Historic resources included in an overlay district may include districts, individual structures or groups of structures, land or land and structures in combination, provided that the resource has architectural or historical significance to the community.
A. Classification of historic districts.
(1) National Register historic district. An area listed as a historic district in the National Register of Historic Places.
(2) Certified historic district. An area designated as a historic district by local ordinance, which has been certified as significant by the Pennsylvania Historical and Museum Commission according to the provisions of the Historic District Act (Act 167 of 1961).
(3) Local historic district. An area designated as a historic district by the Borough Council, which has local historical or architectural significance but lacks federal or state recognition.
B. Classification of structures within historic districts. Within any historic overlay district, all principal structures shall be classified based on their contribution to the overall character and integrity of the district in the following categories:
(1) Significant. Structures that are outstanding examples of the architecture of the district or of major importance in the history of the district.
(2) Contributing. Structures that may lack individual significance, but which contribute to the overall historic or architectural character of the district.
(3) Noncontributing or intrusion. Structures that do not contribute to the overall historic or architectural character of the district.
C. Classification of historic resources not in historic districts. Individual structures, groups of structures, land, or land and structures in combination may be designated by the borough councils by ordinance as historic resources in the overlay district and shall be subject to the provisions of this article. In designating properties not listed in historic districts for inclusion in a historic overlay district, the following kinds of properties shall be eligible:
(1) Properties listed on the National Register of Historic Places or evaluated by the National Park Service or the Pennsylvania History and Museum Commission as eligible for listing on the National Register.
(2) Properties identified as having outstanding historic or architectural significance in a state historic resource survey or other competent inventory and with the recommendation of the HARB.
D. Procedure for designation.
(1) The Historical Architectural Review Board shall have the responsibility of recommending to the Borough Council the adoption of ordinances designating sites or areas as historic overlay districts.
(2) Prior to the designation of any historic overlay district, the Historical Architectural Review Board shall submit to the Borough Council a report and recommendation on the historical and architectural significance of the site or area to be designated. Such report shall also attempt to provide an indication of the economic status of the property or properties under consideration for designation, including assessed value, recent real estate transactions or other appropriate data. The report shall also recommend the boundaries of any proposed historic district and recommend standards and guidelines for the approval of certificates of appropriateness in the proposed district.
(3) The recommendation of the Historical Architectural Review Board shall not become final until it is approved and adopted by the Borough Council in accordance with the requirements for zoning amendments under Article
XII of this chapter.