Data stories · 4 stories · Each with its data · SEAI BER file 8 Sep 2026
What 1,077,114 BER certificates say about Irish homes
We read every BER certificate SEAI publishes for an existing home. Four findings so far: only 1 in 12 homes sold or let is B2 or better. 46.6% are already under the heat pump line. And in our model the work to reach a B pays for itself fastest from a G. Each story has its chart and its data to download.
Terrace houses in High Street, from Summerhill South, Cork · David Hawgood · CC BY-SA 2.0
8.1%
B2 or better, homes sold or let
SEAI BER file 26 Sep 2026 · 265,008 certificates
BER assessment46.6%
Under the heat pump line
SEAI BER file 8 Sep 2026 · 161,297 certificates
BER assessment14×
The gap between Dublin 18 and Dublin 10
B2 or better: 28.7% against 2.1% · homes sold or let
BER assessmentUpdated · BER file · research file 26 Sep 2026 · model 5 Oct 2026 · How we know · Corrections
Where this sits · the heat chain
A BER is a standard calculation across all four stages. Your bills also depend on how you live.
- Fabricwalls, roof, floor, windows
- Airdraughts and ventilation
- Heatheat pump or boiler, radiators, controls
- Usebills, comfort, the BER
- The idea behind itA BER is a standard calculation
- You are hereData stories
- Next questionWhere does each number come from?
Four stories, each with its chart and data
The finding, its number and where it comes from. Every story's figures download as a spreadsheet. BER assessment
- €123A year, typical oil-heated semi-D · BER file 8 Sep 2026
Budget 2027 · home heating oil
Budget 2027's carbon tax cut on home heating oil is worth about €123 a year to a typical oil-heated semi-D
€197 for a detached house, more the lower the BER. By house type, BER letter and county, and against a heat pump after grants.
Twin gable bungalow to east of Doon village · Neil Theasby · CC BY-SA 2.0
- 8.1%B2 or better, homes sold or let · BER file 26 Sep 2026
BER ratings · by county and Dublin district
Only 1 in 12 homes sold or let in Ireland is B2 or better
Where the home is changes that a lot: Dublin 18 is 14 times Dublin 10. Every county and Dublin postal district, ranked.
Landscaped road island in the Old Town housing estate, Letterkenny · Humphrey Bolton · CC BY-SA 2.0
- 46.6%Under the heat pump line · BER file 8 Sep 2026
Heat pumps · the heat loss line
Almost half of homes sold or let are already under the heat pump line
For 1 in 10, one job stands between the home and the line. By county, and by house type and age.
- 4 yearsFrom a G to a B, pays for itself · Our model, built 5 Oct 2026
Payback · the B league
From a G, the work to reach a B pays for itself fastest: about 4 years
From a D it takes about 8 years, the slowest. What a full upgrade to a B costs the twenty commonest homes.
Semi-detached cottage in Geashill, County Offaly · A.-K. D. · CC0 1.0 (public domain dedication)
Coming next
What we're working on. No links yet: each needs its checks before it publishes.
- The new BER scale of 24 May 2026 made 12.9% of homes sold or let a G (SEAI BER file 8 Sep 2026): what moved, and why.
- How much of SEAI’s grant work is now solar panels, year by year, from the BERs done after grant-aided works.
- Whether a better BER goes with a higher sale price, and how far a Dublin-heavy sample lets anyone say so.
The data, and how to cite it
Cite as: FixMyBER analysis of the SEAI BER Research Tool (CC BY 4.0), fixmyber.ie/stories/, read 5 Oct 2026.
Every figure here is free to quote and reuse with a link, under the same licence as SEAI’s file. The full list of numbers, each with its period, source and date, is on the statistics sheet. Questions about the method: info@usecara.ie.
See your grants and what you’d pay
Four questions about your home, then your numbers. Get quotes from registered contractors if you want them.
Updated · BER file · research file 26 Sep 2026 · How we know · Corrections