BER Reassessment in Ireland — At Year 10, What It Costs, and What the Assessor Finds
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BER reassessment: at year 10, €200–€400. The assessor compares actual to design. Catches performance drift on airtightness or insulation.
BER reassessment: at year 10, €200–€400. The assessor compares actual to design. Catches performance drift on airtightness or insulation. Most year-10 reassessments show a small drop in BER (A1 to A2, or A2 to A3). Caused by insulation settlement, airtightness degradation, or heating system wear. The reassessment is useful for: planning retrofit, comparing to neighbours, validating the original design. The original BER certificate is valid for 10 years; the reassessment is a new certificate. Most Irish self-builders do the reassessment at year 10 to compare actual to design and to plan any retrofit (insulation top-up, heat pump upgrade, solar PV).
TL;DR
BER reassessment: at year 10, €200–€400. The assessor compares actual to design. Catches performance drift on airtightness or insulation.
Most year-10 reassessments show a small drop in BER (A1 to A2, or A2 to A3). Caused by insulation settlement, airtightness degradation, or heating system wear.
The reassessment is useful for: planning retrofit, comparing to neighbours, validating the original design.
When this matters most
You're approaching year 10 and considering a BER reassessment.
When this doesn't apply
You're not at year 10.
Frequently asked questions
When should I get a BER reassessment?
At year 10, or when the original BER certificate expires. €200–€400. Useful for planning retrofit, comparing to neighbours, validating the original design.
What does the BER reassessment find?
Performance drift: insulation settlement, airtightness degradation, heating system wear. Most year-10 reassessments show a small drop in BER (A1 to A2, or A2 to A3).
Is the original BER certificate still valid?
Yes, for 10 years from issue. The reassessment at year 10 is a new certificate, useful for planning retrofit.
Sources
SEAI, BER Assessors. https://www.seai.ie/
Frequently asked questions
When should I get a BER reassessment?
At year 10, or when the original BER certificate expires. €200–€400. Useful for planning retrofit, comparing to neighbours, validating the original design.
What does the BER reassessment find?
Performance drift: insulation settlement, airtightness degradation, heating system wear. Most year-10 reassessments show a small drop in BER (A1 to A2, or A2 to A3).
Is the original BER certificate still valid?
Yes, for 10 years from issue. The reassessment at year 10 is a new certificate, useful for planning retrofit.
When this matters most
You're approaching year 10 and considering a BER reassessment.
When this doesn't apply
You're not at year 10.
Where to go next
Next decision
The next step in your build sequence.