Renting out a property through Airbnb — or any other short-term rental platform — without complying with the applicable rules can result in a penalty file with fines running into the tens or even hundreds of thousands of euros. In 2026, the legal framework governing these fines no longer depends on a single law: it combines EU regulation, regional tourism legislation, municipal ordinances and, following the Spanish Supreme Court's May 2026 ruling, a landscape quite different from the one that existed barely a year earlier regarding national registration. This guide brings together the whole framework currently in force and explains, step by step, which conduct is penalised, how much it can cost and how to defend yourself.

There is no single "Airbnb law" in Spain. The sanctions regime that applies to a host is built by combining several regulatory layers, and all of them must be checked before concluding that a property is operating legally:

  • EU regulation: Regulation (EU) 2024/1028 on the collection of data on short-term accommodation rental services, which requires platforms to transmit information to the authorities.
  • National regulation: Royal Decree 1312/2024, which transposed that EU regulation and created the Digital Single Window for Rentals, together with consumer protection rules that can sanction the platforms themselves for unfair commercial practices.
  • Regional tourism legislation: each autonomous community has its own tourism law, defining what counts as a short-term rental property, requiring a licence or responsible declaration, and setting out the applicable infringements and penalties.
  • Municipal ordinances and urban plans: city councils such as Barcelona, Madrid or Palma can zone, restrict or directly freeze the granting of new licences in certain areas.

To know whether a specific property can be sanctioned, all four levels should be checked at the same time, because non-compliance with any one of them can trigger an independent penalty file.

The €64 million fine against Airbnb: what it means for hosts

At the end of 2025, Spain's Ministry of Social Rights, Consumer Affairs and Agenda 2030 imposed a €64,055,311 fine on Airbnb for keeping more than 65,000 listings online for properties without a tourism licence or with a registration number that did not correspond to the property advertised. In March 2026, the High Court of Justice of Madrid rejected Airbnb's request to suspend payment as a precautionary measure, so the fine is final at the administrative level, without prejudice to any judicial appeal the platform may continue to pursue.

This fine targets the platform, not each host directly, but it has an important practical consequence: Airbnb has had to remove, on a large scale, listings that could not show a valid licence number. A host whose listing was removed for this reason does not automatically receive a personal fine, but is exposed to the risk that the competent regional or municipal authority opens its own case if it detects that the property was operating without authorisation.

Important:

The fact that the platform has been fined for irregular advertising does not exempt the owner from their own administrative liability. These are independent penalties: one falls on the intermediary for its consumer and transparency obligations, and another can fall on the owner of the property for operating without the tourism licence required in their autonomous community.

The end of the NRUA: the Supreme Court's May 2026 ruling

Since 1 July 2025, it had been mandatory, to advertise a short-term rental property on digital platforms, to hold a Single Rental Registration Number (NRUA), issued by the Land Registrars under Royal Decree 1312/2024. This national requirement no longer applies: Supreme Court Ruling No. 620/2026, of 19 May 2026, deciding an appeal brought by the Generalitat Valenciana, annulled the national Single Rental Register procedure for encroaching on regional powers, although it kept the Digital Single Window in place as an infrastructure for data exchange between authorities.

In practice, this means that:

  • The NRUA number is no longer required to publish a listing on Airbnb, Booking or any other platform.
  • The annual booking report linked to the NRUA has been abolished.
  • The identifier that platforms must require is once again the regional tourism registration or licence number issued by each autonomous community, which regains its central role.
  • NRUA applications that were rejected, suspended or pending correction lose their legal basis, and anyone who paid fees during processing may claim a refund.
What hasn't changed:

The annulment of the NRUA does not amount to any deregulation of the sector. Regional and municipal tourism licences, the requirement for a responsible declaration, the guest registration obligation and each autonomous community's sanctions regime remain fully in force — and are, in fact, the main basis on which Airbnb hosts in Spain are sanctioned today.

Most common infringements in Airbnb-style rentals

Regardless of the specific autonomous community, the conduct that most frequently leads to a penalty file against an Airbnb host includes:

  • Operating without the licence, responsible declaration or tourism registration required by regional legislation.
  • Not displaying the licence or registration number in the listing published on the platform.
  • Breaching the municipal zoning or moratorium applicable to the property's specific address.
  • Exceeding the maximum occupancy authorised by the licence.
  • Failing to register guests with the relevant police force (Policía Nacional, Mossos d'Esquadra or other regional bodies, depending on the territory) within the legal 24-hour deadline.
  • Renting out without the homeowners' association authorisation required since April 2025, where applicable.
  • Not paying the tourism taxes or fees applicable in the relevant autonomous community.

The absence of any of these elements can be processed as an independent penalty file, so it is not enough to check that the property "has a licence": overall compliance needs to be reviewed.

Fine amounts: how much can it cost to operate without a licence

Each autonomous community has its own tourism law and, therefore, its own fine amounts, but most follow a very similar three-tier scheme. As a general guide:

  • Minor infringements: generally between a few hundred euros and 3,000 euros, for formal or informational shortcomings.
  • Serious infringements: typically between 3,000 and 60,000 euros, the category that usually covers operating without a licence or exceeding the authorised occupancy.
  • Very serious infringements: from 60,000 up to 600,000 euros in most regions, reserved for repeated non-compliance, recidivism or cases with greater impact on third parties.

Regions such as Catalonia (Llei 13/2002), Madrid, Andalusia, the Valencian Community or the Balearic Islands apply ranges of this order, although with their own nuances: the Balearic Islands and the Canary Islands, for example, combine these amounts with especially strict moratoriums and limits on the number of tourism beds per area, which makes the risk of a fine for operating outside the permitted period or zone even higher. In addition to the financial penalty, the sanctioning decision usually includes an immediate cessation of the activity and an order to remove the listing from the platform.

Important:

The final amount of the fine depends on the specific classification of the infringement, whether there is recidivism, and any mitigating or aggravating circumstances that must be assessed case by case. It should not automatically be assumed that the maximum amount provided for by law will apply, nor that a notified fine is final and binding without the available defence routes having been exhausted.

Homeowners' association: the three-fifths majority

Since 3 April 2025, Organic Law 1/2025 amended Article 17.12 of the Horizontal Property Act and reversed the general rule: tourism activity in a property subject to horizontal property rules is now prohibited unless expressly authorised by the homeowners' association. That authorisation requires a favourable vote from three-fifths (3/5) of all owners who, in turn, represent three-fifths of the participation quotas — a double quorum that must be met simultaneously.

The same majority allows the association to limit, condition or directly prohibit the activity, as well as to approve a surcharge of up to 20% on the common expenses quota for tourism properties, to compensate for the greater use of common areas. Renting out on Airbnb without this authorisation, where required, not only creates a conflict with the association: it can also fuel a complaint to the competent tourism authority.

The reform is not retroactive: anyone who was already legally carrying out the activity before 3 April 2025 keeps that right, without prejudice to the association being able to use the same three-fifths majority later to introduce limits or surcharges going forward.

Platform liability towards hosts and guests

Airbnb, Booking and other intermediary platforms have their own obligations, distinct from those of the host: they must verify that a valid registration or licence number exists before publishing a listing, they must cooperate with authorities by providing aggregated booking data, and they can be sanctioned, as has happened, for unfair commercial practices towards consumers. This layer of platform liability coexists with — but does not replace — the administrative liability of the property owner or manager, who must still be able to show the tourism licence, urban planning compliance and, where applicable, the homeowners' association authorisation.

If you receive a penalty file or a complaint about your Airbnb

Faced with a cease-and-desist order, a neighbour complaint or a penalty file linked to a short-term rental property, it is worth distinguishing several lines of defence depending on the stage of the procedure:

  • Submissions during the investigation phase of the file, to challenge the facts alleged or provide exculpatory evidence.
  • Administrative appeal against the sanctioning decision, within the corresponding legal deadline.
  • Judicial review appeal (recurso contencioso-administrativo) once the administrative route has been exhausted without a favourable outcome.
  • In certain cases, challenging a licence refusal or revocation where there are reasonable doubts about the correct application of regional or municipal regulations to the specific property.

Deadlines are strict and missing them can close off the defence route, so it is advisable to act from the very first moment the notification is received, without waiting for the fine to become final.

Frequently asked questions

How much can a fine be for operating an unlicensed Airbnb in Spain?

It depends on the autonomous community, but most tourism laws set serious infringements between 3,000 and 60,000 euros, and very serious ones between 60,000 and 600,000 euros, in addition to the closure of the activity.

Is the NRUA number still required to list a property on Airbnb?

No. The Supreme Court annulled, through ruling 620/2026, the national Single Rental Register procedure. The identifier now required is once again the regional tourism registration or licence number.

Why did the Spanish government fine Airbnb 64 million euros?

For keeping more than 65,000 listings online without a tourism licence or with an incorrect registration number, in a case that became a final decision at the end of 2025.

Do I need my homeowners' association authorisation to rent on Airbnb?

Since 3 April 2025, yes, unless the activity was already being carried out legally before that date. Authorisation requires a three-fifths majority of both owners and quotas.

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