Housing loan quartiles
In Willoughby, the 'highest group' was the largest quartile, comprising of 55% of households with mortgages in 2011.
Mortgage repayments in Willoughby are directly related to house prices, length of occupancy and the level of equity of home owners. When viewed with Household Income data it may also indicate the level of housing stress in the community.
The quartile method is the most objective method of comparing change in the mortgage payment profile of a community over time.
A detailed explanation of how Housing Loan Repayment quartiles are calculated and interpreted is available in specific data notes.
Derived from the Census questions:
'How much does your household pay for this dwelling?' and 'Is this dwelling [owned outright, owned with a mortgage etc.]'
Households with a mortgage
|Housing loan quartiles|
|Loan repayment quartile group||Number||%||Willoughby City %||Number||%||Willoughby City %||2006 to 2011|
|Total households with a mortgage||744||100.0||100.0||690||100.0||100.0||+53|
|Housing loan - quartile group dollar ranges|
|Calculated from loan repayment data for New South Wales||Monthly housing loan repayments by Census year|
|Housing loan repayment ranges||2011||2006||2001||1996|
|Lowest group||$0 to $1,266||$0 to $993||$0 to $723||$0 to $605|
|Medium lowest||$1,267 to $1,995||$994 to $1,557||$724 to $1,069||$606 to $905|
|Medium highest||$1,996 to $2,853||$1,558 to $2,416||$1,070 to $1,550||$906 to $1,268|
|Highest group||$2,854 and over||$2,417 and over||$1,551 and over||$1,269 and over|
Housing loan repayment quartiles allow us to compare relative repayment liabilities across time. Analysis of the distribution of households by housing loan repayment quartiles in Willoughby compared to Willoughby City shows that there was a larger proportion of households in the highest repayment quartile, and a smaller proportion in the lowest repayment quartile.
The total number of households with a mortgage in Willoughby increased by 54 between 2006 and 2011. The most significant change in Willoughby during this period was in the highest quartile which showed an increase of 46 households.