Permitted principal uses in R-2 One and Two-Family Residence Districts, hereinafter referred to as "R-2 Districts" are as follows:
(a) One-family detached dwellings;
(b) Essential services, as defined in Section 1915.20 and municipal administrative or public service buildings or properties including libraries, except such uses as storage yards, warehouses, garages or other uses customarily conducted as gainful business, provided any building is located not less than twenty feet (20 ft.) from any other lot in any residential district;
(c) Public parks and playgrounds.
(Ord. 7139-99. Passed 7-6-99; Ord. 7435-01. Passed 2-18-02.)