Pulse Survey now running Five years on, we're measuring the lasting impact of COVID-19 on our lives in our latest short Pulse Survey. CSO Pulse Surveys are anonymous and open to all. #CSOTakePart
The number of audits reported in April to June (Q2) 2024 was 9% higher than in Q2 2023 (See Table A and Table 1).
Dwellings built between 2015-2019 and 2020-2024 were substantially more energy efficient than those from earlier periods, with 95% and 99% respectively receiving an A rating (See Figure 4 and Table 2).
Electricity was the main space heating fuel for 91% of audited dwellings constructed between 2020-2024 (See Figure 1 and Table 9).
The highest proportions of A rated dwellings were in Kildare (26%), Meath (24%), and Dublin County (23%), while the lowest were in Leitrim and Cork City (both 4%) (See Table 4).
In the Dublin postal districts, the highest proportions of A ratings were in Dublin 18 (38%), Dublin 20 (29%), and Dublin 13 (27%) (See Table 5).
| Table A: Number of Domestic BER certificates | ||||||
| number | ||||||
| Period | 2020 | 2021 | 2022 | 2023 | 2024 | % change 2024/2023 |
| April | 1,997 | 6,276 | 8,394 | 10,426 | 12,600 | 21% |
| May | 2,453 | 7,790 | 10,510 | 12,984 | 14,035 | 8% |
| June | 5,799 | 7,936 | 11,256 | 12,402 | 12,453 | 0% |
| Quarter 2 | 10,249 | 22,002 | 30,160 | 35,812 | 39,088 | 9% |
| Mains Gas | Heating Oil | Electricity | |
| 2000-2004 | 40 | 36 | 20 |
| 2005-2009 | 44 | 32 | 19 |
| 2010-2014 | 43 | 33 | 20 |
| 2015-2019 | 45 | 5 | 50 |
| 2020-2024 | 9 | 0 | 91 |
| Earliest | Latest | |
| A | 2 | 8 |
| B1 | 1 | 5 |
| B2 | 3 | 8 |
| B3 | 6 | 15 |
| C1 | 9 | 15 |
| C2 | 11 | 13 |
| C3 | 12 | 11 |
| D1 | 13 | 9 |
| D2 | 12 | 7 |
| E1 | 8 | 3 |
| E2 | 7 | 2 |
| F | 7 | 2 |
| G | 9 | 2 |
| National Data | BER Database | |
| A | 10 | 14 |
| B1 | 2 | 2 |
| B2 | 4 | 4 |
| B3 | 8 | 8 |
| C1 | 10 | 11 |
| C2 | 11 | 12 |
| C3 | 11 | 11 |
| D1 | 11 | 10 |
| D2 | 10 | 9 |
| E1 | 6 | 5 |
| E2 | 5 | 4 |
| F | 5 | 4 |
| G | 8 | 6 |
1Dwellings with BERs have been weighted using 2016 Census of Population data to estimate a BER profile for All Dwellings at National level (See Background Notes).
| A | B | C | D | E | F-G | |
| 1700-1977 | 2 | 7 | 20 | 23 | 18 | 29 |
| 1978-1999 | 2 | 12 | 41 | 31 | 10 | 5 |
| 2000-2004 | 2 | 17 | 58 | 18 | 4 | 1 |
| 2005-2009 | 3 | 40 | 47 | 8 | 2 | 0 |
| 2010-2014 | 36 | 56 | 7 | 1 | 0 | 0 |
| 2015-2019 | 95 | 4 | 0 | 0 | 0 | 0 |
| 2020-2024 | 99 | 1 | 1 | 0 | 0 | 0 |
Learn about our data and confidentiality safeguards, and the steps we take to produce statistics that can be trusted by all.
Statistician's Comment
The Central Statistics Office (CSO) has today (17 July 2024) released Domestic Building Energy Ratings for Quarter 2 (Q2) 2024.
Commenting on the release, Kevin Hunt, Statistician in the Climate and Energy Division, said: "The number of domestic Building Energy Rating (BER) audits reported in April to June (Q2) 2024 was 39,088. This was 9% higher than the 35,812 audits reported in Q2 2023. In total, 1.5 million BER audits were published from 2009-2024 (See Table A and Table 1).
Of the 1.2 million unique dwellings to receive an audit since 2009, 14% received an A rating in their most recent audit, 15% a B rating, and 33% a C rating (See Table 2).
Period of Construction
A ratings were given to 99% of audited dwellings built between 2020-2024 and 95% of those built between 2015-2019. In comparison, 36% of audited dwellings built between 2010-2014 received an A rating, and just 3% of those from 2005-2009 (See Figure 4 and Table 2).
Main Space Heating Fuel
Electricity was the main space heating fuel for 91% of audited dwellings constructed between 2020-2024. This is substantially higher than the proportion among dwellings constructed between 2015-2019 (50%) and 2010-2014 (20%). Mains gas was the main space heating fuel for 9% of audited dwellings built between 2020-2024, compared with 45% of those built between 2015-2019. Heating oil was the main space heating fuel for 5% of dwellings built between 2015-2019 and 0% of dwellings built between 2020-2024, compared with the overall proportion of 35% (See Figure 1 and Table 9).
Local Area Analysis
By county, the highest proportions of A rated dwellings were in Kildare (26%), Meath (24%), and Dublin County (23%). Leitrim and Cork City had the lowest proportion of A ratings at 4% each. Cork City had the highest average dwelling age, at 46 years (See Table 4).
The highest proportions of G rated dwellings were in counties Roscommon (12%), Leitrim (11%), and Tipperary (10%) (See Table 4).
Among Dublin postal districts, the highest proportions of A ratings were in Dublin 18 (38%), Dublin 20 (29%), and Dublin 13 (27%). The highest proportions of G ratings were in Dublin 06 (14%) and Dublin 07 (13%). The highest average dwelling age was 62 years in Dublin 06, and the lowest was 15 years in Dublin 18 (See Table 5).
Floor Area
The average floor area for all dwellings with a BER audit was 116 square metres. The dwelling type with the largest average floor area was detached houses (165 square metres), and the smallest was basement dwellings (60 square metres) (See Table 12).
Dwellings with Multiple BER Audits
Some dwellings have had more than one BER audit conducted. Of these, 11% received an A or B rating in their earliest assessment, while 36% received an A or B rating in their most recent assessment. In contrast, 16% of dwellings with multiple audits were rated F or G in their first assessment, compared with 4% of the final ratings (See Table 15)."