The SEAI National BER Register sits at ndber.seai.ie, and it will give you a property’s BER certificate, its advisory report and its expiry date. What it will not do is find a house by its address. The search box takes two things only: the BER number or the MPRN. Getting hold of either number is the whole trick.
Open the register and enter either the 11-digit MPRN from the top of the property’s electricity bill, or the 9-digit BER number from the certificate. If it is your own home, the MPRN is on your bill. If you are buying or renting, the BER number belongs in the property advertisement, and SEAI says prospective buyers and tenants can request a copy of the certificate and advisory report. A valid result lets you download the cert and the advisory report.
The Two Numbers the Register Accepts
The instruction on the search page is blunt: “Enter the BER number or the MPRN to review the BER Certificate for the property and then press Search.”
| Number | What it is | Where to find it |
|---|---|---|
| MPRN | The Meter Point Reference Number, the ESB meter number for the building. 11 digits. | Printed on your electricity bills, at the top |
| BER / DEC number | Assigned to a building when its first BER or DEC is published. 9 digits. | Printed on the BER certificate and advisory report, and carried in sale and rental advertisements |
The MPRN is the one to reach for if the property is yours or you are already living in it, because it is printed on your electricity bills. The BER number is the one to reach for if you are looking at somebody else’s house.
What to Do When You Do Not Have Either Number
This is where buyers and tenants get stuck. You are looking at a listing, you want to sanity-check the rating before you spend a Saturday on a viewing, and you have an address and nothing else.
Two routes get you there.
- Read the advertisement properly. Under the BER Regulations, sale and rental advertisements have to carry the BER, and the prescribed content includes the nine-digit BER number as displayed on the cert, alongside the A0 to G rating and the Energy Performance Indicator in kWh/m²/yr. If the number is in the ad, you can check it against the register yourself.
- Ask the agent. SEAI states that prospective tenants and buyers can request a copy of the BER certificate and advisory report, and can input the BER number on the register to check it against the published BER. Where a BER was published before 6 July 2021 and you need the advisory report, you have to search by MPRN, so ask the owner or their agent for the MPRN as well. SEAI gives the same advice to a purchaser or renter who does not know the MPRN: contact the building owner or their agent.
If the advertisement carries no BER at all, that is not a dead end either. Enforcement of the advertising rules sits with each local Building Control Authority, and SEAI’s guidance is that where the BER is missing from an advertisement you should notify the building control authority for the area the property is in.
Check the result against the register itself before acting on it. A BER certificate lists the property address, the rating, the carbon dioxide emissions and the BER issue and expiry dates, and the register will also show you the expiry date, so the two should agree.
What a Successful Search Gives You
A hit on the register lets you see whether the property has a valid BER certificate, download that certificate and the advisory report, and read the BER expiry date. The advisory report is the part worth opening. SEAI describes it as the document accompanying the certificate that provides guidance on how to improve the BER, and Citizens Information calls it a report with recommendations on how to improve your BER.
Two limits apply on the advisory report side of it.
- Advisory reports have a cut-off date. Where the BER was published before 6 July 2021, the advisory report can only be downloaded by searching with the MPRN. Where it was published on or after 6 July 2021, either number works.
- Non-domestic buildings are different. It is not possible to download advisory reports for non-domestic buildings from the register at all. SEAI directs a prospective purchaser or renter of one to contact the building owner or their agent for a copy.
When Nothing Comes Back
Work through four situations, each with its own fix.
- The property never had one. Citizens Information’s advice for that case is to check online whether there is a BER rating and, if there is not, to hire an approved BER assessor to survey and assess the home and calculate the BER.
- The BER expired. A certificate is valid for up to 10 years, unless the owner makes changes that affect the dwelling’s energy performance, such as an extension or a new heating system. SEAI states that it cannot provide copies of expired BERs to homeowners, sellers or renters under the S.I. 243 Regulations, and that a new assessment is needed where one has expired.
- It was revoked. A BER can be revoked after an audit under SEAI’s Quality Assurance process. The assessor is then supposed to tell the owner why, ask for the revoked certificate and advisory report to be destroyed, and issue a replacement. Where the assessor cannot replace it, they should refund the owner.
- The home is new and only has a provisional BER. Buying off the plans gets you a provisional BER, valid for 2 years and based on the design and drawings. The new-final BER is an assessment of the home as constructed and includes a survey of the completed building, so ask for that one before closing.
If the answer turns out to be “no BER” and you need one, SEAI also runs a national register of BER assessors to help you find a BER assessor in your area, which lists the assessors working in Ireland. Citizens Information puts the cost at around €150 for an apartment and between €200 and €300 for a standard house, and says to get at least 3 quotes from different assessors. Our page on what a BER cert costs goes through what moves that figure up or down.
Reading the Result After the 24 May 2026 Scale Change
If the certificate you pull up says B2 and the one next to it says B, they are not a typo. Ireland changed the scale on 24 May 2026, moving from 15 ratings with sub-categories to eight: A0, A, B, C, D, E, F and G. The change was made to bring the Irish system into line with what other EU countries use.
Old certificates were not cancelled. A BER issued before the change keeps its old-scale rating and stays valid for the remainder of its 10 years, so the register will keep returning pre-change ratings for years yet. Nobody needs a re-assessment because of the scale change alone.
The top of the new scale is the part that matters for anyone planning upgrades. A0 is a new category for the most energy-efficient buildings, and it is reserved for homes that do not use fossil fuels. A house with a gas boiler cannot reach A0, no matter how well insulated it is.
What the Law Requires
The BER Regulations (S.I. 243/2012) require all buildings that are constructed, sold or rented to have a valid BER certificate and advisory report, residential and commercial alike, and require all sales and rental property advertisements to include the BER. The responsibility for obtaining a BER certificate lies with the landlord or property owner.
A short list of buildings is exempt: national monuments, protected structures and proposed protected structures, places of worship or buildings used for the religious activities of any religion, certain temporary buildings, industrial buildings not intended for extended human occupancy with an installed heating capacity of 10 W/m² or less, non-residential agricultural buildings with the same low heating capacity, and stand-alone buildings with a useful floor area under 50 m². Citizens Information gives the worked example: a protected structure such as a Georgian house is BER exempt, though the owner can still get an assessment if they want one.
What a Weak Rating Actually Tells You
A BER is a calculated rating rather than a measurement of anyone’s bills. It is worked out using DEAP, Ireland’s official method for calculating a dwelling’s BER. The assessor surveys each room including the attic and garage, and records construction type, the year of construction and any extensions, dimensions, orientation, insulation levels, the heating system and its controls, hot water, ventilation, lighting and any renewable systems. The number of occupants is assumed from the floor area rather than counted, which is what lets prospective buyers or tenants compare dwellings on a like-for-like basis.
It also means the rating responds to physical changes to the building, and renewables are one of the levers. SEAI lists photovoltaics, heat pumps, solar water heating, biomass and wind among the renewables that have a positive impact on the rating, and the top band now depends on getting off fossil fuels entirely. If you are working through the advisory report with an eye on the grants available, the sequence usually runs fabric first, then heating, then generation.
One practical note for anyone adding solar during a sale or a retrofit: keep the paperwork. Where there is insufficient documentation available to the assessor, conservative default values are used, and SEAI says that may result in a lower rating than expected. The assessor is required to upload to DEAP any documentation or photos supporting a non-default value, so certificates and photographs for the panels, the inverter and the insulation earn their keep at assessment time.
The SEAI Solar Electricity Grant pays €700 per kWp up to 2 kWp and €200 per additional kWp up to 4 kWp, for a maximum of €1,800, on homes built and occupied before 2025.
Get a Solar Quote →Frequently Asked Questions
No. The SEAI National BER Register takes the BER number or the MPRN, and nothing else. SEAI states that to search the register you need one of two pieces of information about the property: the Meter Point Reference Number from the top of the electricity bill, or the BER number from the BER certificate and advisory report. If you are a prospective purchaser or renter and you do not know the MPRN, SEAI advises contacting the building owner or their agent.
Usually, yes. SEAI says the register lets you download the BER certificate and advisory report and see the expiry date. Where the BER was published before 6 July 2021, the advisory report can only be reached by searching with the MPRN; on or after that date either number works. Advisory reports for non-domestic buildings cannot be downloaded from the register at all, and SEAI directs a prospective purchaser or renter of one to the building owner or their agent.
Up to 10 years from the date it was issued, unless the owner makes changes that affect the dwelling’s energy performance, such as a new extension or a new heating system. Those changes mean a new assessment. The 24 May 2026 scale change does not shorten an existing certificate: a BER issued before then keeps its old-scale rating for the rest of its 10 years.
It may never have been assessed, since the requirement applies to buildings that are constructed, sold or rented. The certificate may have expired: SEAI cannot supply copies of expired BERs under the S.I. 243 Regulations, and advises that a new assessment be carried out where one has expired. The BER may also have been revoked following an audit under SEAI’s Quality Assurance process, in which case the assessor should have informed the owner of the revocation and its reasons, asked for the certificate and advisory report to be destroyed and issued a replacement, or refunded the owner if they could not replace it.
The BER or DEC number is a 9 digit number assigned to a building when its first BER or DEC is published, and it is printed on the certificate. The MPRN is the ESB meter number for the building, an 11 digit number printed on electricity bills. Either will return the certificate. For an advisory report on a BER published before 6 July 2021, only the MPRN works.
Not unless the building is exempt. The BER Regulations (S.I. 243/2012) require all sales and rental property advertisements to include the BER, and the prescribed content covers the A0 to G rating, the nine-digit BER number and the Energy Performance Indicator. Enforcement is the responsibility of each local Building Control Authority, and SEAI advises notifying the building control authority for the area where the property is located.
Yes. SEAI lists renewables including photovoltaics, heat pumps, solar water heating, biomass and wind as having a positive impact on the rating, and the top A0 band is restricted to homes that do not use fossil fuels. Bring the documentation and certification for the installation to the assessment, because without it the assessor has to apply more conservative default values.