What insulation adds in EC2Y

67.5 → 69.5

Rating, now → potential

+2.1

Average uplift

£19

Avg saving / yr

2318

Certificates

The realistic uplift

Each energy certificate lists the improvements an assessor recommends and the rating the home would reach if they were done. Averaged across 2318 certificates in EC2Y, the current rating of 67.5 could rise to about 69.5 out of 100. The estimated annual heating cost averages £345 now, and about £326 after the recommended work – an estimated saving of roughly £19 a year.

These are the register's own estimates, averaged across many homes; the figure for any one property depends on its fabric and how it is heated.

What the certificates say about the fabric

The most common construction descriptions recorded across these certificates. Percentages are of certificates where the field was recorded.

Walls

System built, as built, no insulation (assumed) – 35.0%
System built, as built, insulated (assumed) – 20.0%
Cavity wall, as built, insulated (assumed) – 10.0%

Recorded as having no wall insulation: 37.5%.

Roofs

(another dwelling above) – 57.5%
(other premises above) – 25.0%
Flat, insulated (assumed) – 5.0%

Recorded as having no roof insulation: 0.0%.

Glazing

Fully double glazed – 88.9%
Partial double glazing – 11.1%

Main heating

Community scheme – 75.0%
Electric underfloor heating – 10.0%
Electric storage heaters – 7.5%

Which streets need it most

See the streets in EC2Y with the highest share of homes rated band D or below.

Leakiest streets in EC2Y

Keep exploring

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