Do I need a BER after the works?

Yes. Every grant claim needs a BER after the works, done by a registered BER assessor. SEAI pays a €50 BER grant on your first application only.

SEAI’s rule, in its own words

Every applicant needs a BER after the works.
“All grant applicants must carry out a post-works BER assessment” SEAI: Attic insulation grant, read 13 Jul 2026
It has to be done by a registered BER assessor.
“It must be carried out by a registered SEAI BER Assessor.” SEAI: Attic insulation grant, read 13 Jul 2026
The €50 BER grant is paid on your first application only.
“there is a €50 BER grant available which will only be paid to you on your first grant application” SEAI: Individual grants: Homeowner Application Guide, read 25 Sept 2026

Each application needs its own BER, so doing jobs one at a time means paying for more of them.

Each quote links to the SEAI page it is from, read on 26 September 2026. Whether a grant is paid is SEAI’s decision on your application.