Leakiest streets in N1C

0.2%

Band D or below

2141

Certificates

83.6

Average rating

What this means

Across 2141 energy certificates in N1C, 4 (0.2%) are rated band D or below. The average current rating is 83.6 out of 100, which the recommended improvements on those certificates would lift to about 83.8. The average estimated annual heating cost is £218, falling to about £218 after the recommended work – a saving of roughly £0 a year.

A B C D E

A 0.0% B 91.9% C 7.8% D 0.1% E 0.1%

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

How N1C 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 0.2%, 51.5 points lower (more efficient).
The average current rating here is 83.6, 15.8 points above 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

Average thermal transmittance 0.20 W/m²K – 17.5%
Cavity wall, as built, insulated (assumed) – 15.0%
Average thermal transmittance 0.18 W/m²K – 10.0%

Recorded as having no wall insulation: 0.0%.

Roofs

(other premises above) – 55.0%
(another dwelling above) – 17.5%
Average thermal transmittance 0.13 W/m²K – 7.5%

Recorded as having no roof insulation: 0.0%.

Glazing

Fully double glazed – 100.0%

Main heating

Community scheme – 100.0%

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 N1C

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