Wales
Gwynedd
74.3% of homes are below EPC C
Based on analysis of 57,483 EPC certificates
19.0% worse than the national average of 55.3%
74.3%
Below EPC C
42,721 properties
57,483
Properties analysed
EPC certificates
£376.6M
Estimated upgrade cost
to bring all to EPC C
2 / 346
National rank
Worse half nationally
Compared to the national average
Gwynedd has 74.3% of homes below EPC C. This is 19.0 percentage points worse than the national average of 55.3% for England and Wales. It ranks 2 out of 346 local authorities, where rank 1 is the worst performing.
EPC Rating Distribution
A1.1%630
B4.6%2,652
C20.0%11,480
D30.9%17,790
E22.4%12,859
F13.9%7,971
G7.1%4,101
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 | 39,525 | 77.0% |
| Bungalow | 9,268 | 85.9% |
| Flat | 7,734 | 47.3% |
| Maisonette | 935 | 69.7% |
| Park home | 21 | 66.7% |
Construction Age Breakdown
| Age Band | Total | Below C |
|---|---|---|
| before 1900 | 21,017 | 91.7% |
| 1900-1929 | 6,382 | 84.9% |
| 1930-1949 | 4,358 | 78.7% |
| 1950-1966 | 6,284 | 73.2% |
| 1967-1975 | 4,963 | 78.7% |
| 1976-1982 | 3,160 | 67.1% |
| 1983-1990 | 2,230 | 58.9% |
| 1991-1995 | 1,869 | 50.7% |
| 1996-2002 | 1,341 | 51.5% |
| 2003-2006 | 937 | 29.3% |
| 2007-2011 | 285 | 17.9% |
| 2012-2021 | 119 | 3.4% |
Tenure Breakdown
| Tenure | Total | Below C |
|---|---|---|
| Owner-occupied | 33,679 | 86.1% |
| Social rental | 10,909 | 50.6% |
| Private rental | 9,107 | 79.9% |
Additional Statistics
£1,098/yr
Avg heating cost
95 m2
Avg floor area
5.7 t/yr
Avg CO2 emissions
6.4%
Solid wall (uninsulated)
46.9%
No mains gas
For Editors
Pre-written quote
“Gwynedd has 74.3% of its housing stock below the proposed 2030 EPC minimum standard, with an estimated upgrade cost of £376.6M. This places it 2 out of 346 local authorities in England and Wales.”
EPCGuide Research Team
Shareable Summary
EPCGuide Research
Gwynedd
74.3%below EPC C
57,483 properties analysed
£376.6M estimated upgrade cost
Rank 2 of 346 local authorities
epcguide.co.uk/research/areas/gwynedd