It is not part of the FBC but it is part of the land development code in south Florida. So yes if two neighbors decide to build a fence between them, the person who pulls the permit will need to have the finish side face their neighbor. It also needs to be build entirely on their side and not right on the property line. Our code has a huge section on just setbacks and transparency. We are now required to set back 3 feet minimum from the property line with no gate swinging past the property line when fully opened, so 5' gates set back 5'.
Land Development Code Sec 809.7.6 &. 22-141. (c): The finished side of all fences shall face outward to the abutting property or right-of way. The safety barrier shall be erected either around the swimming pool or around the premises on which the swimming pool is erected; in either event, it shall enclose the area entirely, prohibiting unrestrained admittance to the enclosed area.
FBC 2017 Section 2328: HIGH VELOCITY HURRICANE ZONES: WOOD FENCES
2328.1 Wood fences, so located on a property that by zoning regulations they cannot be used as a wall of a building, shall be constructed to meet the minimum specifications in
2328.2 and 2328.3.
2328.2 Fences not exceeding 6 feet (1829 mm) in height, shall be constructed to meet the following minimum requirements from nominal 4 X 4 X 8 posts No. 2 grade or
better spaced 4 feet (1219mm) on center, and embedded 2 feet (610 mm) into a concrete footing 10 inches (254 mm) in diameter and 2 feet (610 mm) deep.
2328.3 Fences not exceeding 5 feet (1524 mm) or 4 feet (1219 mm) in height shall constructed as provided in 2328.2 except that the spacing of posts may be increased to 5 feet
(1524 mm) and 6 feet (1829 mm) on center for those heights respectively.
Wood fences not exceeding 6’-0” in height may be constructed to meet the following minimum requirements:
(1) Vertical post of nominal 4x4 spaced a maximum of 4’ o/c for 6’ high fences; 5’ o/c for 5’ high fences, 6’ o/c for 4’ high fence.
(2) Post shall be embedded 2’0” into concrete footing 10” in diameter and 2’0” deep.
(3) 2x4 material shall be fastened with (2) #16D galv. nails at each attachment.
(4) All lumber shall be a minimum of #2 grade or better.
(5) All fasteners shall be corrosion resistant.
(6) Fence boards less than 8” wide shall be fastened with (2) #8 D galv. nails at each connection point.