Raleigh R-4: Residential-4 District Setback Requirements
In the City of Raleigh R-4: Residential-4 district, standard setbacks for detached houses under the conventional development option are 20 feet from primary and side streets, 10 feet from side lot lines, and 30 feet from rear lot lines. These requirements vary significantly depending on whether the property uses the Compact, Conservation, or Frequent Transit development options, and may be superseded by Residential Infill Compatibility rules for established neighborhoods [Sec. 2.2.1, Sec. 2.2.7, Sec. 2.7.1].
Conventional Development Option Setbacks
The Conventional Development option in the City of Raleigh is the standard pattern providing substantial yards for property owners. In the R-4: Residential-4 district, the following minimum setbacks apply to principal buildings:
| Building Type | Primary Street (Min) | Side Street (Min) | Side Lot Line (Min) | Rear Lot Line (Min) |
|---|---|---|---|---|
| Detached House | 20' | 20' | 10' | 30' |
| Attached House | 20' | 20' | 10' | 30' |
| Townhouse | 20' | 20' | 10' (site boundary) | 30' (site boundary) |
| Tiny House | 20' | 20' | 10' | 30' |
Note: For Townhouses in the R-4 district, the development is restricted to a maximum of two dwelling units [Sec. 2.2.3].
Compact and Conservation Development Option Setbacks
The City of Raleigh allows for reduced setbacks in the R-4: Residential-4 district when developers choose the Compact or Conservation options in exchange for providing common open space [Sec. 2.1.2].
Compact Development Setbacks (R-4)
| Building Type | Primary Street (Min) | Side Street (Min) | Side Lot Line (Min) | Rear Lot Line (Min) |
|---|---|---|---|---|
| Detached House | 10' | 10' | 10' | 20' |
| Attached House | 10' | 10' | 10' | 20' |
| Townhouse | 20' | 20' | 10' (site boundary) | 20' (site boundary) |
Conservation Development Setbacks (R-4)
| Building Type | Primary Street (Min) | Side Street (Min) | Side Lot Line (Min) | Rear Lot Line (Min) |
|---|---|---|---|---|
| Detached House | 10' | 10' | 10' | 20' |
| Attached House | 10' | 10' | 5' | 20' |
| Townhouse | 10' | 10' | 10' (site boundary) | 20' (site boundary) |
Frequent Transit Development Option Setbacks
When a property in the Raleigh R-4 district is located within a Frequent Transit Area (as designated in the Comprehensive Plan), reduced setbacks are permitted to encourage higher density [Sec. 2.7.1].
| Requirement Category | R-4 District Standard |
|---|---|
| Primary Street Setback (Min) | 10' |
| Side Street Setback (Min) | 10' |
| Side Lot Line Setback (Min) | 5' |
| Rear Lot Line Setback (Min) | 25' |
| From Alley (Min) | 4' or 20' |
Residential Infill Compatibility
The City of Raleigh applies "Infill Compatibility" standards to any building in an R-4 district if the site is 5 acres or less and the street section has been platted for at least 20 years [Sec. 2.2.7.B].
When these conditions are met, the Primary Street Setback is not a fixed number but is instead determined by a "comparative sample" of the four closest principal buildings on the same block face. The proposed building must be located within a range defined by:
- No closer than the smallest and no further than the largest primary street setback in the sample; or
- A percentage modification to the median setback of the sample based on the subject lot's width (e.g., within 15% of the median for lots 50' to 65' wide) [Sec. 2.2.7.C].
Accessory Structure Setbacks
In the Raleigh R-4 district, setbacks for accessory structures (like sheds or detached garages) depend on the size of the lot [Sec. 6.7.2]:
| Lot Size | From Primary Street | From Side Street (Min) | From Side/Rear Line (Min) |
|---|---|---|---|
| 10,000 sf to 40,000 sf | At or behind front wall | 15' | 5' |
| Less than 10,000 sf | At or behind front wall | 10' | 5' |
Allowed Encroachments
The Raleigh UDO allows certain building features to extend into the required setbacks [Sec. 1.5.4.D]:
- Porches, decks, and stoops (>1' height): May extend 12 feet into a required side or rear setback (but must remain 3 feet from the property line) and 9 feet into a primary or side street setback (but must remain 3 feet from the property line).
- Eaves and Overhangs: May extend up to 5 feet into a required setback (but must remain 3 feet from the property line).
- Chimneys and Bay Windows: May extend up to 4 feet into a required setback (but must remain 3 feet from the property line).
Sections Cited
- Article 1.5. Measurement, Exceptions & General Rules of Applicability
- Article 2.2. Conventional Development Option
- Article 2.3. Compact Development
- Article 2.4. Conservation Development Option
- Article 2.7. Frequent Transit Development Option
- Article 6.7. Accessory Uses & Structures