London flat energy efficiency

January 2026

Flats are energy-efficient. The average flat energy rating in London is 70.4, C rating. This is by 0.5 better score than the average flat energy rating in England and Wales. The average potential rating is 76.8, C rating.

London flats by energy rating

Energy rating	London	England & Wales
█ A	0.1%	0.1%
█ B	20.7%	17.4%
█ C	61.9%	64.6%
█ D	8.8%	7.7%
█ E	7.2%	8.2%
█ F	1.0%	1.6%
█ G	0.3%	0.5%

London flats by potential energy rating

Potential energy rating	London	England & Wales
█ A	0.1%	0.1%
█ B	30.9%	27.1%
█ C	65.7%	68.9%
█ D	1.9%	2.0%
█ E	1.1%	1.4%
█ F	0.2%	0.3%
█ G	0.1%	0.1%

London flats by main heating control energy efficiency

Main heating control	London	England & Wales
█ very poor	6.8%	4.7%
█ poor	10.0%	14.1%
█ average	27.1%	24.0%
█ good	53.4%	54.1%
█ very good	2.7%	3.1%

London flats by main heating energy efficiency

Main heat efficiency	London	England & Wales
█ very poor	9.2%	14.6%
█ poor	2.7%	4.4%
█ average	7.1%	12.2%
█ good	71.2%	62.8%
█ very good	9.8%	5.9%

London flats by walls energy efficiency

Walls efficiency	London	England & Wales
█ very poor	36.5%	21.9%
█ poor	14.7%	14.7%
█ average	5.5%	8.9%
█ good	25.8%	39.4%
█ very good	17.5%	15.2%

London flats by windows energy efficiency

Windows efficiency	London	England & Wales
█ very poor	14.6%	8.9%
█ poor	5.8%	4.4%
█ average	38.7%	42.0%
█ good	25.7%	31.7%
█ very good	15.2%	12.9%

London flats by hot water heating energy efficiency

Hot water heating energy efficiency	London	England & Wales
█ very poor	8.2%	14.2%
█ poor	4.3%	6.6%
█ average	10.3%	13.5%
█ good	65.9%	58.3%
█ very good	11.2%	7.4%

London flats by lighting energy efficiency

Lightning energy efficiency	London	England & Wales
█ very poor	12.4%	10.8%
█ poor	4.9%	5.4%
█ average	9.0%	10.2%
█ good	12.6%	13.9%
█ very good	61.1%	59.8%

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