What insulation adds in N17

67.6 → 79.0

Rating, now → potential

+11.3

Average uplift

£133

Avg saving / yr

39262

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 39262 certificates in N17, the current rating of 67.6 could rise to about 79.0 out of 100. The estimated annual heating cost averages £500 now, and about £368 after the recommended work – an estimated saving of roughly £133 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) – 35.0%
Cavity wall, as built, no insulation (assumed) – 22.5%
System built, as built, no insulation (assumed) – 7.5%

Recorded as having no wall insulation: 67.5%.

Roofs

(another dwelling above) – 27.5%
Pitched, no insulation (assumed) – 15.0%
Pitched, 100 mm loft insulation – 12.5%

Recorded as having no roof insulation: 20.0%.

Glazing

Fully double glazed – 93.8%
High performance glazing – 6.2%

Main heating

Boiler and radiators, mains gas – 82.5%
Community scheme – 10.0%
Room heaters, electric – 5.0%

Which streets need it most

See the streets in N17 with the highest share of homes rated band D or below.

Leakiest streets in N17

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