Local authority
EPC ratings in Cardiff
Explore EPC ratings for properties in Cardiff. 122,904 properties have been assessed, with an average rating of C. Browse districts below to see local energy efficiency trends, or search for a specific address to view detailed EPC data. The most common improvement recommended across Cardiff is solar photovoltaic panels, 2.5 kwp, followed by solar water heating.
On average, 52% of EPC-rated homes in Cardiff are band A-C and 48% are band D-G, broadly in line with the England & Wales average.
Use these statistics: copy a summary, citation, chart or CSVEPC distribution
Percentage of properties in each EPC band across Cardiff.
District breakdown
9 districts in this authority.
CF1
Properties: 3
Band A-C
33%
Band D-G
67%
CF10
Properties: 10,415
Band A-C
83%
Band D-G
17%
CF11
Properties: 15,084
Band A-C
53%
Band D-G
47%
CF14
Properties: 22,963
Band A-C
44%
Band D-G
56%
CF15
Properties: 4,310
Band A-C
55%
Band D-G
45%
CF23
Properties: 13,570
Band A-C
49%
Band D-G
51%
CF24
Properties: 21,238
Band A-C
41%
Band D-G
59%
CF3
Properties: 13,999
Band A-C
61%
Band D-G
39%
CF5
Properties: 21,305
Band A-C
49%
Band D-G
51%
Common improvements in Cardiff
Top recommended actions across districts in this authority.
- 1
Solar photovoltaic panels, 2.5 kWp
107802 occurrences
- 2
Solar water heating
91423 occurrences
- 3
Low energy lighting for all fixed outlets
79732 occurrences
- 4
Floor insulation (solid floor)
46876 occurrences
- 5
Internal or external wall insulation
26498 occurrences
Check a property in this area
Enter your postcode to view a specific EPC report within Cardiff.
Check first. Book only if needed.
Book an EPC assessment in Cardiff
Check whether your property already has a valid EPC, then arrange an accredited domestic assessment only if you need one.
For journalists, researchers and local groups
Use these statistics
Free to reuse with a link to this page. Figures cover homes with an EPC on the official register, counted by their latest certificate. Homes that have never had an EPC are not included, so the figures describe certified homes, not every home in Cardiff.
Summary
In Cardiff, 51.5% of homes with an EPC are rated band C or above, based on the latest certificate for 122,904 homes on the official register (statistics updated June 2026). That is 3.8 percentage points above the England and Wales figure of 47.7%.
Citation
EPC Advisor (2026). EPC ratings in Cardiff. Statistics updated June 2026. Analysis of the MHCLG Get Energy Performance Data register (Open Government Licence v3.0). https://epcadvisor.co.uk/browse/cardiff
- Band C or above:
- a current rating of A, B or C.
- Homes counted:
- 122,904
- Statistics updated:
- June 2026
- Source:
- The MHCLG Get Energy Performance Data register, published under the Open Government Licence v3.0. How we calculate these figures · All EPC data downloads