Rosemead · Land use · Duplex
Where is a duplex allowed in Rosemead?
In Rosemead, a duplex is allowed in 2 base zones (R-2 and R-3) and not allowed in 1 (Rosemead use tables, read October 2026).
Key points
- Allowed: R-2 and R-3
- Not allowed: R-1
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Rosemead 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
Rosemead's code calls this use “Two-family Dwellings (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 | Allowed | § 17.12.020 |
| R-3 | Allowed | § 17.12.020 |
Zones where it is not allowed
R-1.
What else applies
- Standards for this use: § 17.12.030 district-specific requirements (not in the supplied text).
- 'Urban Dwelling' (R-1 P, § 17.30.215) lets an R-1 lot hold two units under SB 9; it only restates state law and is not counted as a duplex row.
- 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: C-4 (commercial table says see § 17.16.030.B.3 and C); P-D (Planned Development) zone; Garvey Avenue Specific Plan districts (specific plan, treated as not base). Overlay zones and specific plans can also change the answer.
Other uses in Rosemead
Who this affects
Frequently asked questions
Can I have a duplex in the R-1 zone in Rosemead?
No. Rosemead's use table does not allow it in R-1 (§ 17.12.020).
Can I have a duplex in the R-2 zone in Rosemead?
Yes. Rosemead's use table lists it as allowed in R-2 (§ 17.12.020).
General information, not legal advice.
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