What insulation adds in EC4V

67.3 → 75.5

Rating, now → potential

+8.2

Average uplift

£112

Avg saving / yr

802

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 802 certificates in EC4V, the current rating of 67.3 could rise to about 75.5 out of 100. The estimated annual heating cost averages £393 now, and about £281 after the recommended work – an estimated saving of roughly £112 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

Solid brick, as built, no insulation (assumed) – 40.0%
Cavity wall, as built, insulated (assumed) – 20.0%
System built, as built, insulated (assumed) – 15.0%

Recorded as having no wall insulation: 47.5%.

Roofs

(another dwelling above) – 90.0%
Pitched, insulated at rafters – 2.5%
Flat, no insulation (assumed) – 2.5%

Recorded as having no roof insulation: 2.5%.

Glazing

Fully double glazed – 90.5%
Some double glazing – 4.8%
Single glazed – 4.8%

Main heating

Room heaters, electric – 37.5%
Boiler and radiators, mains gas – 32.5%
Community scheme – 10.0%

Which streets need it most

See the streets in EC4V with the highest share of homes rated band D or below.

Leakiest streets in EC4V

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