Ireland moved to a simplified A0 to G scale on 24 May 2026. Pick your current rating, or enter the figure from your cert, and see exactly where you now stand.
A new assessment puts your building on the new scale with the full certificate detail buyers, tenants and lenders now expect.
The new scale did not re-measure any building. It merged the old sub-categories into single letters: every A1, A2 and A3 is now an A, every B1, B2 and B3 is a B, and so on down to G, which is unchanged. The one genuinely new category is A0, reserved for zero-emission buildings: very high performance with no fossil fuels used on site. No existing building moves to A0 without meeting that test.
For homes, the underlying numbers behind each band are unchanged, so the figure printed on your cert maps directly: an A rating on the new scale starts at 75 kWh/m²/yr, exactly where A3 began. For commercial buildings, the new regulations also set primary energy thresholds by building type for certificates issued from 24 May 2026, which is why we label commercial conversions as indicative: the letter mapping is exact, but a new assessment under the updated methodology is the only way to get a definitive new-scale figure.
Your existing certificate remains fully valid for ten years from issue either way. The detail is in our guides: the new BER scale explained and is my cert still valid?
Because the market has already switched. Every BER published from 24 May 2026 uses the new scale, so buyers, tenants, lenders and agents are reading ratings in the new format. Knowing how your building presents on the scale everyone now uses is the first step in deciding whether a fresh certificate is worth it before your next sale, letting or lease event.
Fast commercial BER assessments nationwide by SEAI-registered assessors. Firm price from one short form.
Callback with your quote within 24 hours
We'll call you back with your free quote within 24 hours.
Urgent? info@commercialber.ie