For use in this chapter, the following terms are defined:
1. “Commission” means the Adel Historic Preservation Commission, as established by this chapter.
2. “Historic district” means an area which contains a significant portion of buildings, structures or other improvements which, considered as a whole, possess integrity of location, design, setting, materials, workmanship, feeling and association, and which area as a whole:
A. Embodies the distinctive characteristics of a type, period or method of construction, or represents the work of a master, or possesses high artistic values, or represents a significant and distinguishable entity whose components may lack individual distinction; or
B. Is associated with events that have made significant contributions to the broad patterns of our local, state or national history; or
C. Possesses a coherent and distinctive visual character or integrity based upon similarity of scale, design, color, setting, workmanship, materials or combinations thereof which is deemed to add significantly to the value and attractiveness of properties within such area; or
D. Is associated with the lives of persons significant in our past; or
E. Has yielded, or may be likely to yield, information important in prehistory or history.
3. “Historic site” means a structure or building which:
A. Is associated with events that have made a significant contribution to the broad patterns of our history; or
B. Is associated with the lives of persons significant in our past; or
C. Embodies the distinctive characteristics of a type, period or method of construction or represents the work of a master, or possesses high artistic values, or represents a significant and distinguishable entity whose components may lack individual distinction; or
D. Has yielded, or may be likely to yield, information important in prehistory or history.