Residential Mobility and Energy Performance Certificate (RMEPC) data are compiled through the linkage of Linked Consumer Registers (LCRs), and Domestic Energy Performance Certificates (EPCs) at a property level.

The data provide average and median changes of energy performance rating, potential energy performance rating, and total floor area of residential move out, into, and within each Local Authority District (LAD) level in Great Britain (GB). These metrics are aggregated for the entire period from 2009 to 2023 and further segmented into three-year intervals within this timeframe. The data allow researchers to explore changes in residential mobility at the local scale, along with changes in housing energy and space. Both the average and median changes in energy performance rating, potential energy performance rating, and total floor area of the residences of movers are provided for adult individuals moving out of, moving into (which includes both moving into and moving within), for each GB LAD. These datasets offer insights into both the overall changes in a property's EPC during migration throughout the entire time period, and provide more detailed information at three-year intervals. The data undergoes annual updates.

Content

The RMEPC is delivered as a selection of six datasets, divided into three categories, which are labelled as 'move out' (mo), 'move into' (mi), and 'move within' (wi) for each LAD in GB. For each type of mover (e.g., move out), one dataset provides statistics for the entire time period between 2009 and 2023, while the other dataset provides statistics for every three-year segment within the same period. Statistics for units with fewer than five movers are marked with an asterisk (*). Field level metadata are provided at the end of this profile document. These six datasets are aggregated results obtained from linking our Linked Consumer Registers (LCRs) and Domestic EPC data. A brief context of the linkage between LCR and EPC data is provided in the Contextual Note document.

(1) RMEPC move out
The RMEPC move out datasets provide average and median changes of energy performance rating, potential energy performance rating, and total floor area, for the residences of individuals moving out of each home LAD. Two RMEPC data products have been published. The first one, named 'rmepc_laua21_mo', aggregates data for the entire time period between 2009 and 2023, while the second one, 'rmepc_laua21_mo_threeyears', provides data for three-year intervals within the same time period.

(2) RMEPC move into
The RMEPC move into datasets provide average and median change of energy performance rating, potential energy performance rating and total floor area for the residences of individuals moving into each LAD in GB. Similar to the previously mentioned move-out datasets, there are two RMEPC move-in products. The first one, named ‘rmepc_laua21_mi', aggregates data for the entire time period between 2009 and 2023, while the second one, named rmepc_laua21_mi_threeyears', provides data for three-year intervals within the same time frame.

(3) RMEPC move within
The RMEPC move within datasets provide the average and median changes of energy performance rating, potential energy performance rating and total floor area for the residences of individuals moving within LADs in GB. Two RMEPC move within products are available. The first, labelled 'rmepc_laua21_wi', is data for the entire time period spanning from 2009 to 2023. The second, named 'rmepc_laua21_mi_threeyears', offers data at three-year intervals within the same timeframe.

Quality, Representation and Bias

The underpinning data comprise the CDRC LCR_EPC dataset, which establishes links between Energy Performance Certificates (EPCs) and the origin and destination addresses of individual movers within the LCR migration model. Only around 59% of residential properties across GB have EPC records for the period between 2009 and 2023. This partial record coverage means that, for nearly half of the movers within this time period, EPC information cannot be linked to the LCR migration model, due to the EPC data being unavailable for either their previous or their current addresses. Furthermore, it is important to highlight that the representation of Scottish EPCs in the dataset is lower when compared to England and Wales. Consequently, the number of movers with EPCs in the CDRC LCR_EPC data is reduced in Scotland, compared to England and Wales. For comprehensive details on the source and reliability of the CDRC LCR_EPC dataset, please refer to the Contextual Note.