Section 18(1)

18. (1) When the land has been cleared of buildings in accordance with a slum clearance order, the Authority may at, any time after the expiry of twelve months from the date on which the order becomes operative, acquire and re-develop any land which on the date of the making of the order has not been, or is not in the process of being re-developed by the owner thereof in accordance with the scheme approved by the State Government and any restrictions and conditions imposed under sub-section (5) of Section 17.