Figures also out this week from realestate.co.nz showed asking prices for residential properties hit records in the Coromandel, Hawke's Bay, Otago and Auckland.
The Coromandel's record high was $579,676, up on the previous high of $574,271.
Hawke's Bay's high of $389,654 recorded in February was up from the previous record of $387,504 set in August.
Otago's was $323,367 in February, up on the previous record of $321,188 set in October last year.
Auckland's high of $866,080 was up from the $851,531 previous record set five months ago in September last year.
Chris Kennedy, Harcourts chief executive, said auctions were strong.
"High demand, low supply and the competition this results in is pushing prices ever higher at auction," he said.
Talk of a dip in the property market was not at all backed up by Harcourts' figures, he said.
"The only issue we have is a shortage of new listings. If you are holding back on listing your property because you believe prices have taken a downward turn, you should reconsider," he said.
In early February, Harcourts' data for the Auckland and Northland regions showed an average price of $801,662.
Kennedy says Auckland Council's decision to revert to its 2013 version of the Unitary Plan, which will provide for just 80,000 new homes by 2040, had not done Auckland any favours.
"Close to 300,000 new houses are needed in that time period. There will be no easing of prices while there are not enough houses being built," Kennedy said.