EPC.Report
D
CF47 Merthyr Tydfil
Merthyr Tydfil Rating D Score: 66 / 100

CF47 is around the national average for energy efficiency.

Data from 7,543 property assessments shows CF47 averaging 66 out of 100, placing it around the national average. For reference, the England and Wales average is 67 — so CF47 is around that benchmark. The most common rating band is C, with 5.3% of homes rated A or B and 81.7% in the C or D bands. Meanwhile, 1.9% of homes sit in the F or G bands — the least efficient categories. In practical terms, a C rating suggests reasonably efficient homes, though there is still room for improvement on heating and insulation.

Walk through CF47 and you will mostly see houses. Around 48% of properties are owner-occupied and 37% are social housing. Gas central heating is the main fuel source for 97% of homes, which is typical for urban areas across England.

There is genuine room for improvement here. If every recommended upgrade were carried out, the average score could climb from 66 to 82 — a 16-point jump that would lift the typical rating to B. That is a substantial gain, suggesting many homes are missing basic efficiency measures. If you live in CF47 and want to reduce your energy bills, start with our guide to loft insulation — it is one of the most cost-effective upgrades you can make.

EPC Rating Distribution

A
21 (0.3%)
B
377 (5.0%)
C
3,305 (43.8%)
D
2,858 (37.9%)
E
835 (11.1%)
F
119 (1.6%)
G
28 (0.4%)

Energy Efficiency Score

66
CF47 avg
67
National avg
-1 points vs national average

Potential score if all improvements made: 82 (rating B)

Recommended Improvements

Government funding may be available for some of these improvements. Check grants →

More data — property types, tenure & fuel

Property Types

6,286
House
309
Bungalow
834
Flat
114
Maisonette

Tenure

3,383
Owner-occupied
1,049
Private rented
2,595
Social rented

Main Fuel Types

7,352
gas
121
electric
3
oil
67
other

Frequently asked questions

What is the average EPC rating in CF47?

Homes in CF47 have an average EPC rating of D, scoring 66 out of 100 for energy efficiency. That figure comes from 7,543 certificates issued across the district.

This is broadly in line with the national average of 67 — neither particularly efficient nor particularly wasteful. A D rating typically means higher-than-necessary heating bills, especially in older properties without adequate insulation.

What percentage of homes in CF47 are rated F or G?

1.9% of homes in CF47 fall into the F or G bands — the lowest energy efficiency ratings. Nationally, the figure is 2.9%.

This is actually better than the national picture, suggesting the housing stock in CF47 is in relatively good shape — though any home rated F or G would still benefit enormously from basic upgrades. Landlords should note that F and G rated properties cannot legally be rented out under current MEES rules.

See all EPC data for Merthyr Tydfil →