Every part of a required yard shall be open to the sky, unobstructed except for permitted accessory buildings in a rear yard, the ordinary architectural projections of skylights, sills, belt courses, cornices, chimneys, flues, and other ornamental features, and open or lattice-enclosed fire escapes, fireproof outside stairways and balconies opening upon fire towers as found in Section 17.44.090. (Ord. 2023-14 §1, amended, 2023; Ord. 111 §1, amended, 1985; Prior code §12-101-24)