Town halls across London have called for a crackdown on developers sitting on land but failing to build much-needed homes.
They urged the Government to consider bringing in a tax to discourage the practice, known as “land-banking”.
Sir Steve Bullock, housing spokesman for London Councils, representing the 33 local authorities, raised the issue at a Labour conference fringe meeting. He called for an “undeveloped land tax”, levied where planning permission had been granted but no homes built.
Sir Steve said: “It’s frankly unacceptable that developers are hoarding land.
“Cracking down on land-banking could add almost 30,000 homes to London’s stock.”
It came after Ed Miliband announced Labour would give local authorities powers to put a charge on land-banking developers and reclaim the land.