Antioch · Zoning · RTC
Antioch RTC zoning: height, setbacks and lot size
In Antioch's RTC zone, generally buildings can be up to 50 ft tall, the front setback is 0 ft and the minimum lot size is 2,500 sq ft, with the conditions listed below (Antioch code, read October 2026).
Key points
- Maximum building height: 50 ft
- Minimum front setback: 0 ft (On the property line, except outdoor dining or plaza setbacks (up to one-third of lot depth), courtyards, or a uniform facade setback.)
- Minimum side setback: 0 ft
- Minimum rear setback: 0 ft
- Minimum lot size: 2,500 sq ft
- Maximum lot coverage: 100%
- Maximum density: 20 units per acre (Up to 45 per acre inside the area bounded by the railroad, I Street, Second Street and E Street, for mixed use with a use permit.)
RTC 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 RTC
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 | 50 ft § 9-5.601 · code textTable row “RTC j”, column “Maximum Height Feet b”: 50 |
|---|---|
| Minimum front setback | 0 ft Applies: On the property line, except outdoor dining or plaza setbacks (up to one-third of lot depth), courtyards, or a uniform facade setback. § 9-5.601 · code textTable row “RTC j”, column “Front Yard Minimum a, k”: 0 i |
| Minimum side setback | 0 ft § 9-5.601 · code textTable row “RTC j”, column “Minimum Side Yard Required in Feet e”: 0 ft. |
| Minimum rear setback | 0 ft § 9-5.601 · code textTable row “RTC j”, column “Minimum Rear Yard Required in Feet”: 0 ft. |
| Minimum lot size | 2,500 sq ft § 9-5.601 · code textTable row “RTC j”, column “Minimum Building Site Sq. Ft.”: 2,500 |
| Maximum lot coverage | 100% § 9-5.601 · code textTable row “RTC j”, column “Maximum Lot Coverage”: 100% |
| Maximum density | 20 units per acre Applies: Up to 45 per acre inside the area bounded by the railroad, I Street, Second Street and E Street, for mixed use with a use permit. § 9-5.601 · code textTable row “RTC j”, column “Maximum Density Allowed Units Per Gross Developable Acre d”: 20 h |
Not on this page
We did not find a general stories, FAR limit for RTC 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 RTC zone?
50 ft — Antioch Municipal Code § 9-5.601.
What is the minimum front setback in Antioch's RTC zone?
0 ft (on the property line, except outdoor dining or plaza setbacks (up to one-third of lot depth), courtyards, or a uniform facade setback) — Antioch Municipal Code § 9-5.601.
What is the minimum side setback in Antioch's RTC zone?
0 ft — Antioch Municipal Code § 9-5.601.
What is the minimum rear setback in Antioch's RTC zone?
0 ft — Antioch Municipal Code § 9-5.601.
What is the minimum lot size in Antioch's RTC zone?
2,500 sq ft — Antioch Municipal Code § 9-5.601.
General information, not legal advice.
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