4.4 - GARAGE
  Number of households by year of construction
1950 – 1969 1970 – 1979 1980 – 1989
Dwelling has a garage
Yes - attached 572,280 A 685,657 A 875,697 A
Yes - non-attached 523,964 A 270,235 A 221,831 M
Yes - not stated U U U
No 684,469 A 748,178 A 414,189 A
Don't know
Not stated 54,781 M 104,689 M U
Amount of insulation in the garage
Full insulation - all walls and garage doors are insulated 160,350 M 210,255 A 230,390 A
Full insulation - all walls but not the garage doors are insulated 153,753 M 143,381 A 175,471 A
Partial insulation - some walls are insulated 258,917 M 316,151 M 272,780 A
No 465,439 A 223,280 A 299,278 A
Don't know 52,536 M 54,618 M 118,171 M
Not stated 64,537 M 117,173 M U
Garage is heated
Yes 164,640 M 170,549 M 128,307 A
No 931,106 A 781,536 A 969,709 A
Don't know U U
Not stated 58,875 M 112,772 M U
Type of garage
One-car garage 639,846 A 398,988 A 494,513 A
Two-car garage 428,462 A 533,864 A 557,039 A
Three-or-more-car garage U U U
Don't know U U U
Not stated 55,954 M 109,297 M U

Note:

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

Legend:

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

Source:

2011 Survey of Household Energy Use