Article 5 — Statistics requirements

1. European statistics on population and housing shall cover the following domains: (a) demography; (b) housing; (c) families and households. 2. Statistics in the domains listed in paragraph 1 shall be organised into data sets in accordance with the list of topics and detailed topics and their corresponding periodicity, reference times, data transmission deadlines and territorial levels, as set out in the Annex. Where the statistical unit is a person, the data sets shall be disaggregated at least by sex and age, save as provided for in footnote 1 of the Annex. Concerning the detailed topic energy-related building characteristics, the data to be transmitted on energy efficiency of buildings shall be restricted to the data available in the national database for energy performance of buildings, set up pursuant to Article 22 of Directive (EU) 2024/1275, of the relevant Member State. 3. The Commission is empowered to adopt delegated acts in accordance with Article 16 to amend the list of detailed topics set out in the Annex. Where a delegated act introduces a new detailed topic, that delegated act may also include the relevant periodicity, reference time, transmission deadline and territorial level. Such delegated acts shall be adopted at least 18 months before the beginning of the relevant reference time. 4. Where the Commission exercises its power to adopt delegated acts pursuant to paragraph 3 of this Article, it shall ensure that: (a) the delegated acts are duly justified and do not impose a significant additional burden or cost on Member States or on the respondents; (b) feasibility or pilot studies as referred to in Article 13 are carried out and their results are taken into account before the adoption of any delegated act. 5. The Commission shall adopt implementing acts to specify the data sets and metadata to be transmitted to the Commission (Eurostat). Those implementing acts shall set out: (a) a list of variables, their technical specifications and breakdowns, provided that the territorial breakdowns are not more detailed than the territorial levels set out in the Annex; (b) detailed specifications of the statistical units and metadata; (c) statistical classifications to be used; (d) the technical formats for data sets and metadata transmission and further specifications, where needed and justified; (e) the technical specifications for dedicated adjustment categories referred to in Article 11(2). 6. Before the Commission adopts an implementing act pursuant to paragraph 5 of this Article, it shall assess the statistics related to persons and households already collected pursuant to Regulation (EU) 2019/1700. When adopting those implementing acts, the Commission shall give reasons justifying the inclusion of any variables and breakdowns already collected pursuant to that Regulation. Those implementing acts shall not require data that, by their nature, can only be collected directly from individuals. 7. The implementing acts adopted pursuant to paragraph 5 of this Article shall be adopted in accordance with the examination procedure referred to in Article 17(2). They shall be adopted at least 18 months before the beginning of the relevant reference time, except in relation to: (a) the first reference times as set out in Article 6(5), for which the implementing acts shall be adopted at least 12 months before the beginning of the relevant reference time; and (b) the population and housing census, for which the implementing acts shall be adopted at least 24 months before the beginning of the year in which the reference date falls. The Commission shall ensure that those implementing acts do not impose a significant additional burden or cost on Member States or on the respondents. 8. Feasibility or pilot studies as referred to in Article 13 shall be carried out and their results shall be duly assessed and taken into account before any modification of the breakdowns referred to in paragraph 5, point (a), of this Article. 9. The Commission is empowered to adopt delegated acts in accordance with Article 16 to supplement this Regulation by setting out the information to be provided by Member States for a maximum of three reference years, provided that the collection of additional data within the scope of this Regulation is deemed to be necessary for the purpose of addressing additional statistical data needs that cannot be otherwise fulfilled. In particular, the delegated acts referred to in this paragraph shall not result in an obligation to conduct a new statistical survey. Those delegated acts shall set out: (a) the detailed topics to be covered pursuant to this paragraph, related to the domains and topics specified in the Annex, and the reasons for such additional statistical data needs; (b) in relation to the detailed topics referred to in point (a), the periodicity, reference times, transmission deadlines and territorial levels. Those delegated acts shall not apply to reference times before 2030 and shall provide for a minimum of two years between the reference times for each additional data collection. Those delegated acts shall not introduce statistics requirements with reference times falling within the reference years referred to in Article 6(2). Feasibility or pilot studies as referred to in Article 13 shall be carried out and their results taken into account before the adoption of any delegated act pursuant to the first subparagraph of this paragraph. 10. The Commission shall adopt implementing acts to specify the additional information referred to in paragraph 9 and relevant metadata. Those implementing acts shall set out: (a) a list of variables, their technical specifications and breakdowns, provided that the territorial breakdowns are not more detailed than the territorial levels set out in the corresponding delegated act referred to in paragraph 9, second subparagraph, point (b), of this Article; (b) detailed specifications of the statistical units and metadata; (c) statistical classifications to be used; (d) the technical formats for data sets and metadata transmission and further specifications, where needed and justified. The implementing acts referred to in the first subparagraph of this paragraph shall be adopted, in accordance with the examination procedure referred to in Article 17(2), by 18 months before the beginning of the relevant reference time. Feasibility or pilot studies as referred to in Article 13 shall be carried out and their results taken into account before the adoption of any implementing act. 11. The studies referred to in paragraph 4, point (b), in paragraph 8, in paragraph 9, fourth subparagraph, and in paragraph 10, third subparagraph, of this Article shall be financed in accordance with Article 14.