5. The Building Regulations (Northern Ireland) 2000(1) shall continue to apply to—
(1) plans deposited in accordance with those regulations before 31st October 2012
(2) building work and any material change of use carried out in accordance with such plans with or without any departure or deviation from those plans; and
(3) building work and any material change of use completed on or after 1st April 2000 but before 31st October 2012, other than work to which building bye-laws continue to apply in accordance with paragraph 2 of Schedule 2 to the Building Regulations (Northern Ireland) Order 1979 and work to which the Building Regulations (Northern Ireland) 1973, 1977, 1990 and 1994 continue to apply by virtue of paragraphs 1, 2, 3 and 4.
S.R. 2000 No. 389 as amended by S.R. 2005 No. 295, S.R. 2006 No. 355, S.R. 2006 No. 440, S.R. 2008 No. 170 as amended by S.R. 2008 No. 241 and S.R. 2009 No. 369, S.R. 2010 No. 1 and S.R. 2010 No. 382