# The Building Regulations 2010, Regulation 28: Consequential improvements to energy performance

Extent: E

(1) Paragraph (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) Subject 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) Nothing in paragraph (2) requires work to be carried out if it is not technically, functionally and economically feasible.

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Source: https://www.legislation.gov.uk/uksi/2010/2214/regulation/28 (the official version)
Page: https://openlegislation.uk/building-regulations-2010/regulation-28
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.