St Helena · Zoning · BPO
St Helena BPO zoning: height, setbacks and lot size
In St Helena's BPO zone, buildings can be up to 30 ft tall, the front setback is 20 ft and the minimum lot size is 7,000 sq ft (St Helena code, read October 2026).
Key points
- Maximum building height: 30 ft
- Minimum front setback: 20 ft
- Minimum side setback: 10 ft
- Minimum rear setback: 15 ft
- Minimum lot size: 7,000 sq ft
- Maximum floor area ratio (FAR): 0.50
- Maximum density: 20 du/ac
BPO (Business and Professional Office) is a zoning district in St Helena. Every value below was read from the St Helena 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 BPO
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 | 30 ft § 17.18.030 · code textTable row “Principal Structure”, column “**BPO**”: 30 ft |
|---|---|
| Minimum front setback | 20 ft § 17.18.030 · code textTable row “Min. Front Setback”, column “**BPO**”: 20 ft |
| Minimum side setback | 10 ft § 17.18.030 · code textTable row “Min. Interior Side<br>Setback”, column “**BPO**”: 10 ft |
| Minimum rear setback | 15 ft § 17.18.030 · code textTable row “Min. Rear Setback”, column “**BPO**”: 15 ft |
| Minimum lot size | 7,000 sq ft § 17.18.030 · code textTable row “Min. Lot Area”, column “**BPO**”: 7,000 sq ft |
| Maximum floor area ratio (FAR) | 0.50 § 17.18.030 · code textTable row “FAR”, column “**BPO**”: Max. 0.50 |
| Maximum density | 20 du/ac § 17.18.030 · code textTable row “Density”, column “**BPO**”: Max. 20 du/ac |
Uses in BPO
Uses the code's use tables allow in BPO, or allow with a permit. Each links to its page with the code section.
- Apartment building — Needs a conditional use permit — see note
- Child care center — Needs a conditional use permit
Not on this page
We did not find a general stories, lot coverage limit for BPO in the zoning tables we read. The code may still set one elsewhere — check the St Helena Municipal Code.
Other St Helena zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in St Helena's BPO zone?
30 ft — St Helena Municipal Code § 17.18.030.
What is the minimum front setback in St Helena's BPO zone?
20 ft — St Helena Municipal Code § 17.18.030.
What is the minimum side setback in St Helena's BPO zone?
10 ft — St Helena Municipal Code § 17.18.030.
What is the minimum rear setback in St Helena's BPO zone?
15 ft — St Helena Municipal Code § 17.18.030.
What is the minimum lot size in St Helena's BPO zone?
7,000 sq ft — St Helena Municipal Code § 17.18.030.
General information, not legal advice.
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