Tiny Homes: Chino vs Rialto
How do tiny homes rules compare between Chino, CA and Rialto, CA?
Chino and Rialto have similar restriction levels.
Chino, CA
San Bernardino County
Chino allows tiny homes only through three regulated pathways: (1) a permitted Accessory Dwelling Unit (ADU) up to 1,200 sq ft on a permanent foundation under Gov. Code §65852.2 (now §66310 et seq.) and Chino's 3-17-20 ADU ordinance; (2) a Junior ADU (JADU) up to 500 sq ft within an existing single-family dwelling under Gov. Code §65852.22 (now §66333 et seq.); or (3) a Movable Tiny House registered as a recreational vehicle / park trailer under Cal. Health & Safety Code §18010 and ANSI A119.5 — but only as a temporary RV, not a permanent residence on a single-family lot.
View full Chino rules →Rialto, CA
San Bernardino County
Tiny homes in Rialto are regulated either as ADUs under California Government Code §65852.2 (state ADU law) and Rialto Municipal Code Title 18, or as RVs/manufactured housing under state HCD rules. Permanent tiny homes on foundations qualify as ADUs and benefit from California's ministerial-approval preemption.
View full Rialto rules →Key Facts Comparison
| Fact | Chino | Rialto |
|---|---|---|
| ADU max size | 1,200 sq ft detached (Gov. Code §65852.2) | - |
| ADU setbacks | 4 ft side/rear minimum (state preemption) | - |
| JADU max size | 500 sq ft within existing SFD (Gov. Code §65852.22) | - |
| Owner occupancy | JADU yes; ADU no (for permits 1/1/2020–1/1/2025) | - |
| Tiny house on wheels | Treated as RV under HSC §18010 — not a permanent residence | - |
| Approval timeline | 60 days ministerial (state mandate) | - |
| Permanent tiny home | - | Processed as ADU per Cal. Gov. Code §65852.2 |
| On wheels (THOW) | - | RV under HCD Title 25 / Vehicle Code - not a dwelling unless ADU-certified |
| Building code | - | CRC Appendix Q for tiny houses under 400 sf |
| Local zoning | - | RMC Title 18 (must conform to state ADU law) |
Highlighted rows indicate differences between cities.
Chino FAQ
Can I park a tiny house on wheels in my Chino backyard and live in it?
No. A tiny house on wheels is classified as a recreational vehicle under Cal. Health & Safety Code §18010 / ANSI A119.5 and may not be used as a permanent residence on a single-family lot. Chino has not adopted a separate Movable Tiny House (MTH) ordinance.
Can I build a tiny home as an ADU?
Yes, if it is constructed on a permanent foundation, meets the California Residential Code, and complies with Chino's ADU ordinance (CMC Title 20, adopted 3-17-20) and Gov. Code §65852.2 — up to 1,200 sq ft, 4 ft setbacks, 16-18 ft height.
What's the difference between an ADU and a JADU in Chino?
An ADU is up to 1,200 sq ft, can be detached, attached, or converted; a JADU is max 500 sq ft, must be within an existing single-family dwelling, and requires owner occupancy (Gov. Code §65852.22).
Rialto FAQ
Can I live in a tiny home in my Rialto backyard?
Yes if it is permitted as an ADU under Cal. Gov. Code §65852.2 and built to the California Residential Code (CRC Appendix Q applies to tiny houses under 400 sf). Living in an RV or trailer as a permanent residence outside an RV park is prohibited.
Can Rialto require owner-occupancy for an ADU tiny home?
State ADU law currently bars Rialto from imposing owner-occupancy requirements on most newly permitted ADUs; check current Gov. Code §65852.2 amendments for the applicable date range.
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