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  Comparing results in 2015 with 2010

The 2010 and 2015 House Condition Surveys used the same sampling method, which included nationwide coverage and owned and rented houses. A comparison of findings from these two surveys shows some positive change in our housing stock, but also highlights there is still significant scope for improvement. The results shown below highlight a few of these findings, with a more detailed report available to download.

Overall assessment of level of maintenance
Using the assessment of how well-maintained properties were overall in 2010 and 2015 shows there are indications that house maintenance may be improving across the whole housing stock. However, rentals remain in poorer state of repair on average than owner-occupied houses.

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Figure 15. Changes in overall assessed level of maintenance between 2010 and 2015 [Source: BRANZ House Condition Survey 2010 and 2015/16].

Heating, insulation and ventilation

Analysis was carried out to compare heating, insulation and ventilation data from the 2010 and 2015 House Condition Surveys. Results from this analysis show: 
• More houses in 2015 met EECA-recommended insulation levels of at least 120mm insulation in the roof space - 37% compared with 13% in 2010.
• More houses had fixed heating sources, heat pumps in particular. The proportion of houses with heat pumps increased from 26% in 2010 to 39% in 2015.
• Fewer houses had visible mould in 2015 - 49% compared with 59% in 2010. Relatedly, more houses had mechanical ventilation which helps to remove moisture in bathrooms.


Key findings are summarised in the image below. Download the full report

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Links to other 2015 House Condition Survey analysis reports

Housing condition
Ventilation and moisture control
Mould and damp
2015 survey report and Warm, dry, healthy report

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