New Housing Minister Bill Marmion has shocked the property market by saying he wants to flood WA with housing lots to cut home prices.

In a speech to Parliament that has set alarm bells ringing throughout the real estate industry, Mr Marmion said the Barnett Government's aim was to "bring house prices down".

Mr Marmion, who took over the job last month after Troy Buswell was sacked, said the only thing the Government could do to achieve its aim was "release more land and houses". He refused to elaborate on his comments yesterday.

The State Government established an Office of Land and Housing Supply in Thursday's Budget and is reviewing available government land which Premier Colin Barnett said would "achieve a comprehensive and co-ordinated approach to housing affordability issues".

Shadow housing minister Mark McGowan warned the policy could result in houses being worth less than what people paid for them.

"If people go into negative equity with their house, that's the worst possible outcome," he said.

Real Estate Institute of WA chief executive Anne Arnold said Australians stored their wealth in the family home and it would be "politically unwise for any government to go down that path".

But the plan won support from developer Nigel Satterley, who said land needed to become more affordable.

But he said the policy would not cut the price of existing houses.

"We're on the cusp of a block shortage and whatever the Government can do should be encouraged," Mr Satterley said.

What do you think we should do?

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