The paperwork depends on whether you apply through an SEAI One Stop Shop, an individual energy-upgrade grant, or another scheme. You may be asked for your property address and MPRN, proof of identity or ownership, a pre-works BER, contractor quotations, signed application forms, and bank details. Keep invoices, receipts and any post-works BER or completion documents, as these may be needed before payment is processed. Check the current requirements on SEAI’s official website or with your registered contractor, as SEAI makes the final decision based on your circumstances.