St Helena · Zoning · I
St Helena I zoning: height, setbacks and lot size
In St Helena's I zone, generally buildings can be up to 45 ft tall, the front setback is 25 ft and the minimum lot size is 20,000 sq ft, with the conditions listed below (St Helena code, read October 2026).
Key points
- Maximum building height: 45 ft
- Minimum front setback: 25 ft (from any street; 35 ft from a residential, A-20, or W district)
- Minimum lot size: 20,000 sq ft
- Maximum floor area ratio (FAR): 0.50 (for uses including <90% warehousing)
I (Industrial) 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 I
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 | 45 ft § 17.18.030 · code textTable row “Principal Structure”, column “**I**”: 45 ft |
|---|---|
| Minimum front setback | 25 ft Applies: from any street; 35 ft from a residential, A-20, or W district § 17.18.030 · code textTable row “Min. Front Setback”, column “**I**”: 25 ft from<br>any street<br>35 ft from a<br>residential, |
| Minimum lot size | 20,000 sq ft § 17.18.030 · code textTable row “Min. Lot Area”, column “**I**”: 20,000 sq ft |
| Maximum floor area ratio (FAR) | 0.50 Applies: for uses including <90% warehousing § 17.18.030 · code textTable row “FAR”, column “**I**”: Max. 0.50 for uses<br>including <90%<br>warehousing<br>Max. 0.60 for uses<br>including><br>90%<br>warehousing |
Uses in I
Uses the code's use tables allow in I, or allow with a permit. Each links to its page with the code section.
- Kennel — Needs a conditional use permit
When a different number applies
The code sets other values for particular lots, buildings or locations in I:
- Maximum floor area ratio (FAR): 0.60 — for uses including >90% warehousing § 17.18.030
Not on this page
We did not find a general stories, side setback, rear setback, lot coverage, density limit for I 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 I zone?
45 ft — St Helena Municipal Code § 17.18.030.
What is the minimum front setback in St Helena's I zone?
25 ft (from any street; 35 ft from a residential, A-20, or W district) — St Helena Municipal Code § 17.18.030.
What is the minimum lot size in St Helena's I zone?
20,000 sq ft — St Helena Municipal Code § 17.18.030.
What is the maximum floor area ratio (far) in St Helena's I zone?
0.50 (for uses including <90% warehousing) — St Helena Municipal Code § 17.18.030.
General information, not legal advice.
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