National median has risen $9000 to $370,000 in just a month.
Home owners with big mortgages can breathe a sign of relief - interest rates seem destined to stay low, despite a springtime house-price surge.
ANZ senior economist Sharon Zollner says interest rates are likely to stay down because the Reserve Bank is content to remain on the sidelines as rising house prices are not flowing through into economic activity or broadening inflationary pressure.
But whether the market continues to build up a head of steam and home owners start spending more, banking on price rises continuing, is uncertain, she says.
The Real Estate Institute said that from July to August, sales volumes nationally rose 16 per cent and the national median shot up $9000, from $361,000 to $370,000, one of the biggest jumps seen.