EPC.Report
E
LL43 Dwyfor Meirionnydd
Gwynedd Rating E Score: 46 / 100

LL43 is below average for energy efficiency — most homes here have room to improve.

25.6% of homes are rated F or G — above the national average of 2.9%.

For the 156 homes assessed in LL43, the average energy score comes in at 46 out of 100, placing it below the national average. The national average is 67, which means LL43 performs below most areas. The most common rating band is E, with 1.9% of homes rated A or B and 34.0% in the C or D bands. Meanwhile, 25.6% of homes sit in the F or G bands — the least efficient categories. In practical terms, an E rating signals significant energy waste. In practical terms, households here could be spending £400-600 more per year on energy than they need to.

Bungalows make up the bulk of the housing in this district. Around 86% of properties are owner-occupied . A significant share of homes here rely on electric heating, which tends to be more expensive per unit of energy than gas.

There is genuine room for improvement here. If every recommended upgrade were carried out, the average score could climb from 46 to 77 — a 31-point jump that would lift the typical rating to C. That is a substantial gain, suggesting many homes are missing basic efficiency measures. If you live in LL43 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
1 (0.6%)
B
2 (1.3%)
C
10 (6.4%)
D
43 (27.6%)
E
60 (38.5%)
F
21 (13.5%)
G
19 (12.2%)

Energy Efficiency Score

46
LL43 avg
67
National avg
-21 points vs national average

Potential score if all improvements made: 77 (rating C)

Recommended Improvements

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

More data — property types, tenure & fuel

Property Types

31
House
116
Bungalow
2
Maisonette
7
Flat

Tenure

134
Owner-occupied
20
Private rented
1
Social rented

Main Fuel Types

33
gas
64
electric
55
oil
4
other

Frequently asked questions

What is the average EPC rating in LL43?

Homes in LL43 have an average EPC rating of E, scoring 46 out of 100 for energy efficiency. That figure comes from 156 certificates issued across the district.

That is below the national average of 67, which means there is real scope to improve energy efficiency here. An E rating suggests many homes here are losing significant amounts of heat — and money — through poor insulation or outdated heating systems.

What percentage of homes in LL43 are rated F or G?

25.6% of homes in LL43 fall into the F or G bands — the lowest energy efficiency ratings. Nationally, the figure is 2.9%.

That means LL43 has a higher-than-average proportion of poorly insulated homes. On the positive side, many of these properties may qualify for free improvements through government schemes like ECO4 or the Great British Insulation Scheme. Landlords should note that F and G rated properties cannot legally be rented out under current MEES rules.

See all EPC data for Gwynedd →