St. Tammany Parish, LA Fence Regulations: Height Limits (2026)

2(B) requires that clear vision areas be free from any visual obstruction between a height of 3 and 8 feet as measured from the crown of the street, and it names a fence specifically among the prohibited obstructions when it stands more than 3 feet tall. The same subsection then carves out an exception for open fencing: a fence with a portion above 3 feet in height that meets the definition of an open fence is permitted, provided any fence columns within the 3-to-8-foot zone are no more than 18 inches wide and spaced at least 5 feet apart, and provided no vines, shrubs, or screening material are allowed to grow on the fence and block the sight line.

Chapter 100's definitions section sharpens what counts as an acceptable open design: a Fence, Decorative built of wrought iron, picket, or similar material must be seen through, with not more than one-third opaque coverage, and a picket fence itself cannot rise greater than 36 inches high, with posts capped at 44 inches. Outside those sight-triangle and decorative-fence rules, the parish's general permitting standard in Section 300-2(B)(1)(b) exempts fences not over 7 feet high from needing a building permit at all, which functions in practice as the ceiling most residential fence-builders in the unincorporated parish design to, since anything taller triggers full permit review.

2(D): a standard street-intersection triangle runs 25 feet along each intersecting curb line from the point where they meet, while an accessway sight triangle at a private driveway runs 15 feet along the driveway and 25 feet along the street.