Section 2(1)(a) in The National Capital Territory Of Delhi Laws (Special Provisions) Act, 2007
(a)"building bye-laws" means bye-laws made under section 481 of the Delhi Municipal Corporation Act, 1957 or the bye-laws made under section 188, sub-section(3) of section 189 and sub-section (1) of section 190 of the Punjab Municipal Act, 1911, as in force in New Delhi or the regulations made under sub-section (1) of section 57 of the Delhi Development Act, 1957, relating to buildings;