Leakiest streets in KT8

77.4%

Band D or below

226

Certificates

57.5

Average rating

£391

Avg potential saving / yr

What this means

Across 226 energy certificates in KT8, 175 (77.4%) are rated band D or below. The average current rating is 57.5 out of 100, which the recommended improvements on those certificates would lift to about 72.0. The average estimated annual heating cost is £1227, falling to about £836 after the recommended work – a saving of roughly £391 a year.

B C D E F G

B 8.4% C 14.2% D 37.6% E 30.5% F 8.0% G 1.3%

Every figure is computed across the certificates in this area – no individual property is identified or listed.

How KT8 compares

Set against the average across the 3,339,357 energy certificates in our dataset (average current rating 67.8, with 51.7% band D or below):

Band D or below here is 77.4%, 25.7 points higher (leakier).
The average current rating here is 57.5, 10.3 points below the wider-dataset average.

Indicative comparison against the certificates we hold, not an official national statistic. Check the official source for area statistics.

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) – 57.5%
Cavity wall, as built, insulated (assumed) – 15.0%
Solid brick, with internal insulation – 5.0%

Recorded as having no wall insulation: 65.0%.

Roofs

(another dwelling above) – 37.5%
Pitched, no insulation (assumed) – 12.5%
Roof room(s), insulated – 5.0%

Recorded as having no roof insulation: 20.0%.

Glazing

Fully double glazed – 40.0%
Single glazed – 36.0%
Partial secondary glazing – 12.0%

Main heating

Boiler and radiators, mains gas – 70.0%
Room heaters, electric – 15.0%
Boiler and underfloor heating, mains gas – 7.5%

Retrofit measures for this housing stock

Based on the construction recorded on the certificates here, these guides cover the measures that most often apply, with typical UK costs and savings cited to public sources.

All retrofit guides

What insulation adds in KT8

See the average current-to-potential uplift and the estimated heating-cost saving for this area.