Commercial Energy Rating
Services for Every Need
From standard BER certificates to complex energy audits and building regulation compliance: we provide a complete suite of commercial energy services nationwide.
From standard BER certificates to complex energy audits and building regulation compliance: we provide a complete suite of commercial energy services nationwide.
A Commercial BER (Building Energy Rating) certificate is legally required whenever a non-domestic building in Ireland is constructed, sold, or offered for rent. Our SEAI-registered assessors provide accurate, compliant commercial BER assessments for all building types, from small retail units to large industrial complexes.
The assessment involves a detailed on-site survey of your building's fabric (walls, roof, floor, windows), heating and cooling systems, ventilation, hot water, and lighting. Using SEAI-approved software, we calculate the building's energy performance and CO₂ emissions, resulting in a rating on the A0 to G scale in force since 24 May 2026 (A0 is reserved for zero-emission buildings).
Full on-site survey, SEAI-approved energy modelling, BER certificate registered on the national register, advisory report with improvement recommendations, and a digital copy emailed to you. SEAI registration fee included in our price.
Public buildings over 250m² that are frequently visited by the public must prominently display a DEC showing the building's actual energy performance. Unlike a standard BER which is based on calculated energy use, a DEC reflects real operational energy consumption based on utility bills and meter readings.
We prepare DECs by analysing your building's actual energy consumption data, producing the certificate, and advising on where you can make improvements to reduce energy costs and improve your displayed rating.
An energy audit goes beyond a BER assessment to provide a detailed analysis of where your building is using energy and where you can make savings. We examine your heating, cooling, lighting, equipment, and building fabric to identify cost-effective improvements that reduce your energy bills and carbon footprint.
Our energy audits are particularly valuable for businesses looking to reduce operational costs, meet corporate sustainability targets, or prepare for upcoming EU energy efficiency regulations under the Energy Performance of Buildings Directive (EPBD) recast.
If you're constructing a new commercial building or carrying out a major renovation, you need to demonstrate compliance with Part L of the Building Regulations, which sets minimum energy performance requirements. We provide Part L compliance reports, NZEB (Nearly Zero Energy Building) specifications, and design-stage energy consultancy to ensure your project meets all regulatory requirements.
Airtightness testing measures how much air leaks through your building envelope. It's a requirement for new buildings under Part L and a key factor in your building's energy performance. We carry out pressurisation tests using calibrated equipment and provide certified results that can be used for BER calculations and building control submissions.
Tell us about the building and we'll talk you through your options with an honest recommendation.
Free: see your old rating on the new A0 to G scale in seconds, for homes and commercial buildings.
Try it free →Every obligation, deadline and checklist in one working document, with the portfolio tracker included. €49.
See what's inside →A personalised, phased upgrade plan for your building against the new scale, costed and sequenced. €149.
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Urgent? info@commercialber.ie