The BER rating must appear in the advertisement for a home for sale, but the letter alone tells you little. The certificate number behind it unlocks the detail. Here is how to find it, look it up and read it before you bid.

Where do I find the BER certificate number?

Look on the listing first, then ask the agent or seller. The number is on the BER certificate itself, which the seller should have in their paperwork. If it is missing, the MPRN (the meter point reference number printed on an electricity bill) can also be used to search the register.

How do I look it up on the SEAI register?

SEAI runs the National BER Register. Enter the certificate number or the MPRN and it returns the rating for that home. Check that the rating matches the one in the advertisement, and note the date of the assessment. A certificate is normally valid for ten years, unless the home has since been changed in a way that affects its rating. Our BER rating check explains what each grade means for a house like the one you are viewing.

What should I read besides the letter?

  • The advisory report. It lists the improvements an assessor recommends, such as insulation or a heating upgrade, which is a ready-made list of work to price.
  • The assessment date. An older certificate may not reflect upgrades done since, so ask whether work has been carried out.
  • The type of heating. It drives running costs more than the headline letter suggests.

Checking BER alongside everything else

Energy is one record among several for an address. A PropertyPack report reads BER data for the Eircode you enter next to flood, radon and the other checks. It sits alongside a solicitor and a surveyor, not in place of them.

Try it on a house you are viewing

Start with the Eircode property check, or open the sample report to see a finished one.

About this article

Written by the PropertyPack.ie team and published 2 November 2026. Figures render directly from the official datasets behind our reports, so they update when the underlying record does. General information for Irish home buyers, not legal, financial or tax advice.