(a) A one-floor dwelling shall contain not less than 720 square feet of usable ground floor area, except for lots of record, prior to the adoption of this Zoning Code, having less than 7,500 square feet lot area the usable ground floor area shall contain not less than ten percent (10%) of the existing lot area, exclusive of open porches, garages or steps.
(b) A story and a half or two-story dwelling, shall contain not less than 650 square feet of ground floor area, exclusive of open porches, garages or steps. (Ord. 1069-94. Passed 4-28-94.)