This help page describes the M&R data input screen for public bodies called ‘Building register’. Use this screen to maintain an up to date building register for your organisation.
For guidance on which buildings to report and on what constitutes a standalone building, see buildings (methodology).
- This screen comprises two green tabs.
- 'Annual building data' is for reporting floor area and consumption data for your buildings for 2025.
- ‘Building configuration’ is for adding a new building, or for editing or viewing the configuration details for an existing building.
- There is a mandatory check box at the bottom of the screen ‘This building register is complete for 2025’.
- This screen is visible to all users.
- Note that the 'Bulk update' button under the 'Annual building data' tab is disabled and will only become available for use in future years after you have reported 2025 consumption data for buildings for which it is mandatory to do so.
Every year, you must update the building register to ensure that it contains an up to date list of your buildings - as of 31 December of the previous year.
The following are the steps required to complete the building register for each building.
- Step 1: add the building to the building register. This is a once-off task that includes adding configuration details for the building, including address, building type, ownership status, BER status, etc. These configuration details typically do not change from year to year, so once they have been added there is no need to edit them annually unless there has been a change at the building. See step 1 guidance below.
- Step 2: report floor area for 2025. This is an annual task.
- Step 3: report building-level energy consumption for 2025 for buildings that have been classified by SEAI as ‘mandatory buildings’. These buildings are indicated via an asterisk in the column ‘2025 energy use’ in the ‘Annual building data’ tab. You can also optionally report building-level energy consumption data for 2025 for buildings that have not been classified by SEAI as ‘mandatory buildings’. Reporting building-level consumption data comprises two sub-steps:
- Step 3(a): link specific MPRNs, GPRNs or other energy types to the building, corresponding to the electricity and fuel consumption in the building. This is typically a once-off task. You can only link MPRNs or GPRNs that your organisation has already reported at organisation-level, and energy types that your organisation has previously selected as being part of your organisation's energy mix (via the choose energy types screen).
- Step 3(b): enter annual values for the percentage of consumption through linked MPRNs or GPRNs that you want to assign to the building, and annual building-level consumption values for other linked energy types.
- Step 4: click the mandatory check box at the bottom of the screen ‘This building register is complete for 2025’.
You can undertake steps 1-4 above on-screen (i.e. directly in the M&R system) or by uploading an updated building register spreadsheet.
- SEAI recommends using the on-screen approach if you have a small-medium portfolio of buildings.
- The spreadsheet upload may be more convenient if you have a large portfolio of buildings.
There is separate detailed step-by-step guidance available for doing an on-screen update (below) and for updating via spreadsheet upload (here).
This section provides step-by-step guidance for updating the building register for 2025 using the online M&R system.
Different icons and colours are displayed in the '2025 energy use' column in the ‘Annual building data’ table, to indicate different statuses:
- Asterisk (*)
- Green means that 2025 energy consumption has been reported for a building for which it is mandatory to do so.
- Red means that energy consumption has not been reported for 2025 for a building for which it is mandatory to do so.
- Electricity icon (lightning bolt):
- Green means electricity consumption has been reported for 2025.
- Red means electricity consumption has not been reported for 2025 for a building for which it is mandatory to do so.
- Grey means electricity consumption has not been reported for 2025 for a building for which it is not mandatory to do so, but for which an MPRN or other electricity energy type has been linked to the building.
- Flame icon (other fuel):
- Green means fuel consumption other than electricity has been reported for 2025.
- Red means fuel consumption other than electricity has not been reported for 2025 for a building for which it is mandatory to report energy consumption and for which a GPRN or other fuel type has has been linked to the building.
- Grey means fuel consumption other than electricity has not been reported for 2025 for a building for which it is not mandatory to report consumption, but for which a GPRN or other fuel type has been linked to the building.
You can find an explanation of each icon by hovering your mouse over the icon.
If an icon indicates that you need to take action to add or edit data, you can do so by clicking on the icon.
It is only necessary to undertake this step if a building is not already in the building register. You can review the buildings that are already in your building register using the table and search feature under the ‘Building configuration’ tab. To add a new building:
- Click the ‘Building configuration’ tab and then the green ‘Add building’ button.
- Select ‘Create a new building & add to building register’ and click 'Next'.
- Complete the dialogue, noting that the fields with asterisks are mandatory. The full list of building configuration fields is listed below.
- Click ‘Next’.
- Enter the floor area for 2025 in m2. This is mandatory. You can also optionally enter the floor area for previous years.
- If the building is ≥4,000 m2 you must also report building-level consumption data for the building, per step 3 below. If the building is <4,000 m2 you can optionally report building-level consumption data.
- Click ‘Save’.
For guidance on which buildings to include in your building register see buildings to include & exclude.
- Click the ‘Annual building data’ tab. This tab only shows the buildings that are in your building register for 2025.
- Enter the 2025 floor area for each building in the table in the relevant column.
- To see the floor area reported for a previous year, click on the building icon in the right-hand column. You can also enter the 2025 floor area here. Click 'Save'.
- Work your way through all the buildings shown in the table, ensuring that you report a floor area for all buildings.
- Click ‘Save’.
The step is mandatory for buildings that have been classified by SEAI as ‘mandatory buildings’. These buildings are indicated via an asterisk in the column ‘2025 energy use’ in the ‘Annual building data’ tab. This step is optional for all other buildings.
- Click the ‘Annual building data’ tab. This tab only shows the buildings that are in your building register for 2025.
- Step 3(a): if you have not already done so you must first link an MPRN and/or another electricity energy type to the building and, unless your building is heated entirely using electricity, you must also link a GPRN and/or another fuel type to the building. These are once-off tasks, i.e. once an MPRN, GPRN or other energy type is linked to a building, the linkage endures year on year. This linkage enables you to report consumption for the building for a specific year.
- To link an MPRN to the building, click the building icon in the right-hand colunm, scroll down and click ‘Link MPRN to building’ (step-by-step instructions) and click ‘Save’.
- To link another electricity energy type to the building (e.g. solar PV, non-MPRN electricity), click the building icon in the right-hand column, scroll down and click ‘Link other electricity energy type to building’ (step-by-step instructions) and click ‘Save’.
- To link a GPRN to the building, click the building icon in the right-hand columnm, scroll down and click ‘Link GPRN to building’ (step-by-step instructions) and click ‘Save’.
- To link another fuel type to the building (e.g. gasoil, kerosene, non-GPRN gas), click the building icon in the right-hand column, scroll down and click ‘Link other thermal energy type to building’ (step-by-step instructions) and click ‘Save’.
- Step 3(b):
- For each linked MPRN, enter a value for the percentage of your organisation's electricity consumption through the MPRN that you want to assign to the building for 2025. You do this in one of three different ways:
- By clicking on the electricity icon and then entering the % value against the MPRN in the table, and then clicking ‘Save’, or;
- By clicking on the building icon in the right-hand column, scrolling down to the table in the electricity section, entering the % value for 2025 against the MPRN and then clicking ‘Save’, or;
- Immediately after clicking ‘Confirm’ to link the MPRN, by scrolling down to the table in the electricity section, entering the % value for 2025 against the MPRN and then clicking ‘Save’.
- For each linked GPRN, enter a value for the percentage of your organisation's gas consumption through the GPRN that you want to assign to the building for 2025. You do this in one of three different ways:
- By clicking on the flame icon and then entering the % value against the GPRN in the table, and then clicking ‘Save’, or;
- By clicking on the building icon in the right-hand column, scrolling down to the table in the heating fuels section, entering the % value for 2025 against the GPRN and then clicking ‘Save’, or;
- Immediately after clicking ‘Confirm’ to link the GPRN, by scrolling down to the table in the heating fuels section, entering the % value for 2025 against the GPRN and then clicking ‘Save’.
- For each linked energy type (other than MPRNs or GPRNs), enter a value for the annual consumption in the building for 2025, in the unit indicated. You do this in one of three different ways:
- By clicking on the electricity or flame icon and then entering the 2025 consumption value against the energy type in the table (noting the units), and then clicking ‘Save’, or;
- By clicking on the building icon in the right-hand column and scrolling down to the table in the electricity or heating fuels section (as applicable), entering the consumption value for 2025 against the energy type (noting the units) and then clicking ‘Save’, or;
- Immediately after clicking ‘Confirm’ to link the MPRN, by scrolling down to the table in the electricity section, entering the % value for 2025 against the MPRN and then clicking ‘Save’.
- Work your way through all the buildings shown in the table, ensuring that you report energy consumption (electricity and other fuels) for all buildings for which it is mandatory to do so. You can check which buildings are incomplete by reviewing the colour-coded icons.
After you have completed steps 1-3, you must also tick the declaration below the table on the ‘Annual building data’ tab. By checking this box you are confirming that the building register is complete and up to date for your organisation, as of the end of 2025.
See uploading building data.
Fields with asterisks are mandatory:
- Building name*, which must be unique i.e. you cannot use the same name for multiple buildings.
- Building ID: if your organisation has an ID or reference number for the building, you can enter it here.
- Description*: a description of the building that makes sense to you.
- Address, including county and Eircode*
- Building type* and sub-type*
- The building sub-type options depend on your choice of building type.
- If the building is being reported by an education & training board (ETB): primary use of ETB building*
- Ownership status*
- If building is leased: lease renewal/expiry date*.
- If building is leased from another public body: PSO ID of the public body from which it is leased*.
- Occupancy status*
- BER status* (has valid BER (details known); has valid BER (details not known); does not have valid BER)
- If BER details are known: BER rating*, BER number* and BER expiry*.
- DEC status 2025* (has valid DEC; does not have valid DEC (DEC not required); does not have valid DEC (DEC required); does not have valid DEC (don't know whether DEC required))
- BER status* (has valid BER (details known); has valid BER (details not known); does not have valid BER)
- If BER details are known: BER rating*, BER number* and BER expiry*.
- DEC status* (has valid DEC; does not have valid DEC (DEC not required); does not have valid DEC (DEC required); does not have valid DEC (don't know whether DEC required))
- Protected structure (yes/no). A protected structure is a structure that is listed on a planning authority’s Record of Protected Structures (RPS) because of its architectural, historical, archaeological, artistic, cultural, scientific, social or technical characteristics.
- Building maintained by OPW (yes/no)
- EU ETS participant (yes/no). Note that very few buildings in the public sector are currently in the EU Emissions Trading Scheme (ETS), which is the EU's ‘cap and trade’ scheme for very large emitters of greenhouse gases.
- Priority building (yes/no): choose yes if this building is a significant energy user in the context of your organisation's energy use and achieving your 2030 targets. Choose no if it is a minor energy user in this context.
- OPW building code (B code): this is a code assigned by the OPW to OPW-provided and/or OPW-maintained buildings. The format is B1234.
- Proposed exit date: if your organisation proposes to exit this building at a future time, enter an indicative exit date.
- Building NACE code. The NACE code for the primary economic activity undertaken in the building.
- Latitude
- Longitude
- Tags
- Additional information: additional information that you wish to enter for the building. Note that while this information will be available to SEAI, SEAI will not explicitly review it as part of your submission.
The following are the building type and sub-type categorisations currently used in the building register. You should choose the building type and sub-type that best matches the function and activity of the building, rather than the overall sector in which your organisation operates, e.g. an office building on a university campus should be reported as one of the office types, rather than as one of the education types.
- Arts, culture, heritage, tourism
- Gallery
- Heritage site
- Museum
- Theatre
- Visitor centre
- Other arts, culture, heritage, tourism
- Café, canteen, catering, cookhouse, dining, kitchens, restaurant
- Education
- Assembly
- Education centre
- Laboratory
- Lecture hall
- Library
- School
- Training facility
- Other third level
- Other education
- Healthcare
- Hospital
- Medical centre
- Primary care centre
- Other healthcare
- Justice, defence, emergency services
- Barracks
- Courthouse
- Fire station
- Garda station
- Prison
- Other justice, defence, emergency services
- Local, community, recreation
- Church
- Recreation facility
- Community centre
- Civic amenity
- Creche
- Library
- Lifeguard facility
- Other local, community, recreation
- Office
- Naturally ventilated
- Air conditioned
- Partially air conditioned
- Other office
- Residential
- Defence Forces accommodation
- Nursing home, residential care
- Student accommodation
- Other residential
- Specialised building
- Agriculture, aquaculture, equine, veterinary
- Air traffic control
- Boilerhouse, energy centre, generator, plantroom, pumphouse, substation
- Broadcast facility
- Communications
- Conference, venue
- Data centre
- Enterprise unit, industrial unit
- Laboratory
- Maintenance, workshop
- Postal facility
- Retail
- Store, warehouse
- Waste, recycling, landfill
- Other specialised building
- Sports facility
- Dressing rooms
- Leisure centre, gym, sports pavilion (no pool)
- Swimming pool
- Other sports facility
- Transport, transit, vehicles
- Airport
- Bus station
- Car park
- Port, harbour facility
- Train station
- Vehicle depot, maintenance
- Other transport, transit, vehicles
- Welfare (WC, changing rooms, showers, locker rooms, etc.)
This section provides step-by-step guidance for viewing or editing details for one or more buildings that are already in the building register.
- Click the ‘Building configuration’ tab.
- Find the building in the table and click on the view button (eye) in the right-hand column.
- Review the data in the dialogue.
- Click ‘Cancel’.
- Click ‘Download’.
- Enter the email address to which you want the download spreadsheet to be issued.
- Click ‘Download’.
- You will receive an email with a spreadsheet attachment containing your building data.
- Open the spreadsheet and review the configuration details data in the 'configure building' worksheet.
- Click the ‘Building configuration’ tab.
- Find the building in the table.
- Click on the edit button in the right-hand column.
- Edit the data in the dialogue, that the fields with asterisks are mandatory.
- Click ‘Save’.
This section provides step-by-step guidance for removing and deleting one or more buildings from the building register.
¶ Difference between removing and deleting a building
- The building register is a snapshot of your organisation's portfolio of buildings as of 31 December in each year.
- Removing a building from the building register for a year means that the building is not included in your building register for that year. However, the building remains on your building register for other years and it is not deleted from the M&R system. By default, the building is shown towards the bottom of the list of buildings.
- Removing a building from the building register for all years means that the building is not included in your building register for all years. However, the building is not deleted from the M&R system. By default, the building is shown towards the bottom of the list of buildings.
- Deleting a building from the building register permanently removes it from the building register and from the M&R system. You should only delete a building it if was never part of your portfolio.
- Click the ‘Building configuration’ tab.
- Find the building in the table.
- Uncheck ‘In building register’.
- Click ‘Save’.
- The building will be shown at the bottom of the table.
- Click the ‘Building configuration’ tab.
- Find the building in the table.
- Click on the edit button in the right-hand column.
- Scroll down to the table showing ‘In building register’ and uncheck the relevant year(s). You can view previous years by toggling the 'all years' control.
- Click ‘Save’.
- The building will be shown at the bottom of the table.
- Click the ‘Building configuration’ tab.
- Find the building in the table.
- Click on the delete button in the right-hand column.
- Click ‘Delete’ or ‘Cancel’.
- Remember that deleting a building will permanently remove it from the building register. You should only delete this building if it should never have been included in your building register.
- You must update the building register each year. The update should account for your portfolio of buildings as of 31 December of the last calendar year.
- All buildings for which you report building-level consumption data must have at least one MPRN or other electricity energy type linked to the building.
- Almost all buildings for which you report building-level consumption data must also have at least one GPRN or other fuel type linked to the building. The only exceptions are buildings that are heated exclusively using electricity.
- The ‘Buildings’ element in the main progress bar will not turn green unless you have ticked this checkbox and there are no outstanding red icons displayed in the '2025 energy use' column in the ‘Annual building data’ table.
- The reporting unit for non-GPRN natural gas is kWh expressed on a gross calorific value basis.
- The values entered for the percentage of an MPRN's (or GPRN's) consumption that is attributable to a building is expressed a percentage of your organisation's share of the consumption through the MPRN (GPRN). This may be different to the percentage of the total consumption through the MPRN (GPRN) in a scenario where your organisation shares an MPRN (GPRN) with another organisation. Consider, for example, an arrangement whereby two organisations share a 3-building campus that is served by a single MPRN through which 100,000 kWh were consumed in 2025. Organisation A consumed 75,000 of the electricity, with two thirds of organisation A's consumption being in a larger building (building A1) and one third in a smaller building (A2), and organisation B consumed 25,000 of the electricity in one smaller building (B1). In this scenario:
- Organisation A should link the MPRN to building A1, and should assign 67% of its consumption through this MPRN to building A1.
- Organisation A should link the same MPRN to building A2, and should assign 33% of its consumption through this MPRN to building A2.
- Organisation B should link the same MPRN to building B1, and should assign 100% of its consumption through this MPRN to building B1.
- You must tick the box ‘This building register is complete for 2025’ to complete this reporting task.