Looking at the energy data for B21, this Birmingham district scores an average of 61 out of 100, placing it below the national average. Compared to the national average of 67, that puts B21 below the norm for England and Wales. The most common rating band is D, with 2.3% of homes rated A or B and 72.6% in the C or D bands. Meanwhile, 3.2% of homes sit in the F or G bands — the least efficient categories. In practical terms, a rating of D means many homes here lose more heat than average — potentially adding £200-400 per year to energy bills compared to a C-rated home.

The area is characterised by houses. Around 43% of properties are owner-occupied , while 28% are privately rented and 29% are social housing. Gas central heating is the main fuel source for 94% 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 61 to 80 — a 19-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 B21 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.