CB3 is above average for energy efficiency — better than most areas in England and Wales.
Energy efficiency in CB3 (Cambridge) sits at an average score of 73 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 37.0% of homes rated A or B and 51.8% in the C or D bands. Meanwhile, 1.8% 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 make up a notable 50% of homes here. Around 54% of properties are owner-occupied , while 35% are privately rented . Gas central heating is the main fuel source for 65% 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 73 to 83 — a 10-point jump that would lift the typical rating to B. If you live in CB3 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 CB3?
Homes in CB3 have an average EPC rating of C, scoring 73 out of 100 for energy efficiency. That figure comes from 5,369 certificates issued across the district.
To put that in perspective, CB3 performs better than most areas in England and Wales — the national average is just 67.
What percentage of homes in CB3 are rated F or G?
1.8% of homes in CB3 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 CB3 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.