BER certificates are valid for 10 years. If you have a BER Certificate and can't locate it, you can access your BER cert and advisory report on the SEAI national BER register using the BER number or the MPRN number for the property (found on your electricity bill) - and check if your BER is still valid.
Follow these steps to look up your existing BER rating:
If your BER certificate has expired or you need a new assessment, BerCert.com can get you the lowest price from local SEAI registered assessors near you.