EPC Swansea: home ratings and certificates
If a Swansea home has an EPC, it's listed on the free GOV.UK register, which you can search by postcode. Band C or D covered most certificates lodged in Swansea over the past year.
Search Swansea EPCs by postcode- The median EPC score for a Swansea home
- 68
- of homes that get a C rating or better
- 46.8%
- EPCs registered during the year that ran to September 2026
- 5,604
Swansea EPC ratings, band by band
Band C led the way at 47.4% for Swansea home EPCs lodged between 1 October 2025 and 30 September 2026, with band D behind at 31.4%. Each band is shown in the table next to the figure for Wales.
Data source: live tables on energy performance certificates from MHCLG, table D1, for the Swansea council area. Homes often get a new certificate when they're sold, let or improved, so this mix doesn't cover the whole housing stock.
| Band | Swansea | Wales |
|---|---|---|
| A | 6.2% | 6.7% |
| B | 9.2% | 11.1% |
| C | 47.4% | 44.6% |
| D | 31.4% | 29.4% |
| E | 4.3% | 6.0% |
| F | 1.1% | 1.6% |
| G | 0.4% | 0.6% |
How Swansea homes rate on their EPCs by property type
At 68, the Swansea median matches the figure for Wales. In Wales, 47.3% of homes earn a rating of C or higher. The highest score, 74, goes to flats and maisonettes; terraced houses score lowest, at 65.
These figures come from the ONS: the median energy efficiency score plus the share at band C or above. Each home's newest certificate within the 10 years to March 2025 was used.
| Home type | Median score | Rated C or above |
|---|---|---|
| Detached | 66 | 40.9% |
| Semi-detached | 66 | 39.2% |
| Terraced | 65 | 34.6% |
| Flat or maisonette | 74 | 74.0% |
Finding a Swansea home's EPC
Use the GOV.UK register to search by postcode, then pick the address; you can view and save a certificate for free. A certificate runs out after 10 years, so look at its date (how long an EPC lasts). If a home doesn't show up, the EPC register Wales page says what to do.
EPC assessor Swansea: getting a new certificate
An accredited domestic energy assessor is the only person who can lodge a new EPC for a Swansea home. You can compare the prices assessors send back by booking an EPC here, or read what an EPC costs first.
Today, a rented home in Wales must reach band E or above (landlord EPC rules). See Swansea council tax for the bills side of a home in Swansea.