Wherever the county zoning regulations made under authority of sections 64.845 to 64.880 require a greater width or size of yards, courts or other open spaces or require a lower height of buildings or a less number of stories, or require a greater percentage of lots to be left unoccupied, or require a lower density of population, or require a more restricted use of land, or impose other higher standards than are required in any other statute, local order or regulation, private deed restrictions or private covenants, the regulations made under authority of sections 64.845 to 64.880 shall govern.