1. The RPPI is based on data provided by the tax authority.

2. The RPPI aggregates the indices of apartments, maisonettes and houses using a Laspeyres-type formula. The weights used to compile the index are based on the value of transactions for the three property types. Moreover, the RPPI is chain-linked every year. This enables the revision of weights on an annual basis.

3. It is widely recognised that the price of a property is dependent on its location, type, state of maintenance and finish, age, tenure, the number of bedrooms and bathrooms, size, and the availability of other amenities such as a yard, garden and pool. Since the characteristics of the properties transacted are likely to vary between periods, a methodology that accounts for such differences could be employed to ensure even greater comparability across periods. From Q1/2023 a quality-adjusted index is being compiled using the rolling time dummy method. More information about this methodological change can be accessed here.

4. In order to provide a more comprehensive picture of the housing market, house sales indicators are also provided on Eurostat’s website. The house sales indicators refer to the total number and value of dwellings transacted at national level where the purchaser is a household, partitioned into new and existing while using information available from the same source as used for prices and weights. Eurostat publishes in its database a quarterly and annual house sales index, quarterly and annual rates of change as well as the number of transacted dwellings and their value in national currency. These indicators can be accessed here.

The RPPI and the House Sales Indicators follow the same metadata which can be accessed here.

These two projects listed in notes 3 and 4 were part of grant SMP-ESS-2022-RES-IBA – Real Estate Statistics, aimed at improving the Residential Property Indicators.

5. No distinction is made between new and old dwellings.

6. Around 1,400 transactions are considered every quarter.