ADU Rules: Menifee vs Moreno Valley
How do adu rules rules compare between Menifee, CA and Moreno Valley, CA?
Menifee and Moreno Valley have similar restriction levels.
Menifee, CA
Riverside County
Menifee Development Code Chapter 9.295 (Special Housing Types), §9.295.020, regulates accessory dwelling units (ADUs) and junior ADUs (JADUs) consistent with Cal. Gov. Code §65852.2. ADUs are allowed in all single-family and multifamily residential zones. Maximum attached/detached ADU floor area is 1,500 sq ft; JADUs are capped at 500 sq ft and must be carved from the existing single-family residence. Side and rear setbacks are reduced to 4 ft, and detached ADUs are capped at 18 ft tall (20 ft within ½ mile of a major transit stop). One off-street parking space is required unless waived (transit-proximity, historic district, conversion, etc.).
View full Menifee 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 | Menifee | Moreno Valley |
|---|---|---|
| Code section | Menifee Dev. Code §9.295.020 (Chapter 9.295 Special Housing Types) | - |
| Max ADU size | 1,500 sq ft (attached or detached) | - |
| Max JADU size | 500 sq ft (interior to primary dwelling) | - |
| Side/rear setback floor | 4 ft for new ADUs | - |
| Max detached height | 18 ft (20 ft within ½ mile of a major transit stop) | - |
| State framework | Cal. Gov. Code §65852.2 | - |
| 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.
Menifee FAQ
How big can my ADU be in Menifee?
Up to 1,500 sq ft for attached or detached ADUs under §9.295.020.E.2.f. JADUs are capped at 500 sq ft and must sit inside the existing single-family residence (§9.295.020.E.4.g).
How close to the property line can I build?
§9.295.020.E.2.g.i.2 sets a 4-ft minimum side and rear setback for new ADUs. The City must allow an 800 sq ft ADU with 4-ft yards even if the underlying zone is more restrictive.
Can I have both an ADU and a JADU?
Yes — §9.295.020.E.3 allows one ADU plus one JADU per single-family lot, mirroring Gov. Code §65852.2(e).
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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