Antioch · Zoning · R-4
Antioch R-4 zoning: height, setbacks and lot size
In Antioch's R-4 zone, buildings can be up to 35 ft tall and the minimum lot size is 6,000 sq ft (Antioch code, read October 2026).
Key points
- Maximum building height: 35 ft
- Minimum side setback: 5 ft (Interior side yard. Two-story single-family lots need one side yard of 10 feet, as do at least 25% of lots in a subdivision.)
- Minimum rear setback: 20 ft
- Minimum lot size: 6,000 sq ft
- Maximum lot coverage: 40%
- Maximum density: 4 units per acre
R-4 is a zoning district in Antioch. Every value below was read from the Antioch 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 R-4
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 § 9-5.601 · code textTable row “R-4”, column “Maximum Height Feet b”: 35 |
|---|---|
| Minimum side setback | 5 ft Applies: Interior side yard. Two-story single-family lots need one side yard of 10 feet, as do at least 25% of lots in a subdivision. § 9-5.601 · code textTable row “R-4”, column “Minimum Side Yard Required in Feet e”: 5 ft. |
| Minimum rear setback | 20 ft § 9-5.601 · code textTable row “R-4”, column “Minimum Rear Yard Required in Feet”: 20 ft. |
| Minimum lot size | 6,000 sq ft § 9-5.601 · code textTable row “R-4”, column “Minimum Building Site Sq. Ft.”: 6,000 |
| Maximum lot coverage | 40% § 9-5.601 · code textTable row “R-4”, column “Maximum Lot Coverage”: 40% |
| Maximum density | 4 units per acre § 9-5.601 · code textTable row “R-4”, column “Maximum Density Allowed Units Per Gross Developable Acre d”: 4 du/acre |
Uses in R-4
Uses the code's use tables allow in R-4, or allow with a permit. Each links to its page with the code section.
- Single-family home — Allowed
- Child care center — Needs an use permit
Not on this page
We did not find a general stories, front setback, FAR limit for R-4 in the zoning tables we read. The code may still set one elsewhere — check the Antioch Municipal Code.
Other Antioch zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Antioch's R-4 zone?
35 ft — Antioch Municipal Code § 9-5.601.
What is the minimum side setback in Antioch's R-4 zone?
5 ft (interior side yard. Two-story single-family lots need one side yard of 10 feet, as do at least 25% of lots in a subdivision) — Antioch Municipal Code § 9-5.601.
What is the minimum rear setback in Antioch's R-4 zone?
20 ft — Antioch Municipal Code § 9-5.601.
What is the minimum lot size in Antioch's R-4 zone?
6,000 sq ft — Antioch Municipal Code § 9-5.601.
What is the maximum lot coverage in Antioch's R-4 zone?
40% — Antioch Municipal Code § 9-5.601.
General information, not legal advice.
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