UK EPC Map 2026: Energy Performance by Local Authority

The choropleth above shades every local authority in England and Wales by the percentage of its properties rated below EPC band C. Darker red means a larger share of homes fall into bands D to G, the ratings that will not meet the proposed 2030 minimum standard for rental properties. Greener shading means most homes are already at band C or above.

Hover over any authority for a headline figure, then click to open its full rating distribution, worst-performing property types, and estimated upgrade cost. The ranked table beneath the map lists all 318 authorities and can be sorted by below-C percentage, property count, or total upgrade cost, so you can find exactly where a given town or borough sits. For a single address rather than a whole authority, use the postcode EPC lookup.

Across all 318 local authorities, our analysis of 27.6 million certificates covering 19.7 million homes shows 49.6% of homes sit below band C. That national figure hides a wide spread between areas, and the differences are not random.

Two patterns stand out. First, there is a broad north-south and urban-rural split: authorities with older, denser period housing and more off-gas-grid homes tend to carry a higher share of below-C properties, while areas dominated by post-war and modern estates score better. Second, older housing stock consistently drags an area down the scale. Wherever Victorian and pre-1919 solid-wall homes make up a large slice of the stock, the below-C percentage climbs, because those buildings are the hardest and most expensive to bring up to band C.

You can see this at property level too. A Victorian terrace typically needs solid-wall insulation, glazing, and heating upgrades to reach band C, which is why authorities rich in period housing dominate the worst-performing end of the table.

Those are also the areas where the cost of compliance bites hardest. If your property sits in one of them, it is worth checking the grant funding open to landlords before assuming the whole bill falls to you.

The map is really a map of building age and fabric. EPC bands are driven by how well a property retains heat and how efficiently it is heated, and both are largely set by when and how a home was built. Solid-wall construction, single glazing, and older gas or electric heating all pull a rating down; cavity walls, modern insulation, and efficient heating pull it up.

Because housing age clusters geographically, so do EPC ratings. Market towns and inner suburbs with rows of period terraces score worse on average than newer commuter estates a few miles away. Tenure matters as well: the private rented sector has its own compliance profile, which we break down in the rental vs owner-occupied EPC gap analysis. For a political-boundary view of the same data, see the constituency EPC rankings. When you are ready to budget the work, our upgrade cost guides break down what each improvement typically costs.