In addition to design review as stated in SMC 14.225.060, the DRB shall review and make recommendations on proposed:
A. Mobile vendor structures and trailers which will do business in the Historic District for more than thirty days, prior to the issuance of a business license;
B. Special tax valuations; and
C. Requests for additions to the list of officially designated historic structures, the decision on which shall be made by the City Council.