CM23 is around the national average for energy efficiency.
The 14,801 EPC certificates on record for CM23 paint a clear picture — the area averages 70 out of 100, placing it around the national average. The national average is 67, which means CM23 performs roughly in line with the rest of the country. The most common rating band is D, with 25.8% of homes rated A or B and 64.1% in the C or D bands. Meanwhile, 1.5% of homes sit in the F or G bands — the least efficient categories. In practical terms, a rating of D means many homes here lose more heat than average — potentially adding £200-400 per year to energy bills compared to a C-rated home.
Houses make up the bulk of the housing in this district. Flats make up a notable 23% of homes here. Around 71% of properties are owner-occupied . Gas central heating is the main fuel source for 84% 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 70 to 83 — a 13-point jump that would lift the typical rating to B. If you live in CM23 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.
EPC Rating Distribution
Energy Efficiency Score
Potential score if all improvements made: 83 (rating B)
Recommended Improvements
Government funding may be available for some of these improvements. Check grants →
More data — property types, tenure & fuel
Property Types
Tenure
Main Fuel Types
Frequently asked questions
What is the average EPC rating in CM23?
Homes in CM23 have an average EPC rating of C, scoring 70 out of 100 for energy efficiency. That figure comes from 14,801 certificates issued across the district.
This is broadly in line with the national average of 67 — neither particularly efficient nor particularly wasteful.
What percentage of homes in CM23 are rated F or G?
1.5% of homes in CM23 fall into the F or G bands — the lowest energy efficiency ratings. Nationally, the figure is 2.9%.
This is actually better than the national picture, suggesting the housing stock in CM23 is in relatively good shape — though any home rated F or G would still benefit enormously from basic upgrades. Landlords should note that F and G rated properties cannot legally be rented out under current MEES rules.