Skip to content
FixMyBER

Home energy upgrades in Cork

SEAI’s grants are the same everywhere. The homes are not. Here is what 27,504 published BERs say about homes in Cork, who SEAI registers to do the work here, and where to start.

Homes in Cork, from their BERs

Attic short of the grant standard
80%
Heat loss 2.3 or lower
42%
Commonest heating
gas, 43%
Commonest walls
filled cavity, 50%

A heat loss indicator of 2.3 or lower is what lets a home built before 2007 skip the technical assessment for a heat pump grant. Check yours

Published BERs for homes in Cork by type and age
HomeBERsWalls, most oftenAttic shortHeat loss ≤ 2.3
Detached house, before 19402,160solid stone or brick 82%97%3%
Detached house, 1940–19691,115solid stone or brick 39%90%4%
Detached house, 1970–19891,802filled cavity 62%80%8%
Detached house, 1990–20042,020filled cavity 90%88%35%
Detached house, 2005–20101,073filled cavity 75%89%85%
Detached house, 2011 on223filled cavity 86%74%96%
Semi-detached house, before 19401,265solid stone or brick 86%96%6%
Semi-detached house, 1940–19691,441solid stone or brick 50%92%6%
Semi-detached house, 1970–19891,299filled cavity 51%84%15%
Semi-detached house, 1990–20042,491filled cavity 84%85%53%
Semi-detached house, 2005–20101,759filled cavity 56%84%95%
Mid-terrace house, before 19402,086solid stone or brick 76%97%10%
Mid-terrace house, 1940–1969769solid stone or brick 61%93%10%
Mid-terrace house, 1970–1989581filled cavity 53%84%44%
Mid-terrace house, 1990–2004843filled cavity 83%90%93%
Mid-terrace house, 2005–2010708filled cavity 65%86%99%
Apartment, before 1940952solid stone or brick 87%56%25%
Apartment, 1970–1989182filled cavity 46%46%44%
Apartment, 1990–20042,582filled cavity 55%45%80%
Apartment, 2005–20102,153filled cavity 76%49%91%

Existing homes assessed since 2019, in groups of at least 150 BERs. SEAI BER Research Tool, file of 8 September 2026. A pattern across homes, not a fact about any one.

Who SEAI registers to work in Cork

1121 companies on SEAI’s registers serve Cork; 23 are One Stop Shops. Registration is a fact about paperwork; SEAI does not endorse their work, and neither do we.

  • Attic insulation341
  • Cavity wall insulation86
  • Internal wall insulation321
  • External wall insulation130
  • Windows and doors274
  • Heat pumps277
  • Solar panels318
  • Heating controls267
  • Solar hot water116

The companies in Cork, with their websites

SEAI grant figures as read on 26 September 2026. They are the same in every county. Every grant, and what it pays · What order should a retrofit go in?