What insulation adds in SW7

64.1 → 75.6

Rating, now → potential

+11.5

Average uplift

£282

Avg saving / yr

14367

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 14367 certificates in SW7, the current rating of 64.1 could rise to about 75.6 out of 100. The estimated annual heating cost averages £739 now, and about £457 after the recommended work – an estimated saving of roughly £282 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) – 75.0%
Solid brick, as built, insulated (assumed) – 7.5%
Cavity wall, as built, no insulation (assumed) – 5.0%

Recorded as having no wall insulation: 82.5%.

Roofs

(another dwelling above) – 72.5%
Flat, no insulation (assumed) – 10.0%
Pitched, insulated (assumed) – 7.5%

Recorded as having no roof insulation: 12.5%.

Glazing

Single glazed – 45.0%
Partial double glazing – 15.0%
Fully double glazed – 15.0%

Main heating

Boiler and radiators, mains gas – 65.0%
Community scheme – 15.0%
Room heaters, electric – 7.5%

Which streets need it most

See the streets in SW7 with the highest share of homes rated band D or below.

Leakiest streets in SW7

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