Regulation 3 Meaning of building work
In these Regulations “building work” means—
the erection or extension of a building;
the provision or extension of a controlled service or fitting in or in connection with a building;
the material alteration of a building, or a controlled service or fitting, as mentioned in paragraph (2);
work required by regulation 6 (requirements relating to material change of use);
the insertion of insulating material into the cavity wall of a building;
work involving the underpinning of a building.
An alteration is material for the purposes of these Regulations if the work, or any part of it, would at any stage result—
in a building or controlled service or fitting not complying with a relevant requirement where previously it did; or
in a building or controlled service or fitting which before the work commenced did not comply with a relevant requirement, being more unsatisfactory in relation to such a requirement.
In paragraph (2) “relevant requirement” means any of the following applicable requirements of Schedule 1, namely—
-
Part A (structure)
-
paragraph B1 (means of warning and escape)
-
paragraph B3 (internal fire spread—structure)
-
paragraph B4 (external fire spread)
-
paragraph B5 (access and facilities for the fire service)
-
Part M (access and facilities for disabled people).