EPC Cardiff: home ratings and certificates
Any Cardiff home with an EPC appears on the GOV.UK register, which is free, and a postcode search will find it. Band C or D covered most of the certificates lodged in Cardiff over the past year.
Search Cardiff EPCs by postcode- The median EPC score for homes in Cardiff
- 70
- homes with a C rating or higher
- 58.5%
- EPCs lodged during the year ending September 2026
- 10,075
Cardiff EPC ratings broken down by band
Band C led at 48.9% of home EPCs lodged in Cardiff between 1 October 2025 and 30 September 2026; band D followed at 23.6%. In the table, the Wales figure appears beside each band.
Data from MHCLG live tables on EPCs, table D1, for the Cardiff council area. Homes often get a new certificate when they're sold, let or improved, so this mix isn't the whole housing stock.
| Band | Cardiff | Wales |
|---|---|---|
| A | 8.3% | 6.7% |
| B | 15.8% | 11.1% |
| C | 48.9% | 44.6% |
| D | 23.6% | 29.4% |
| E | 2.7% | 6.0% |
| F | 0.5% | 1.6% |
| G | 0.2% | 0.6% |
EPC ratings for Cardiff homes by type
The Wales figure is 68, and the Cardiff median is 2 points higher. In Wales, 47.3% of homes sit at band C or above. The highest score, 74, goes to flats and maisonettes; terraced houses sit lowest at 67.
Source: ONS figures on median energy efficiency score and the share rated C or above, using each home's latest certificate during the 10 years to March 2025.
| Home type | Median score | Rated C or above |
|---|---|---|
| Detached | 70 | 58.2% |
| Semi-detached | 68 | 47.0% |
| Terraced | 67 | 44.2% |
| Flat or maisonette | 74 | 74.5% |
Finding the EPC for a home in Cardiff
Use a postcode to search the GOV.UK register and pick the address; you can view and save a certificate free of charge. An EPC is valid for 10 years, so check the date on the certificate (how long EPCs last). If a home doesn't show up, the EPC register Wales page tells you what to do.
EPC assessor Cardiff: getting a new certificate
A new EPC for a Cardiff home can only be lodged by an accredited domestic energy assessor. Here you can book an EPC and compare the prices assessors quote you, or first read what an EPC costs.
Today a rented home in Wales must reach band E or above (EPC rules for landlords). For a Cardiff home's bills, see Cardiff council tax.