News and Events


2013 amendments to Part L 2010

Changes to Part L 2010 have been announced by the Department of Communities and Local Government. Parts L1A, L1B, L2A and L2B are amended to take account of a recast of the European Energy Performance of Buildings Directive (Directive 2010/31/EU).

Part L

Updated guidance impacts these areas and is effective on the dates shown:

  • Energy Performance Certificates into force on 9 January 2013; (all Part L Approved Documents)
  • the analysis of high efficiency alternative systems for new buildings occupied by public authorities effective on 9 January 2013 and for all other new buildings effective on 9 July 2013; (ADL1A and ADL2A)
  • the major renovation of existing buildings that comes into force for buildings occupied by public authorities on 9 January 2013 and for all buildings on 9 July 2013 (ADL1B and ADL2B).

High-efficiency alternative systems for new buildings

The key 2013 change to Part L relates to the requirement to consider and analyse the use of high-efficiency alternative systems for new builds in Regulation 25A.

Effective immediately for new buildings to be occupied by public authorities and from 9 July 2013 for all other new buildings, the amendment states that before construction of a new building starts, the person who is to carry out the work must analyse and take into account the technical, environmental and economic feasibility of using high-efficiency alternative systems. These include:

  • decentralised energy supply systems based on energy from renewable sources
  • cogeneration
  • district or block heating or cooling, particularly where it is based entirely or partially on energy from renewable sources
  • heat pumps.

What you need to do:

Prior to work starting on site, the person carrying out the work must give their Building Control body a notice which states that the analysis of high-efficiency alternative systems has been undertaken and documented. The documentation must be available for inspection by the relevant Building Control body.

Find out how this affects you

Need more information or to discuss this and other changes to Part L?

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News Date: 22/01/13