Homes in England had a median energy performance certificate (EPC) score of 69 (Band C), reveals the Office for National Statistics records from the 10 years up to March 2025. 

The latest data shows homes in Wales had a median EPC score of 68 (Band D).

Performance across English regions is broadly similar with London, East of England and the South East, having a slightly higher median score of 70 (Band C), compared with Yorkshire and The Humber, with the lowest score of 68 (Band D). 

New dwellings are gradually increasing in energy efficiency in England, going from a median score of 82 in the five-year period to March 2013, to 84 in the five-year period to March 2025.

In Wales, median EPC scores for new dwellings increased from 81 to 84.

Median scores in England for middle-layer super output areas ranged from 85 (Band B) to 48 (Band E).

The higher scoring areas included Gascoigne Estate and Roding Riverside in Barking and Dagenham, Stonebridge in Brent, Wembley Park in Brent, Broughton and Wychnor in Preston, Woolwich Arsenal in Greenwich, Greenwich Peninsula West in Greenwich, and Old Oak and Wormwood in Hammersmith and Fulham.

The lowest scoring area was Upper Dales in Richmondshire. 

Meanwhile in Wales, median scores ranged from 83 (Band B) to 46 (Band E).

The highest median energy efficiency scores were in Pen-dre, Litchard and Coity in Bridgend, Creigiau, Pentyrch and St Fagans in Cardiff, and Langstone and Llan-wern in Newport.

The lowest median score was 46 in Abersochand Aberdaron in Gwynedd.

Mid-Suffolk in the East of England (10.6%), followed by Ceredigion in Wales (9.5%), had the highest proportion of properties listing a heat pump on their EPC.

Smaller rural areas typically had lower median EPC scores than urban or large rural areas, but this is not the case for all local authorities.