Rio Vista · Zoning · R-1
Rio Vista R-1 zoning: height, setbacks and lot size
In Rio Vista's R-1 zone, buildings can be up to 35 ft tall, the front setback is 20 ft and the minimum lot size is 6,000 sq ft (Rio Vista code, read October 2026).
Key points
- Maximum building height: 35 ft
- Minimum front setback: 20 ft
- Minimum side setback: 5 ft (Interior lots)
- Minimum rear setback: 10 ft (closest a principal building may stand; the rear half also needs open land (20% of lot area) at least 15 ft deep)
- Minimum lot size: 6,000 sq ft
R-1 (R-1 Residential Low Density 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 R-1
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 § 17.08.060 · code textMaximum building height: 35 feet. |
|---|---|
| Minimum front setback | 20 ft § 17.08.040 · code textTable row “R-1”, column “Min. Yards Total (Ft.) Front”: 20 |
| Minimum side setback | 5 ft Applies: Interior lots § 17.08.040 · code textTable row “R-1”, column “Min. Yards Total (Ft.) Each Side Interior”: 5 |
| Minimum rear setback | 10 ft Applies: closest a principal building may stand; the rear half also needs open land (20% of lot area) at least 15 ft deep § 17.08.050 · code textNo principal building or structure attached thereto shall be closer than 10 feet to a rear lot line. |
| Minimum lot size | 6,000 sq ft § 17.08.040 · code textTable row “R-1”, column “Min. Bldg. Site Area (Sq. Ft.)”: 6,000 |
When a different number applies
The code sets other values for particular lots, buildings or locations in R-1:
- Minimum side setback: 10 ft — Corner lots § 17.08.040
Not on this page
We did not find a general stories, lot coverage, FAR, density limit for R-1 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 R-1 zone?
35 ft — Rio Vista Municipal Code § 17.08.060.
What is the minimum front setback in Rio Vista's R-1 zone?
20 ft — Rio Vista Municipal Code § 17.08.040.
What is the minimum side setback in Rio Vista's R-1 zone?
5 ft (interior lots) — Rio Vista Municipal Code § 17.08.040.
What is the minimum rear setback in Rio Vista's R-1 zone?
10 ft (closest a principal building may stand; the rear half also needs open land (20% of lot area) at least 15 ft deep) — Rio Vista Municipal Code § 17.08.050.
What is the minimum lot size in Rio Vista's R-1 zone?
6,000 sq ft — Rio Vista Municipal Code § 17.08.040.
General information, not legal advice.
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