Table 5.1b – Energy Audit By Construction Year


 Number of households by year of construction
Before 1946 1946-1960 1961-1977 1978-1983 1984-1995 1996-2000 2001-2010 2011 or later Not stated
An energy audit had been conducted in the dwelling
Yes 279,330 A 243,869 A 567,940 A 242,635 A 370,805 A 94,754 M 135,101 M 101,386 M - U
No 850,910 A 950,816 A 1,771,515 A 918,085 A 1,380,647 A 566,302 A 1,322,730 A 765,926 A 188,369 M
Don’t know 364,809 M 562,828 A 1,097,413 A 395,852 A 557,941 A 217,668 M 467,425 A 334,662 A 186,583 M
Not stated - - - - - - - - - - - - - - - U - -
An energy audit had been conducted in the last 10 years
Yes 195,520 A 180,974 A 403,952 A 190,603 A 273,860 A 87,025 M 120,753 M 90,070 M - U
No 76,574 M 57,923 M 127,737 M 50,299 M 77,188 M - U - U - U - U
Valid skip Footnote 1 1,215,719 A 1,513,644 A 2,868,928 A 1,313,937 A 1,938,587 A 783,970 A 1,790,155 A 1,101,331 A 374,952 A
Don’t know - U - U - U - U - U - U - U - U - U
Changes made as a result of the audit
Yes 237,016 A 178,350 A 447,221 A 181,317 A 286,146 A 66,862 M 54,152 M - U - U
No 37,169 M 53,852 M 97,469 M 53,838 M 76,305 M - U 80,948 M 75,160 M - U
Valid skip Footnote 1 1,215,719 A 1,513,644 A 2,868,928 A 1,313,937 A 1,938,587 A 783,970 A 1,790,155 A 1,101,331 A 374,952 A
Don’t know - U - U - U - U - U - U - - - U - U
Not stated - - -   - U - - - - - - - - - - - -
A government grant received as part of a home energy retrofit program
Yes 159,818 M 138,296 M 255,620 A 105,188 A 168,490 A 46,794 M - U - U - U
No 101,344 A 78,477 M 210,762 A 110,716 M 163,976 A - U 62,488 M 73,061 M - U
Valid skip Footnote 1 1,215,719 A 1,513,644 A 2,868,928 A 1,313,937 A 1,938,587 A 783,970 A 1,790,155 A 1,101,331 A 374,952 A
Don’t know - U - U 93,472 M - U - U - U - U - U - U
Not stated - - - - - U - - - - - - - - - - - -

Legend:

The letter beside each estimate classifies its quality as follows: A–Acceptable, M–Use with caution, U–Too unreliable to be published.

Notes:

Due to rounding, the numbers may not add up and may differ slightly among tables.

Source:

2019 Survey of Household Energy Use