The home occupation shall be conducted only within the principal building;

No more than one (1) additional person other than the residents residing on the premises shall be employed or engaged in said home occupation at the premises;

There shall be no alteration or change to the outside appearance, character, or use of the building or premises, or other visible evidence of the conduct of such home occupation, other than one (1) sign not exceeding one (1) square foot in area, nonilluminated, mounted flat against the wall of the principal building;

No home occupation shall occupy more space than twenty percent (20%) of the total floor area of a residence, exclusive of any open porch, attached garage, or similar space not suited for or intended to be occupied as living quarters, provided, however, that in no event shall such home occupation occupy more than five hundred (500) square feet;

No equipment or process shall be used in such home occupation which creates noise, vibrations, glare, fumes, odors, or electrical interference detectable to the normal senses outside the dwelling unit, nor shall there be any combustible materials located anywhere on the premises which are in violation of the city’s fire prevention regulations. In case of electrical interference, no equipment or process shall be used which creates visual or audible interference in any radio or television receivers off the premises;

No articles or materials used in connection with such home occupation shall be stored on the premises other than in the principal building so used;

No more than one (1) automobile or truck, whose size shall not be larger than a stock one (1) ton panel or pickup truck, used in conjunction with such home occupation shall be permitted to park on the premises in question or off the premises in question and within view from surrounding properties.