The current situation on Mallorca
The pressure on illegal holiday rentals reached a completely new level in 2025 and 2026. The Consell de Mallorca carried out over 3,000 inspections in the summer of 2025 - around 19 percent more than in the previous year. On Mallorca alone, 4,400 illegal listings were removed from Airbnb, taking roughly 20,000 tourist beds off the market.
The scale of the problem is illustrated by one figure: according to the island council's official analysis, around 39.5 percent of all holiday rental listings on Mallorca are unregistered and therefore illegal. That covers 7,978 of the 20,204 listings examined, corresponding to more than 42,000 tourist places without an official licence.
Behind the crackdown lies political will that reaches beyond the Balearic Islands. At the end of 2025 Spain imposed a fine of around 64 million euros on Airbnb for continuing to allow listings without registration numbers. Simultaneously, around 66,000 illegal listings were deleted from the platform across Spain as a whole.
For you as the owner of an apartment or finca, this means: the era when a holiday rental without a licence could run quietly under the radar is over. Inspections are no longer random - they are systematic.
Note: this article informs, it does not encourage reporting
The text shows you how the authorities operate so that you can assess your own risks realistically and find the legal route. It is not a call to report neighbours or fellow residents.
How automated detection works
The Consell de Mallorca has been working with the specialist technology company Talk&Code since 2024. According to the responsible department, its software has analysed over 400,000 listings on four platforms and processed more than ten million data points. The technical process runs in several stages.
Stage 1: Platform scraping
The tools regularly pull public listings from Airbnb, Booking, Vrbo and Holidu. They capture titles, descriptions, photos, prices, availability calendars and the approximate GPS coordinates. For data protection reasons, platforms usually only show a rough map circle rather than the exact address.
Stage 2: Geolocation with AI
The software resolves exactly that circle. Modern image analysis compares photos from the listing with satellite images, Google Street View and public property portals. Distinctive features - pool shape, roof colour, fence line or the view from a window - help assign the property to a precise address. On Ibiza this method caused Airbnb listings to fall from 4,324 to 2,051 within a few months - almost halved.
Stage 3: Comparison with the official register
Once the address is established, the system checks it against the ETV register held by the island council. If the registration number is missing or forged, the listing is flagged as illegal. According to data from the proceedings against Airbnb, 4,289 of the 4,305 Mallorca listings in question had no registration number at all; 16 had a forged one.
Stage 4: Cross-check with additional databases
The next step brings further checks. The cadastre provides details of the owner, the land registry shows encumbrances and mortgages, and the registration data (Padrón) shows who is officially resident in the property. Where a tourist listing and the registered residents do not match, a clear suspicion arises.
Stage 5: EU reporting obligation from May 2026
From 20 May 2026, EU Regulation 2024/1028 applies in full. Platforms must then report data monthly to the Ventanilla Única Digital, including the registration number, the exact address of the property, the URL of the listing, the number of overnight stays and the number of guests. The Ministerio de Vivienda in Madrid passes this data to the Balearic Islands. That removes the anonymity of listings entirely.
Note: the reporting obligation also applies to existing listings
The EU Regulation also applies to existing listings. Anyone listing today without a registration number will inevitably appear in the monthly data deliveries once the Regulation takes full effect.
Further investigation methods
Alongside the digital tools, the Consell uses classic methods that are hard for property owners to anticipate.
Neighbour tip-offs are a key trigger, despite the silence maintained by the authorities on individual cases. In 2025 the island council set up two official channels for queries and complaints. Recurring suitcases with wheels in the stairwell, frequent changes of occupants and noise complaints land there quickly.
Utility usage patterns also provide signals. If a property's water and electricity consumption fluctuates sharply by season and always peaks in parallel with booking windows during high season, this stands out during targeted checks.
Concierge services and property managers report suspicious activity, particularly in Palma. Some owners' associations (Comunidad de Propietarios) have explicitly amended their statutes to prohibit tourist use, making internal monitoring easier.
Tax plausibility is another avenue. The Agencia Tributaria cross-references income declarations with data from platforms. Since the DAC7 directive, platforms report hosts' income directly to the Spanish tax authority. Anyone who has not declared their earnings therefore also faces a tax audit on top of everything else.
The legal framework
Three levels of law interact for you as a landlord.
Balearic Islands level. The tourism law Ley 8/2012 forms the basic framework. Ley 6/2017 tightened the regulation of short-stay lettings in apartments and introduced the ETV and DRIAT system. The 2022 reform brought the moratorium on new licences. In 2025 a new process followed with a key date of 1 May 2026.
Spanish national level. Since 1 July 2025, Real Decreto 1312/2024 is in force. It creates the unified rental registration number NRUA and the Ventanilla Única Digital. Every short-term rental in Spain needs this number in addition to the local licence.
EU level. EU Regulation 2024/1028 has been in force since 19 May 2024 and must be fully applied by 20 May 2026. It makes platform data reporting and the obligation to display the registration number in every listing mandatory across the EU.
These three levels interlock. If you have an ETV but no NRUA, you will again be in the spotlight once the EU Regulation takes full effect. Regular review of your own paperwork is therefore essential.
Decreto-Ley 4/2025: what changed in 2025
The most significant tightening at Balearic level since the moratorium is Decreto-Ley 4/2025 of 11 April 2025. It has been in force since 16 April 2025 and its full title carries the addition "contra la oferta ilegal" - directed against the illegal supply.
The decree introduces three core points. First, no new tourist places are granted in apartment buildings (pluriviviendas) anywhere in the Balearic Islands. New places are only available via a one-for-one swap: an owner must first deregister an existing place so that an equivalent place can be granted somewhere else. Second, the maximum fine for the most serious cases has been raised, up to 500,000 EUR per dwelling. Third, the island councils' powers to order immediate closure have been reinforced.
The decree does not change the rules for renewing or transferring existing ETV and ETVPL licences. Anyone holding a valid licence can still renew and transfer it under the previous rules. Owners of an apartment with a transferable ETVPL in a multi-family building actually benefit indirectly: because new places in this category are effectively frozen, the market value of existing licences rises.
If you are buying an apartment in a multi-family building with the intention of letting it to tourists, the licence clause in the purchase contract is now the decisive point. An apartment without a transferable ETVPL cannot be used legally for tourist letting for the foreseeable future.
The fine scale
The tourism law scales penalties according to the seriousness of the violation and whether you are classified as owner, operator or platform.
For owners and operators:
Letting without an ETV or DRIAT is treated as a serious violation. The fine range is between 20,001 and 40,000 EUR per dwelling. For repeated or particularly serious misconduct - such as a forged registration number - the fine can reach up to 400,000 EUR. Decreto-Ley 4/2025 raised the ceiling for the most serious cases further, to up to 500,000 EUR per dwelling.
For platforms:
Airbnb, Booking, Vrbo and Holidu are liable if they publish illegal listings. The range here is up to 400,000 EUR per listing. The fine of over 64 million euros against Airbnb at the end of 2025 shows that the Spanish authorities are prepared to act firmly against major platforms as well.
Recent record cases:
In Palma in October 2025, a block of flats in the Llevant district was hit with cumulative fines of over 300,000 euros after several apartments were let to tourists without permission. Another Mallorca case reached 1.3 million euros. On Menorca a single owner was charged over 400,000 euros.
The 80% reduction:
The law provides for a reduction of the fine of up to 80 percent if the property is voluntarily returned to the residential market. Tourist letting gives way to long-term residential letting for at least one year. This incentive is politically deliberate, as the housing shortage in Palma is one of the main drivers of the reform.
Note: these fines are not negotiable like parking tickets
A fine notice in the six-figure range comes with an administrative procedure and can lead to forced execution against the property if you cannot pay. You should not deal with such notices without a specialist lawyer.
What happens after detection
The Consell has been able to act quickly since the last reform. Once a listing is identified as illegal, several things happen in parallel.
First, the platform receives a demand to remove the listing. Airbnb and others now cooperate contractually and delete within a short time. In parallel, an administrative procedure is opened against you as the owner. You receive a hearing letter and can respond. In more serious cases the island council can order immediate closure even before a final decision has been made. This power was strengthened at the end of 2025.
After the notice is served you typically have one month to appeal or to pay. Prompt payment without appeal attracts a discount. Without any response, forced execution follows and in individual cases an entry in the land register.
Further costs arise for you as the owner. Platforms report income to the tax authorities, which can trigger a review. If you have not declared the income, you face back-payments, late-payment interest and potential offences under the Ley General Tributaria.
The legal route to an ETV
Since 2022 a moratorium on new ETV licences has been in place. With the 2025 decision, the Consell established a new process that allows transitional rules and limited new licences from 2026 onward.
How to get a legal basis today:
First option: you buy a property with an existing and transferable ETV or ETVPL licence. The licence is attached to the property and can be sold with it. The purchase price reflects this value. Check the licence in the register and have the purchase contract reviewed by a Spanish lawyer before you sign.
Second option: you apply for a new quota allocation in the CBAT process. The Consell regularly publishes the number of new licences available and the zones in which they are being issued. The application runs through the new process with a key date of 1 May 2026 and requires that your property is in an approved zone.
Third option: existing ETVPL licences have been renewable since February 2023. The renewal application must be submitted before the five-year deadline expires. Without a timely application the licence lapses.
Obligations after licensing:
Having an ETV does not mean you are done. You also need the NRUA via the Ventanilla Única Digital, a current Cédula de Habitabilidad (habitability certificate), the energy certificate, public liability insurance and registration for the tourism eco-tax (Impuesto del Turismo Sostenible). You must report guests to the Policía Nacional. You declare the income in your Spanish income tax return (IRPF or IRNR, depending on your tax status).
Alternatives without an ETV licence
If you cannot obtain an ETV or do not want one, there are legal ways to generate income from your property.
Long-term letting. Tenancy agreements under the Ley de Arrendamientos Urbanos do not require an ETV. The minimum period is one year with an extension option of up to seven years. You can find details in the guide to renting an apartment on Mallorca and in the article on tenancy contracts.
Seasonal letting (arrendamiento temporal). This contract type allows a fixed-term tenancy of several weeks to months where the tenant has an objective reason - typically a work posting, study, medical treatment or seasonal work. Without such a reason, the letting is treated as disguised tourist use and falls back under the tourism law.
Pensiones and Agroturismo. For fincas in certain rural zones there are separate licence types such as Agroturismo or Turismo de Interior. They have different requirements but allow legal tourism income in the countryside.
Owner use without letting. If you use the property exclusively yourself and only have family or friends to stay free of charge, you do not fall under tourism law. As soon as money changes hands, however, the use counts as letting.
Tip: have your specific situation checked
The line between permitted seasonal letting and disguised tourist rental is narrow in individual cases. A specialist property lawyer can review your tenancy agreement and document the tenant's objective reason in a legally secure way.
Risks and verification for guests
So far the focus has been on owners. But guests who book an illegal holiday rental also carry real risks. They are generally not fined themselves, but they can still lose in several ways.
What you risk as a guest. If the listing is flagged as illegal by the Consell during your stay and closure is ordered, you have to leave the property. Refunding your money is then a matter between the platform and the owner, and there is no automatic entitlement. Consumer protection rights under the Package Travel Directive only apply to a limited extent when you book accommodation on its own. Some travel insurance policies expressly exclude damages relating to unlicensed accommodation. If the property does not match the listing or you end up in a dispute with the owner, enforcing your rights is harder because the operator is already running outside the law and invoices often do not exist.
How to check before booking. From 20 May 2026 platforms must display the registration number on every listing. Until then it is worth checking yourself:
- Look in the listing or booking confirmation for a number starting with "ETV", "ETVPL", "DRIAT" or "NRUA".
- Verify that number and the address in the official Consell registry at caib.es/cathosfront/cens. The registry is public and free.
- Use the official app "Verificador Alquiler Turístico" by Fundació Balears d'Innovació i Tecnologia for iOS and Android. It shows geolocated legal offers nearby.
- Compare the address in your booking confirmation with the registry entry. Do street, house number and apartment match?
- Be cautious about listings with no number at all, phrases like "licence pending" or "in progress", a number that does not appear in the registry, or a number that belongs to a different address.
What to do if you spot an illegal rental. First, secure evidence: a screenshot of the listing, the booking confirmation and the payment record. Contact the platform and request a refund. In parallel you can give the Consell de Mallorca a tip, anonymously if you prefer. The competent office is reachable on 971 007 940 (Monday to Friday from 9 to 14) or by email at denunciesturistiques@conselldemallorca.es.
Guests are not fined, but they often pay the price
The fine falls on the owner, not on you. But lost holiday money, a cut-short trip or an apartment that does not match the listing are problems that stay with the guest. A two-minute check before booking protects you from much more expensive surprises.
Conclusion: staying legal is cheaper
The Balearic Islands built a control apparatus in 2025 and 2026 that can no longer be sidestepped by simple means. AI-powered scraping, EU-wide reporting obligations and high fines have made the grey market a serious risk. Anyone who continues to let without a licence is trading a modest five-figure income for a six- or seven-figure penalty exposure.
The legal route is more demanding but plannable. Whether you buy a property with an existing ETV, choose long-term letting or wait for the next CBAT call, each of these options can be calculated clearly. The days when "no one will notice" worked are over. Anyone who switches now, before an administrative procedure lands on their doorstep, also benefits from the 80-percent reduction.
Sources and references: Majorca Daily Bulletin on 4,305 fined listings in the Balearic Islands, Economia de Mallorca on 4,400 removed listings, Infobae on 40 percent illegal listings, Ultima Hora on the Talk&Code analysis, Euronews on the 65-million-euro fine against Airbnb, Spanish Property Insight on the removal of 66,000 listings, Spanish Property Insight on AI detection on Ibiza, Hosteltur on the 1.3-million-euro penalty, Mallorca Magazin on the 400,000-euro fine on Menorca, Inselradio on the Palma case exceeding 300,000 euros, Decreto-Ley 4/2025 of the Balearic Islands (full text and summary), Official ETV register of the Balearic Islands, "Verificador Alquiler Turístico" app (Google Play), Consell de Mallorca - reporting channel for illegal holiday rentals. Status: May 2026.