BER Certificates in Ireland: Everything You Need to Know in 2026

A Building Energy Rating (BER) certificate is a legal requirement when selling or renting a home in Ireland. Here's everything you need to know. What is a BER certificate? A BER certificate rates the energy efficiency of a property on a scale from A1 (most efficient) to G (least efficient). It's assessed by an SEAI-registered BER assessor who visits your home and measures insulation, heating systems, windows, and more. When do you need one? - When selling your home - When renting out a property - When applying for certain SEAI grants - When carrying out major renovations Cost in 2026: €150 – €300 depending on property size and location. Larger or older properties with complex layouts can reach the higher end. How long does it take? The assessment itself takes 1-2 hours. The certificate is usually issued within 24 hours. How to improve your BER rating: - Add attic insulation (the single biggest improvement) - Upgrade to a heat pump - Install double or triple glazing - Add cavity wall insulation - Replace an old boiler SEAI grants: The SEAI Warmer Homes Scheme and Better Energy Homes scheme offer significant grants for energy upgrades. A higher BER also increases your property value and reduces energy bills. Source: SEAI-registered assessor rates. Current grant details at seai.ie.