England · Statutory guidance
Conservation of fuel and power: Approved Document L, Volume 1 — Dwellings
Building regulation guidance on energy efficiency and the conservation of fuel and power.
- Edition
- 2021 edition incorporating 2023 amendments · Volume 1; later editions and transitions on source page
- Search coverage
- 104 of 104 PDF pages · 3 OCR pages
Energy & sustainability
Open original PDF at page 10 Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.
O N L I N E V E R S I O N
Regulation 28: Consequential improvements to energy performance 70
Intention 70
Section 12: Consequential improvements 71
Appendix A: Key terms 72
Appendix B: Reporting evidence of compliance 78
BREL report 78
Photographic evidence 79
Appendix C: Work to thermal elements 80
Appendix D: Specification for a home built with a heat pump 84
Appendix E: Standards referred to 86
Appendix F: Documents referred to 88
Legislation 88
Documents 88
viii Approved Document L Volume 1, 2021 edition Building Regulations 2010
O N L I N E V E R S I O N
Edition and local adoption determine which requirements apply. Use the publisher’s document for the complete clauses, diagrams and amendments.