BER Building Energy Rating

There were 20,995 Building Energy Rating (BER) audits reported in quarter one 2020 compared with 19,617 in January to March 2019 (see Table 1). This is an increase of 7% and could be due to factors such as an increase in new dwellings, updating of old BER certificates, and new renovation work.

Dwellings built in 2015-2020 were considerably more energy efficient than in earlier periods with 97% given an “A” rating compared with 35% in 2010-2014 and 1% in 2005-2009 (see Table A and Figure 1).

BER Building Energy RatingsDublin County had the highest combined “A” and “B” rating at 30% (see Table 4). Roscommon had the lowest proportion of combined “A” and “B” rating at 8%.

Dublin 18, with an average dwelling age of 18 years, had the highest proportion of combined “A” and “B” rating at 43% (see Table 5). The average age of dwellings in Dublin 15 that have had a BER audit done was 17 years, but the combined “A” and “B” rating was much lower at 30% than in Dublin 18. The highest proportion of combined “F” and “G” rating was 26% for Dublin 7.

Mains gas was the main space heating fuel used in 51% of the dwellings completed during 2015-2020 and with a BER audit. This was a substantial increase from 2000-2004 when 41% of dwellings with a BER audit used mains gas. There were contrasting trends for heating oil and electricity with 35% of 2000-2004 built dwellings using heating oil compared with 4% for dwellings built in 2015-2020.

For more details and to view tables visit Domestic Building Energy Ratings