R-1 Zone in Tucson, AZ
R-1 zoning district rules in Tucson, AZ. Permitted uses, setbacks, height limits, and lot coverage requirements.
The R-1 zone in Tucson, AZ is a residential district (Single-Family Residential). Permits one dwelling unit per lot. Typically the most restrictive residential zone. Designed to preserve the character of established single-family neighborhoods. This zone requires a 25 ft front setback, 5 ft side setback, and 25 ft rear setback. Maximum building height is 30 feet (2 stories). Maximum lot coverage is 40%.
Common Permitted Uses
- Single-family homes
Permits one dwelling unit per lot. Typically the most restrictive residential zone. Designed to preserve the character of established single-family neighborhoods.
Setback Requirements
| Setback Type | Requirement |
|---|---|
| Front Setback | 25 feet |
| Side Setback | 5 feet |
| Rear Setback | 25 feet |
Tucson UDC. Standard single-family residential zone in most established Tucson neighborhoods.
Height Limits
- Max Height
- 30 feet
- Max Stories
- 2
Tucson UDC. Standard single-family residential.
Lot Coverage
- Max Coverage
- 40%
Tucson UDC. Standard single-family residential.
Parking Requirements
Single-family: 2 covered parking spaces required per single-family dwelling. Covered parking is strongly encouraged in Tucson's extreme heat to protect vehicles. Multi-family: 1.5–2 spaces per unit. Sun Tran bus routes reduce requirements near transit corridors.
Source: Tucson Unified Development Code Section 6.7.4 — Accessory Dwelling Units; Arizona HB 2297 (Laws 2024, Chapter 204). Last verified April 6, 2026. View source