What is the average EPC rating in Swansea?

The analysed certificates in Swansea have an average EPC rating of D, with an average efficiency score of 68 out of 100.

How many properties does the Swansea analysis represent?

The 2020–2025 analysis contains 34,520 certificates linked to 33,497 distinct property references. A property may have more than one certificate.

Can EPCScore show the certificate for a specific home in Swansea?

No. EPCScore publishes aggregated area statistics. Use the official GOV.UK Energy Performance of Buildings Register to find an individual certificate.

Local authority energy-performance profile

Swansea EPC ratings and energy costs

Understand how homes in Swansea score, what certificate-estimated energy costs look like and how much improvement the recorded recommendations suggest.

Compare with another area →

Average EPC

D 68

0.5 points below analysed national average

Rated C or above

52.4%

of analysed certificates

Potential uplift

+15

average score points

Properties represented

33K

from 35K certificates

At a glance

What the data says about Swansea

52.4%

rated A–C

11.1%

rated E–G

£1,066

certificate-estimated annual cost

Cost figures are averages of estimates recorded on EPCs at different dates. They are useful for comparing areas, but they are not a forecast of a current household bill.

Latest official local-authority table

Updated through 30 June 2026

111,325

domestic EPC lodgements since 2008

40.3%

rated C or above

21.5%

rated E, F or G

The current MHCLG live table counts certificate lodgements, not unique homes. It complements the more detailed 2020–2025 EPCScore analysis below.

Housing market context — May 2026

Average property price

£206,087

Annual change

+1.1%

Context

Official UK HPI local-authority average

detached£328,777

semi-detached£211,318

terraced£169,566

flat£109,747

UK HPI figures are provisional and can be revised. They describe the whole local housing market; EPCScore does not infer that EPC ratings caused local price levels or changes. View the official UK HPI ↗

Average EPC score in Swansea

A92+

1.7%

B81–91

10.2%

C69–80

40.6%

D55–68

36.5%

E39–54

8.6%

F21–38

1.8%

G1–20

0.7%

EPC band distribution in Swansea

5701.7%

10.2%

3,516

40.6%

14,016

36.5%

12,591

8.6%

2,975

6211.8%

2310.7%

Certificate-estimated energy costs

Cost Type	Swansea	National Avg	Difference
Heating	£791/yr	£782/yr	▲ £9
Hot water	£176/yr	£184/yr	▼ £8
Lighting	£99/yr	£95/yr	▲ £4
Total	£1,066/yr	£1,061/yr	▲ £5

These values come from certificate assessments and reflect standardised occupancy assumptions and energy prices used when each EPC was produced. They are not live tariffs.

Property types in the dataset

House

23,17267.1%

Flat

8,43824.4%

Bungalow

2,2446.5%

Maisonette

6531.9%

Park home

130.0%

Main heating fuel

Mains gas

29,27786.2%

Electric

3,57610.5%

Oil

5571.6%

Other

2940.9%

LPG

2710.8%

Carbon emissions and improvement potential

3.3 t

current annual CO₂ estimate

1.6 t

potential annual estimate

88 m²

average floor area

When the represented homes were built

Pre-1900

10%

1900–1929

21%

1930–1949

1950–1966

15%

1967–1975

10%

1976–1982

1983–1990

1991–1995

1996–2002

2003–2006

2007–2011

2012+

Average EPC score over time

2020: 66
2021: 67
2022: 67
2023: 68
2024: 68
2025: 70

What to do next

Find one property's EPC ↗

Use the official register for an address-level certificate.

Plan sensible improvements →

Read recommendations in the right order before spending.

Compare another area →

Put two postcode districts side by side.

Check the methodology →

Understand coverage, dates and limitations.