NN3 is around the national average for energy efficiency.
The 22,243 EPC certificates on record for NN3 paint a clear picture — the area averages 68 out of 100, placing it around the national average. The national average is 67, which means NN3 performs roughly in line with the rest of the country. The most common rating band is C, with 13.3% of homes rated A or B and 77.2% in the C or D bands. Meanwhile, 1.2% 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.
Houses make up the bulk of the housing in this district. Around 60% of properties are owner-occupied and 24% are social housing. Gas central heating is the main fuel source for 94% 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 68 to 83 — a 15-point jump that would lift the typical rating to B. That is a substantial gain, suggesting many homes are missing basic efficiency measures. If you live in NN3 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 NN3?
Homes in NN3 have an average EPC rating of D, scoring 68 out of 100 for energy efficiency. That figure comes from 22,243 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 NN3 are rated F or G?
1.2% of homes in NN3 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 NN3 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.