EPC Ratings in Swansea: How Many Homes Are Below Band C Before the 2030 Rule
Of the 5,486 homes in Swansea that had an EPC lodged from July 2025 to June 2026, 40% were rated D to G — the bands a privately rented home must leave by 1 October 2030. The Wales figure is 42%; England and Wales 40%.
EPC bands in Swansea, July 2025 to June 2026
| Rating | Certificates | Share |
|---|---|---|
| Band A | 95 | 1.7% |
| Band B | 370 | 6.7% |
| Band C | 2,842 | 52% |
| Band D | 1,821 | 33% |
| Band E | 273 | 5.0% |
| Band F | 59 | 1.1% |
| Band G | 26 | 0.5% |
40% below C (bands D to G) against 42% in Wales and 40% across England and Wales. Swansea ranks 180 of 318 local authorities for the share below C (1 = highest share). Since 2008, 101,512 EPCs have been lodged for existing homes in Swansea and 65% of them were below C — recent certificates run better than the long-run stock because newer and improved homes transact more.
Swansea splits fairly evenly. 60% of recent certificates are already C or better, 33% are one band short at D, and 6.5% are E, F or G. For a landlord that means the register is worth checking property by property: the same street can hold a certificate that needs nothing and one that needs two bands of work.
Is Swansea moving towards C?
The direction of travel in Swansea is good. Between July 2024 to June 2025 and July 2025 to June 2026 the share of certificates below C fell from 47% to 40% — a drop of 7.6 percentage points, the 39th largest fall among the 318 areas with a year-on-year figure (England and Wales overall: −2.5 points).
Average floor area per certificate is 87.3 m², close to the 87.1 m² England-and-Wales figure, so national cost guides apply here without much adjustment.
What the 2030 rule costs in Swansea
Privately rented homes need band C from 1 October 2030, with a £10,000 cap on what a landlord must spend before an exemption can be registered; the rules, exemptions and what counts towards the cap are on the EPC C for rentals by 2030 guide.
Put the £10,000 cap in local terms: average private rent in Swansea is £848 a month (ONS, July 2026), so the cap is roughly 11.8 months of rent — and every month a property stands empty for works costs another £848 on top of the bill. The area’s rents, prices and yields are on Swansea: rents, house prices and yield.
Whether the certificate and the works are deductible is on EPC, gas and electrical certificates: deductible? — revenue repairs come off the year’s rent, improvements that add capital value do not (allowable expenses guide).
Nearest neighbours in the ranking, in Wales
| Area | Below C | Year-on-year (pts) |
|---|---|---|
| Blaenau Gwent | 41% | −4.3 |
| Vale of Glamorgan | 41% | −4.3 |
| Monmouthshire | 40% | +1.4 |
| Flintshire | 38% | −0.8 |
| Bridgend | 37% | −4.5 |
| Torfaen | 34% | +0.7 |
All 318 areas ranked · council tax in Swansea 2026/27 · rent, prices and yield in Swansea.
MHCLG, Live tables on Energy Performance of Buildings Certificates, table EB1 — domestic EPCs lodged for existing dwellings by energy-efficiency band, published 30 July 2026, latest four quarters (July 2025 to June 2026) summed per local authority; cumulative figures from 2008. Contains public sector information licensed under the Open Government Licence v3.0. An EPC is lodged when a home is sold, let or newly built, so these are certificates issued, not a census of the housing stock. Shares, ranks and regional figures are ours, computed across 318 local authorities. Download: CSV.
Asked about EPCs here
Of EPCs lodged for existing homes from July 2025 to June 2026, 60% were band C or better and 40% were D to G; band D alone was 33%. (MHCLG live table EB1.)
The share below C moved from 47% (July 2024 to June 2025) to 40% (July 2025 to June 2026): −7.6 percentage points, against −2.5 across England and Wales.
From 1 October 2030 under the government's EPC consultation response, with a £10,000 spending cap before an exemption. Until then the minimum for a new letting is band E.
40% below C against 42% in Wales — a smaller share needing work.
No — only homes with an EPC lodged in the period (sold, let or built). Since 2008 the cumulative share below C is 65%, higher because older certificates and unimproved homes sit in that total.