PART 2Control of Building Work
Meaning of building work3
1
In these Regulations “building work” means—
a
the erection or extension of a building;
b
the provision or extension of a controlled service or fitting in or in connection with a building;
c
the material alteration of a building, or a controlled service or fitting, as mentioned in paragraph (2);
d
work required by regulation 6 (requirements relating to material change of use);
e
the insertion of insulating material into the cavity wall of a building;
f
work involving the underpinning of a building;
g
work required by regulation 22 (requirements relating to a change of energy status);
h
work required by regulation 23 (requirements relating to thermal elements);
i
work required by regulation 28 (consequential improvements to energy performance).
2
An alteration is material for the purposes of these Regulations if the work, or any part of it, would at any stage result—
a
in a building or controlled service or fitting not complying with a relevant requirement where previously it did; or
b
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.
3
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 to and use of buildings).