Section 274(a)(iaa): inserted, on 1 February 2010, by section 28 of the Building Amendment Act 2009 (2009 No 25).
Section 274(a)(iab): inserted, on 1 July 2017, by section 35 of the Building (Earthquake-prone Buildings) Amendment Act 2016 (2016 No 22).
Section 274(a)(ii): repealed, on 14 April 2005, by section 20(2) of the Building Amendment Act 2005 (2005 No 31).