A BER certificate is valid for ten years from the date it is issued, provided the property has not been materially altered in the meantime. That second condition catches people out far more often than the ten years does.
Validity
The expiry date is printed on the certificate and shown on the national register. Within that period you can use the same BER for a sale or a letting without reassessment, as long as nothing material has changed about the building. A material change means work that affects energy performance:
Redecorating, a new kitchen or a new bathroom do not count. None of them change how much energy the building needs.

Worth knowing
A certificate can be perfectly valid and still be costing you money. These are the situations where a reassessment pays for itself.
The old certificate still shows the old rating, and the rating is what appears in the advertisement. If you have insulated, replaced windows or changed the heating system, a new assessment publishes the improvement.
Lenders offering rates tied to energy performance work from the current published rating, not from the work you tell them you have done.
Grant schemes typically require a BER both before and after the works, so an old certificate will not satisfy the post-works requirement.
If the first assessment was carried out without documentation, it may have relied on conservative default values. A reassessment with the paperwork to hand can produce a fairer rating. What to have ready.
A certificate that runs out part way through a sale creates an avoidable delay. If you are within a few months of the expiry date and about to list, renew first.
Next: What a BER certificate is · What a reassessment costs · All BER guides















On the certificate itself, and on the public register listing for the property. How to search the register.
Yes. The certificate belongs to the building rather than the owner, and it stays valid for the remainder of its term.
No. There is no renewal or extension process. Once it expires, a new assessment is required.
It drops out of the active search once it expires, so the property shows as having no valid rating.
If the work was material, the existing certificate no longer reflects the property and a new assessment is required. In most cases you would want one anyway, because the improved rating is what buyers see.
If your certificate is close to expiry, or you have upgraded the property since it was issued, Tom, a BER assessor in Cork, can survey and publish an up to date rating. Send the address and property type for a fixed quote.