Paragraph 4

plans deposited in accordance with those regulations before 1st April 2001;

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

building work and any material change of use completed on or after 28th November 1994 but before 1st April 2001, 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 and 1990 continue to apply by virtue of paragraphs 1, 2 and 3.