The Commission shall, upon investigation as it deems necessary, make a preliminary determination as to whether a property, structure, or area possesses the integrity of design, workmanship, materials, location, setting and feeling and meets one or more of the following criteria:
(A) Significant value as part of the historic, heritage or cultural characteristics of Lockport, Will County, Illinois, or the U.S.A.;
(B) Identification with a person or persons who significantly contributed to the development of Lockport, Will County, Illinois, or the U.S.A.,
(C) Representative of the distinguishing characteristics of architecture inherently valuable for the study of a period, type, method of construction, or use of indigenous materials, particularly locally quarried limestone;
(D) Notable work of a master builder, designer, architect or artist whose individual work has influenced the development of Lockport, Will County, Illinois, or the U.S.A.;
(E) Its unique location or singular physical characteristics that make it an established or familiar visual feature;
(F) Its character as a particularly fine or unique example of a utilitarian structure, including but not limited to farmhouses, gas stations, or granaries, with a high level of integrity or architectural significance;
(G) Area that has yielded or may be likely to yield, information important in history or prehistory;
(H) District that contains one or more Landmarks along with such other buildings, places, or areas within definable geographic boundaries which, while not of such significance to be designated as Landmarks, nevertheless contribute to the overall visual characteristics of the Landmark(s) located in the district;
(I) District that establishes a sense of time and place unique to the city;
(`79 Code § 150.191) (Ord. 94-378, passed 12-5-94)