ADU Rules: Jurupa Valley vs Moreno Valley
How do adu rules rules compare between Jurupa Valley, CA and Moreno Valley, CA?
Jurupa Valley has fewer restrictions than Moreno Valley.
Jurupa Valley, CA
Riverside County
Jurupa Valley Municipal Code Section 9.240.290 (adopted via Ordinance No. 2025-22, effective November 2025) implements California Government Code Sections 66313 et seq. Detached new-construction ADUs are capped at 850 sq ft (or 1,000 sq ft if more than one bedroom), 16 ft height (18-20 ft near transit), with 4-foot side and rear setbacks. JADUs are limited to 500 sq ft within an existing single-family dwelling.
View full Jurupa Valley rules →Moreno Valley, CA
Riverside County
Moreno Valley allows ADUs on residential lots per California state law. Junior ADUs (JADUs) up to 500 sq ft within existing structures are permitted. ADUs up to 800 sq ft are allowed by right. Building permits required.
View full Moreno Valley rules →Key Facts Comparison
| Fact | Jurupa Valley | Moreno Valley |
|---|---|---|
| Code section | Jurupa Valley Municipal Code Sec. 9.240.290 (Ord. 2025-22) | - |
| Max detached ADU size | 850 sq ft (1,000 sq ft if more than 1 bedroom) | - |
| Max detached ADU height | 16 ft (18 ft or 20 ft near transit/multifamily) | - |
| Side/rear setback | 4 ft minimum | - |
| JADU size | 220-500 sq ft within existing single-family dwelling | - |
| State authority | Cal. Gov. Code Sections 66313, 66314, 66317, 66323, 66333 | - |
| By Right | - | Up to 800 sq ft |
| JADU | - | Up to 500 sq ft (within existing) |
| Setbacks | - | 4 ft rear/side |
| Parking | - | None near transit |
Highlighted rows indicate differences between cities.
Jurupa Valley FAQ
Can Jurupa Valley deny an ADU permit?
No. Per Sec. 9.240.290(D)(4), the Community Development Director must ministerially approve any application that meets the standards, with no discretionary review or public hearing. State Gov. Code Sec. 66317 caps review at 60 days.
How big can my ADU be?
A detached ADU can be up to 850 sq ft, or 1,000 sq ft if it has more than one bedroom (Sec. 9.240.290(E)(3)(a)). An attached ADU is capped at 50 percent of the primary dwelling's gross floor area.
Do I need to live on the property to build an ADU?
No owner-occupancy is required for an ADU-only project. However, Sec. 9.240.290(G)(3) requires owner-occupancy of either the JADU or primary dwelling when a JADU exists.
Moreno Valley FAQ
Can I build an ADU in Moreno Valley?
Yes. ADUs up to 800 sq ft are permitted by right. JADUs up to 500 sq ft within existing structures are also allowed.
What is a Junior ADU?
A unit up to 500 sq ft completely within an existing structure. May share or have separate bathroom facilities.
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