Ventura County R1 zoning: height, setbacks and lot size

R1 is a zoning district in Ventura County. Every value below was read from the Ventura 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.

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.

Uses the code's use tables allow in R1, or allow with a permit. Each links to its page with the code section.

• Single-family home — Allowed
• Bed and breakfast — Needs a conditional use permit — see note
• Child care center — Needs a conditional use permit
• Growing crops — Allowed — see note
• Horses and stables — Needs a conditional use permit

The code sets other values for particular lots, buildings or locations in R1:

• Maximum building height: 35 ft — Height may be increased above 25 ft if each side yard setback is at least 15 ft or as specified by permit § 8106-1.1
• Minimum side setback: 10 ft — Reverse Corner Lots: Street Side § 8106-1.1

We did not find a general stories, lot coverage, FAR, density limit for R1 in the zoning tables we read. The code may still set one elsewhere — check the Ventura County Municipal Code.

• CRE
• R2
• RB
• RBH
• RE
• RO