CFR > Title 41 - Public Contracts and Property Management > SUBTITLE C—Federal Property Management Regulations System > CHAPTER 102—FEDERAL MANAGEMENT REGULATION (parts 102 to 102-197) > SUBCHAPTER C—REAL PROPERTY (parts 102-71 to 102-86) > PART 102-78—HISTORIC PRESERVATION > SUBPART B—Historic Preservation (§102-78.15 to §102-78.70) > 102-78.15—What are historic properties?