All districts
Residential fences are regulated by the fence ordinance in Chapter 14 of the Code of Ordinances, not the zoning ordinance. A permit from the Building Department is required before building, enlarging, or rebuilding any fence on subdivision property (Sec. 14-25).
Heights (Sec. 14-26.d): privacy fences on or parallel to rear or side lot lines, 6 feet maximum; other fences on or parallel to rear or side lot lines, 54 inches maximum; and the ordinance states fences on a property line carry a 4 foot minimum height. Posts go 42 inches deep, spaced no more than 10 feet, and the finished side must face the neighbor or street (Sec. 14-26.e).
Location (Sec. 14-27): fences generally sit on the lot line; on interior lots they may occupy side and rear yards and run along the front building line but may not extend into the front yard; on corner lots they may extend into the street-side yard; on through lots the section as written limits fences to side and rear yards and the front building line along the street providing primary access, at 4 to 6 feet above grade (Sec. 14-27.a.3.c). No obscuring fence may stand in the 20 foot clear vision triangle at intersections. Double fencing is prohibited (no fence within 3.5 feet of another). Permitted types include wood or vinyl privacy, chain link, decorative aluminum, wrought iron, split rail, and picket; prohibited types include wire, glass, concrete or masonry, slat or fabric-covered, electric, barbed or razor wire, and spiked fences (Sec. 14-26.b-c). In the zoning ordinance, no front-yard fence or wall may materially impede vision above 2 feet (Sec. 10.0311.E.1). Fence variances go to the Zoning Board of Appeals (Sec. 14-29).