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Crowding Index
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The crowding index has been calculated using the Canadian National Occupancy Standard (CNOS), which compares the number of people in a household with the number of bedrooms it has, using a set of criteria. This standard has also been used in Australia and other nations, as well as by various other organisations in New Zealand, and is regarded as the most useful for international comparisons.
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Crowded households include those needing one or more additional bedrooms, while non-crowded households include those needing no additional bedrooms and households with spare bedrooms.
Of 1,494,500 households in 2004, 4.9 percent were crowded and 95.1 percent were non-crowded, compared with 5.7 percent and 94.3 percent, respectively, in 1994.
Although there was a decrease in crowded households over this period, the level of crowded households needing two or more bedrooms remained relatively unchanged. In 2004, 1.0 percent of households needed two or more bedrooms, compared with 0.8 percent of households in 1994.
Households with two or more bedrooms spare have increased from 32.0 percent to 37.4 percent of all households from 1994 to 2004.
In 1994, median equivalised household disposable income for those in crowded households needing two or more additional bedrooms was 80.1 percent of the median income for all households. By 2004, this had declined to 75.2 percent.
After adjusting for inflation, households needing one more bedroom recorded the largest increase in both median equivalised disposable income (30.2 percent) and median equivalised residual income (45.6 percent) between 1994 and 2004, compared with other crowded and non-crowded households.
Of all households that rented their homes from private individuals in 2004, 7.2 percent were crowded. Only 4.7 percent of households that owned their own home with a mortgage were crowded.
In 2004, 97.3 percent of European households were living in non-crowded housing, compared with 89.8 percent of Māori households and 83.8 percent of Other ethnic group households. In comparison to 1994, these figures were relatively unchanged (96.1, 87.8 and 80.9 percent, respectively).
Link to Excel tables:
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