When it comes to energy performance, LL63 in Isle of Anglesey manages an average of 49 out of 100, placing it below the national average. Compared to the national average of 67, that puts LL63 below the norm for England and Wales. The most common rating band is E, with 5.5% of homes rated A or B and 36.9% in the C or D bands. Meanwhile, 28.5% 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.

The area is characterised by houses. Around 52% of properties are owner-occupied , while 25% are privately rented and 23% are social housing. 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 49 to 82 — a 33-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 LL63 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.