Demand for properties outside Auckland - based on viewing sessions on realestate.co.nz - was up 14.48 per cent compared with July last year.
Just over 9600 properties were added to the website last month, down 0.6 per cent from last July.
"There have been calls across the nation for measures to rein in house prices, but it may be that the market is actually self-correcting, albeit slightly, with buyers unwilling or unable to meet ever-increasing price rises," said realestate.co.nz brand and commercial manager Vanessa Taylor. "Whether the fall is the start of a trend is still to be determined."
The average asking price was up the most in Marlborough, where it rose by 21 per cent to $503,997. This was a record for the region.
"In addition to Auckland, the main centres where asking prices continued to increase were Waikato, Wellington and Otago, but in Canterbury it's a different picture where asking prices fell for the third month in a row in July," Taylor says.
The average asking price in the region was $462,936 - almost $10,000 less than in May.
The average price fell by the most in Central Otago and the Lakes District, where it slumped 20.9 per cent to $680,672.
While this could be a one-off, Taylor said it was still much lower than the average asking price in July last year of $756,063.
Central Otago is treated as a separate region to Otago, where the average asking price rose 2.3 per cent to $326,102.
Realestate.co.nz is a joint venture between the Real Estate Institute and the New Zealand's biggest real estate agencies.
Asking prices
Auckland: $898,562 (up 1.1 per cent)
Central Otago and Lakes District: $680,672 (down 20.9 per cent)
New Zealand: $569,971 (down 1.3 per cent)
Realestate.co.nz figures for July