Oroville · Land use · Duplex
Where is a duplex allowed in Oroville?
In Oroville, a duplex is allowed in 4 base zones (R-2, R-3, R-4 and RP) and not allowed in 8 (Oroville use tables, read October 2026).
Key points
- Allowed: R-2, R-3, R-4 and RP
- Not allowed: UR-10, UR-5, RA, RR-1, RR-20, RR-10, RL and R-1
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Oroville Municipal Code use tables (read October 2026). Base zones only. General information, not legal advice — check with the city before you apply.
Zones where a duplex can go
Oroville's code calls this use “Duplex”. Each row links to the use table it comes from. A zone marked “see note” has a condition in the code, for example upper floors only or a larger lot.
| Zone | Status | Code |
|---|---|---|
| R-2 Medium-density residential | Allowed | § 17.28.010 |
| R-3 | Allowed | § 17.28.010 |
| R-4 Urban-density residential | Allowed | § 17.28.010 |
| RP | Allowed | § 17.28.010 |
Zones where it is not allowed
What else applies
- State law: SB 9 (Gov. Code § 65852.21) allows two homes on most single-family lots with a ministerial permit, also where this table says no.
- Overlay zones and specific plans can change the answer for a lot.
Other uses in Oroville
Who this affects
Frequently asked questions
Can I have a duplex in the UR-10 zone in Oroville?
No. Oroville's use table does not allow it in UR-10 (§ 17.28.010).
Can I have a duplex in the R-2 zone in Oroville?
Yes. Oroville's use table lists it as allowed in R-2 (Medium-density residential) (§ 17.28.010).
General information, not legal advice.
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