No BER yet? Start with a pre-works BER
SEAI strongly advises a pre-works BER when a home has only one type of insulation, or neither. A registered BER assessor visits, rates the home and gives you the Advisory Report, which shows what the attic and walls need. A BER typically costs about €245 to €280. The post-works BER after the upgrade is needed for the claim, with a €50 grant towards it.
What it tells you, what it costs, and how it differs from the BER after the work.
Free, no obligation. One registered contractor prices it, not five.
- about €245–€280a BER, typically
- €50grant towards the post-works BER
- 1 visitto see what's missing
- Advisedby SEAI if you're unsure

Before and after
| Pre-works BER | Post-works BER | |
|---|---|---|
| When | Before you apply | After all the work |
| Needed for the grant | Advised if you're unsure | Yes, for the claim |
| Grant towards it | None | €50 |
| What it shows | What the attic and walls need | The HLI after the upgrade |
Is your home ready for the windows grant?
Four quick taps. You see where your home stands, what has to come first and every grant on the way. Your number is only asked for at the end, if you want a price.
A semi-D with the attic done and cavity walls never filled: 1 step first, the €1,300 cavity grant, then €3,000 for the windows and up to €1,600 for two doors.
How this is worked out
SEAI's windows and doors grant needs a Good or Very Good Heat Loss Indicator on the BER Advisory Report after the work, which SEAI says an HLI below 2.3 meets. Attic and wall insulation rated Good or Very Good on your report means you meet the standard. The grants are SEAI's fixed amounts for your home type, and the doors grant is shown for two doors. The check is a guide: a BER assessor and SEAI decide.
What a BER typically costs
| Home type | Typical BER |
|---|---|
| Detached | about €280 |
| Semi-D or end of terrace | about €280 |
| Mid-terrace | about €275 |
| Apartment | about €245 |
Prices are what BERs done for grant claims typically cost.
Skip it if you can
If SEAI grants paid for your attic and your wall insulation, SEAI can confirm it on its system, so you may not need a pre-works BER at all.
Questions people ask
Do I need a BER before the windows grant?
Not always. SEAI strongly advises a pre-works BER if the home has only one type of insulation or neither. Every claim needs a post-works BER.
How much is a BER?
Typically about €245 to €280. SEAI pays €50 towards the post-works BER.
Who does the BER?
A BER assessor on SEAI's register.

Check your home in four taps
Where you stand, what comes first and every grant on the way. Then, if you want, one SEAI-registered contractor who covers your county rings with a price.
