Part L - Conservation of fuel and power

Building Services Compliance Guides

The 2013 editions of the Domestic and Non-Domestic Building Services Compliance Guides are the current editions for use in England. They support the 2013 editions of Approved Documents L1A and L2A and the 2010 editions of Approved Documents L1B and L2B (as amended).

They provide guidance on complying with Building Regulations requirements for space heating and hot water systems, mechanical ventilation, comfort cooling, fixed internal and external lighting and renewable energy systems.

They came into effect on 6 April 2014. An addendum to the non-domestic guide has now also been published.

Forthcoming changes

DCLG have published details of amendments to the 'Domestic Building Services Compliance Guide (2013 Edition)' that will take effect from 6 April 2018 (PDF).