ADU Permits: Moreno Valley vs Riverside
How do adu permits rules compare between Moreno Valley, CA and Riverside, CA?
Moreno Valley and Riverside have similar restriction levels.
Moreno Valley, CA
Riverside County
Moreno Valley issues Accessory Dwelling Unit (ADU) permits ministerially under MVMC §9.08.060, which implements California Government Code §65852.2. ADUs are permitted in any residential zone where a single-family or multi-family dwelling is allowed. Applications go through Community Development - Planning Division and Building & Safety, with a 60-day statutory review window once the application is complete.
View full Moreno Valley rules →Riverside, CA
Riverside County
Riverside processes ADU, MADU (movable ADU), and JADU applications ministerially under Riverside Municipal Code Chapter 19.442 and California Government Code §65852.2. The Community & Economic Development Department reviews permits with the state-mandated 60-day decision deadline. Detached ADUs may reach 1,200 sq ft and JADUs up to 500 sq ft, with a 4-foot side/rear setback for one-story units.
View full Riverside rules →Key Facts Comparison
| Fact | Moreno Valley | Riverside |
|---|---|---|
| Code Section | MVMC §9.08.060; Gov. Code 65852.2 | RMC Ch. 19.442; Gov. Code §65852.2 |
| Review Type | Ministerial (no hearing) | - |
| Statutory Deadline | 60 days | - |
| Detached ADU Max | 1,200 sq ft | - |
| JADU Max | 500 sq ft | 500 sq ft |
| Apply Via | Accela SimpliCITY portal | - |
| Review | - | Ministerial, 60-day cap |
| Detached Max | - | 1,200 sq ft |
| Setback | - | 4 ft side/rear (one-story) |
| Height | - | 16 ft standard; 25 ft attached |
Highlighted rows indicate differences between cities.
Moreno Valley FAQ
How long does an ADU permit take in Moreno Valley?
State law (Gov. Code §65852.2) requires the City to approve or deny a complete ADU application within 60 days, or it is deemed approved. MVMC §9.08.060 conforms to this timeline.
Do I need a Planning Commission hearing for a Moreno Valley ADU?
No. ADU permits are reviewed ministerially by Community Development staff - no public hearing, no Planning Commission, no discretionary design review.
How big can a detached ADU be in Moreno Valley?
Up to 1,200 square feet under MVMC §9.08.060. Attached ADUs are limited to 50% of the primary dwelling or 1,200 sq ft, whichever is less. JADUs are capped at 500 sq ft.
Riverside FAQ
How long does ADU review take in Riverside?
California Gov. Code §65852.2(b) caps ministerial review at 60 days from a complete application. Riverside CEDD Planning issues permits over-the-counter when plans meet RMC Chapter 19.442 objective standards. No public hearing or discretionary findings are required.
Is there a minimum lot size for a Riverside ADU?
No. RMC 19.442.030 expressly states there is no minimum lot size to establish an ADU, MADU, or JADU. State law preempts any lot-size minimum for ADUs on single-family or multi-family lots.
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