2502.1 Except for the projections and encroachments specified in this section and the exceptions in § 2503, every part of a required yard or court or other required open space shall be open and unobstructed to the sky.2502.2 Cornices and eaves may project over any required yard or court for a distance not to exceed two feet (2 ft.).2502.3 Sills, leaders, belt courses, and similar ornamental or structural features may project over any required yard or court a distance not to exceed six inches (6 in.).2502.4 The ordinary projection of skylights above the bottom of a yard or court shall be permitted if placed so as not to obstruct light and ventilation.2502.5 Awnings serving a window, porch, or door may project into a required yard or open court for a distance not to exceed forty inches (40 in.).2502.6 An open or lattice-enclosed fire balcony or fire escape may project into a required yard or an open court for a distance not to exceed four feet (4 ft.).2502.7 A chimney, smokestack, or flue may project into any required rear yard, provided the horizontal section of the projection does not exceed five square feet (5 ft.²).2502.8 A chimney, smokestack, or flue may project into any required side yard for a distance not to exceed two feet (2 ft.).2502.9 A self-contained room air conditioner may project into any required yard or court a distance not to exceed two feet (2 ft.).

SOURCE: §§ 7503 et seq., of the Zoning Regulations, effective May 12, 1958 (renumbered §§ 7602.1 et seq. in the April 1981 edition of the Zoning Regulations); as amended by Final Rulemaking published at 47 DCR 9741-43 (December 8, 2000), incorporating by reference the text of Proposed Rulemaking published at 47 DCR 8335, 8526 (October 20, 2000).