1.1. Contact organisation
National Institute of Statistics (INS), Romania.
1.2. Contact organisation unit
Price Statistics Department
1.3. Contact name
Restricted from publication1.4. Contact person function
Restricted from publication1.5. Contact mail address
16 Libertatii Bvd. Bucharest 5, 050706, Romania.
1.6. Contact email address
Restricted from publication1.7. Contact phone number
Restricted from publication1.8. Contact fax number
Restricted from publication2.1. Metadata last update
13 November 20242.2. Metadata last certified
13 November 20242.3. Metadata last posted
13 November 20243.1. Data description
The OOHPI is based on the ‘net acquisitions’ approach, which measures changes in prices paid by households for the acquisition of dwellings that are new to the household sector and changes in other costs related to the ownership, and transfer of ownership, of dwellings.
3.2. Classification system
The OOHPI is broken down into the following expenditure categories:
- O.1. Owner-occupiers’ housing expenditure;
- O.1.1. Acquisitions of dwellings;
- O.1.1.1. New dwellings;
- O.1.1.1.1. Purchases of newly built dwellings;
- O.1.1.1.2. Self-build dwellings and major renovations;
- O.1.1.2. Existing dwellings new to households;
- O.1.1.3. Other services related to the acquisition of dwellings;
- O.1.1.1. New dwellings;
- O.1.2. Ownership of dwellings;
- O.1.2.1. Major repairs and maintenance;
- O.1.2.2. Insurance connected with dwellings;
- O.1.2.3. Other services related to ownership of dwellings.
- O.1.1. Acquisitions of dwellings;
3.3. Coverage - sector
Households which are owner occupiers.
3.4. Statistical concepts and definitions
The main statistical variables are price indices.
3.5. Statistical unit
The basic unit of statistical observation are transaction prices of dwellings new to the household sector and of other products that the households acquire in their role as owner-occupiers.
3.6. Statistical population
The target population is set of all transactions of dwellings new to households sector and also, other owner-occupiers’ housing expenditure are covered (e.g. costs related to the transfer of ownership, costs related to the ownership.
3.7. Reference area
Entire area of the country is covered.
3.8. Coverage - Time
Data available starting with the index of the first quarter of 2010 for the entire system of indices as described above (point 3.2 Classification system).
3.9. Base period
2015=100.
The following units are used:
- Index point;
- Percentage change on the same period of the previous year (rates);
- Percentage change on the previous period (rates);
- Percentage share of the total (weights).
OOHPI is a quarterly statistics.
6.1. Institutional Mandate - legal acts and other agreements
Regulation (EU) 2016/792 of the European Parliament and of the Council of 11 May 2016 on harmonised indices of consumer prices and the house price index.
Commission Implementing Regulation (EU) 2023/1470 of 17 July 2023 laying down the methodological and technical specifications in accordance with Regulation (EU) 2016/792 of the European Parliament and of the Council as regards the house price index and the owner-occupied housing price index, and amending Commission Regulation (EU) 2020/1148
There are no national legal acts related to OOH.
6.2. Institutional Mandate - data sharing
In 2008, a cooperation protocol was signed between the NIS, the Union of Public Notaries from Romania and the National Bank of Romania in order to carry out statistical research on real estate prices. This protocol aims to regulate the common base of activities between the 3 institutions, in order to carry out statistical research and build real estate indices by the NIS the Union of Public Notaries from Romania and the National Bank of Romania have access to price indices obtained by data processing, as well as to other statistics developed by NIS by processing data collected based on the signed protocol.
7.1. Confidentiality - policy
Data is published to the level of detail described above (point 3.2. Classification system).
7.2. Confidentiality - data treatment
Not applicable.
8.1. Release calendar
OOHPI is not published nationally.
8.2. Release calendar access
The quarterly OOHPI data are published on the Eurostat Website at the same time as house price statistics (see Eurostat release calendar).
8.3. Release policy - user access
OOHPI quarterly data are disseminated on the Eurostat website.
Quarterly (OOHPI) and annually (weights).
10.1. Dissemination format - News release
Not applicable.
10.2. Dissemination format - Publications
Not applicable
10.3. Dissemination format - online database
Not applicable.
10.4. Dissemination format - microdata access
Not disseminated.
10.5. Dissemination format - other
The data based 2015=100 is provided by the INS-Romania and published on Eurostat on-line database.
10.6. Documentation on methodology
OOHPI is based on methodological guidelines provided in "Technical manual on Owner-Occupied Housing and House Price Indices".
10.7. Quality management - documentation
Not available.
11.1. Quality assurance
All data are checked for completeness and consistency with statistical concepts and definitions.
OOHPI are produced in compliance with OOHPI methodological requirements of the Owner-Occupied Technical Manual.
11.2. Quality management - assessment
The quality of the OOHPI is reviewed using a framework based on the OOH Technical Manual and the European Statistical System (ESS) definition of quality.
12.1. Relevance - User Needs
The OOHPI responds, on the one hand, to the needs of all individual users interested in the behavior of the domestic house price market and, on the other, to the needs of the European Central Bank and Commission for a set of indicators monitoring the stability of the house price market.
12.2. Relevance - User Satisfaction
Not available.
12.3. Completeness
The OOHPI meets the specifications set out in the Regulation.
13.1. Accuracy - overall
The accuracy of the OOHPI is assured by following Eurostat's methodological recommendation.
13.2. Sampling error
Not available.
13.3. Non-sampling error
Not available.
14.1. Timeliness
OOHPI is not disseminated nationally.
14.2. Punctuality
The OOHPI is normally transmitted before the deadline.
15.1. Comparability - geographical
Not applicable.
15.2. Comparability - over time
Data are comparable over time, first index is the 2010 first quarter index.
15.3. Coherence - cross domain
OOHPI covers the transactions of dwellings, having a private household as buyer and non-household as seller.
Transaction prices are used for computing the indices.
The structure is described on point 3.2. Classification system.
Any comparisons with other indices shall have these in mind.
15.4. Coherence - internal
Data are checked for internal consistency.
Not applicable.
17.1. Data revision - policy
Not available.
17.2. Data revision - practice
The general public is informed on the revisions through the statistical publications.
18.1. Source data
See below.
18.1.1. Prices
The OOHPI are based on the following data sources:
- Purchase of new dwellings: Index figures are compiled on the basis of transaction prices and characteristics on dwellings collected through the Public Notaries Offices, all the transactions of dwellings are registered and authorized by public notaries;
- Self-build dwellings and major renovations: Statistical domains ( construction statistics);
- Other services related to the acquisition of dwellings: Index figures are compiled on the basis of transaction prices and characteristics on dwellings collected through the Public Notaries Offices, all the transactions of dwellings are registered and authorized by public notaries;
- Insurance connected with dwellings: statistical domain (CPI data);
- Major repaires and maintenance: Statistical domains (construction statistics).
18.1.2. Weights
Statistical domains (construction statistics, CPI) and other sources are used for the compilation of the weights.
18.2. Frequency of data collection
Data are collected monthly.
18.3. Data collection
Data are collected through an electronic format. The electronic data are transmitted by e-mail, the files resulted through the developed application are transmitted to a dedicated address.
Electronic data are transmitted based on a Protocol established between three institutions: National Bank of Romania, National Union of the Notaries Public from Romania, National Institute of Statistics.
18.4. Data validation
Data are checked for internal consistency. Data are validated considering several variables, correlations between variables meant to identify possible errors which disturb the quality of the statistical results.
The collected data were cleaned taking into account the results on the analyze of the market value of transaction price range, the quality of input data on total useful area on the flats, the information on the useful area according to the legislation, the expert guidance on the appraisals indicative values of real estate.
18.5. Data compilation
See below.
18.5.1. Calculation and Aggregation
See below.
18.5.1.1. Index formulae
The Romanian OOHPI is calculated on a quarterly basis as a chained Laspeyres-type index, with annual weights.
18.5.1.2. Aggregation method
Weighted aggregation of the OOH component indices.
18.5.1.3. Derivation of sub-index and elementary aggregate weights
The weights reference period is year t-1, and these weights are price updated to the last quarter of year t-1.
18.5.1.4. Price updating
The weights reference period is year t-1, and these weights are price updated to the last quarter of year t-1.
18.5.1.5. Chaining and linking method
Indexes are chained annually with the fourth quarter of the previous year as the link period.
18.5.2. Other processing issues - OOH sub-indices for purchases of newly built dwellings and existing dwellings new to households
See below.
18.5.2.1. Timing for pricing
Transfer of ownership.
18.5.2.2. Treatment of VAT
VAT is not included in the price of newly built dwellings.
18.5.2.3. Treatment of other taxes
Other taxes are not included in the price of dwellings.
18.5.2.4. Treatment of government subsidies
Not applicable.
18.5.2.5. Treatment of land
Land values are included in prices.
18.5.2.6. Housing cooperatives
Housing cooperatives are not included.
18.5.2.7. Treatment of non-market transactions
The possible 'non-market' transactions are excluded from the calculation of the index.
18.5.2.8. Treatment of multi-object transactions
The transactions including more than one dwelling, if there is no possibility to split the value for each dwelling, are excluded. The exchange of dwellings transactions are excluded as well.
18.5.2.9. Treatment of fractional transactions
The fractional transactions are excluded.
18.5.3. Other processing issues - OOH sub-indices other than OOH sub-indices for purchases of newly built dwellings and existing dwellings new to households
See below.
18.5.3.1. Elementary aggregate formulae
Computation method:
- Lowest level indices: hedonic method (rolling time dummy window method) - O.1.1.1.1. Purchases of newly built dwellings and O.1.1.3. and Other services related to the acquisition of dwellings;
- Indices for: O.1.1.1.2. Self-build dwellings and major renovations; O.1.2.1. Major repairs and maintenance; O.1.2.2. Insurance connected with dwellings are obtained from other statistical surveys (construction statistics, CPI);
- Upper level indices: Laspeyres price index.
18.5.3.2. Replacements
Not applicable.
18.5.3.3. Quality adjustment
The hedonic method (rolling time dummy window method) is used to adjust for the quality-mix of properties transacted in different periods.
18.5.3.4. Missing prices
Not applicable.
18.5.3.5. Discounts and inducements
Not applicable.
18.5.3.6. Zero prices
Not applicable.
18.5.3.7. Treatment of VAT
No.
18.6. Adjustment
Not applicable.
None.
The OOHPI is based on the ‘net acquisitions’ approach, which measures changes in prices paid by households for the acquisition of dwellings that are new to the household sector and changes in other costs related to the ownership, and transfer of ownership, of dwellings.
The main statistical variables are price indices.
The basic unit of statistical observation are transaction prices of dwellings new to the household sector and of other products that the households acquire in their role as owner-occupiers.
The target population is set of all transactions of dwellings new to households sector and also, other owner-occupiers’ housing expenditure are covered (e.g. costs related to the transfer of ownership, costs related to the ownership.
Entire area of the country is covered.
OOHPI is a quarterly statistics.
The accuracy of the OOHPI is assured by following Eurostat's methodological recommendation.
The following units are used:
- Index point;
- Percentage change on the same period of the previous year (rates);
- Percentage change on the previous period (rates);
- Percentage share of the total (weights).
See below.
See below.
Quarterly (OOHPI) and annually (weights).
OOHPI is not disseminated nationally.
Not applicable.
Data are comparable over time, first index is the 2010 first quarter index.