2. The Building Regulations (Northern Ireland) 1977(1) shall continue to apply to—
(1) plans deposited in accordance with those regulations before 1st June 1990;
(2) work carried out in accordance with such plans with or without any departure or deviation from those plans; and
(3) work completed on or after 1st October 1977 but before 1st June 1990, 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 continue to apply by virtue of paragraph 1.
S.R. 1977 No. 149 as amended by S.R. 1979 No. 79, S.R. 1980 No. 86; S.R. 1980 No. 332; S.R. 1982 No. 81; S.R. 1984 No.295; S.R. 1984 No. 343 and S.R. 1987 No. 268