Fresno, CA Accessory Structures: Tiny Homes (2026)

Section 15-2754(C)(1) defines an ADU as separate, independent living quarters with its own entrance and, at minimum, a kitchen, bathroom, and bedroom, and it can be attached, detached, or located within a primary dwelling's structure. " That means a THOW is not exempt from any of the section's other standards, it still has to fit within the ADU count limits (up to two ADUs per single-unit lot), the 50 percent/1,400-square-foot size cap, the 30-foot height allowance, and the setback rules that apply to any other ADU.

On top of those general standards, the code layers three requirements specific to wheeled units: the THOW must be ANSI certified (the American National Standards Institute standard used for factory-built and park-model housing), it must be placed on an engineered foundation system rather than simply parked, and it must use skirting to enclose the space between the home's underside and the ground. Together these conditions convert what would otherwise be a mobile trailer into a fixed accessory structure recognized under the Development Code, subject to the same ministerial ADU permitting process the rest of Section 15-2754 establishes, including the 30-consecutive-day minimum rental term that applies to all Second Dwelling Units.