The position in Cardiff
There are 6,166 unique commercial properties in Cardiff with a certificate on the Energy Performance of Buildings Register. Of those, 4,630 – 75.1% – are rated below EPC B, which is 1.0 percentage points better than the England and Wales average of 76.1%.
The largest category locally is retail & financial services, and the postal towns and districts most represented are Cardiff, Cardif, Cardiff Central, Canton, Pontyclun. Average floor area is 797 m² and the average asset rating is 72.
1,291 certificates in the district have expired (20.9% of the total), of which 140 were rated F or G when issued – the least comfortable position on the register, and the one owners are least likely to know about.
Key figures
Band distribution
| Band | Properties | Share | Share, shown as a bar | vs England & Wales |
|---|---|---|---|---|
| A+ | 8 | 0.1% | -0.2 | |
| A | 191 | 3.1% | -1.0 | |
| B | 1,337 | 21.7% | +2.2 | |
| C | 2,125 | 34.5% | +1.3 | |
| D | 1,607 | 26.1% | +0.4 | |
| E | 685 | 11.1% | -1.8 | |
| F | 110 | 1.8% | -0.1 | |
| G | 103 | 1.7% | -0.8 |
Commercial stock by sector
| Sector | Properties | Share | Share, shown as a bar |
|---|---|---|---|
| Retail & financial services | 2,265 | 36.7% | |
| Offices & workshops | 1,450 | 23.5% | |
| Restaurants, cafes & pubs | 846 | 13.7% | |
| Storage & distribution | 473 | 7.7% | |
| General & special industrial | 359 | 5.8% | |
| Education | 163 | 2.6% | |
| Assembly & leisure | 125 | 2.0% | |
| Primary healthcare | 115 | 1.9% |
Floor area – who the 2031 standard catches
The 2031 EPC B standard is expected to apply only to buildings over 1,000 m². In Cardiff that line falls here:
| Floor area | Properties | Share | Share, shown as a bar |
|---|---|---|---|
| Under 250 m² | 3,218 | 52.2% | |
| 250–500 m² | 1,227 | 19.9% | |
| 500–1,000 m² | 778 | 12.6% | |
| 1,000–2,500 m² | 560 | 9.1% | |
| 2,500–10,000 m² | 311 | 5.0% | |
| Over 10,000 m² | 72 | 1.2% |
Find your building in Cardiff
Search the register by postcode and see every certificate on your property, free.
For editors and journalists
Quote – attributable to evenEco
Please attribute to evenEco and link to evenhub.uk/commercial/areas/cardiff/. Figures derived from the GOV.UK Energy Performance of Buildings Register, deduplicated to the most recent certificate per property. Media enquiries: contact us.
Shareable summary – Cardiff
| Measure | Figure |
|---|---|
| Commercial properties analysed | 6,166 |
| Below EPC B | 4,630 (75.1%) |
| Below EPC E – unlettable without exemption | 213 (3.5%) |
| Over 1,000 m² and below EPC B | 559 |
| Expired certificates | 1,291 (20.9%) |
| Average floor area | 797 m² |
| National rank (share below EPC B) | 203 of 319 |
Common questions
How many commercial properties in Cardiff are below EPC B?
4,630 of 6,166 – 75.1% of the commercial stock on the register. That is 1.0 percentage points better than the England and Wales average of 76.1%.
How many buildings in Cardiff are caught by the 2031 EPC B standard?
559 commercial buildings in Cardiff are over 1,000 m² and currently rated below EPC B, which is the cohort the 2031 standard is aimed at.
How many commercial buildings in Cardiff are already unlettable?
213 are rated F or G. Letting those without a registered exemption has been unlawful since 1 April 2023. A further 140 have an expired certificate that was rated F or G.
Where does Cardiff rank nationally?
203 of 319 local authorities, ranked by the share of commercial stock below EPC B, with rank 1 being the highest share.
Local authorities with a similar profile
Merton
75.2% below EPC B · 2,974 properties
See the data →Knowsley
75.2% below EPC B · 1,778 properties
See the data →West Berkshire
75.1% below EPC B · 2,919 properties
See the data →Rushcliffe
75.1% below EPC B · 1,556 properties
See the data →Liverpool
75.1% below EPC B · 8,237 properties
See the data →Broadland
75.1% below EPC B · 1,501 properties
See the data →