In this subchapter, the term “development area” means the area to be developed, maintained, and used in accordance with this subchapter and the Pennsylvania Avenue Development Corporation Act of 1972 (Public Law 92–578, 86 Stat. 1266) and is the area bounded as follows:

Beginning at a point on the southwest corner of the intersection of Fifteenth Street and E Street Northwest;

thence proceeding east along the southern side of E Street to the southwest corner of the intersection of Thirteenth Street and Pennsylvania Avenue Northwest;

thence southeast along the southern side of Pennsylvania Avenue to a point being the southeast corner of the intersection of Pennsylvania Avenue and Third Street Northwest;

thence north along the eastern side of Third Street to the northeast corner of the intersection of C Street and Third Street Northwest;

thence west along the northern side of C Street to the northeast corner of the intersection of C Street and Sixth Street Northwest;

thence north along the eastern side of Sixth Street to the northeast corner of the intersection of E Street and Sixth Street Northwest;

thence west along the northern side of E Street to the northeast corner of the intersection of E Street and Seventh Street Northwest;

thence north along the eastern side of Seventh Street to the northeast corner of the intersection of Seventh Street and F Street Northwest;

thence west along the northern side of F Street to the northwest corner of the intersection of F Street and Ninth Street Northwest;

thence south along the western side of Ninth Street to the northwest corner of the intersection of Ninth Street and E Street Northwest;

thence west along the northern side of E Street to the northeast corner of the intersection of E Street and Thirteenth Street Northwest;

thence north along the eastern side of Thirteenth Street to the northeast corner of the intersection of F Street and Thirteenth Street Northwest;

thence west along the northern side of F Street to the northwest corner of the intersection of F Street and Fifteenth Street Northwest;

thence north along the western side of Fifteenth Street to the northwest corner of the intersection of Pennsylvania Avenue and Fifteenth Street Northwest;

thence west along the southern side of Pennsylvania Avenue to the southeast corner of the intersection of Pennsylvania Avenue and East Executive Avenue Northwest;

thence south along the eastern side of East Executive Avenue to the intersection of South Executive Place and E Street Northwest;

thence east along the southern side of E Street to the point of beginning.

This subchapter and the Pennsylvania Avenue Development Corporation Act of 1972 (Public Law 92–578, 86 Stat. 1266) do not preclude other agencies or instrumentalities of the Federal Government or of the District of Columbia from exercising any lawful powers in the development area consistent with the development plan described in section 5(a) of the Act (86 Stat. 1269) or the provisions and purposes of this subchapter and the Act. However, the agency or instrumentality shall not release, modify, or depart from any feature or detail of the development plan without the prior approval of the Administrator of General Services.

New construction (including substantial remodeling, conversion, rebuilding, enlargement, extension, or major structural improvement of existing building, but not including ordinary maintenance or remodeling or changes necessary to continue occupancy) shall not be authorized or conducted within the development area except on prior certification by the Administrator of General Services that the construction is, or may reasonably be expected to be, consistent with the carrying out of the development plan described in section 5(a) of the Pennsylvania Avenue Development Corporation Act of 1972 (Public Law 92–578, 86 Stat. 1269).