St Helena · Land use · Single-family home
Where is a single-family home allowed in St Helena?
In St Helena, a single-family home is allowed in 6 base zones (LR-1A, LR, MR, A-20, W and 1 more, 3 with a condition) and not allowed in 1 (St Helena use tables, read October 2026).
Key points
- Allowed: LR-1A, LR, MR, A-20, W and WW
- Not allowed: HR
Find your lot's zone on the city zoning map, then read its row. Every status below was read from the St Helena 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 single-family home can go
St Helena's code calls this use “Single-family dwelling”. 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 |
|---|---|---|
| LR-1A | Allowed | § 17.16.020 |
| LR | Allowed | § 17.16.020 |
| MR | Allowed | § 17.16.020 |
| A-20 | Allowed — see note Note 2: On parcels over two acres in size, the single-family dwelling must be accessory to an agricultural use. | § 17.19.020 |
| W Winery | Allowed — see note Note 2: On parcels over two acres in size, the single-family dwelling must be accessory to an agricultural use. | § 17.19.020 |
| WW Woodlands and Watershed | Allowed — see note Note 2: On parcels over two acres in size, the single-family dwelling must be accessory to an agricultural use. | § 17.19.020 |
Zones where it is not allowed
HR.
What else applies
- State law: State law lets most single-family lots add an ADU and a JADU (California ADU law) and a second home or a lot split under SB 9 (Gov. Code § 65852.21).
- Not covered here: Zone names are not stated in the packet text; The packet text is a flattened PDF table: rows were read by hand and some cell footnotes are shown as superscripts. Overlay zones and specific plans can also change the answer.
Other uses in St Helena
Who this affects
Frequently asked questions
Can I have a single-family home in the HR zone in St Helena?
No. St Helena's use table does not allow it in HR (§ 17.16.020).
Can I have a single-family home in the LR-1A zone in St Helena?
Yes. St Helena's use table lists it as allowed in LR-1A (§ 17.16.020).
General information, not legal advice.
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