Consider a day-care center for 10 clients where such center occupies less than 100 m2 in a 10,000 m2 office building.
The day-care center is a nonresidential use.
The occupancy threshold for a day-care occupancy classification is four or more clients.
The day-care center occupies less than 1% of the building area, but it cannot be considered incidental to the business use