R-3 Zone in Boise, ID
R-3 zoning district rules in Boise, ID. Permitted uses, setbacks, height limits, and lot coverage requirements.
The R-3 zone in Boise, ID is a residential district (Multi-Family Low Density). Permits multi-family housing at low density, typically up to 4 units. Allows triplexes and fourplexes in addition to single-family and duplex uses. This zone requires a 10 ft front setback, 5 ft side setback, and 10 ft rear setback. Maximum building height is 55 feet (4 stories). Maximum lot coverage is 70%.
Common Permitted Uses
- Single-family homes
- Duplexes
- Triplexes
- Fourplexes
Permits multi-family housing at low density, typically up to 4 units. Allows triplexes and fourplexes in addition to single-family and duplex uses.
Setback Requirements
| Setback Type | Requirement |
|---|---|
| Front Setback | 10 feet |
| Side Setback | 5 feet |
| Rear Setback | 10 feet |
Boise City Code Title 11. R-3 — multi-family residential, higher density.
Height Limits
- Max Height
- 55 feet
- Max Stories
- 4
Boise City Code Title 11.
Lot Coverage
- Max Coverage
- 70%
Boise City Code Title 11.
Parking Requirements
Single-family: 2 spaces per single-family dwelling in R-1A through R-1D zones. Boise City Code Title 11. Multi-family: 1.5-2 spaces per unit in R-2 and R-3 zones depending on unit size.
Source: Boise City Code Title 11, Section 11-04-07 — Accessory Dwelling Units. Last verified April 5, 2026. View source