The SEAI offers substantial grants for home energy upgrades, from attic insulation to full deep retrofits. But every single grant requires one thing before you can start: a BER assessment. Here's what's available and how to get started.
Key fact: You cannot apply for any SEAI home energy grant without a valid before-works BER assessment completed before upgrade work begins. If work starts without a BER, you won't be eligible for the grant. Call 087 777 4155 to book yours.
SEAI Home Energy Grants at a Glance
| Upgrade | Max Grant | BER Required? |
|---|---|---|
| Attic insulation | €1,500 | ✓ Before & after |
| Cavity wall insulation | €1,700 | ✓ Before & after |
| Internal dry-lining insulation | €4,500 | ✓ Before & after |
| External wall insulation | €6,000 | ✓ Before & after |
| Heat pump system | Up to €12,500 | ✓ Before & after |
| Heating controls upgrade | €700 | ✓ Before & after |
| Solar PV panels | €1,800 | ✓ Before & after |
| Windows & doors | €3,000 | ✓ Before & after |
| One Stop Shop (deep retrofit) | Up to €25,000 | ✓ Before & after |
Grant amounts are subject to change, check seai.ie for the latest figures. For a personalised estimate, use the SEAI grant calculator on HomeEnergyGuide.ie.
Why You Need a BER Before Applying
Every SEAI home energy grant follows the same process: a before-works BER establishes your home's current energy performance, the upgrade work is carried out, and then an after-works BER confirms the improvement. The SEAI uses the difference between the two ratings to verify that the grant-funded work delivered real energy savings.
This means the BER assessment isn't just paperwork, it's the foundation of your entire grant application. Without it registered on the SEAI system before work begins, your grant application will be rejected. We see this happen more often than you'd think, homeowners start upgrade work in good faith, then discover they needed a BER first and can't claim the grant retrospectively.
How HomeRating.ie Fits In
We handle both the before-works and after-works BER assessments for all SEAI grants. Here's what that looks like in practice:
Step 1. Before-works BER: We visit your home, assess its current energy performance, and register the BER on the SEAI system. This typically takes 30–60 minutes on site. Your certificate and advisory report are emailed to you, the advisory report is especially valuable as it identifies exactly which upgrades will have the biggest impact for your specific property.
Step 2. You get the work done: Using the advisory report as your guide, you arrange the upgrade work with an SEAI-registered contractor. We can advise on which upgrades to prioritise based on your budget and goals.
Step 3. After-works BER: Once the upgrades are complete, we return to carry out the second assessment. This captures your improved rating and completes the grant process.
Which Upgrades Give the Best Return?
Not all upgrades deliver the same BER improvement per euro spent. Based on thousands of assessments across Dublin, here's what consistently delivers the best results:
Best value: Attic insulation top-up, cheap, fast, and can improve your BER by 1–2 grades. Cavity wall insulation, similarly cost-effective for homes with unfilled cavities.
Biggest impact: External wall insulation for solid-wall homes, expensive but transforms the rating by 2–3 grades. Heat pump installation, dramatic BER improvement especially when replacing oil or electric heating.
Best for comfort: Windows and doors, the BER improvement is moderate but the comfort and draught reduction is immediately noticeable.
For detailed upgrade-by-upgrade guidance, see our complete guide to improving your BER rating. For in-depth information on each upgrade type, visit HomeEnergyGuide.ie where you'll find dedicated guides on insulation, heat pumps, solar panels, and windows and doors.
Landlords. You're Eligible Too
Landlords qualify for the same SEAI grants as owner-occupiers. With potential minimum BER standards for rental properties on the horizon, upgrading now while grants are available makes financial sense. See our landlord BER guide. For whole-house retrofits, see our guide to the One Stop Shop grants programme and the minimum BER for rentals guide. See real before and after BER results from Dublin homeowners who used SEAI grants for more.
Ready to Get Started?
The first step for any SEAI grant is booking your before-works BER assessment. We offer appointments 7 days a week including evenings, with fast turnaround on certificates. One call gets the process started.
Book Your Before-Works BER
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