Within any residential district, no building with an existing nonconforming home professional office or home occupation shall be constructed or altered so as to be inharmonious to the residential character of adjacent structures.

The types of construction not considered to be residential in character include, but are not limited to, store front type of construction, garage doors (larger than needed for passenger vehicles or light commercial vehicles), unfinished concrete blocks or cinder block wall surfaces, metal panels, elimination of porches and wall surfaces without doors and/or windows.