District of Columbia Code Division I. Government of District. § 10-1121.03. Terms and conditions to be included in leases.

(1) That such airspace shall not be used to deprive any real property not owned by the lessee of easements of light, air, and access;

(2) For a clearance of at least 15 feet between the recorded grade of a street or alley and the lowest portion of any structure (other than supporting columns) constructed over such street or alley;

(3) That upon the expiration or termination of the lease of airspace the Mayor may require (at the expense of the lessee or his successor in interest) the removal of any structure constructed or erected in such airspace and the restoration of such airspace to its condition prior to the construction or erection of such structure;

(4) That all the rights, duties, terms, conditions, agreements, and covenants set forth and contained in such lease shall run with the abutting real property owned by the lessee and shall apply to the lessee, his heirs, legal representatives, successors, and assignees;

(5) That the lessee shall, at his expense, record a copy of the lease in the Office of the Recorder of Deeds of the District of Columbia;

(6) For the payment of such rents and fees, and the posting of such bond or such other security, by the lessee, as the Mayor determines to be necessary or desirable; and

(7) For such other terms and conditions as the Mayor determines to be necessary or desirable.