Rohnert Park · Land use · Duplex
Where is a duplex allowed in Rohnert Park?
In Rohnert Park, a duplex is allowed in 5 base zones (R-R, R-E, R-L, R-M and R-H, 3 with a condition) (Rohnert Park use tables, read October 2026).
Key points
- Allowed: R-R, R-E, R-L, R-M and R-H
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Rohnert Park 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
Rohnert Park's code calls this use “Duplexes”. 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-R Rural Residential | Allowed — see note Note *: Permitted under process outlined in state law (Government Code 65852.21), also referred to as SB 9. | Chapter 17.06 — LAND USE REGULATIONS |
| R-E Estate Residential | Allowed — see note Note *: Permitted under process outlined in state law (Government Code 65852.21), also referred to as SB 9. | Chapter 17.06 — LAND USE REGULATIONS |
| R-L Residential-Low Density | Allowed — see note Note *: Permitted under process outlined in state law (Government Code 65852.21), also referred to as SB 9. | Chapter 17.06 — LAND USE REGULATIONS |
| R-M Residential-Medium Density | Allowed | Chapter 17.06 — LAND USE REGULATIONS |
| R-H Residential-High Density | Allowed | Chapter 17.06 — LAND USE REGULATIONS |
What else applies
- R-R, R-E, R-L: "P*" = SB 9 process only (state-law restatement). R-M, R-H: P.
- 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.
- Not covered here: P-D Planned Development districts: uses set per approved plan (17.06.220); Commercial overlay "C" (17.06.640) and mobile home overlays: not base; DDAZ downtown zones D-N/D-MS/D-C and Sonoma Mountain Village T-zones have their own use tables (not base); 17.08 use regulations (live/work, SRO, shelters) are not in the packet. Overlay zones and specific plans can also change the answer.
Other uses in Rohnert Park
Who this affects
Frequently asked questions
Can I have a duplex in the R-R zone in Rohnert Park?
Yes, with a condition. Rohnert Park's use table lists it as allowed in R-R (Rural Residential) (Chapter 17.06 — LAND USE REGULATIONS). The code adds a condition: “Permitted under process outlined in state law (Government Code 65852.21), also referred to as SB 9.”
General information, not legal advice.
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