RN-3 Zone in Knoxville, TN
RN-3 zoning district rules in Knoxville, TN. Permitted uses, setbacks, height limits, and lot coverage requirements.
The RN-3 zone in Knoxville, TN 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 20 ft front setback, 5 ft side setback, and 20 ft rear setback. Maximum building height is 35 feet (2 stories). Maximum lot coverage is 50%.
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 | 20 feet |
| Side Setback | 5 feet |
| Rear Setback | 20 feet |
Knoxville Zoning Ordinance — RN-3 Urban Residential. Common in older neighborhoods near downtown.
Height Limits
- Max Height
- 35 feet
- Max Stories
- 2
Knoxville Zoning Ordinance.
Lot Coverage
- Max Coverage
- 50%
Knoxville Zoning Ordinance.
Parking Requirements
Single-family: 2 spaces per single-family dwelling. Knoxville is auto-dependent outside the downtown and Old City areas. Multi-family: 1–2 spaces per unit. Areas near UT campus may have reduced requirements due to student reliance on walking/biking.
Source: Knoxville Zoning Ordinance — Accessory Dwelling Unit provisions. Last verified April 6, 2026. View source