Period of significance

Period of significance refers to that period of time in which the a cultural property achieved significance. Significant dates are those that correspond to events or eras within the history of the property. The period may be as brief as one year, as in the case of an architecturally-significant property built in a given year. A property can also have achieved significance during several distinct periods of time, as in the case of an archaeological site. In an historic district or complex of buildings and features, the period of significance is the date of the oldest building within the boundaries of the designated area.