Yes. All buildings within a district are subject to Certificate of Appropriateness review but not to the same extent. At the time of approval, the structures within a local district will be identified as either contributing (historic) or non-contributing (non-historic). Generally, a building must be at least 50 years old and retain its historic features and feel to be considered as a contributing resource. The review of proposed significant exterior changes or demolition of a non-contributing structure will be focused on the potential impact to the neighborhood rather than on the individual building.