Elk Grove · Land use · Duplex
Where is a duplex allowed in Elk Grove?
In Elk Grove, a duplex is allowed in 4 base zones (RD-1/2/3, RD-4/5/6, RD-7 and RD-8/10/12/15/18), needs a conditional use permit in 1 (RD-20/25/30/40, it with a condition) and not allowed in 20 (Elk Grove use tables, read October 2026).
Key points
- Allowed: RD-1/2/3, RD-4/5/6, RD-7 and RD-8/10/12/15/18
- Needs a permit: RD-20/25/30/40
- Not allowed: AG-80, AG-20, AR-5/10, AR-2, AR-1, LC, GC, SC and 12 more
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Elk Grove 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
Elk Grove's code calls this use “Dwelling, Two (2) Residential Unit”. 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 |
|---|---|---|
| RD-1/2/3 Very Low Density Residential | Allowed | Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS |
| RD-4/5/6 Low Density Residential | Allowed | Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS |
| RD-7 Low Density Residential | Allowed | Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS |
| RD-8/10/12/15/18 Medium and Medium-High Density Residential | Allowed | Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS |
| RD-20/25/30/40 High Density Residential | Needs a conditional use permit — see note Note 1: In the RD-20 zone only. | Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS |
Zones where it is not allowed
What else applies
- Defined as two primary dwellings on one lot or adjoining lots (duplex or halfplex), attached or detached. Accessory dwelling units are separate (Ch. 23.90).
- 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: Specific Plan (SP) and Special Planning Area (SPA) districts: uses set by each plan; RM-1 mobile home subdivision district (own table, § 23.40.030); Overlay and combining districts (MF, F, MHP, RUC, SM, BCS, EF, EEG, CR-99). Overlay zones and specific plans can also change the answer.
Other uses in Elk Grove
Who this affects
Frequently asked questions
Can I have a duplex in the RD-20/25/30/40 zone in Elk Grove?
Only with a conditional use permit. Elk Grove's use table lists it that way in RD-20/25/30/40 (High Density Residential) (Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS). The code adds a condition: “In the RD-20 zone only.”
Can I have a duplex in the AG-80 zone in Elk Grove?
No. Elk Grove's use table does not allow it in AG-80 (Agricultural (80-acre minimum)) (Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS).
Can I have a duplex in the RD-1/2/3 zone in Elk Grove?
Yes. Elk Grove's use table lists it as allowed in RD-1/2/3 (Very Low Density Residential) (Division III — ZONING DISTRICTS, ALLOWABLE USES, AND DEVELOPMENT STANDARDS).
General information, not legal advice.
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