What insulation adds in W11

66.4 → 73.2

Rating, now → potential

+6.8

Average uplift

£185

Avg saving / yr

19731

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 19731 certificates in W11, the current rating of 66.4 could rise to about 73.2 out of 100. The estimated annual heating cost averages £864 now, and about £679 after the recommended work – an estimated saving of roughly £185 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) – 36.2%
System built, as built, no insulation (assumed) – 31.2%
System built, with external insulation – 7.5%

Recorded as having no wall insulation: 75.0%.

Roofs

(another dwelling above) – 70.0%
Pitched, no insulation (assumed) – 7.5%
Flat, limited insulation (assumed) – 3.8%

Recorded as having no roof insulation: 12.5%.

Glazing

Fully double glazed – 67.9%
Single glazed – 20.8%
Partial double glazing – 5.7%

Main heating

Boiler and radiators, mains gas – 75.9%
Community scheme – 8.9%
Electric storage heaters – 5.1%

Which streets need it most

See the streets in W11 with the highest share of homes rated band D or below.

Leakiest streets in W11

Keep exploring

In this area

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