R-3 Zone in Chattanooga, TN
R-3 zoning district rules in Chattanooga, TN. Permitted uses, setbacks, height limits, and lot coverage requirements.
The R-3 zone in Chattanooga, TN 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 15 ft front setback, 5 ft side setback, and 10 ft rear setback. Maximum building height is 45 feet (3 stories). Maximum lot coverage is 60%.
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 | 15 feet |
| Side Setback | 5 feet |
| Rear Setback | 10 feet |
Chattanooga City Code — R-3 allows duplexes and small multifamily.
Height Limits
- Max Height
- 45 feet
- Max Stories
- 3
Chattanooga City Code.
Lot Coverage
- Max Coverage
- 60%
Chattanooga City Code — allows higher coverage for multifamily.
Parking Requirements
Single-family: 2 spaces per single-family dwelling. Chattanooga is auto-dependent outside the downtown and Northshore areas. Multi-family: 1.5 spaces per unit. CARTA bus and the free electric shuttle in downtown reduce parking needs in the urban core.
Source: Chattanooga City Code — Accessory Dwelling Unit and Zoning provisions. Last verified April 6, 2026. View source