"We're very positive going forward, there are no real indicators that we're slowing down," he said.
Leaders managing director Elanor MacDonald said the number of properties they had for sale was half what it had been in April last year, and "competition is fierce".
"Hardly any listings aren't getting multiple offers,"she said, "we're getting a reasonable difference on most listings."
The average spread was between $40,000 to $50,000 but a listing yesterday had a variation of $300,000.
Property Brokers regional manager Paul Whitaker said the large volume of sales was a cumulative effect, built on the momentum seen in the the property boom.
"That momentum will continue right through winter," he said, "with a shortage of stock across all areas, and all spectrums."
Properties were coming on to the market at half the rate of those selling, he said, creating a supply and demand imbalance. With less listed during winter this could shift "closer to the equilibrium".
REINZ reported sales volumes hit new levels and median house prices reached new highs across more regions of New Zealand than ever before.