Classification of period of construction

Status: This was the recommended standard from September 11, 2013 to March 23, 2016.

Classification structure

Classification of period of construction - Classification structure
Code Category
1 1920 or before
2 1921 to 1945
3 1946 to 1960
4 1961 to 1970
5 1971 to 1980
6 1981 to 1990
7 1991 to 1995
8 1996 to 2000
9 2001 to 2005
10 2006 to 2011
Date modified: