or 800 square feet, whichever is less, with tiny houses capped at 400 square feet; no ADU may sit within 300 feet of another ADU, a density-limiting spacing rule unique to this district group; and only one ADU is allowed per lot.

A separate track exists for nonresidential districts, where subsection a allows one ADU for security or related personnel with a floor area of 200 to 800 square feet, and for PUD/PID, MUD, and PCD districts, where subsection b applies its own individual-review procedure. Across every district, home occupations are barred inside an ADU, the units cannot be sold apart from the principal dwelling, and exterior materials must match the surrounding development's quality, when the principal structure is brick or stone, smooth wood or fiber-cement siding is treated as appropriate to keep the ADU visually subordinate.

At least one off-street parking space is required for the ADU beyond what the principal use already needs, though no more than two spaces may be provided for it, and ADUs do not count toward the lot's maximum residential density.