A site, structure, building, district, or monument may be designated for preservation as a landmark or historic district and thus may be included within the Historic Preservation District or Historical Landmark District if such possesses the following attributes within the categories below, to-wit:

1. (1) Historical, cultural category.

   1. (A) Such has significant character, interest, or value as part of the development, heritage or cultural characteristics of the locality, state or nation; or is associated with the life of a personality significant to the past; or
   2. (B) Such is the site of a historic event with a significant effect upon the development, heritage, or cultural characteristics of the locality, state or nation; or
   3. (C) Such exemplifies the cultural, political, economic, social, or historic heritage of the community.

2. (2) Architectural, engineering category.

   1. (A) Such portrays the environment in an era of history characterized by a distinctive architectural style; or
   2. (B) Such embodies those distinguishing characteristics of an architectural type of engineering specimen; or
   3. (C) Such is the work of a designer or architect or contractor whose individual work has influenced the development of the community or of this nation; or
   4. (D) Such contains elements of design, detail, materials, or craftsmanship which represents a style technique to the past; or
   5. (E) Such is a part of or related to a square, park or other distinctive area and thus should be developed and preserved according to a plan based on a historical, cultural, or architectural motif; or
   6. (F) Such represents an established and familiar visual feature of the neighborhood, community, or skyline owning to its unique location or singular physical characteristics.

3. (3) Archaeological category.

   1. (A) Such has yielded, based upon physical evidence, or is likely to yield information important to history or prehistory; or
   2. (B) Such is a part of or related to a distinctive geographical area which should be developed or preserved according to a plan based on cultural, historic, or architectural motif.

Added at 26 Ok Reg 2819, eff 6-22-09 (emergency)

Added at 27 Ok Reg 912, eff 5-13-10