36 C.F.R. § 67.2
As used in these regulations:
Certified Historic Structure means a building (and its structural components) which is of a character subject to the allowance for depreciation provided in section 167 of the Internal Revenue Code of 1986 which is either:
Portions of larger buildings, such as single condominium apartment units, are no independently considered certified historic structures. Rowhouses, even with abutting or party walls, are considered as separate buildings. For purposes of the certification decisions set forth in this part, a certified historic structure encompasses the historic building and its site, landscape features, and environment, generally referred to herein as a "property" as defined below. The NPS decision on listing a property in the National Register of Historic Places, including boundary determinations, does not limit the scope of review of the rehabilitation project for tax certification purposes. Such review will include the entire historic property as it existed prior to rehabilitation and any related new construction. For purposes of the charitable contribution provisions only, a certified historic structure need not be depreciable to qualify; may be a structure other than a building; and may also be a remnant of a building such as a facade, if that is all that remains. For purposes of the other rehabilitation tax credits under section 47 of the Internal Revenue Code, any property located in a registered historic district is considered a certified historic structure so that other rehabilitation tax credits are not available; exemption from this provision can generally occur only if the Secretary has determined, prior to the rehabilitation of the property, that it is not of historic significance to the district.
Certified Rehabilitation means any rehabilitation of a certified historic structure which the Secretary has certified to the Secretary of the Treasury as being consistent with the historic character of the certified historic structure and, where applicable, with the district in which such structure is located.
Duly Authorized Representative means a State or locality's Chief Elected Official or his or her representative who is authorized to apply for certification of State/local statutes and historic districts.
Historic District means a geographically definable area, urban or rural, that possesses a significant concentration, linkage or continuity of sites, buildings, structures or objects united historically or aesthetically by plan or physical development. A district may also comprise individual elements separated geographically during the period of significance but linked by association or function.
Inspection means a visit by an authorized representative of the Secretary or a SHPO to a certified historic structure for the purposes of reviewing and evaluating the significance of the structure and the ongoing or completed rehabilitation work.
National Register of Historic Places means the National Register of districts, sites, buildings, structures, and objects significant in American history, architecture, archeology, engineering, and culture that the Secretary is authorized to expand and maintain pursuant to section 101(a)(1) of the National Historic Preservation Act of 1966, as amended. The procedures of the National Register appear in 36 CFR part 60 et seq.
Owner means a person, partnership, corporation, or public agency holding a fee-simple interest in a property or any other person or entity recognized by the Internal Revenue Code for purposes of the applicable tax benefits.
Property means a building and its site and landscape features.
Registered Historic District means any district listed in the National Register or any district which is:
Rehabilitation means the process of returning a building or buildings to a state of utility, through repair or alteration, which makes possible an efficient use while preserving those portions and features of the building and its site and environment which are significant to its historic, architectural, and cultural values as determined by the Secretary.
Standards for Rehabilitation means the Secretary's Standards for Rehabilitation set forth in section 67.7 hereof.
State Historic Preservation Officer means the official within each State designated by the Governor or a State statute to act as liaison for purposes of administering historic preservation programs within that State.
State or Local Statute means a law of a State or local government designating, or providing a method for the designation of, a historic district or districts.
36 C.F.R. §67.2