Patterson · Land use · Duplex
Where is a duplex allowed in Patterson?
In Patterson, a duplex is needs a permit in 6 (ER, DR, MR, HR, NC and 1 more, all with a condition) and not allowed in 3 (Patterson use tables, read October 2026).
Key points
- Needs a permit: ER, DR, MR, HR, NC and DC
- Not allowed: HSC, GC and MPO
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Patterson 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
Patterson'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 |
|---|---|---|
| ER | Needs an administrative review — see note Note 1: Duplexes and halfplexes may be permitted with administrative use review (AR) on corner lots larger than 7,000 square feet. | § 18.38.030 |
| DR | Needs an administrative review — see note Note 1: Duplexes and halfplexes may be permitted with administrative use review (AR) on corner lots larger than 7,000 square feet. | § 18.38.030 |
| MR | Needs an administrative review — see note Note 1: Duplexes and halfplexes may be permitted with administrative use review (AR) on corner lots larger than 7,000 square feet. | § 18.38.030 |
| HR | Needs an administrative review — see note Note 1: Duplexes and halfplexes may be permitted with administrative use review (AR) on corner lots larger than 7,000 square feet. | § 18.38.030 |
| NC | Needs a conditional use permit — see note Code row: “Duplexes (joint use)” Note 1: When combined as a joint use (i.e., shops below and units above). | § 18.42.030 |
| DC | Needs a conditional use permit — see note Code row: “Duplexes (joint use)” Note 1: When combined as a joint use (i.e., shops below and units above). | § 18.42.030 |
Zones where it is not allowed
What else applies
- Commercial cells come from the joint-use row only (units above shops). Row mark "1" is part of the row name in the table.
- 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: Zone names are given in 18.38.020, 18.42.020, 18.46.020, 18.50.020, which are not in the packet; Meaning of the "(n,w)" marks on the LR column; Specific plan or planned development zones, if any. Overlay zones and specific plans can also change the answer.
Other uses in Patterson
Who this affects
Frequently asked questions
Can I have a duplex in the ER zone in Patterson?
Only with an administrative review. Patterson's use table lists it that way in ER (§ 18.38.030). The code adds a condition: “Duplexes and halfplexes may be permitted with administrative use review (AR) on corner lots larger than 7,000 square feet.”
Can I have a duplex in the HSC zone in Patterson?
No. Patterson's use table does not allow it in HSC (§ 18.42.030).
General information, not legal advice.
Ask about a duplex at an address in Patterson
Ask GoCodebook what the zoning at a specific address allows and get an answer that cites the section.
Ask your question