Data from 24,754 property assessments shows E3 averaging 75 out of 100, placing it above the national average. For reference, the England and Wales average is 67 — so E3 is above that benchmark. The most common rating band is C, with 35.8% of homes rated A or B and 60.0% in the C or D bands. Meanwhile, 0.4% 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 E3 and you will mostly see flats. Flats alone account for 77% of all certificated properties — a distinctly urban profile. Around 29% of properties are owner-occupied , while 39% are privately rented and 31% are social housing. That high proportion of rental homes matters — landlords in E3 must comply with the Minimum Energy Efficiency Standards (MEES), which currently require at least an EPC E rating. Properties rated F or G cannot legally be let. Gas central heating is the main fuel source for 60% 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 75 to 80 — a 5-point jump that would lift the typical rating to C. If you live in E3 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.