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Original research

UK EPC Data by Local Authority

4,415,986 energy certificates lodged across 319 local authorities in England and Wales, analysed and published in full.

Data to 30 June 2026 Open Government Licence Free to cite
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Most published EPC analysis stops at the national headline. We process the quarterly local-authority tables so you can see the picture where you actually live, and we publish the derived dataset so anyone can check the working or reuse it.

4.42M
Certificates in the current window
43.0%
Lodged below band C
£944
Average modelled heating cost
319
Local authorities covered

The national picture

A 0.4% B 5.0% C 51.6% D 34.5% E 6.6% F 1.5% G 0.5%

Across England and Wales, 43.0% of certificates lodged for existing homes between 2023 Q3 and 2026 Q2 fell below band C. Bands F and G, the worst two, account for 2.0%. Average modelled energy use is 201 kWh per square metre per year.

The spread between places is far wider than the national average suggests. North Norfolk sits at 63.6% below C. Tower Hamlets sits at 18.9%. That is a gap of 44.7 percentage points between two places in the same country under the same proposed 2030 deadline.

The research

EPC ratings by local authorityThe full sortable table. Every authority, every band, with a CSV download. Which areas are furthest from EPC CRanked worst to best against the proposed 2030 standard. Where homes cost most to heatModelled heating cost per dwelling, from £469 to £1448. Where retrofit is actually happeningHow the mix of certificates has shifted since 2015, and what that reveals.

Area deep-dives

Cornwall57.1% below band C · £1103 modelled heating costNorth Yorkshire54.3% below band C · £1316 modelled heating costCounty Durham37.0% below band C · £1037 modelled heating costBradford46.6% below band C · £1027 modelled heating costCardiff36.1% below band C · £777 modelled heating cost

How to read these numbers

  • These are certificates, not homes. Epc certificates lodged for existing domestic properties (not deduplicated housing stock). A property assessed twice appears twice, so our percentages are not directly comparable with stock-based estimates such as the English Housing Survey, or with sources that deduplicate to one certificate per address.
  • Recent window: 2023/3 to 2026/2 (the last twelve quarters). We use this rather than the full 2008–2026 record because assessment methodology and the mix of properties being certified have both changed a great deal since 2008.
  • Costs are modelled, not billed. The heating, lighting and hot water figures are the modelled costs printed on the certificate under the SAP assumptions in force when it was lodged. They are useful for comparing areas with each other. They are not anyone's actual bill and they are not current Ofgem prices.
  • Authorities with fewer than 400 banded certificates in the window are excluded, which leaves 319 of them.
  • The EPC C standard referred to throughout is a government proposal for the private rented sector from 1 October 2030. It requires legislation that has not yet been passed. The minimum standard in force today is band E.

Use this data

The processed dataset is published for reuse. Journalists, councils, researchers and installers are all welcome to it. We ask only for attribution and a link.

If your home is one of the 43% below band C, here is how to get a D to a C, cheapest measure first.

Download CSVDownload JSON

For editors and researchers

“Across England and Wales, 43.0% of energy certificates lodged for existing homes in the last three years fell below band C, the standard the government has proposed for rented homes from 2030. The national figure hides an enormous local spread, from 18.9% in Tower Hamlets to 63.6% in North Norfolk.”

BetterHomeEnergy Research Team. Free to quote with attribution and a link to this page.

  • 4,415,986 certificates analysed across 319 local authorities
  • 43.0% lodged below band C; 2.0% in the worst two bands, F and G
  • Average modelled heating cost £944 per dwelling per year
  • Widest local gap: North Norfolk 63.6% versus Tower Hamlets 18.9%

Underlying figures: MHCLG EPC live tables, Open Government Licence v3.0, data to 30 June 2026. Our processed dataset: CSV download · JSON. Media contact: contact page.

Sources. Ministry of Housing, Communities and Local Government, Live tables on Energy Performance of Buildings Certificates, tables EB1 and D3, data to 30 June 2026 (accessed August 2026). Contains public sector information licensed under the Open Government Licence v3.0. Processing and all derived figures by BetterHomeEnergy. Editorial policy. Last updated 2026-08-14.