What insulation adds in EC1A

75.4 → 79.7

Rating, now → potential

+4.2

Average uplift

£66

Avg saving / yr

289

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 289 certificates in EC1A, the current rating of 75.4 could rise to about 79.7 out of 100. The estimated annual heating cost averages £291 now, and about £225 after the recommended work – an estimated saving of roughly £66 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, insulated (assumed) – 42.5%
Solid brick, as built, no insulation (assumed) – 15.0%
Cavity wall, as built, insulated (assumed) – 12.5%

Recorded as having no wall insulation: 21.2%.

Roofs

(another dwelling above) – 78.8%
(other premises above) – 7.5%
Flat, insulated (assumed) – 5.0%

Recorded as having no roof insulation: 1.2%.

Glazing

Fully double glazed – 89.3%
Single glazed – 3.6%
Partial secondary glazing – 3.6%

Main heating

Room heaters, electric – 51.2%
Electric storage heaters – 16.2%
Community scheme – 13.8%

Which streets need it most

See the streets in EC1A with the highest share of homes rated band D or below.

Leakiest streets in EC1A

Keep exploring

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