A BER is the energy rating on your home, and you need one to sell, to rent, and to draw down any SEAI grant. Here is how to find an existing one for free, what a new assessment costs, and why two assessors can look at the same house and give it two different grades.
| Situation | BER needed? | What to know |
|---|---|---|
| Selling your home | Yes | It must be in place before you advertise, and the rating, BER number and energy performance indicator have to appear in the ad. |
| Renting it out | Yes | Same rules as a sale. The owner or landlord is responsible for getting it. |
| Claiming an SEAI grant | Yes, afterwards | A post-works BER is required before SEAI will pay your grant. There is a €50 BER grant towards it. |
| A new build | Yes | Provisional BERs on new builds are valid for a maximum of two years. |
| Staying put, not selling or renting | No | You only need one if you want one, though it is the cheapest way to plan an upgrade. |
National monuments, places of worship, temporary buildings and standalone buildings under 50 square metres are exempt. Enforcement sits with your local Building Control Authority.
Most homes already have one and people do not realise it. Search the SEAI National BER Register at <a href="https://ndber.seai.ie/pass/ber/search.aspx" rel="nofollow">ndber.seai.ie</a>. It is free and it is public.
You need one of two things. The Meter Point Reference Number, the MPRN, from the top of your electricity bill, or the nine digit BER number from an existing certificate. Address alone will not do it, which is the thing that trips people up.
If a certificate exists you can download both the cert and the advisory report. The advisory report is the useful half and almost nobody reads it. It lists, in order, the upgrades that would move your rating on this specific house.
A BER is valid for ten years from the date it was issued, so a cert from 2019 is still live. It stops reflecting reality if you have since done major work, such as an extension, a new heating system or insulation.
SEAI do not set a price and do not publish one. Their advice is to shop around and get three quotes, and to get all fees confirmed in writing before you commission anyone.
In practice most homeowners in Ireland pay somewhere in the region of €150 to €350 for a domestic BER. An apartment or a small terraced house sits at the bottom of that, a large detached house with an extension, a converted attic and two heating systems sits at the top. Rural travel distance and a same week appointment both push it up.
The quote should include the site survey, the DEAP calculation, the SEAI publishing fee, the certificate and the advisory report. Ask whether the publishing fee is included, because that is the line that occasionally appears as an extra afterwards.
If the BER is the post-works one for an SEAI grant, there is a €50 BER grant towards it. It is a contribution, not the cost.
This is the thing most websites have not updated. The old fifteen band scale with subdivisions, A1, A2, A3, B1, B2, B3 and so on, has been replaced by eight bands. A0, A, B, C, D, E, F and G.
A0 is the top, for homes that are highly energy efficient and do not use fossil fuels. Everything else is a single letter. So the B2 you were aiming at is now simply a B.
Your existing certificate is unaffected. All BERs already issued stay valid for ten years from their date of issue and remain acceptable for sales, lettings and lease renewals. You do not need to get a new one because of this change.
New certificates carry more information than the old ones, including energy consumption, the renewable share, lifecycle carbon and a QR code linking to upgrade guidance for your home. One practical knock on effect: the One Stop Shop requirement that used to be a B2 post-works rating is now stated as a B.
The most useful thing on this page is this. A BER is not a measurement of your house, it is a calculation based on what the assessor can verify on the day. Anything that cannot be verified is entered at a default assumption, and the defaults are pessimistic on purpose.
One homeowner moved from a D2 to a B with no additional physical work whatsoever, purely by commissioning a second assessment, after the first assessor had recorded the wall insulation at half its real thickness. Another was scored C1 instead of a likely B3 simply because the insulation in the house could not be verified on site.
That is two whole grades of difference on the same building. On a sale, that is real money. On a grant application or a green mortgage rate, it can be the difference between qualifying and not.
This is not a reason to distrust assessors. It is a reason to turn up with evidence.
Build a folder before the assessor arrives. Every piece of paper you have on the building fabric and the heating system.
Specifically: receipts and invoices for insulation work, product datasheets showing thickness and lambda values, photographs of insulation in place with a tape measure in the shot, delivery dockets, the contractor's written specification, any SEAI grant paperwork from previous upgrades, window and door certificates with the U-values, the boiler or heat pump make and model with its efficiency data, commissioning reports, and drawings or plans if you have them.
Then give the assessor physical access to everything. The attic hatch clear, the hot water cylinder visible, the heating controls reachable. An assessor who cannot get into the attic has to assume the worst about your attic.
If you are having insulation done, photograph it before it is covered over. Once the plasterboard or the render goes on, the evidence is gone, and it is internal wall insulation that suffers most from this.
Every assessor must be registered with SEAI and listed on the National Register of BER Assessors. Anyone not on that register cannot publish a valid certificate, no matter what they tell you.
SEAI's own advice is to get quotes from at least three. Ask each one whether they carry out the survey themselves or send someone else, how long from survey to certificate, and whether the fee includes the SEAI publishing fee.
Ask about turnaround honestly. If you are selling, you need the BER number before the property can be advertised, and a week's delay can hold up a listing.
You can compare BER assessors covering your county here.
Every individual grant applicant has to carry out a post-works BER assessment, and it has to be done before you can draw down the money. It is not optional and it is not a formality.
You have eight months from your grant offer to complete the works, and the BER has to be done inside that. The €50 BER grant is claimed as part of the same process.
Separately, if you are considering a heat pump and your home was built before 2007, you need a technical assessment of heat loss before you apply. SEAI pay a €200 grant towards that, and it is a different thing from a BER, though the same assessor often does both.
If you are working out what to do first, the advisory report attached to your BER and the grant calculator together will tell you most of what you need.
Go back to your assessor first. They published the rating, so they are the person responsible for explaining it, and if something was entered wrong they can correct and republish it. Bring the specific point, for example the actual insulation thickness with the datasheet, rather than a general complaint that the rating seems low.
If that goes nowhere, contact the SEAI BER helpdesk.
You can also simply commission a second assessment from a different assessor. It costs another fee and there is no guarantee it goes your way, but where the first assessment defaulted a lot of unverified elements, and you have since found the paperwork, it often does.
Tell us your county and we will introduce registered assessors covering your area. Compare three before you book.
SEAI set no fixed price and recommend getting three quotes. Most Irish homeowners pay in the region of €150 to €350, driven by the size and complexity of the home and how far the assessor travels. Check whether the SEAI publishing fee is included in the quote.
Search the SEAI National BER Register at ndber.seai.ie. It is free. You need either the MPRN from the top of the electricity bill or the nine digit BER number from an existing certificate. Address alone will not return a result.
Ten years from the date it was issued. Provisional BERs on new builds last a maximum of two years. A cert stops being an accurate picture if you have since extended the house or changed the heating system, even though it stays technically valid.
From 24 May 2026 the scale became A0, A, B, C, D, E, F and G. The subdivisions like B2 and A3 are gone. Certificates issued before that date stay valid for their full ten years and you do not need a new one.
Yes, afterwards. A post-works BER assessment is required before SEAI will pay out on an individual energy upgrade grant. There is a €50 BER grant towards the cost.
Yes. Raise it with the assessor who published it first, with the specific evidence, because they can correct and republish. If that does not resolve it, contact the SEAI BER helpdesk. You can also commission a second assessment, which is how one homeowner went from D2 to B2 with no physical work done.
Whenever a home is built, sold or rented. It must be in place before advertising, and the ad has to show the rating motif, the BER number and the energy performance indicator. National monuments, places of worship, temporary buildings and standalone buildings under 50 square metres are exempt.
Checked against the official pages on 27 August 2026. Grant terms change, so confirm current amounts with SEAI or your installer before you commit.