All districts
Fence rules live in the Fence Ordinance (Code of Ordinances, Chapter 10, Article VIII), not the Zoning Ordinance. A permit is required for any fence (Sec. 10-318). On interior lots, fences between 3 and 6 feet tall may be built in side and rear yards and along the front building line, but never in the front yard (Sec. 10-324.a). On corner lots, fences are also barred from the required side yard abutting a street, except that where two corner-lot rear yards are adjacent, a fence may stand in the street-side yard at least 10 feet from the lot line (Sec. 10-324.b).
On lakefront lots, sight-obscuring privacy fences must stay within the building envelope set by the side and rear setbacks (Sec. 10-324.d; Zoning Ordinance Section 5.5). Barbed wire, electrified fences, and sharp or pointed toppers are prohibited (Sec. 10-326; Sec. 10-327). Supporting posts and hardware must face the interior of the fence owner's lot unless the neighbor consents in writing (Sec. 10-322.d).