There is a special legalization procedure for certain unauthorized buildings on rural properties. The application deadline is in February 2028. Starting in February 2027, the additional fee will increase to 15 percent. A residential building without a full building permit, a later addition, or an unapproved pool: In the case of older fincas in Mallorca, the existing buildings do not always match the approved construction plans. This can cause significant difficulties when selling, obtaining financing, or planning renovations.
Law 7/2024 allows, under certain conditions, for the retroactive legalization of such buildings, structures, and uses on suelo rústico. However, this special provision applies only if the legal requirements are met and the authorities can no longer demand that the property be restored to its lawful condition.
By when can an illegal finca be legalized?
In Mallorca, the three-year application window began on February 15, 2025. On that date, the Consell de Mallorca’s resolution on the application of the special procedure was published in the Balearic Official Gazette (BOIB). The deadline therefore generally ends in February 2028. For the application to be processed, it is crucial that it be submitted within the statutory period. The municipality’s final decision may be issued at a later date. February 2027 is particularly relevant for property owners. At the start of the third year of the application process, the legally required additional payment increases from 12.5 to 15 percent.
How much does legalization cost?
Law 7/2024 provides for an additional financial payment in addition to regular taxes and municipal fees. It is based on the material construction value of the buildings or facilities to be legalized.
The scale is as follows:
| Application Period | Additional Fee |
|---|---|
| February 15, 2025, through February 14, 2026 | 10% |
| February 15, 2026, through February 14, 2027 | 12.5% |
| Third application year starting February 15, 2027 | 15% |
The underlying material construction value is calculated in accordance with statutory requirements as of the date of application. It is not to be equated with the current market value of the property. For example, if the value set for the procedure is 200,000 euros, the additional benefit in the second year of the application is 25,000 euros. In the third year, it increases to 30,000 euros based on the same assessment basis. Added to this are, among other things, the costs of the technical project, municipal taxes and fees, as well as any necessary structural modifications.
For certain applicants subject to income tax, the law provides for reductions in the additional benefit of 25 or 50 percent. The legally defined income limits, based on the average taxable income of the past four years, are decisive. The total costs can therefore only be determined based on the specific building inventory and the applicant’s personal circumstances.
Which buildings can be retroactively legalized?
The special procedure applies to existing buildings, structures, and uses on rural properties that violate building codes, where the competent authority can no longer enforce the lawfulenforce compliance with the legal requirements. The decisive factors here are when the work was completed, what land classification applied at that time, and which legal deadlines are applicable. Law 7/2024 also takes into account more favorable provisions introduced at a later date. More stringent provisions that came into effect only retroactively may be disregarded when assessing the enforcement period that has already expired, provided the legal requirements are met. Special rules apply to protected rural properties. In such cases, it must be determined, among other things, whether the building had already been completed before the relevant construction use was expressly prohibited, and whether the applicable deadline has expired.
The age of a building alone is therefore not sufficient to determine whether it can be legalized.
Why the Cadastre and Land Registry Are Not Sufficient
A building may be registered in the Spanish Cadastre and described in the Land Registry without having been fully approved under building regulations. Both registers serve different purposes. They do not replace a building permit or the municipality’s decision regarding retroactive legalization. For an assessment, the existing buildings and uses must therefore be compared with the original permits, construction files, and historical records.
When is legalization not possible?
The special regulation contains several statutory grounds for exclusion.
- For example, certain buildings and structures on public land, within relevant roadand coastal protection zones, or on land that, under applicable regulations, is subject to expropriation or mandatory demolition.
- Designated floodplains and hazard zones may also preclude the procedure.
- Additional restrictions apply to certain uses that require special public rights or limited permit quotas.
However, a protected land category does not automatically lead to exclusion in every case. This depends on the specific legal requirements and the historical development of the protected status. The location and classification of the property are therefore among the first points to be considered in a preliminary technical review.
What documents does the municipality require?
The application for extraordinary legalization is submitted to the relevant Ayuntamiento. A technical legalization project is required that documents the existing structure and takes into account the requirements stipulated by law. In particular, the actual building dimensions, previous use, and date of construction must be clarified. Historical aerial photographs, older construction plans, official records, and other suitable documents may be used as evidence. The procedure must, in principle, cover all affected buildings that violate building codes and all uses of the same property unit. If individual components cannot be legalized, their removal may be required. A key technical issue is wastewater disposal. The law requires a system that complies with the requirements of the Balearic Water Management Plan. The municipality may also require certain measures related to energy and water efficiency, the reduction of light pollution, or exterior design. For a finca with an old septic tank, inadequate wastewater treatment, or an untreated water supply, this may result in additional investment costs.
What are the implications of legalization for vacation rentals?
In principle, an apartment legalized under this special procedure may not be used for commercial short-term tourist rentals. The corresponding restriction is specified in the legalization decision and must be entered in the land registry. A legal exception applies to certain apartments that were already legally rented out to tourists prior to May 29, 2024, and continue to hold the required authorization. Additional requirements apply to certain earlier forms of authorization. Owners and buyers must therefore separately verify the property’s prior use for tourism. Legalization under building code does not replace a tourist rental permit.
What is the significance of legalization when selling real estate?
Successful legalization can eliminate existing uncertainties under building code regulations and thereby improve the conditions for sale, financing, or future construction projects. However, it does not mean that every desired expansion would subsequently be permitted. Future work remains subject to the applicable building codes. When purchasing real estate, an announced legalization—or one that is merely considered possible—should not be treated as if a permit had already been granted. Before signing a contract, it must be clarified which structural elements are approved, which could be legalized through the special procedure, and what costs or restrictions would be associated with this.
Owners who wish to use this procedure should first have the initial building code situation and the required scope of the project assessed. Especially in light of the increase in the additional fee scheduled for February 2027, this preliminary review can also be financially crucial.
Official sources: Law 7/2024, seventh supplementary provision, and Consell de Mallorca, BOIB of February 15, 2025. The deadlines, fees, and special requirements are based on the currently consolidated legal provisions.
