Fontana · Zoning · RMU
Fontana RMU zoning: height, setbacks and lot size
In Fontana's RMU zone, generally buildings can be up to 75 ft tall, the front setback is 15 ft and the minimum lot size is 1 acre, with the conditions listed below (Fontana code, read October 2026).
Key points
- Maximum building height: 75 ft
- Minimum front setback: 15 ft (Abutting local streets)
- Minimum side setback: 0 ft (Abutting all other zones)
- Minimum rear setback: 0 ft (Abutting all other zones)
- Minimum lot size: 1 acre (applies only when new parcels are created)
- Maximum lot coverage: None
- Maximum floor area ratio (FAR): 1.0 (in mixed-use projects only 50 percent of the area for residential and accessory uses counts toward FAR)
RMU is a zoning district in Fontana. Every value below was read from the Fontana 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 RMU
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 | 75 ft § 30-494 · code textTable row “Maximum Building Heights”, column “RMU”: 75-foot |
|---|---|
| Minimum front setback | 15 ft Applies: Abutting local streets § 30-494 · code textTable row “Abutting local streets”, column “RMU”: 15-foot |
| Minimum side setback | 0 ft Applies: Abutting all other zones § 30-494 · code textTable row “Abutting all other zones”, column “RMU”: 0 |
| Minimum rear setback | 0 ft Applies: Abutting all other zones § 30-494 · code textTable row “Abutting all other zones”, column “RMU”: 0 |
| Minimum lot size | 1 acre Applies: applies only when new parcels are created § 30-494 · code textTable row “Minimum”, column “RMU”: 1 acre |
| Maximum lot coverage | None § 30-494 · code textTable row “Lot Coverage (percent)”, column “RMU”: none |
| Maximum floor area ratio (FAR) | 1.0 Applies: in mixed-use projects only 50 percent of the area for residential and accessory uses counts toward FAR The code attaches note d to this value. This page does not show it; read the code before relying on the number. § 30-494 · code textTable row “Maximum FAR”, column “RMU”: 1.0 (d) |
Uses in RMU
Uses the code's use tables allow in RMU, 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 minor use permit
- Private school — Needs a conditional use permit
When a different number applies
The code sets other values for particular lots, buildings or locations in RMU:
- Minimum front setback: 25 ft — Abutting freeways § 30-494
- Minimum front setback: 20 ft — Abutting major highways § 30-494
- Minimum front setback: 20 ft — Abutting primary highways § 30-494
- Minimum side setback: 20 ft — Abutting residential zone § 30-494
- Minimum rear setback: 20 ft — Abutting residential zone § 30-494
Not on this page
We did not find a general stories, density limit for RMU in the zoning tables we read. The code may still set one elsewhere — check the Fontana Municipal Code.
Other Fontana zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Fontana's RMU zone?
75 ft — Fontana Municipal Code § 30-494.
What is the minimum front setback in Fontana's RMU zone?
15 ft (abutting local streets) — Fontana Municipal Code § 30-494.
What is the minimum side setback in Fontana's RMU zone?
0 ft (abutting all other zones) — Fontana Municipal Code § 30-494.
What is the minimum rear setback in Fontana's RMU zone?
0 ft (abutting all other zones) — Fontana Municipal Code § 30-494.
What is the minimum lot size in Fontana's RMU zone?
1 acre (applies only when new parcels are created) — Fontana Municipal Code § 30-494.
General information, not legal advice.
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