What is the average EPC rating in Conwy?

The analysed certificates in Conwy have an average EPC rating of D, with an average efficiency score of 63 out of 100.

How many properties does the Conwy analysis represent?

The 2020–2025 analysis contains 20,985 certificates linked to 19,776 distinct property references. A property may have more than one certificate.

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

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

Conwy EPC ratings and energy costs

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

Compare with another area →

Average EPC

D 63

5.5 points below analysed national average

Rated C or above

40.6%

of analysed certificates

Potential uplift

+18

average score points

Properties represented

20K

from 21K certificates

At a glance

What the data says about Conwy

40.6%

rated A–C

20.8%

rated E–G

£1,321

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

63,468

domestic EPC lodgements since 2008

32.3%

rated C or above

28.7%

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

£213,240

Annual change

+1.8%

Context

Official UK HPI local-authority average

detached£315,690

semi-detached£219,473

terraced£170,778

flat£125,399

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 Conwy

A92+

1.0%

B81–91

7.7%

C69–80

31.9%

D55–68

38.6%

E39–54

13.8%

F21–38

4.7%

G1–20

2.3%

EPC band distribution in Conwy

2151.0%

1,6267.7%

31.9%

6,685

38.6%

8,100

13.8%

2,895

9824.7%

4822.3%

Certificate-estimated energy costs

Cost Type	Conwy	National Avg	Difference
Heating	£1,024/yr	£782/yr	▲ £242
Hot water	£196/yr	£184/yr	▲ £12
Lighting	£102/yr	£95/yr	▲ £7
Total	£1,321/yr	£1,061/yr	▲ £260

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

11,58055.2%

Flat

5,40125.7%

Bungalow

3,59917.2%

Maisonette

3991.9%

Park home

60.0%

Main heating fuel

Mains gas

15,53774.1%

Electric

3,09414.8%

Oil

1,0074.8%

LPG

9434.5%

Other

3801.8%

Carbon emissions and improvement potential

4.1 t

current annual CO₂ estimate

2.1 t

potential annual estimate

90 m²

average floor area

When the represented homes were built

Pre-1900

18%

1900–1929

16%

1930–1949

11%

1950–1966

11%

1967–1975

11%

1976–1982

1983–1990

1991–1995

1996–2002

2003–2006

2007–2011

2012+

Average EPC score over time

2020: 62
2021: 61
2022: 63
2023: 64
2024: 64
2025: 66

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.