Vacaville · Land use · Duplex
Where is a duplex allowed in Vacaville?
In Vacaville, a duplex is allowed in 9 base zones (RR, RE, RL, RLM, RM and 4 more, 5 with a condition) (Vacaville use tables, read October 2026).
Key points
- Allowed: RR, RE, RL, RLM, RM, RMH, RH, RHL and 1 more
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Vacaville 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
Vacaville'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 |
|---|---|---|
| RR | Allowed — see note Note 1: Refer to California Government Code Section 65852.21 for additional procedures and requirements and Chapter 14.09.280 of this code, Zoning Clearance. | § 14.09.060.020 |
| RE | Allowed — see note Note 1: Refer to California Government Code Section 65852.21 for additional procedures and requirements and Chapter 14.09.280 of this code, Zoning Clearance. | § 14.09.060.020 |
| RL | Allowed — see note Note 1: Refer to California Government Code Section 65852.21 for additional procedures and requirements and Chapter 14.09.280 of this code, Zoning Clearance. | § 14.09.060.020 |
| RLM | Allowed — see note Note 1: Refer to California Government Code Section 65852.21 for additional procedures and requirements and Chapter 14.09.280 of this code, Zoning Clearance. | § 14.09.060.020 |
| RM | Allowed | § 14.09.060.020 |
| RMH | Allowed | § 14.09.060.020 |
| RH | Allowed | § 14.09.060.020 |
| RHL | Allowed | § 14.09.060.020 |
| MHP | Allowed — see note Note 1: Refer to California Government Code Section 65852.21 for additional procedures and requirements and Chapter 14.09.280 of this code, Zoning Clearance. | § 14.09.060.020 |
What else applies
- Note 1 on the P cells in RR, RE, RL, RLM, MHP refers to Government Code Section 65852.21 (SB 9) and Chapter 14.09.280 (Zoning Clearance), so duplexes in those districts follow the SB 9 procedure. Overlay districts (AB, RSS, PD, Northeast Growth Area) and the DCSP / DRSP columns are not base districts; blank cells (RHL column rows from Community Assembly down, DCSP, DRSP) are left out. S3 header mark 1 on MX: developments in MX must contain two different types of uses, one residential.
- 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: Use classification definitions (Chapter 14.02.060) and Section 14.09.270.xxx standards, including Animal Keeping (14.09.270.070), are not in the packet; Specific plan districts DCSP and DRSP: use cells blank; Overlay districts AB, RSS, PD, NGA. Overlay zones and specific plans can also change the answer.
Other uses in Vacaville
Who this affects
Frequently asked questions
Can I have a duplex in the RR zone in Vacaville?
Yes, with a condition. Vacaville's use table lists it as allowed in RR (§ 14.09.060.020). The code adds a condition: “Refer to California Government Code Section 65852.21 for additional procedures and requirements and Chapter 14.09.280 of this code, Zoning Clearance.”
General information, not legal advice.
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