The Housing Minister's asking questions of Kainga Ora over revelations the Dunedin holiday park it owns has sat empty for four years. 

The Crown housing agency bought Aaron Lodge in Kaikorai Valley for more than $4 million, intended to become a social housing development. 

But it's remained vacant, covered in weeds and temporary fencing. 

Chris Bishop told Andrew Dickens that it's a 'pretty crazy' situation, particularly given our housing crisis. 

He says while development does sometimes take a while, four years is a long time for no action so he's asking Kainga Ora to explain. 

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