Napa · Zoning · RO
Napa RO zoning: height, setbacks and lot size
In Napa's RO zone, buildings can be up to 35 ft (3 stories) tall and the front setback is 20 ft (Napa code, read October 2026).
Key points
- Maximum building height: 35 ft
- Maximum number of stories: 3 stories
- Minimum front setback: 20 ft
- Minimum side setback: 15 ft (the table's side setback row; its side yard rows differ by stories (see list))
- Minimum rear setback: 15 ft (1 to 2.5 stories; 20 ft for 3 stories)
RO (Residential Office District) is a zoning district in Napa. Every value below was read from the Napa Municipal Code and links to its section (read October 2026). State laws such as the ADU and SB 9 rules can allow more on a residential lot. General information, not legal advice — read the code text and check with the city before you build.
Development standards in RO
The general rule for a typical lot in this zone. Zoning tables often attach notes, such as rules for corner lots, lots next to a residential zone, or new subdivisions only. Open “code text” under a value to see the table cell or sentence it was read from.
| Maximum building height | 35 ft § 17.12.030 · code textTable row “Height-principal buildings-stories/height in feet whichever is more restrictive”, column “RO”: 3/35 |
|---|---|
| Maximum number of stories | 3 stories § 17.12.030 · code textTable row “Height-principal buildings-stories/height in feet whichever is more restrictive”, column “RO”: 3/35 |
| Minimum front setback | 20 ft § 17.12.030 · code textTable row “Arterial or collector”, column “RO”: 20 |
| Minimum side setback | 15 ft Applies: the table's side setback row; its side yard rows differ by stories (see list) § 17.12.030 · code textTable row “Arterial or collector”, column “RO”: 15 |
| Minimum rear setback | 15 ft Applies: 1 to 2.5 stories; 20 ft for 3 stories § 17.12.030 · code textTable row “Rear Yard (feet)”, column “RO”: 15 20 (3 stories) |
Uses in RO
Uses the code's use tables allow in RO, or allow with a permit. Each links to its page with the code section.
- Single-family home — Allowed
- Residential care home (7 or more) — Needs a conditional use permit
- Bed and breakfast — Needs a conditional use permit — see note
- Child care center — Needs a conditional use permit
When a different number applies
The code sets other values for particular lots, buildings or locations in RO:
- Minimum rear setback: 20 ft — 3 stories § 17.12.030
Not on this page
We did not find a general lot size, lot coverage, FAR, density limit for RO in the zoning tables we read. The code may still set one elsewhere — check the Napa Municipal Code.
Other Napa zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Napa's RO zone?
35 ft — Napa Municipal Code § 17.12.030.
What is the maximum number of stories in Napa's RO zone?
3 stories — Napa Municipal Code § 17.12.030.
What is the minimum front setback in Napa's RO zone?
20 ft — Napa Municipal Code § 17.12.030.
What is the minimum side setback in Napa's RO zone?
15 ft (the table's side setback row; its side yard rows differ by stories (see list)) — Napa Municipal Code § 17.12.030.
What is the minimum rear setback in Napa's RO zone?
15 ft (1 to 2.5 stories; 20 ft for 3 stories) — Napa Municipal Code § 17.12.030.
General information, not legal advice.
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