Tiny Homes: Chino vs Rancho Cucamonga
How do tiny homes rules compare between Chino, CA and Rancho Cucamonga, CA?
Chino and Rancho Cucamonga 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 →Rancho Cucamonga, CA
San Bernardino County
Tiny homes on foundations can qualify as ADUs or Junior ADUs in Rancho Cucamonga under state law. Tiny homes on wheels are regulated as RVs and cannot be used as permanent dwellings.
View full Rancho Cucamonga rules →Key Facts Comparison
| Fact | Chino | Rancho Cucamonga |
|---|---|---|
| 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) | - |
| Foundation tiny home | - | Can qualify as ADU up to 1,200 sq ft |
| JADU option | - | Up to 500 sq ft carved from primary |
| Tiny home on wheels | - | Classified as RV, not permanent dwelling |
| Minimum standards | - | CRC compliance, 7 ft ceiling, plumbing, heat |
| VHFHSZ rules | - | Chapter 7A construction required in fire zones |
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).
Rancho Cucamonga FAQ
Can I live in a tiny home on wheels in my Rancho Cucamonga backyard?
No. THOWs are RVs and cannot be used as a permanent dwelling on residential lots. A foundation-built tiny home can qualify as an ADU.
What is the smallest legal tiny home in Rancho Cucamonga?
The California Residential Code effectively sets minimum size at around 150 sq ft of habitable area with a compliant bathroom and kitchen.
Can I place a tiny home in Etiwanda foothills?
Yes as a permitted ADU, but it must meet Chapter 7A fire-resistant construction, 100-foot defensible space, and water supply standards.
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