Free mapCertificates lodged to 13 October 2026218 neighbourhoods

EPC ratings map of Cardiff

Cardiff has 126,584 homes with an energy performance certificate. 45% of them are rated D or below on their latest certificate, against 55% across Wales. Of the 30,996 homes last certified as private lets, 49% are rated D or below, short of the band C the government has announced for rented homes from 2030.

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Homes rated D or below
  1. 0
  2. 10
  3. 20
  4. 30
  5. 40
  6. 50
  7. 60
  8. 70
  9. 80
  10. 90
0%100%

Each shape is one small area (a 2021 Lower layer Super Output Area), shaded by the share of its homes whose latest certificate is band D or below. "Private lets" counts only homes whose latest certificate was lodged for a private let. Areas with fewer than 20 of them are left grey.

Check a rental in Cardiff

Select a neighbourhood on the map to check a rental there against the 2030 standard.

Or search a postcode to see a home's EPC, its MEES screen and other checks in Cardiff.

EPC bands in Cardiff

  1. Band A1,834 (1%)
  2. Band B16,421 (13%)
  3. Band C51,811 (41%)
  4. Band D44,373 (35%)
  5. Band E10,647 (8%)
  6. Band F1,196 (1%)
  7. Band G302 (<1%)

126,584 homes, each counted once by its latest certificate. 45% are rated D or below, against 55% across Wales.

Private lets in Cardiff

  • 30,996homes last certified as private lets
  • 49%of them rated D or below (62% across Wales)
  • 1%rated F or G, below today's minimum of E unless exempt
  • 16%with a certificate more than ten years old

Cardiff ranks 255 of 318 councils in England and Wales for the share of private lets rated D or below (1 is the highest share). See every council

Of the Cardiff homes rated D or below, 90% have a potential rating of C or better on their certificate: the assessor's view of what the recommended improvements would achieve. It doesn't say what they would cost for any one home.

Neighbourhoods with the most homes rated D or below

  1. Cardiff 012C, mostly in Rhiwbina ward: 84% of 477 homes
  2. Cardiff 029B, mostly in Penylan ward: 83% of 315 homes
  3. Cardiff 018D, mostly in Heath ward: 81% of 280 homes
  4. Cardiff 044E, mostly in Grangetown ward: 80% of 439 homes
  5. Cardiff 030A, mostly in Plasnewydd ward: 78% of 602 homes

Neighbourhoods with the fewest homes rated D or below

  1. Cardiff 040F, mostly in Canton ward: 1% of 791 homes
  2. Cardiff 005F, mostly in Llanishen ward: 3% of 682 homes
  3. Cardiff 013D, mostly in Trowbridge ward: 4% of 473 homes
  4. Cardiff 049F, mostly in Butetown ward: 4% of 2,693 homes
  5. Cardiff 003E, mostly in Pontprennau and Old St Mellons ward: 5% of 981 homes

How to read this map

  • An EPC rates a home from A (most efficient) to G. Each home counts once, by its latest certificate, however old. Homes that have never had a certificate aren't counted.
  • "Private let" means the latest certificate was lodged for a private letting. A home let since a sale certificate counts as not let, so the private-let count is a floor.
  • Below C is a position on today's certificates, not a verdict. The government has announced that privately rented homes must reach band C from 1 October 2030, subject to Parliament, and the standard is expected to use reformed EPC metrics, so a D today doesn't mean a home will fail.
  • A certificate lasts ten years. A home being let needs a valid one, so an expired certificate means a new assessment before the next let.

The announced EPC C 2030 policy, explained · MEES deadlines from 2026 to 2030 · Deprivation map of Cardiff

More council EPC maps

Sources

Contains public sector information licensed under the Open Government Licence v3.0. EPC address data was used only to place homes in areas: MHCLG has published the address data with the consent of Ordnance Survey and Royal Mail Group Limited, and none of it is shown here. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Contains OS data © Crown copyright and database right 2021. Contains Royal Mail data © Royal Mail copyright and database right 2026.