ADU Rules: Corona vs Riverside
How do adu rules rules compare between Corona, CA and Riverside, CA?
Riverside has fewer restrictions than Corona.
Corona, CA
Riverside County
Corona permits ADUs in residential zones per CMC Chapter 17.85 and California state law. Detached ADUs up to 1,200 sq ft, JADUs up to 500 sq ft. Height 16 ft detached, 25 ft attached. Setbacks reduced to 4 feet. No short-term rental of ADUs.
View full Corona rules →Riverside, CA
Riverside County
Riverside regulates ADUs and JADUs under Chapter 19.442 of the Riverside Municipal Code (Title 19 Zoning). Detached ADUs are capped at 1,200 sq ft, attached ADUs at 50% of the primary dwelling or 1,200 sq ft (whichever is less, with minimums of 850 sq ft for one bedroom and 1,000 sq ft for more), and JADUs at 500 sq ft.
View full Riverside rules →Key Facts Comparison
| Fact | Corona | Riverside |
|---|---|---|
| Code Section | CMC Ch. 17.85 (Ord. 3410) | RMC 19.442 (Title 19 Zoning) |
| Detached Max | 1,200 sq ft / 16 ft tall | - |
| JADU | 500 sq ft, owner-occupy | - |
| Setbacks | 4 ft side/rear | - |
| Max Detached | - | 1,200 sq ft |
| Max JADU | - | 500 sq ft |
| Parking | - | Not required |
| Min Rental Term | - | 30 days |
Highlighted rows indicate differences between cities.
Corona FAQ
Can I build an ADU on my property in Corona?
Corona permits ADUs in residential zones per CMC Chapter 17.85 and California state law. Detached ADUs up to 1,200 sq ft, JADUs up to 500 sq ft. Height 16 ft detached, 25 ft attached. Setbacks reduced to 4 feet. No short-term rental of ADUs.
What are the size limits for an accessory dwelling unit in Corona?
Code Section: CMC Ch. 17.85 (Ord. 3410). Detached Max: 1,200 sq ft / 16 ft tall. JADU: 500 sq ft, owner-occupy. Setbacks: 4 ft side/rear.
Riverside FAQ
How big can my Riverside ADU be?
Detached ADUs are capped at 1,200 sq ft under RMC §19.442.030. Attached ADUs are limited to 50% of the primary dwelling or 1,200 sq ft, with 850 sq ft minimum for one bedroom and 1,000 sq ft for more.
Do I need a parking space for my Riverside ADU?
No. RMC §19.442.030 expressly states that ADUs do not require any additional off-street parking, consistent with California Government Code §65852.2.
Can I list my Riverside ADU on Airbnb?
No. RMC §19.442.030 requires that ADU rentals be for terms longer than 30 days, which prohibits short-term vacation rental use.
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