Rio Vista · Zoning · O-A-R
Rio Vista O-A-R zoning: height, setbacks and lot size
In Rio Vista's O-A-R zone, buildings can be up to 40 ft tall, the front setback is 20 ft and the minimum lot size is 10,000 sq ft (Rio Vista code, read October 2026).
Key points
- Maximum building height: 40 ft
- Minimum front setback: 20 ft
- Minimum side setback: 10 ft
- Minimum rear setback: 10 ft
- Minimum lot size: 10,000 sq ft
- Maximum lot coverage: 60%
O-A-R (OPEN AREA RESORT DISTRICT) is a zoning district in Rio Vista. Every value below was read from the Rio Vista 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 O-A-R
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 | 40 ft § 17.36.040 · code textMaximum allowable height: 40 feet. |
|---|---|
| Minimum front setback | 20 ft § 17.36.040 · code textMinimum front yard: 20 feet. |
| Minimum side setback | 10 ft § 17.36.040 · code textMinimum side yard required: 10 feet. |
| Minimum rear setback | 10 ft § 17.36.040 · code textMinimum rear yard required: 10 feet. |
| Minimum lot size | 10,000 sq ft § 17.36.040 · code textMinimum building site required: 10,000 square feet. |
| Maximum lot coverage | 60% § 17.36.040 · code textMaximum allowable lot coverage by all structures: 60%. |
Not on this page
We did not find a general stories, FAR, density limit for O-A-R in the zoning tables we read. The code may still set one elsewhere — check the Rio Vista Municipal Code.
Other Rio Vista zoning districts
Who this affects
Frequently asked questions
What is the maximum building height in Rio Vista's O-A-R zone?
40 ft — Rio Vista Municipal Code § 17.36.040.
What is the minimum front setback in Rio Vista's O-A-R zone?
20 ft — Rio Vista Municipal Code § 17.36.040.
What is the minimum side setback in Rio Vista's O-A-R zone?
10 ft — Rio Vista Municipal Code § 17.36.040.
What is the minimum rear setback in Rio Vista's O-A-R zone?
10 ft — Rio Vista Municipal Code § 17.36.040.
What is the minimum lot size in Rio Vista's O-A-R zone?
10,000 sq ft — Rio Vista Municipal Code § 17.36.040.
General information, not legal advice.
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