For the 7,931 homes assessed in B1, the average energy score comes in at 76 out of 100, placing it above the national average. The national average is 67, which means B1 performs better than most areas. The most common rating band is C, with 36.5% of homes rated A or B and 60.7% in the C or D bands. Meanwhile, 0.3% 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.

Flats make up the bulk of the housing in this district. Flats alone account for 94% of all certificated properties — a distinctly urban profile. Around 33% of properties are owner-occupied , while 45% are privately rented and 22% are social housing. That high proportion of rental homes matters — landlords in B1 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. A significant share of homes here rely on electric heating, which tends to be more expensive per unit of energy than gas.

There is genuine room for improvement here. If every recommended upgrade were carried out, the average score could climb from 76 to 80 — a 4-point jump that would lift the typical rating to C. If you live in B1 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.