(1) Each historic resource designated as a landmark, and historic resources designated as contributing properties within a historic district, shall be properly maintained in weather-resistant, secure condition and faithful to its historic appearance and character.

(2) Nothing in this article shall be construed to prevent normal maintenance and repair of any exterior feature of any historic resource designated as a landmark or contributing property within a historic district, which does not involve change in design, material, color, or exterior appearance. The Commission shall not consider the interior arrangements or alterations to the interior of a building, unless designation specifically includes the interior or a portion thereof.

(3) All exterior maintenance and repair not deemed to be routine maintenance and repair as defined herein, requires an application for determination of a Certificate of Appropriateness or Certificate of No Effect. Repairs that involve change in exterior appearance may be determined by the Director and Chairperson to have no significant impact on historic appearance and character, and thereby qualify for a Certificate of No Effect.