(1) In any Pending Public Acquisition District, no permit shall be issued for any of the following uses or improvements:

(a) Construction of any buildings or structures on vacant land other than to cure a violation issued by the Department of Licenses and Inspections;

(b) Creation of any additional residential units within an existing building;

(c) The establishment of any new or additional use permitted by the underlying zoning designation of the property;

(d) The expansion within an existing building of any existing use, or the extension of any existing building or structures on the property;

(e) Any improvement, other than to cure a violation for which notice has been issued by the Department of Licenses and Inspections.

(f) Nothing in this section shall prevent the issuance of a permit for work to be conducted in order to insure the general maintenance and proper upkeep of any building or structure regardless of whether a violation notice has been issued by the Department of Licenses and Inspections.