Auckland's largest real estate agency says sales have fallen, while prices have risen.
Barfoot and Thompson says sales fell 13 percent to 983 in July compared with the same period a year ago.
As well, its new listings of house available for sale fell to a seven-month low in July to almost 1400, from more than 1600 the same time last year.
Barfoot & Thompson managing director Peter Thompson said prices typically dipped at this time of year and the upcoming general election had also had an impact.
Barfoot's average house sale price was $719,312 during the month, but down from a record high of $725,708 in March.
He said the highlight of the month was the strong sales of houses under $500,000, and the sales of 169 houses over $1 million.
The median house price rose 10 percent to $640,000.
The company says the number of new listings continued to fall, but weaker sales in recent months have pushed up the overall number of houses for sale.