District of Columbia Code Division I. Government of District. § 6-404. Permits for extensions of buildings beyond building line.

The action of the Council of the District of Columbia in granting permits before March 3, 1891, for the extension of any building or buildings, or any part or parts thereof, in the District of Columbia, beyond the building line, and upon the streets and avenues of said District, is hereby ratified, without prejudice, however, to the legal rights of the government in the event of the destruction by fire, or otherwise, of any such structure. And after June 21, 1906, no such permits shall be granted except upon special application and with the concurrence of the Mayor of the District of Columbia, and where such extensions are to be placed upon buildings to be erected on land adjoining United States public reservations, the approval of the Director of the National Park Service.