TW18 is around the national average for energy efficiency.
Across 9,276 assessed properties, TW18 achieves an average EPC score of 67 out of 100, placing it around the national average. For reference, the England and Wales average is 67 — so TW18 is around that benchmark. The most common rating band is C, with 12.8% of homes rated A or B and 73.6% in the C or D bands. Meanwhile, 1.7% 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 TW18 and you will mostly see houses. Flats make up a notable 42% of homes here. Around 66% of properties are owner-occupied , while 22% are privately rented . Gas central heating is the main fuel source for 74% 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 67 to 79 — a 12-point jump that would lift the typical rating to C. If you live in TW18 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: 79 (rating C)
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 TW18?
Homes in TW18 have an average EPC rating of D, scoring 67 out of 100 for energy efficiency. That figure comes from 9,276 certificates issued across the district.
This is broadly in line with the national average of 67 — neither particularly efficient nor particularly wasteful. A D rating typically means higher-than-necessary heating bills, especially in older properties without adequate insulation.
What percentage of homes in TW18 are rated F or G?
1.7% of homes in TW18 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 TW18 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.