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SEC. 6. FEATURES. The architectural features of the said Historic District that should be preserved are described and depicted in the Landmarks Preservation Advisory Board's case report with appendix titled "Blackstone Court Historic District," adopted June 4, 1986, which is hereby incorporated herein and made a part hereof as though fully set forth. (Added by Ord. 464-87, App. 11/19/87) SEC. 7. ADDITIONAL PROVISIONS FOR CERTIFICATES OF APPROPRIATENESS. The procedures, requirements, controls and standards in Sections 1005 through 1006.8 of Article 10 of the City Planning Code shall apply to all applications for Certificates of Appropriateness in the Blackstone Court Historic District. In addition, the following provisions shall apply to all such applications; in the event of any conflict or inconsistency between the following provisions and Article 10, those procedures, requirements, controls and standards affording stricter protection to the Historic District shall prevail. (A) Character of the Historic District. The standards for review of all applications for Certificates of Appropriateness are as set forth in Section 1006.7 of Article 10. For purposes of review pursuant to said standards, the character of said Historic District shall mean the architectural features and historic street and lot lines, freestanding buildings, and low scale and intensity of development of the Blackstone Court Historic District. (B) Alterations to Contributory and Contributory/Altered Buildings. Alterations to Contributory and Contributory/Altered buildings shall be compatible with the architectural and historic fabric of the building. New construction shall be compatible with the character of the historic district defined in Section 7(A) above, including but not limited to materials, fenestration, scale, bulk, detailing and intensity of development. Alterations or new construction shall maintain and enhance existing visual access to the historic buildings in the district. (C) Landscaping. All applications for Certificates of Appropriateness for construction shall include landscaping plans for required yards, setbacks and areas counting toward usable open space requirements of Section 135 of the City Planning Code. All construction activities, such as but not limited to demolition, storage of construction materials, excavation, and application of concrete and other chemicals shall be conducted so as to minimize interference with gardens. (D) Street Furniture. Street furniture including but not limited to lighting fixtures, trash receptacles, and benches shall require a Certificate of Appropriateness. Such features shall complement the scale and character of the district. (E) Demolition. Demolition of Contributory and Contributory/Altered buildings shall be subject to the maximum controls allowed under Article 10 of the City Planning Code. A demolition permit shall not be issued until all other required permits for new construction have been approved, except in situations considered unsafe or dangerous pursuant to Section 1007 of Article 10 of the City Planning Code. No applications for a demolition permit shall be deemed complete until all building permits for the replacement structure have been approved. (F) Significance of Individual Buildings to the Historic District. The history of each parcel within the historic district is documented on the survey worksheets (Appendix A to the Blackstone Court Historic District Case Report). Each building is assigned a finding from the three following categories: (1) Contributory. This category identifies buildings which date from the historic district's period of significance and retain their historic integrity. These structures are of the highest importance in maintaining the character of the historic district. The maximum suspension period allowable under Article 10 shall be imposed on applications for demolition of Contributory buildings. (2) Contributory/Altered. This category identifies buildings which date from the historic district's period of significance but have had their historic integrity compromised by inappropriate alterations.