Apply for Certificate of Appropriateness Learn how to apply for a Certificate of Appropriateness, which may be required if you are planning work on your historic property. This certificate authorizes a change in appearance of a building, structure, site, landscape, or object that is designated as a Protected Site or is located within a Preservation District.
Nominate a Property for Local Designation Instructions for nominating a property or group of properties for Protected Site or Preservation District designation.