District of Columbia Code Division I. Government of District. § 10-1121.11. Federal and District governments authorized to construct airspace structures.

(1) The government proposing to construct any structure in airspace shall have fee simple title to real property abutting such real property;

(2) The airspace to be occupied by such structure shall be only within the frontages of the real property abutting such airspace which are directly opposite;

(3) The airspace to be occupied by such structure shall not be used to deprive any real property, not owned by the federal government or District government, of its easements of light, air, or access;

(4) The construction of any such structure by the District government across a street or alley, the title to which is in the United States, shall be in accordance with an agreement between the Mayor and the Attorney General of the United States, subject to such terms and conditions as the Attorney General and the Mayor agree to include in the agreement;

(5) Section 6-641.15 shall apply to the construction of any structure in such airspace by the federal government and, to the extent required by subsection (c) of § 2-1004, to the construction of any structure in such airspace by the District government;

(6) Plans for the construction of any structure in such airspace by the federal government or the District government shall be subject to review by the National Capital Planning Commission in accordance with § 2-1004;

(7) The construction of any such structure by the federal government or the District government shall be subject to the recommendations of the Commission of Fine Arts to the extent required by §§ 6-611.01 and 6-611.02 or §§ 6-1201 to 6-1205.