Barfoot and Thompson Whangarei branch manager Martin Dear said Aucklanders were keen on all sorts of properties, including coastal, investment and horticultural, and particularly mid-sized horticultural blocks with houses.
"It's turned our market around totally," said Mr Dear.
Aucklanders made reasonably quick decisions because they were used to working in a fast Auckland market, he said. Other buyers had been from Tauranga and expats returning to the area.
Real Estate Institute of New Zealand (Reinz) figures show the median price of a Northland house in July was $325,000 - up 16.3 per cent on July last year. Mr Dear said prices were starting to rise because of lack of availability. However, spring would bring more homes. "Houses are selling within five days of listing. It's that Auckland boom just starting to hit us."
Figures show 266 Northland dwellings sold in July, up on 156 last July and 255 in June. Mr Dear thought Aucklanders had started driving the increase.
Reinz said 8121 dwellings sold nationally in July, up 37.8 per cent on July 2014 and 9.4 per cent on June 2015. The July national median price was $465,000, up 11.8 per cent on July 2014 and 3.3 per cent on June.