Table 1.7 – Building characteristics and energy use by year of construction
Year of construction Buildings Floor space Energy use Energy intensity
(number) Q.I. (millions of m2) Q.I. (PJ) Q.I. (GJ/m2) Q.I.
Before 1920 46 951 A 54.0 A 50.5 A 0.93 A
1920 to 1959 83 521 A 91.1 A 98.9 A 1.09 A
1960 to 1969 67 758 A 126.1 A 120.6 A 0.96 A
1970 to 1979 75 107 A 158.6 A 183.1 A 1.15 A
1980 to 1989 91 404 A 116.2 A 131.9 A 1.14 A
1990 to 1999 58 106 A 105.3 A 120.1 A 1.14 A
2000 or later 59 418 A 114.6 A 137.1 A 1.20 A
2000 to 2004 29 316 A 55.3 A 74.0 B 1.34 A
2005 or later 30 102 A 59.4 B 63.1 A 1.06 A
Canada 482 266 A 765.9 A 842.2 A 1.10 A

Note:

Due to rounding, numbers may not add up to the total shown, and some numbers may differ from one table to the next.

Legend:

Quality indicators (Q.I.) classify each estimate according to its quality as follows: A–Excellent, B–Good, C–Acceptable, D–Use with caution, F–Too unreliable to be published and X–suppressed due to confidentiality.