About the data

The Street Heat League uses domestic Energy Performance Certificates (EPCs) for England and Wales, published by the Ministry of Housing, Communities and Local Government under the Open Government Licence v3.0.

How we work it out

1. We take the most recent certificate for each home.
2. We group homes by street name and postcode district.
3. We leave out any street with fewer than 5 homes with an EPC.
4. Each street's score is the median (middle) EPC rating of its homes, from 1 to 100.
5. Streets are ranked within their council area. Rank 1 is the warmest.

Limits

• Not every home has an EPC, and some certificates are over ten years old.
• An EPC is a standard estimate, not a measurement of your actual bills.
• Street names are read from addresses by a computer, so a few may be grouped oddly.
• We never show single homes, only street averages.

Data built on 2026-11-05 from 20,381,525 homes.