"It's a good thing that we're getting a good number of skilled people coming to the region, but it's not a good thing for a lot of those people because there isn't a lot of jobs for them," Mr Rosemergy said.
High-paying jobs were in particularly high demand.
"There's increasing numbers of people relocating to Northland that used to be in senior management, sales manager and general management-type roles, but there aren't a lot of those advertised in the Northland market.
"Some face the fact they'll have to take a pay decrease but not many would take $30,000 to $40,000 less just because they've moved to Northland ... We'd love to see head offices based in Northland because that would bring senior executive-type roles, but we're not seeing that happening."
In about 15 cases in the past year, Mr Rosemergy had spoken to people who had moved from Auckland without securing a job and went six, eight or 12 months without work.
"They sell [property] in Auckland for around $1 million, get something for about half of that in Northland, and then look for a job because they've still got to live. I tell people to find a job first before moving, or if they've already moved, I tell them they may have to 'buy a job' ... create their own business in Northland because we just don't have the number or variety of jobs that Auckland has."
Meanwhile, Trade Me listings were up 5.3 per cent year-on-year nationwide. Spokesman Peter Osborne said throughout the country applicant numbers per job were up more than 7 per cent on a year ago.