Free mapCertificates lodged to 13 October 202671 neighbourhoods

EPC ratings map of Gwynedd

Gwynedd has 41,134 homes with an energy performance certificate. 71% of them are rated D or below on their latest certificate, against 55% across Wales. Of the 6,185 homes last certified as private lets, 76% 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 Gwynedd

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 Gwynedd.

EPC bands in Gwynedd

  1. Band A628 (2%)
  2. Band B2,205 (5%)
  3. Band C9,029 (22%)
  4. Band D13,311 (32%)
  5. Band E9,048 (22%)
  6. Band F4,640 (11%)
  7. Band G2,273 (6%)

41,134 homes, each counted once by its latest certificate. 71% are rated D or below, against 55% across Wales.

Private lets in Gwynedd

  • 6,185homes last certified as private lets
  • 76%of them rated D or below (62% across Wales)
  • 10%rated F or G, below today's minimum of E unless exempt
  • 18%with a certificate more than ten years old

Gwynedd ranks 3 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 Gwynedd homes rated D or below, 81% 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. Gwynedd 005A, mostly in Deiniolen ward: 92% of 739 homes
  2. Gwynedd 005C, mostly in Penisa'r-waun ward: 91% of 436 homes
  3. Gwynedd 017C, mostly in Arthog a Llangelynnin ward: 91% of 802 homes
  4. Gwynedd 016C, mostly in Brithdir and Llanfachreth/Ganllwyd/Llanelltyd ward: 91% of 452 homes
  5. Gwynedd 012A, mostly in Efailnewydd a Buan ward: 90% of 345 homes

Neighbourhoods with the fewest homes rated D or below

  1. Gwynedd 002E, mostly in Y Faenol ward: 28% of 553 homes
  2. Gwynedd 001D, mostly in Dwyrain Bangor ward: 41% of 397 homes
  3. Gwynedd 002A, mostly in Dewi ward: 43% of 652 homes
  4. Gwynedd 006D, mostly in Hendre ward: 45% of 395 homes
  5. Gwynedd 002D, mostly in Dwyrain Bangor ward: 47% of 378 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 Gwynedd

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.