BER Reassessment in Ireland — At Year 10, What It Costs, and What the Assessor Finds

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/