Orange County · Zoning · M1
Orange County M1 zoning: height, setbacks and lot size
In Orange County's M1 zone, generally buildings can be up to 35 ft tall, the front setback is 20 ft and the minimum lot size is 10,000 sq ft, with the conditions listed below (Orange County code, read October 2026).
Key points
- Maximum building height: 35 ft
- Minimum front setback: 20 ft (From ultimate street R/W line)
- Minimum side setback: 20 ft (required on one side only when the side line abuts a district other than agricultural, residential or estates; also 20 ft on a street side)
- Minimum rear setback: 10 ft (rear line next to a district other than agricultural, residential or estates, or on an alley; 20 ft on a street right-of-way line)
- Minimum lot size: 10,000 sq ft
M1 is a zoning district in Orange County. Every value below was read from the Orange County 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 M1
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 § 7-9-34.3 · code textTable row “Maximum Building Height (ft)”, column “M1”: 35 |
|---|---|
| Minimum front setback | 20 ft Applies: From ultimate street R/W line § 7-9-34.3 · code textTable row “Front Setback From Ultimate Street R/W Line”, column “M1”: 20 |
| Minimum side setback | 20 ft Applies: required on one side only when the side line abuts a district other than agricultural, residential or estates; also 20 ft on a street side § 7-9-34.3 · code textTable row “Side Setback From Ultimate Street R/W Line”, column “M1”: 20 |
| Minimum rear setback | 10 ft Applies: rear line next to a district other than agricultural, residential or estates, or on an alley; 20 ft on a street right-of-way line § 7-9-34.3 · code textTable row “Rear Setback From Ultimate Street R/W Line”, column “M1”: 20 |
| Minimum lot size | 10,000 sq ft § 7-9-34.3 · code textTable row “Minimum Building Site Area (sq ft)”, column “M1”: 10,000 |
When a different number applies
The code sets other values for particular lots, buildings or locations in M1:
- Minimum side setback: 10 ft — From alley § 7-9-34.3
- Minimum side setback: 30 ft — side line next to an agricultural, residential or estates district; 15 ft if no windows, doors or vents face the line § 7-9-34.3
- Minimum rear setback: 30 ft — rear line next to an agricultural, residential or estates district; 15 ft if no windows, doors or vents face the line § 7-9-34.3
Not on this page
We did not find a general stories, lot coverage, FAR, density limit for M1 in the zoning tables we read. The code may still set one elsewhere — check the Orange County Municipal Code.
Other Orange County zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Orange County's M1 zone?
35 ft — Orange County Municipal Code § 7-9-34.3.
What is the minimum front setback in Orange County's M1 zone?
20 ft (from ultimate street R/W line) — Orange County Municipal Code § 7-9-34.3.
What is the minimum side setback in Orange County's M1 zone?
20 ft (required on one side only when the side line abuts a district other than agricultural, residential or estates; also 20 ft on a street side) — Orange County Municipal Code § 7-9-34.3.
What is the minimum rear setback in Orange County's M1 zone?
10 ft (rear line next to a district other than agricultural, residential or estates, or on an alley; 20 ft on a street right-of-way line) — Orange County Municipal Code § 7-9-34.3.
What is the minimum lot size in Orange County's M1 zone?
10,000 sq ft — Orange County Municipal Code § 7-9-34.3.
General information, not legal advice.
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