A. R zone: four square feet per lot;

B. R-15 and R-1 zones: two square feet per lot;

C. R-2, R-3, and R-3C zones: four square feet per lot;

D. C-1 zone: one square foot per four linear feet of building wall facing a street, parking lot or court open to the public, or forty-eight square feet per business establishment, whichever is less. (Ord. 89-1 § 1, 1989.)