The board of historic preservation shall, upon an investigation as it deems necessary, make a determination as to whether a nominated historic property, structure or area meets one or more of the following criteria:
   (a)   It is associated with events that have made a significant contribution to the broad patterns of city history;
   (b)   Its identification with a person who significantly contributed to the development of the community, county, state or country;
   (c)   Its embodiment of distinctive characteristics of a type, period or method of construction;
   (d)   It represents the work of a master or possesses high artistic values;
   (e)   It represents a significant and distinguishable entity whose components may lack individual distinction; or
   (f)   It has yielded or may be likely to yield information important in prehistory or history.
(1992 Code, § 19.5-22) (Ord. 14-86, passed 2-10-1986)