“Building area” means the aggregate of the maximum horizontal cross-sectional area of the main building on a lot, excluding cornices, eaves, gutters, or chimneys projecting not more than two feet, steps, one-story open porches, bay windows not extending through more than one-story and not projecting more than two feet, balconies and terraces. (Ord. 2020 § 2, 1994; Ord. 190 Art. IV § 402, 1964)