1.1 This approved document is one of four approved documents that give guidance on how to comply with the energy efficiency requirements of the Building Regulations:
Approved Document L1A: Conservation of fuel and power in new dwellings
Approved Document L1B: Conservation of fuel and power in existing dwellings
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
The approved documents are supported by the:
Domestic Building Services Compliance Guide
Non-Domestic Building Services Compliance Guide
1.2 This approved document contains the following sections:
Section 1 sets out the relevant legal requirements and provides an overview of the steps to demonstrate compliance.
Section 2 sets out the considerations that apply to demonstrating that the design of the building will meet the energy efficiency requirements.
Section 3 sets out the considerations that apply when demonstrating that the design has been appropriately translated into actual construction performance.
Section 4 describes the information that should be provided to occupiers to help them achieve reasonable standards of energy efficiency in practice.
Section 5 provides a pointer to some useful information on different design approaches to meeting the energy efficiency requirements
Appendix A: Key terms and abbreviations
Appendix B: Guidance on the types of building work covered by this approved document
Appendix C: Reporting evidence of compliance
Appendix D: Documents referred to
Appendix E: Standards referred to
Energy performance certificates
1.3 Regulation 7A of the Energy Performance of Buildings (England and Wales) Regulations 2012 requires that when a dwelling is erected the person carrying out the work must give an energy performance certificate to the owner of the building and a notice to the building control body (BCB) that a certificate has been given including the reference number under which the certificate has been See also the Energy Performance of Buildings (England and Wales) Regulations 2012 (SI 2012/3118) at www.legislation.gov.uk and detailed guidance on energy performance certificates at www.gov.uk