Buiding Regulations L1B Section
Energy Performance Certificates - Regulations 29
(1) This regulation applies where -
(a) building is erected; or
(b) a building is modified so that it has a greater or fewer number of parts designed or altered for separate use than it previously had, where the modification includes the provision or extension of any of the fixed services for heating , hot water, air conditioning for mechanical ventilation..
(2) The carrying out the workshall -
(a) give an energy performance certificate for the building to the owner of the building; and
(b) give to the local authority notice to that effect, including the reference number under which the energy performance certificate has been registered in accordance with regulation 17F(4)