About 2.26 million London and North West records are at EPC D or below
EPC Atlas analysis of 4,880,729 regional records shows a large lower-rated property pool — alongside substantial potential-rating improvement recorded in EPC data.
Current EPC D or below by region
| Region | D or below | Share of regional dataset | E or below |
|---|---|---|---|
| North West | 1,103,192 | 49.2% | 283,052 |
| London | 1,161,602 | 44.0% | 245,622 |
| Combined | 2,264,794 | 46.4% | 528,674 |
The D-or-below and E-or-below figures are calculated from the complete regional totals and the visible A–E rating counts in EPC Atlas, with the residual representing lower rating bands.
Why EPC D-or-below data is commercially relevant
Lower EPC ratings can indicate a broader pool of potential energy-efficiency conversations, but a rating alone does not identify which measure is suitable. EPC Atlas therefore combines rating evidence with roof and loft, windows, walls, heating, solar, property type, tenure and location.
Across London and the North West, about 46.4% of records are calculated at current EPC D or below. That scale explains why broad postcode lists are often a poor substitute for property-level filtering.
Potential ratings tell a second story
The visible potential-rating counts show 2,626,396 records with potential EPC A or B across the two regions — about 53.8% of all records.
Methodology and sources
These figures describe records currently searchable within the EPC Atlas regional datasets. They are not official estimates of the total number of dwellings in a region and should not be read as a complete inventory of current housing stock. EPC registers can contain certificates issued at different points in time, including certificates that have expired or been replaced.
Government guidance confirms that bulk Energy Performance of Buildings data covers England and Wales and includes certificates registered since 2012, which may have expired or been replaced. Official statistics also caution that EPC-based figures are based on certificates lodged on the register rather than a complete census of every dwelling.
- GOV.UK — Get energy performance of buildings data
- GOV.UK — Energy Performance of Buildings Certificates statistics
- Greater London Authority — State of London: Environment
EPC Atlas uses EPC/property evidence as a prospecting indicator. It is not a building survey, guarantee of ownership, guarantee that work is required, or statement of installation suitability.