Approved Document L: Conservation of fuel and power – parts L1A, L1B, L2A and L2B
Approved Documents provide guidance on how to meet the building regulations.
Parts L1A, L1B, L2A and L2B contain guidance on the conservation of fuel and power.
First published 1 March 2014.
Four Approved Document Ls with 2016 amendments published 13 April 2016.
The Approved Documents can be downloaded below and there are two additional compliance guides for building services additional further down.
Approved Document L1B: Conservation of fuel and power in existing dwellings
2010 edition incorporating 2010, 2011, 2013, 2016 and 2018 amendments published 5 April 2018
Approved Document L2A: Conservation of fuel and power in new buildings other than dwellings
Approved Document L2B: Conservation of fuel and power in existing buildings other than dwellings