a. An owner of property designated as a landmark or located in an historic district may apply for a landmark alteration certificate, including all information which the Planning Commission determines is necessary to consider the application, including without limitation plans and specifications showing the proposed exterior appearance, with texture, materials and architectural design and detail, and the names and addresses of the abutting property owners.

b. Upon receipt of an application for an alteration certificate, the Planning Commission shall submit the application, together with a recommendation thereon, to the Board of Trustees for final approval.