Beijing plans this year to strictly control the recent increase of houses that have "limited property rights" and were illegally built on collectivelyowned rural lands, authorities said.

Deputy Mayor Chen Gang said that the city government has a zero-tolerance policy for such illegal houses under construction or for sale.

The government will eventually demolish such illegal homes built on riverbanks, farmland or dangerous areas, while the fate of other such houses will be determined on a case-by-case basis, he said.