For the time being, owners of holiday homes in Spain no longer need to apply for a national NRA number ( Número de Registro de Alquiler ) to offer their properties via platforms such as Airbnb or Booking.com. The Spanish Supreme Court has declared the national registration system for short-term rentals invalid, thereby eliminating a major administrative obligation for owners of tourist accommodations.

The ruling provides a great deal of clarity for foreign owners who rent out a property in Spain. At the same time, this does not mean that control over holiday rentals is disappearing. Regional rules remain in force, and other control mechanisms will also continue to exist.

Supreme Court annuls national register

The NRA number was part of a national registration system introduced by the Spanish government to better monitor the tourist rental market. Owners had to register and obtain a unique identification number before they could offer their property via online rental platforms.

However, on May 21, 2026, the Spanish Supreme Court ( Tribunal Supremo ) ruled that the central government had exceeded its powers. According to the court, tourism and a large part of the regulations surrounding holiday rentals fall under the jurisdiction of the autonomous regions, which already have their own registration systems. As a result, the national register was declared invalid, and the obligation to apply for an NRA number also lapsed.

More information about the judgment can be found on the official website of the Tribunal Supremo .

Control over rentals remains in place

The ruling does not mean that the Spanish government is completely losing its oversight of the rental market. The judgment relates exclusively to the national registration system. Other instruments intended to collect information on rental activities remain in place.

Thus, the so-called Ventanilla Única Digital , a digital platform for the exchange of data between rental platforms and government agencies, is retained. According to the ruling, the obligation for online rental platforms to provide certain data to the government also remains in effect. The Supreme Court therefore clarifies that monitoring and data exchange are possible, but that an additional national register on top of the existing regional systems is not necessarily required for this.

What does this mean for foreign owners?

For Belgians and Dutch nationals with a property in Spain, it is primarily the administrative framework that changes. The elimination of the NRA number does not mean that owners can rent out their properties without formalities from now on. The regulations of the autonomous region where the property is located remain decisive.

Anyone renting out a property to tourists must therefore still comply with local and regional regulations. In many regions, a permit, notification requirement, or registration in a regional tourism register remains necessary to rent out legally. It is therefore important that owners continue to check which obligations apply in their specific region.

Possible consequences for thousands of homes

The ruling could also have implications for owners who previously experienced problems due to the lack of a national registration number. Spanish media point out that thousands of homes were deemed irregular or even illegal because they were not included in the national register, despite the fact that they may have complied with regional regulations.

Particularly in Andalusia, a significant number of homes are said to be involved. According to Spanish reports, more than 25,000 holiday homes were targeted there because they were not included in the national system. The ruling could create a significant legal opening for some of these owners.

European regulations also played a role.

The discussion was not limited to Spain alone. The national registration system had been introduced, among other things, within the framework of European rules intended to bring more transparency to the short-term rental market. These European regulations require Member States to collect and exchange data on rental activities.

According to the Supreme Court, however, it does not follow from this that Spain is obliged to establish a single central register that stands above the existing regional systems. The Court ruled that the European rules can also be applied without infringing upon the powers of the autonomous regions.

New discussion between Madrid and the regions

The ruling once again exposes the tensions between the Spanish central government and the autonomous regions. Madrid wants to gain more control over the growing holiday rental market, partly due to the impact on the housing market in popular tourist cities and coastal areas.

However, the regions point out that they are traditionally responsible for tourism, housing policy, and the associated permits. According to them, the central government may not impose additional systems that replace or overlap with existing regional registrations.

Government continues to defend the system

The Spanish Ministry of Housing continues to stand by the original measure. According to the ministry, since its introduction in July 2025, the system has helped detect numerous irregularities in the rental market. In addition, hundreds of thousands of homes have reportedly been successfully registered, for both tourist rentals and temporary rentals.

Nevertheless, the ruling leaves little room for interpretation. The Supreme Court acknowledges that control of the rental market and data exchange are legitimate objectives, but rules that a central Spanish register superimposed on the regional registers is not legally tenable.

For landlords, the most important message therefore remains unchanged: strictly follow the rules of the autonomous region in which the property is located. In the coming weeks and months, it will become clear exactly what practical consequences the ruling will have for owners, platforms, and governments.