Data from 1,798 property assessments shows EC1Y averaging 72 out of 100, placing it above the national average. For reference, the England and Wales average is 67 — so EC1Y is above that benchmark. The most common rating band is C, with 25.3% of homes rated A or B and 67.9% in the C or D bands. Meanwhile, 0.8% of homes sit in the F or G bands — the least efficient categories. In practical terms, a C rating suggests reasonably efficient homes, though there is still room for improvement on heating and insulation.

Walk through EC1Y and you will mostly see flats. Flats alone account for 90% of all certificated properties — a distinctly urban profile. Around 29% of properties are owner-occupied , while 31% are privately rented and 40% are social housing. Gas central heating is the main fuel source for 68% of homes, which is typical for urban areas across England.

There is genuine room for improvement here. If every recommended upgrade were carried out, the average score could climb from 72 to 77 — a 5-point jump that would lift the typical rating to C. If you live in EC1Y and want to reduce your energy bills, start with our guide to loft insulation — it is one of the most cost-effective upgrades you can make.