There shall be a business certificate for each place of business or location. For the purposes of this chapter, a "place of business" means a building or series of connected buildings on one lot or parcel of ground, operated or owned by the same person and conducting the same general business activity.
   Where two or more separate businesses, separately owned or operated, share floor space in the same building or on the same parcel of ground, each shall be deemed a separate business and shall be required to obtain a separate business certificate based on the floor area each separately uses.