Newport Beach · Land use · Duplex
Where is a duplex allowed in Newport Beach?
In Newport Beach, a duplex is allowed in 5 base zones (R-BI, R-2, RM, RMD and MU-CV/15th St., 3 with a condition) and not allowed in 4 (Newport Beach use tables, read October 2026).
Key points
- Allowed: R-BI, R-2, RM, RMD and MU-CV/15th St.
- Not allowed: R-A, R-1, MU-MM and MU-DW
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the Newport Beach 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
Newport Beach's code calls this use “Two-Unit Dwellings”. 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-BI | Allowed — see note Note 1: Condominium projects and condominium conversions are not permitted in the R-BI Zoning District. | § 20.18.020 |
| R-2 | Allowed — see note Note 1: Condominium projects and condominium conversions are not permitted in the R-BI Zoning District. | § 20.18.020 |
| RM | Allowed | § 20.18.020 |
| RMD | Allowed | § 20.18.020 |
| MU-CV/15th St. | Allowed — see note Note 3: Not allowed on lots at street intersections unless part of a mixed-use or live-work structure. Note 7 (zone heading): Mixed-use or commercial structures are required on lots at street intersections and are allowed, but not required, on other lots. | § 20.22.020 |
Zones where it is not allowed
What else applies
- Standards for this use: Section 20.48.180 (Specific Use Regulations column).
- SB 9 Housing Developments row is separate (not used). Mixed-use: MU-V and MU-W1/MU-W2 allow two-unit dwellings only above the 1st floor (left out); MU-MM and MU-DW '—' both floors; MU-CV P(3) both floors.
- 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: PC (Planned Community) districts: S9 sends every use to each PC development plan, so no use table; Santa Ana Heights Specific Plan SP-7 districts (REQ, RK, RSF, RMF, HN, GC, BP, PA, PACC, OS/R): S10 lists the districts only; the use table is not in the packet; Title 21 coastal residential, commercial, industrial and special-purpose tables (only mixed-use Table 21.22-1/21.22-2 is in the packet); Specific Use Regulations sections (20.48.xxx) are not in the packet. Overlay zones and specific plans can also change the answer.
Other uses in Newport Beach
Who this affects
Frequently asked questions
Can I have a duplex in the R-A zone in Newport Beach?
No. Newport Beach's use table does not allow it in R-A (§ 20.18.020).
Can I have a duplex in the R-BI zone in Newport Beach?
Yes, with a condition. Newport Beach's use table lists it as allowed in R-BI (§ 20.18.020). The code adds a condition: “Condominium projects and condominium conversions are not permitted in the R-BI Zoning District.”
General information, not legal advice.
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