Fence Requirements: Allen vs McKinney
How do fence requirements rules compare between Allen, TX and McKinney, TX?
Allen and McKinney have similar restriction levels.
Allen, TX
Collin County
Allen enforces a 25-foot sight visibility triangle at all corner lots and a smaller triangle at driveway approaches. Fences, hedges, and landscaping within the triangle cannot exceed 30 inches in height.
View full Allen rules →McKinney, TX
Collin County
Corner lots in McKinney must maintain a visibility triangle at intersections where fences, walls, and landscaping cannot exceed 3 feet in height within 25 feet of curbs per Engineering Design Standards.
View full McKinney rules →Key Facts Comparison
| Fact | Allen | McKinney |
|---|---|---|
| Triangle | 25 feet each leg | - |
| Max Height | 30 inches | 3 ft |
| Applies To | Fences, hedges, signs | - |
| Driveways | 10 ft approach triangle | - |
| Enforcement | Code Compliance | Engineering/Code |
| Sight Triangle | - | 25 ft x 25 ft |
| Includes | - | Fences and hedges |
Highlighted rows indicate differences between cities.
Allen FAQ
What is a sight visibility triangle in Allen?
A 25 ft x 25 ft triangle at corner lots where nothing between 30 inches and 8 feet tall is allowed, so drivers can see cross traffic.
Can I have a tree in my corner-lot front yard?
Yes, but canopies must be trimmed to 8 feet clear and trunks cannot obstruct sightlines. Low hedges and decorative walls are the usual problem.
Does the 30-inch rule apply to my driveway too?
Yes, a smaller 10-foot triangle applies at driveway approaches so vehicles backing out can see pedestrians and cyclists.
McKinney FAQ
Does the visibility triangle apply at driveways too?
Yes. The 25-foot triangle applies where a driveway meets a public street, not just street-to-street corners. Solid landscape features and fences over 3 feet are prohibited in that area.
Can I keep a mature tree in the visibility triangle?
Only if the canopy is limbed up to 8 feet so drivers have clear sightlines through the trunk zone. Shrubs and lower branches in the 3-to-8-foot range must be removed.
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