It is not the intent or purpose of this chapter to require the alteration or change of any use of property existing as of the passage date hereof; and it is expressly provided that any small business, commercial or professional venture, endeavor or project which does not: a) require, have or use employees, b) require a building other than a residence occupied as a bona fide home, or a major conversion or alteration (50 percent or more) thereof; c) cause or create electrical or other interference which affects radio or television reception in the general area; d) create or cause unusual noise or odors; may be maintained and carried on (solely by the individual proprietor) in zone IV; provided that such property is at all times maintained to the same standard of neatness and beauty as other residential property in the general area. (Ord. 1370, 2-20-2007)