Energy Performance of Buildings Certificates in England and Wales: technical notes
Technical notes to accompany the Energy Performance of Buildings Certificates statistics.
Applies to England and Wales
Documents
Details
These technical notes provide information on:
- official statistics status
- data collection
- methodology
- data quality
- definitions
- revisions policy
- other information
Updates to this page
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Updated section 3.1 to include the new de-duplication step in the data cleaning process.
Update history
2026-07-30 09:30
Updated with additional processing for de-duplicating the new dwellings EPC data.
2025-07-31 09:30
Updated section 3.1 to include the new de-duplication step in the data cleaning process.
2025-04-24 09:30
Details of new data cleaning methods were provided.
2023-10-26 09:30
Added data dictionary and related statistics sections. In line with new Office for Statistics Regulation (OSR) policy, all mentions of ‘Experimental Statistics’ have been changed to ‘Official Statistics in Development’.
2022-05-17 12:12
First published.