Based on 402 Energy Performance Certificates, W1B in Westminster has an average EPC score of 74 out of 100, placing it above the national average. To put this in context, the national average sits at 67. The most common rating band is C, with 24.9% of homes rated A or B and 67.7% in the C or D bands. Meanwhile, 0.5% 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.

Most of the housing stock here consists of flats. Flats alone account for 95% of all certificated properties — a distinctly urban profile. Around 53% of properties are owner-occupied , while 45% are privately rented . That high proportion of rental homes matters — landlords in W1B 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 74 to 79 — a 5-point jump that would lift the typical rating to C. If you live in W1B 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.