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CSO statistical release, , 11am

Non-Domestic Building Energy Ratings

Quarter 2 2019

Table A: Building Energy Ratings by Period of Construction (Non-Domestic)
% of row
Period of constructionEnergy rating 
ABCDEFGTotal
1900-19770729261691314,407
1978-199901136231271012,817
2000-200401644198487,759
2005-20091193716751612,802
2010-201482929167371,946
2015-2019223518942101,419

22% of non-domestic construction between 2015 and 2019 was rated "A"

Figure 1: Building Energy Ratings by Period of Construction (Non-Domestic) 1900-2019
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Building Energy Ratings (BER) audits were conducted for 1,419 non-domestic buildings constructed between 2015 and 2019 (see Table A). Over one fifth (22%) of these buildings received an “A” rating compared with 8% of non-domestic buildings constructed during 2010 to 2014 (see Figure 1). In contrast, 97% of domestic dwellings constructed between 2015-2019 received an "A" rating (separate CSO release). 

There were 57,028 non-domestic BER audits conducted in the period 2009 to 2019 (see Table 1). The profile of non-domestic BER audits conducted since 2009 was 1% awarded an "A" rating, 14% a "B" rating, and 34% with a “C” rating (see Table 3).

The most energy efficient building types audited during 2009-2019 were Schools and colleges with 24% awarded an “A” rating (see Table 3). The second most energy efficient buildings were Nursing residential homes and hostels with 7% rated “A”. The least energy efficient building types, defined by a “G” rating, were Workshops and maintenance depots (22%) followed by Other Buildings (20%) (see Figure 3).

The highest proportion of combined “A” and “B” ratings was in County Carlow, Kilkenny and Laois at 20% (see Table 4). Kilkenny had the highest proportion of “G” rated buildings at 17% (see Table 4).

In Dublin city, Dublin 15 had the highest proportion of combined “A” and “B” ratings at 25% followed by 16% for Dublin 11, Dublin 18 and Dublin 22 (see Table 5). The highest proportion of “G” ratings was 17% in Dublin 8 (see Table 5).

The average floor area of all audited non-domestic dwellings was 675 square metres (see Table 10). This average size varied from 3,390 square metres for hotels to 298 square metres for Restaurants and public houses.