(d) The maximum number of parking spaces permitted by PADC for a development may not exceed the aggregate of the number of spaces allowed for each use within the development. The schedule of limitations for parking spaces is as follows:

1. (1) Hotel: One parking space for each four sleeping rooms or suites;
2. (2) Places of public assemblage other than hotels: (i.e., arena, armory, theater, auditorium, community center, convention center, concert hall, etc.) one parking space for each ten seats of occupancy capacity for the first 10,000 seats plus one for each 20 seats above 10,000: Provided, that where seats are not fixed, each seven square feet of gross floor area usable for seating shall be considered one seat;
3. (3) Retail, trade, and service establishments: one parking space for each 750 square feet of gross floor area;
4. (4) Residential: One parking space for each 1.2 units;
5. (5) Offices: One parking space for each 1,800 square feet of gross floor area.