What insulation adds in NW7

70.7 → 79.1

Rating, now → potential

+8.4

Average uplift

£155

Avg saving / yr

14041

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 14041 certificates in NW7, the current rating of 70.7 could rise to about 79.1 out of 100. The estimated annual heating cost averages £675 now, and about £520 after the recommended work – an estimated saving of roughly £155 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) – 37.5%
Cavity wall, as built, insulated (assumed) – 12.5%
Average thermal transmittance 0.18 W/m²K – 10.0%

Recorded as having no wall insulation: 45.0%.

Roofs

(other premises above) – 20.0%
Pitched, no insulation (assumed) – 17.5%
(another dwelling above) – 12.5%

Recorded as having no roof insulation: 17.5%.

Glazing

Fully double glazed – 88.9%
Mostly double glazing – 5.6%
Fully triple glazed – 5.6%

Main heating

Boiler and radiators, mains gas – 70.0%
Community scheme – 20.0%
Room heaters, electric – 2.5%

Which streets need it most

See the streets in NW7 with the highest share of homes rated band D or below.

Leakiest streets in NW7

Keep exploring

In this area

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