What insulation adds in EC3N

73.0 → 78.2

Rating, now → potential

+5.2

Average uplift

£53

Avg saving / yr

555

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 555 certificates in EC3N, the current rating of 73.0 could rise to about 78.2 out of 100. The estimated annual heating cost averages £368 now, and about £315 after the recommended work – an estimated saving of roughly £53 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) – 27.5%
System built, as built, insulated (assumed) – 20.0%
Cavity wall, as built, insulated (assumed) – 12.5%

Recorded as having no wall insulation: 37.5%.

Roofs

(another dwelling above) – 65.0%
(other premises above) – 12.5%
Pitched, insulated (assumed) – 5.0%

Recorded as having no roof insulation: 2.5%.

Glazing

Fully double glazed – 80.0%
Full secondary glazing – 13.3%
Fully triple glazed – 6.7%

Main heating

Room heaters, electric – 27.5%
Boiler and radiators, mains gas – 27.5%
Community scheme – 22.5%

Which streets need it most

See the streets in EC3N with the highest share of homes rated band D or below.

Leakiest streets in EC3N

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