Va. Code § 15.2-2315
Whenever the regulations made under authority of this article require a greater width or size of yards, courts or other open spaces, require a lower height of building or less number of stories, require a greater percentage of lot to be left unoccupied or impose other higher standards than are required in any other statute or local ordinance or regulation, the provisions of the regulations made under authority of this article shall govern. Whenever the provisions of any other statute or local ordinance or regulation require a greater width or size of yards, courts or other open spaces, require a lower height of building or a less number of stories, require a greater percentage of lot to be left unoccupied or impose other higher standards than are required by the regulations made under authority of this article, the provisions of such statute or local ordinance or regulation shall govern.
Va. Code § 15.2-2315