Prime Minister John Key said he hasn't spoken to under fire Northland MP Mike Sabin and wouldn't comment on reports of a police investigation into a complaint made against him.

Mr Key was in Mount Wellington, Auckland today to formally open the Community of Refuge Trust housing development.

He addressed media after taking a look around some of the one-bedroom apartments and speaking to tenants in the development.

He said he hadn't spoken to Mr Sabin in the past week.

Advertisement

"I'm not in a position where I'd want to make any comments on that," he said.

He said he expected Mr Sabin would be at Waitangi celebrations next week and the press conference was brought to a close.

Mr Sabin, 46, has gone to ground since reports emerged late last year that he was under investigation by police after a complaint had been laid against him.

Neither Mr Sabin, Prime Minister John Key nor the police have confirmed the reports.

On the topic of the shift to more social housing opportunities, Mr Key said the government were taking the state housing sell-off cautiously, but that community housing providers had the capacity to provide for more tenants.

Social housing and the sale of state houses formed the basis of Mr Key's State of the Nation address yesterday.