Section 2(1)(d) in The National Capital Territory Of Delhi Laws (Special Provisions) Act, 2009
(d)"local authority" means the Delhi Municipal Corporation established under the Delhi Municipal Corporation Act, 1957, or the New Delhi Municipal Council established under the New Delhi Municipal Council Act, 1994 or the Delhi Development Authority established under the Delhi Development Act, 1957, legally entitled to exercise control in respect of the areas under their respective jurisdiction;