Wales
Carmarthenshire
68.3% of homes are below EPC C
Based on analysis of 87,899 EPC certificates
13.0% worse than the national average of 55.3%
68.3%
Below EPC C
60,062 properties
87,899
Properties analysed
EPC certificates
£483.3M
Estimated upgrade cost
to bring all to EPC C
21 / 346
National rank
Worse half nationally
Compared to the national average
Carmarthenshire has 68.3% of homes below EPC C. This is 13.0 percentage points worse than the national average of 55.3% for England and Wales. It ranks 21 out of 346 local authorities, where rank 1 is the worst performing.
EPC Rating Distribution
A1.2%1,045
B7.9%6,983
C22.5%19,809
D34.1%30,004
E20.7%18,181
F9.5%8,335
G4.0%3,542
Ratings D, E, F, and G are below the proposed 2030 minimum standard of EPC C.
Property Type Breakdown
| Property Type | Total | Below C |
|---|---|---|
| House | 64,195 | 69.6% |
| Bungalow | 14,404 | 76.5% |
| Flat | 8,681 | 45.5% |
| Maisonette | 560 | 60.4% |
| Park home | 59 | 98.3% |
Construction Age Breakdown
| Age Band | Total | Below C |
|---|---|---|
| before 1900 | 18,045 | 91.5% |
| 1900-1929 | 14,896 | 88.1% |
| 1930-1949 | 6,437 | 81.2% |
| 1950-1966 | 11,469 | 74.7% |
| 1967-1975 | 7,756 | 75.2% |
| 1976-1982 | 3,962 | 72.6% |
| 1983-1990 | 4,283 | 65.0% |
| 1991-1995 | 3,493 | 59.2% |
| 1996-2002 | 3,111 | 53.4% |
| 2003-2006 | 3,107 | 20.4% |
| 2007-2011 | 981 | 8.7% |
| 2012-2021 | 111 | 9.0% |
| 2022 onwards | 7 | 14.3% |
Tenure Breakdown
| Tenure | Total | Below C |
|---|---|---|
| Owner-occupied | 52,849 | 79.2% |
| Private rental | 14,209 | 74.7% |
| Social rental | 12,802 | 51.0% |
Additional Statistics
£983/yr
Avg heating cost
104 m2
Avg floor area
5.4 t/yr
Avg CO2 emissions
3.8%
Solid wall (uninsulated)
37.6%
No mains gas
For Editors
Pre-written quote
“Carmarthenshire has 68.3% of its housing stock below the proposed 2030 EPC minimum standard, with an estimated upgrade cost of £483.3M. This places it 21 out of 346 local authorities in England and Wales.”
EPCGuide Research Team
Shareable Summary
EPCGuide Research
Carmarthenshire
68.3%below EPC C
87,899 properties analysed
£483.3M estimated upgrade cost
Rank 21 of 346 local authorities
epcguide.co.uk/research/areas/carmarthenshire