Rancho Cucamonga, CA Accessory Structures: ADU Rental Restrictions (2026)

100 covers sales, rental, and occupancy for ADUs and JADUs, and subsection (B), titled 'Rental Terms,' requires any rental of an ADU or JADU to be for a period exceeding 30 consecutive days. 070. A lease or rental agreement for less than 31 days does not comply, regardless of whether the tenant is billed nightly, weekly, or by some other short-term arrangement. The rule sits alongside the JADU owner-occupancy requirement in subsection (C), which keeps the property owner living in either the main house or the JADU, reinforcing that these units are intended to add long-term housing stock rather than function as income property for transient guests.

The rental-term rule applies regardless of the sale restrictions in subsection (A), which separately bars selling or conveying an ADU apart from the main dwelling except in narrow circumstances involving qualified nonprofit corporations and long-term affordability covenants recorded with the county. 040, from a Category 1 conversion of existing space to a Category 4 multi-unit development on a multi-family lot.