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Local authority data · Wales

Commercial EPC & MEES data for Swansea

76.6% of commercial property in Swansea sits below EPC B. Analysis of 3,421 unique commercial properties on the Energy Performance of Buildings Register.

76.6%
of commercial stock below EPC B
296
over 1,000 m² and below B – the 2031 cohort
119
rated F or G – unlettable without an exemption
161 / 319
national rank by share below EPC B

The position in Swansea

There are 3,421 unique commercial properties in Swansea with a certificate on the Energy Performance of Buildings Register. Of those, 2,620 – 76.6% – are rated below EPC B, which is 0.5 percentage points worse 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 Swansea, Wales, Gorseinon, Ammanford, Abertawe. Average floor area is 674 m² and the average asset rating is 73.

791 certificates in the district have expired (23.1% of the total), of which 61 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

Properties analysed3,421
Below EPC B2,620 (76.6%)
Below EPC E – unlettable119 (3.5%)
Over 1,000 m² and below B296
Expired certificates791 (23.1%)
Expired and below E61
Average floor area674 m²
Average asset rating73
National rank161 of 319

Band distribution

Commercial EPC band distribution – Swansea
BandPropertiesShareShare, shown as a barvs England & Wales
A+130.4%
+0.1
A1143.3%
-0.8
B67419.7%
+0.2
C1,25836.8%
+3.6
D85425.0%
-0.7
E38911.4%
-1.5
F461.3%
-0.6
G732.1%
-0.4

Commercial stock by sector

Commercial stock by sector
SectorPropertiesShareShare, shown as a bar
Retail & financial services1,33439.0%
Offices & workshops62118.2%
Restaurants, cafes & pubs52715.4%
Storage & distribution2677.8%
General & special industrial1614.7%
Education962.8%
Universities & colleges812.4%
Hospitals & care homes732.1%

Floor area – who the 2031 standard catches

The 2031 EPC B standard is expected to apply only to buildings over 1,000 m². In Swansea that line falls here:

Floor area distribution – the 1,000 m² line decides who is caught by the 2031 standard
Floor areaPropertiesShareShare, shown as a bar
Under 250 m²1,80352.7%
250–500 m²71220.8%
500–1,000 m²44012.9%
1,000–2,500 m²2818.2%
2,500–10,000 m²1604.7%
Over 10,000 m²250.7%

Find your building in Swansea

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For editors and journalists

Quote – attributable to evenEco

Analysis of the Energy Performance of Buildings Register by evenEco shows that 76.6% of commercial property in Swansea is rated below EPC B – the standard expected to apply to buildings over 1,000 m² from 2031. 296 buildings in the district are both over 1,000 m² and below that standard, and 119 are rated F or G, which has been below the legal minimum for letting since April 2023. Swansea ranks 161 of 319 local authorities in England and Wales.

Please attribute to evenEco and link to evenhub.uk/commercial/areas/swansea/. 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 – Swansea

Commercial EPC summary – Swansea, September 2026
MeasureFigure
Commercial properties analysed3,421
Below EPC B2,620 (76.6%)
Below EPC E – unlettable without exemption119 (3.5%)
Over 1,000 m² and below EPC B296
Expired certificates791 (23.1%)
Average floor area674 m²
National rank (share below EPC B)161 of 319

Common questions

How many commercial properties in Swansea are below EPC B?

2,620 of 3,421 – 76.6% of the commercial stock on the register. That is 0.5 percentage points worse than the England and Wales average of 76.1%.

How many buildings in Swansea are caught by the 2031 EPC B standard?

296 commercial buildings in Swansea 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 Swansea are already unlettable?

119 are rated F or G. Letting those without a registered exemption has been unlawful since 1 April 2023. A further 61 have an expired certificate that was rated F or G.

Where does Swansea rank nationally?

161 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

All 319 local authorities →

Source: GOV.UK Energy Performance of Buildings Register, deduplicated by evenEco to the most recent certificate per propertyAnalysis updated 11 September 2026 Methodology