Dallas Corner Lot Fence and Visibility Triangle Regulations
In the City of Dallas, fences on corner lots are generally restricted to a maximum height of four feet within required front yards and must never obstruct established visibility triangles. These triangles typically extend 45 feet from the intersection of street curb lines, and within this area, any object—including fences and plant life—must stay below 2.5 feet or above 8 feet in height to ensure unobstructed sightlines for traffic safety [Section 51A-4.602].
Dallas Fence Height and Setback Standards
The City of Dallas regulates the height and placement of fences based on the specific yard type and the zoning of the property. For residential districts, fences are subject to stricter height limits in the front yard to maintain neighborhood aesthetics and safety. On a corner lot, the City of Dallas may consider both street-facing sides as "required front yards," depending on the specific lot configuration [Section 51A-4.401].
General Fence Height Limits
| Location within Lot | Maximum Allowed Height |
|---|---|
| Required Front Yard (General) | 4 feet [Section 51A-4.602(a)(2)] |
| Side or Rear Yard (General) | 9 feet [Section 51A-4.602(a)(2)] |
| Multifamily District Front Yard | 6 feet (if specific conditions are met) [Section 51A-4.602(a)(4)] |
| Within a Visibility Triangle | 2.5 feet [Section 51A-4.602(d)] |
Setbacks and Openness Requirements
In the City of Dallas, if a single-family district fence exceeds 50 percent opacity (i.e., it is not at least 50 percent open), it cannot be located less than five feet from the front lot line [Section 51A-4.602(a)(3)]. Additionally, in multifamily districts, gates for vehicular traffic must be set back at least 20 feet from the back of the street curb [Section 51A-4.602(a)(4)].
Dallas Visibility Triangle Requirements
The City of Dallas mandates "visual obstruction regulations" to prevent accidents at intersections, driveways, and alleys. These regulations define a "visibility triangle," a three-dimensional space where sight-blocking objects are strictly prohibited between certain heights.
Dimensions of Visibility Triangles
The size of the horizontal triangle is determined by the type of intersection and the zoning of the City of Dallas property.
| Type of Intersection | Triangle Leg Length |
|---|---|
| Standard Street Intersection (Corner Lot) | 45 feet from the intersection of curb lines [Section 51A-4.602(d)(2)(A)] |
| Central Area District Intersections | 30 feet from the intersection of curb lines [Section 51A-4.602(d)(2)(B)] |
| Intersection of Driveway or Alley with a Street | 20 feet from the intersection of the driveway/alley edge and the street curb [Section 51A-4.602(d)(2)(C)] |
Vertical Clear Zone
Within the dimensions listed above, the City of Dallas prohibits any structure, fence, berm, or plant life that falls within the following vertical range:
- Minimum Obstruction Height: 2.5 feet above the top of the adjacent street curb.
- Maximum Obstruction Height: 8 feet above the top of the adjacent street curb.
Items located within the visibility triangle must be shorter than 2.5 feet or high-branching trees that provide a clear view beneath their canopy up to 8 feet [Section 51A-4.602(d)(1)].
Prohibited Fence Materials in Dallas
The City of Dallas prohibits the use of certain materials for fence construction in all zoning districts to maintain public safety and community standards:
- Sheet metal
- Corrugated metal
- Fiberglass panels
- Plywood
- Plastic materials (unless they are preformed fence pickets or panels at least 7/8 of an inch thick)
- Barbed wire and razor wire (strictly prohibited in non-agricultural residential districts) [Section 51A-4.602(a)(9)].
Exceptions and Appeals
The City of Dallas Board of Adjustment has the authority to grant special exceptions to these standards if the board finds that a specific item or fence height will not constitute a traffic hazard [Section 51A-4.602(d)(3)]. However, the City of Dallas specifically prohibits the Board of Adjustment from granting a special exception to the height requirements for screening (required fences) around off-street parking [Section 51A-4.301(f)(4)].
Sections Cited
- Section 51A-2.102
- Section 51A-4.301
- Section 51A-4.401
- Section 51A-4.602