7.2.1.2 Area Requirements
In any district where a front yard is required, no structure, no fence, or planting shall be maintained between a plane three and one-half feet above curb level and a plane seven and one-half feet above curb level in order to afford traffic visibility across the corner within that part of the required front or side yard which is within a triangle bounded by the street lot line and straight line drawn between points on each such lot line twenty-five feet from the intersection of said lots or extensions thereto.
Fences 7 feet and under do not require a permit but must still abide by setbacks that are previously stated.