Roanoke County, VA Building Setbacks & Zoning: Structure Height Limits (2026)

Roanoke County's zoning ordinance sets maximum building heights district by district inside each zone's Site Development Regulations, Sec. 30-41-3. Subsection (C) governs the R-1 Low Density Residential District: principal structures, meaning the primary dwelling, may rise no higher than 45 feet. Accessory structures such as detached garages, workshops and sheds are held to 15 feet, but the ordinance allows a taller accessory building up to 25 feet if it complies with the setback requirements that apply to principal structures under § 30-41-3(B), meaning it must be pulled back the full 30-foot front, 10-foot side and 25-foot rear distances rather than the shorter accessory setbacks.

That trade-off, extra height in exchange for full principal-structure setbacks, is the only route to a taller garage or barn in the district. The 45-foot principal-structure figure in R-1 is one of several district-specific numbers: the county's other residential districts, R-2 through R-4, the Planned Residential Development district, and the agricultural AG-3, AG-1 and AR districts, each set their own maximum in their own numbered (C) subsection, so height limits shift depending on the parcel's actual zoning classification. The Zoning Administrator, part of Roanoke County Community Development, confirms height compliance at zoning permit review under Sec.

30-9 before a building permit issues. Property owners proposing a structure that would exceed the applicable height, a tall accessory barn, for example, need either a design that fits the standard or a variance from the Board of Zoning Appeals under Sec. 30-24; the ordinance itself does not grant an administrative exception beyond the accessory-structure setback trade-off in § 30-41-3(C)(1)(b).