Private sector involvement is critical to quickly delivering new housing and commercial developments in New South Wales, planning minister Kristina Keneally has said.

Outlining government plans to stimulate development and speed up approvals, Keneally says she's considering further measures to fast-track construction.

'I'm also considering further approvals for a rapid rezoning process,' Ms Keneally told a planning conference in Sydney on Tuesday.

'That is to further streamline planning processes.'

She said NSW aimed to have 'Australia's best planning system'.

The Age