Postcode district energy-performance profile
CB23 EPC ratings and energy costs
Understand how homes in CB23 score, what certificate-estimated energy costs look like and how much improvement the recorded recommendations suggest.
Average EPC
C 74
5.5 points above analysed national average
Rated C or above
74.2%
of analysed certificates
Potential uplift
+12
average score points
Properties represented
6K
from 6K certificates
At a glance
What the data says about CB23
74.2%
rated A–C
8.6%
rated E–G
£1,026
certificate-estimated annual cost
Cost figures are averages of estimates recorded on EPCs at different dates. They are useful for comparing areas, but they are not a forecast of a current household bill.
Average EPC score in CB23
EPC band distribution in CB23
Certificate-estimated energy costs
| Cost Type | CB23 | National Avg | Difference |
|---|---|---|---|
| Heating | £731/yr | £782/yr | ▼ £51 |
| Hot water | £187/yr | £184/yr | ▲ £3 |
| Lighting | £108/yr | £95/yr | ▲ £13 |
| Total | £1,026/yr | £1,061/yr | ▼ £35 |
These values come from certificate assessments and reflect standardised occupancy assumptions and energy prices used when each EPC was produced. They are not live tariffs.
Property types in the dataset
Main heating fuel
Carbon emissions and improvement potential
3.1 t
current annual CO₂ estimate
1.7 t
potential annual estimate
106 m²
average floor area
When the represented homes were built
Average EPC score over time
- 2020
- 69
- 2021
- 73
- 2022
- 74
- 2023
- 75
- 2024
- 75
- 2025
- 76