approvermeans a registered building control approver within the meaning of section 58N of the Act;
buildingmeans any permanent or temporary building but not any other kind of structure or erection, and a reference to a building includes a reference to part of a building;
building workhas the meaning given in regulation 3(1) of the Principal Regulations;
controlled service or fittingmeans a service or fitting in relation to which Part G, H, J or L of Schedule 1 to the Principal Regulations imposes a requirement;
daymeans any period of 24 hours commencing at midnight and excludes any Saturday, Sunday, Bank holiday or public holiday;
designated bodyhas the meaning given in regulation 4;
flatmeans separate and self-contained premises constructed or adapted for use for residential purposes and forming part of a building from some other part of which it is divided horizontally;
material alterationhas the meaning given in regulation 3(2) of the Principal Regulations;
material change of usehas the meaning given in regulation 5 of the Principal Regulations;
the Actmeans the Building Act 1984;
the Principal Regulationsmeans the Building Regulations 2010.