No earth home shall be constructed on a site within four hundred fifty feet (450') of property, or adjoining property, on which an existing nonearth home single- or multi-family residence exists or for which a building permit has been applied for or issued for such nonearth home single- or multi-family residence without the permission of each owner of said property. "Adjoining" includes land directly across a public way. The owner or owners of said property shall be determined as they appear on the tax records of this County. (1983 Code)