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Conservation of fuel and power in existing buildings other than dwellings (2010 edition incorporating 2010, 2011, 2013 and 2016 amendments) (For use in England) (Superseded)

Building Regulations 2010: Approved Documents L2B

NBS, 2015
Conservation of fuel and power in existing buildings other than dwellings (2010 edition incorporating 2010, 2011, 2013 and 2016 amendments) (For use in England) (Superseded)

Document Status



Core Supplement


Building Regulations 2010: Approved Documents


Provides practical guidance for complying with building regulation requirements for energy efficiency for existing buildings other than dwellings. Looks at the requirements, general guidance, guidance for building work for extensions, material change of use and change of energy status, controlled fittings and services, fixed building services and provision, renovation and retained thermal elements.


Superseded by Building Regulations 2010: Approved Documents L-2 Conservation of fuel and power. Volume 2: Buildings other than dwellings (HMG, 2021) on 15/06/2022. Came into effect 1 October 2010 and replaces the 2006 edition (ODPM). Published by NBS, part of RIBA Enterprises Ltd on behalf of HM Government (DCLG). Reprint March 2015 incorporating 2010, 2011 and 2013 amendments. In Wales: Superseded by WG Building Regulations 2010: Approved Documents L2B Conservation of fuel and power in existing buildings other than dwellings (2014 edition) on 31 July 2014. See inside front cover for details of the main changes in the 2010 edition, including changes made by the 2010 and 2011 amendments, the 2013 amendments and the 2016 amendments.




Publisher History

NBS are committed to offering distinctive, innovative specification and information solutions to construction industry professionals and are proud to be leading the construction industry in its digital evolution. Their roots lie in the UK's National Building Specification and for nearly 50 years has been helping the construction industry build better and with lower risk. Their future lies in cloud-based technologies and connected data, as they fast become the information marketplace for the global construction industry.



NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.

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