Hercules · Zoning · I-R
Hercules I-R zoning: height, setbacks and lot size
In Hercules's I-R zone, buildings can be up to 40 ft tall, the front setback is 10 ft and the minimum lot size is 5,000 sq ft (Hercules code, read October 2026).
Key points
- Maximum building height: 40 ft
- Minimum front setback: 10 ft
- Minimum side setback: 5 ft
- Minimum rear setback: 20 ft
- Minimum lot size: 5,000 sq ft
- Maximum lot coverage: 50%
- Maximum floor area ratio (FAR): 0.50 (FAR does not apply to residential development.)
- Maximum density: 25 units per acre
I-R (Industrial Residential Mixed-Use District) is a zoning district in Hercules. Every value below was read from the Hercules 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-R
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 | 40 ft § 13-13.500 · code textTable row “Building Height (ft)”, column “I-R”: 40 |
|---|---|
| Minimum front setback | 10 ft See note 3 below the table in the code. § 13-13.500 · code textTable row “Front (ft)”, column “I-R”: 10 (3) Note 3: Lesser setbacks may be accepted in an approved planned development plan. |
| Minimum side setback | 5 ft See note 3 below the table in the code. § 13-13.500 · code textTable row “Side (ft)”, column “I-R”: 5 (3) Note 3: Lesser setbacks may be accepted in an approved planned development plan. |
| Minimum rear setback | 20 ft See note 3 below the table in the code. § 13-13.500 · code textTable row “Rear (ft)”, column “I-R”: 20 (3) Note 3: Lesser setbacks may be accepted in an approved planned development plan. |
| Minimum lot size | 5,000 sq ft See note 2 below the table in the code. § 13-13.500 · code textTable row “Lot Size (sq ft)”, column “I-R”: 5,000 (2) Note 2: Lesser lot size and dimensions may be accepted in an approved planned development plan. |
| Maximum lot coverage | 50% § 13-13.500 · code textTable row “Maximum Site Coverage”, column “I-R”: 50% |
| Maximum floor area ratio (FAR) | 0.50 Applies: FAR does not apply to residential development. See note 1 below the table in the code. § 13-13.500 · code textTable row “Density (FAR) (1)”, column “I-R”: 0.50 Note 1: FAR does not apply to residential development. |
| Maximum density | 25 units per acre § 13-13.500 · code textTable row “Density (du/ac)”, column “I-R”: 25 |
Not on this page
We did not find a general stories limit for I-R in the zoning tables we read. The code may still set one elsewhere — check the Hercules Municipal Code.
Other Hercules zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Hercules's I-R zone?
40 ft — Hercules Municipal Code § 13-13.500.
What is the minimum front setback in Hercules's I-R zone?
10 ft — Hercules Municipal Code § 13-13.500.
What is the minimum side setback in Hercules's I-R zone?
5 ft — Hercules Municipal Code § 13-13.500.
What is the minimum rear setback in Hercules's I-R zone?
20 ft — Hercules Municipal Code § 13-13.500.
What is the minimum lot size in Hercules's I-R zone?
5,000 sq ft — Hercules Municipal Code § 13-13.500.
General information, not legal advice.
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