Sch 4 para 1
Work consisting of— (a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (d) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (f) in relation to an existing fixed building service, which is not a fixed internal or external lighting system— (i) replacing any part which is not a combustion appliance, (ii) adding an output device, or (iii) adding a control device, where testing and adjustment of the work is not possible or would not affect the use by the fixed building service of no more fuel and power than is reasonable in the circumstances; (g) providing a self-contained fixed building service, which is not a fixed internal or external lighting system, where— (i) it is not a combustion appliance (other than a fixed flueless gas cooker) , (ii) any electrical work associated with its provision is exempt from the requirement to give a building notice or an application for building control approval with full plans by virtue of regulation 9 or 12(6A) , (iii) testing and adjustment is not possible or would not affect its energy efficiency, and (iv) in the case of a mechanical ventilation appliance, the appliance is not installed in a room containing an open-flued combustion appliance whose combustion products are discharged through a natural draught flue; (h) replacing an external door (where the door together with its frame has not more than 50% of its internal face area glazed); (i) in existing buildings other than dwellings, providing fixed internal lighting where no more than 100m 2 of the floor area of the building is to be served by the lighting; (j) replacing— (i) a sanitary convenience with one that uses no more water than the one it replaces, (ii) a washbasin, sink or bidet, (iii) a fixed bath, (iv) a shower, (v) a rainwater gutter, or (vi) a rainwater downpipe, where the work does not include any work to underground drainage, and includes no work to the hot or cold water system or above ground drainage, which may prejudice the health or safety of any person on completion of the work; (k) in relation to an existing cold water supply— (i) replacing any part, (ii) adding an output device, or (iii) adding a control device; (l) providing a hot water storage system that has a storage vessel with a capacity not exceeding 15 litres, where any electrical work associated with its provision is exempt from the requirement to give a building notice or an application for building control approval with full plans by virtue of regulation 9 or 12(6)(b); (m) installation of thermal insulation in a roof space or loft space where— (i) the work consists solely of the installation of such insulation, and (ii) the work is not carried out in order to comply with any requirement of these Regulations.