Greensboro, NC Fence Regulations: Retaining Walls (2026)

4(C) of the Land Development Ordinance lists what may encroach into a required front, side, or rear setback, and compliance with Sec. 16-8 of the City Code (cross-visibility at intersections) is a condition on every item in that list. Most encroachments, landscaping features, pet shelters, HVAC equipment, mailboxes and fences, carry no stated height cap in this subsection. Retaining walls are treated differently: item 9 permits them within any required setback, but where the wall sits inside a single-family home's street setback, it is capped at no more than 4 feet in height.

That specific cap does not apply by its terms to a retaining wall placed in an interior side or rear setback, or on a non-single-family lot, which fall back on Sec. 4(C)'s general encroachment allowance without a stated height limit. The general Code of Ordinances treats retaining walls favorably in a separate rule: under Sec. 16-8(d)(1), permanent structures, including buildings, bridge railings and retaining walls, are excluded from the citywide sight-triangle rule that otherwise bars fences, signs, shrubbery and similar obstructions between 30 and 96 inches tall within an intersection's visibility triangle.

That exemption is not unconditional: Sec. 16-8(e) lets the city transportation director order supplemental measures if a structure still creates a potentially dangerous sight condition at an intersection, so a tall retaining wall near a corner can still draw a city review even though it clears the height-based obstruction test.