Conservation of fuel and power: Approved Document L, Volume 2 — Buildings other than dwellings

O N L I N E V E R S I O N R28 Regulation 28: Consequential improvements to energy performance This section deals with the requirements of regulation 28 of the Building Regulations 2010. Regulation Consequential improvements to energy performance 28. (1) P aragraph (2) applies to an existing building with a total useful floor area over 1,000m2 where the proposed building work consists of or includes— (a) an extension; (b) the initial provision of any fixed building services; or (c) an increase to the installed capacity of any fixed building services. (2) S ubject to paragraph (3), where this paragraph applies, such work, if any, shall be carried out as is necessary to ensure that the building complies with the requirements of Part L of Schedule 1. (3) N othing in paragraph (2) requires work to be carried out if it is not technically, functionally or economically feasible. NOTE: Where the building control body is an approved inspector, see regulation 20 of the Building (Approved Inspectors etc.) Regulations 2010 (as amended). Intention In the Secretary of State’s view, where regulation 28 applies, the requirements of this regulation are met for existing buildings with a total useful floor area over 1000m2 by carrying out consequential improvements that are technically, functionally and economically feasible, by following the guidance in Section 12. 81 Building Regulations 2010 Approved Document L Volume 2, 2021 edition O N L I N E V E R S I O N