Setback Standards for the OP-: Office Park District in Raleigh
In the City of Raleigh's OP-: Office Park district, the standard minimum primary and side street setbacks are 5 feet for most building types, while interior side and rear setbacks are 0 or 6 feet. These requirements change significantly if a specific frontage is applied; for example, the Parkway Frontage (-PK) increases the minimum primary street building setback to 50 feet. Additionally, if an OP-: Office Park property abuts a residential district, specific neighborhood transition setbacks (Zones A, B, and C) must be followed to provide adequate buffering and screening.
Base Setback Requirements
The base dimensional standards for the OP-: Office Park district vary depending on the allowed building type being constructed. In the City of Raleigh, the primary building types allowed in this district include General Buildings, Mixed Use Buildings, Civic Buildings, and Open Lots [Sec. 1.4.2].
Base Setbacks by Building Type
| Setback Type | General Building | Mixed Use Building | Civic Building | Open Lot |
|---|---|---|---|---|
| Primary Street (min) | 5' | 5' | 10' | 10' |
| Side Street (min) | 5' | 5' | 10' | 10' |
| Side Lot Line (min) | 0' or 6' | 0' or 6' | 0' or 6' | 10' |
| Rear Lot Line (min) | 0' or 6' | 0' or 6' | 0' or 6' | 10' |
| From Alley (min) | 5' | 5' | 5' | 10' |
Note: For General, Mixed Use, and Civic buildings, the side and rear setbacks are typically 0' or 6' [Sec. 3.2.5, Sec. 3.2.6, Sec. 3.2.7].
Frontage-Specific Setback Adjustments
Frontages in the City of Raleigh are applied to properties to mandate specific development patterns along the street edge. When a frontage is assigned to a property in the OP-: Office Park district, its requirements control over the base dimensional standards [Sec. 3.4.1].
Parkway Frontage (-PK)
The Parkway Frontage is intended to provide a heavily landscaped buffer. In the City of Raleigh OP-: Office Park district, the following additional setbacks apply under this frontage:
- Building Setback from Primary Street (min): 50'
- Parking Setback from Primary Street (min): 50' [Sec. 3.4.3].
Urban Frontages and Build-to Ranges
Several frontages use "Build-to" ranges rather than simple minimum setbacks. This requires a certain percentage of the building's facade to be located within a specific area [Sec. 1.5.6]. For the City of Raleigh OP-: Office Park district, these include:
| Frontage Type | Primary Street Build-to (min/max) | Side Street Build-to (min/max) |
|---|---|---|
| Parking Limited (-PL) | Base Standard / 100' | 0' / 100' |
| Green (-GR) | 20' / 50' | 20' / 50' |
| Urban Limited (-UL) | 0' / 20' | 0' / 20' |
| Urban General (-UG) | 0' / 20' | 0' / 20' |
| Green Plus (-GP) | 30' / 50' | 20' / 50' |
Neighborhood Transition Setbacks
The City of Raleigh requires neighborhood transitions when an OP-: Office Park district site immediately abuts a residential district boundary (R-1, R-2, R-4, R-6, or R-10) [Sec. 3.5.1]. These transitions establish three zones that impact building placement:
- Zone A (Protective Yard): This is the area immediately abutting the district boundary line. It consists of vegetative landscaping and walls/fences. No buildings or structures are allowed in Zone A. The width varies based on the type of yard required (e.g., Type 1 is 10', Type 2 is 20', Type 3 is 50') [Sec. 3.5.2, Sec. 3.5.3].
- Zone B (Use Restricted): This zone starts at the inside edge of Zone A and ends 50 feet from the district boundary line. It is intended for low-intensity uses like surface parking or landscaping, but limits building height for accessory structures [Sec. 3.5.2, Sec. 3.5.4].
- Zone C (Height and Form): This zone extends from 50 to 100 feet from the district boundary line. While all structures allowed in the zoning district are permitted here, they are subject to a 45-degree height plane starting at 40 feet at the Zone C line [Sec. 3.5.5].
Setback Encroachments
The City of Raleigh Unified Development Ordinance allows certain building features to encroach into required setbacks:
- Porches, decks, and stoops: May extend 12 feet into a side or rear setback (staying 3 feet from the property line) and 9 feet into a primary or side street setback (staying 3 feet from the property line) [Sec. 1.5.4.D].
- Balconies: May extend up to 6 feet into a required setback, provided they remain at least 3 feet from the vertical plane of any lot line [Sec. 1.5.4.D].
- Eaves and Awnings: May extend up to 5 feet into a required setback [Sec. 1.5.4.D].
Sections Cited
- Article 1.4. Building Types
- Article 3.2. Base Dimensional Standards
- Sec. 3.1.1. District Intent Statements
- Sec. 3.2.5. General Building
- Sec. 3.2.6. Mixed Use Building
- Sec. 3.2.7. Civic Building
- Sec. 3.2.8. Open Lot
- Sec. 3.4.1. Purpose and Intent
- Sec. 3.4.3. Parkway (-PK)
- Sec. 3.5.1. Applicability (Neighborhood Transitions)
- Sec. 3.5.2. Transition Zones
- Sec. 3.5.3. Zone A: Protective Yard
- Sec. 3.5.4. Zone B: Use Restricted
- Sec. 3.5.5. Zone C: Height and Form
- Sec. 1.5.4. Building Setbacks
- Sec. 1.5.6. Build-to