Retail business and service establishments except eating and drinking establishments: one space for each three hundred (300) square feet of gross floor area of buildings or groups of buildings having a gross floor area of zero to five thousand (5,000) square feet, excluding basement storage area.
One space for each two hundred (200) square feet of gross floor area of buildings or groups of buildings having a gross floor area greater than five thousand (5,000) square feet, excluding basement storage.
Four spaces for each one thousand (1,000) square feet of gross floor area of buildings or groups of buildings located within a State Enterprise Zone having a gross floor area greater than one hundred ninety thousand (190,000) square feet, excluding basement storage.