Shed Rules: Chino vs Ontario
How do shed rules rules compare between Chino, CA and Ontario, CA?
Ontario has fewer restrictions than Chino.
Chino, CA
San Bernardino County
Chino regulates sheds and detached accessory buildings under Title 20 (Zoning). Small sheds 120 sq ft or less are exempt from building permits under the California Residential Code (CRC Section R105.2 / CBC Appendix M as adopted in Chino Municipal Code Title 15), but zoning setbacks, height limits, and lot-coverage rules in Title 20 still apply. Sheds may not be placed in a required front yard, and equestrian-zone parcels in the Chino Agricultural Preserve have separate barn/stable provisions.
View full Chino rules →Ontario, CA
San Bernardino County
Ontario follows CRC Section R105.2, exempting one-story detached sheds under 120 sq ft from a building permit. Sheds must still meet zoning setbacks, height limits, and trade permits for electrical.
View full Ontario rules →Key Facts Comparison
| Fact | Chino | Ontario |
|---|---|---|
| Permit exemption | Sheds 120 sq ft or less, no plumbing/electric (CRC R105.2) | - |
| Zoning setbacks | Title 20 — typically 5 ft side/rear in R-1 for under-14 ft accessory structures | - |
| Habitable use | Prohibited — must be permitted ADU/JADU to be lived in | - |
| Equestrian zones | Barns/stables separately regulated in A-R / Chino Ag Preserve zones | - |
| Code portal | Municode CMC Title 20 (Supp. 37, through Ord. 2025-002) | - |
| Permit trigger | - | Over 120 square feet |
| State code | - | CRC R105.2 exemption |
| Setbacks | - | Typically 3-5 ft rear/side |
| Electrical/plumbing | - | Trade permit required |
| Coverage | - | Rear-yard cap, often 30 percent |
Highlighted rows indicate differences between cities.
Chino FAQ
Do I need a permit for a small backyard shed in Chino?
Not from Building if the shed is 120 sq ft or less with no electrical or plumbing (CRC R105.2 as adopted in CMC Title 15). You still must follow Title 20 zoning setbacks and may not place it in a required front yard.
Can I add electricity to my shed without a permit?
No. Adding electrical or plumbing service triggers a building/electrical permit under Chino Municipal Code Title 15 regardless of shed size.
Can I live in a shed or convert it into a guest room?
No. Sheds are non-habitable accessory structures. Habitable backyard living space must meet ADU/JADU standards under Gov Code 65852.2 (re-codified by SB 477 at Gov Code 66310 et seq.) and Chino's ADU ordinance.
Ontario FAQ
Can I put a 10 by 12 shed in my Ontario backyard without a permit?
A 10 by 12 shed is exactly 120 square feet, which is at the exemption line. Going one foot larger triggers a permit. Keep it at or under 120 square feet and follow setbacks to avoid the permit.
Does a shed with a light fixture need a permit?
Yes. Even a permit-exempt shed requires a separate electrical permit for any wiring beyond a standard cord drop.
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