Statutory guidance

Conservation of fuel and power: Approved Document L

Building regulation in England setting standards for the energy performance of new and existing buildings.

Documents

Approved Document L1A: conservation of fuel and power in new dwellings, 2013 edition with 2016 amendments

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Approved Document L1B: conservation of fuel and power in existing dwellings, 2010 edition (incorporating 2010, 2011, 2013, 2016 and 2018 amendments)

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Approved Document L1B: conservation of fuel and power in existing dwellings, 2010 edition (incorporating 2010, 2011, 2013 and 2016 amendments)

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2018 amendments to 2010 edition of Approved Document L1B - Corrigenda

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Approved Document L2A: conservation of fuel and power in new buildings other than dwellings, 2013 edition with 2016 amendments

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Approved Document L2B: conservation of fuel and power in existing buildings other than dwellings, 2010 edition (incorporating 2010, 2011, 2013 and 2016 amendments)

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2016 amendments to Approved Document L: conservation of fuel and power

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Domestic building services compliance guide – 2013 edition

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Non-domestic building services compliance guide – 2013 edition

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Addendum to non-domestic building services compliance guide – 2013 edition

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Domestic Building Services Compliance Guide 2013 edition (incorporating 2018 amendments)

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Details

This current edition covers the energy efficiency requirements of the building regulations as set out in Part L of Schedule 1 to the Building Regulations and in a number of specific building regulations. Technical guidance is contained in 4 Part L Approved Documents and 2 building services compliance guides.

Transitional provisions

The new 2018 editions of the Approved Document L1B and domestic building services compliance guide with 2018 amendments will come into force on 6 April 2018 only in respect of:

  • work where a building notice or initial notice was given or full plans deposited on or after that date

  • or work where the contract for the provision of the work was agreed on or after that date in cases where no notification to a building control body is required.

The previous editions of the Approved Document L1B and domestic building services compliance guide will continue to apply in respect of:

  • work commenced before 6 April 2018

  • work where a building notice or initial notice was given or full plans deposited before 6 April 2018

  • work where a contract for the provision of the work was agreed before 6 April 2018 where no notification to a building control body was required.

Amendments to building services compliance guides

Please see the addendum to the non-domestic building services compliance guide – 2013 edition.

Amendments to Approved Document L

An amendment document which lists the 2018 changes made to Approved Document L1B has also been published. An amendment document which lists the 2016 changes made to the previous edition of all the Approved Document Ls has also been published.

Archived versions

Archived versions of previous editions are available on the National Archives

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Published 1 March 2014
Last updated 5 April 2018 + show all updates
  1. Publication of 2018 editions of Approved Document L1B and Domestic Building Services Compliance Guide incorporating 2018 amendments.
  2. Added the 2018 amendments to the Domestic Building Services Compliance Guide – 2013 edition document.
  3. Publication of the four Approved Document Ls with 2016 amendments.
  4. First published.