What insulation adds in NW5

59.7 → 69.5

Rating, now → potential

+9.8

Average uplift

£157

Avg saving / yr

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 89 certificates in NW5, the current rating of 59.7 could rise to about 69.5 out of 100. The estimated annual heating cost averages £640 now, and about £483 after the recommended work – an estimated saving of roughly £157 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) – 62.5%
Cavity wall, as built, insulated (assumed) – 7.5%
Timber frame, as built, no insulation (assumed) – 6.2%

Recorded as having no wall insulation: 77.5%.

Roofs

(another dwelling above) – 45.0%
Pitched, no insulation (assumed) – 16.2%
Flat, no insulation (assumed) – 6.2%

Recorded as having no roof insulation: 25.0%.

Glazing

Fully double glazed – 40.0%
Single glazed – 38.0%
Partial double glazing – 12.0%

Main heating

Boiler and radiators, mains gas – 73.8%
Community scheme – 17.5%
Room heaters, mains gas – 2.5%

Which streets need it most

See the streets in NW5 with the highest share of homes rated band D or below.

Leakiest streets in NW5

Keep exploring

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