The Coastal Law in Spain in 2026: Ley de Costas, the EU Reform of Concessions and What Costa del Sol Buyers Must Check

Spain’s coast belongs to everyone. The Ley 22/1988 de Costas, the Coastal Law, declares the shoreline, beaches and the zone reached by waves as inalienable state public domain. For a Costa del Sol buyer this means the seafront plot you are eyeing may not be ownable in the way a normal inland parcel is, and even land that is privately held near the shore carries strict building easements. Understanding the three statutory zones, the 2013 reform concessions and the deslinde certificate is the difference between buying a front-line villa with clean title and inheriting a demolition order. In 2026, a new layer has arrived: the European Commission’s infringement procedure against Spain’s automatic concession-renewal regime, and MITECO’s anteproyecto to reform the Reglamento General de Costas, which ends automatic extensions and requires competitive tendering.

What is the dominio publico maritimo-terrestre?

The dominio publico maritimo-terrestre (DPMT) is the stretch of coast that the Spanish state owns outright and cannot sell, prescribe or embargo. Article 132.2 of the Constitution declares the maritime-terrestrial zone, beaches, territorial waters and continental shelf resources as state public domain. The Ley 22/1988 de Costas, Article 3, defines the DPMT as the ribera del mar, which breaks down into two physical components: the zona maritimo-terrestre, the space between the low-water line (bajamar escorada or maximum living equinoctial spring tide) and the limit reached by waves in the largest known storms, and the playas, zones of loose material deposit including escarpments, berms and dunes up to the limit needed for beach stability.

The practical consequence is absolute. The DPMT is inalienable, imprescriptible and unembargoable under Article 7 of the Ley. No private title deed can override this. Article 9 declares null and void any administrative act that creates private ownership over public domain land, and Article 8 states that private claims recorded in the Property Registry have no obstructive value against the public domain. If a deslinde shows your plot falls inside the DPMT, your ownership is extinguished, whatever the Registro de la Propiedad says. This is not a theoretical risk on the Costa del Sol, where coastline retreat and new deslindes regularly redraw the boundary inland.

Cliffs in contact with the sea are included up to their crest under Article 4, as are landslides, islets in territorial waters and any accretion to the shore through natural deposit. MITECO confirms that Spain has over 10,000 kilometres of public domain coastline, and that 44 per cent of the population lives in coastal municipalities covering only 7 per cent of the territory.

What is the servidumbre de proteccion?

The servidumbre de proteccion is a 100-metre protection easement measured inland from the inner edge of the shoreline (the ribera del mar). Land within it can be privately owned, but the Ley de Costas restricts what you may do there. According to MITECO’s published FAQ, the protection easement prohibits new constructions of any kind, whether residential, hotel or commercial, and forbids increasing the volume, height or surface area of existing buildings. Permanent advertising is also banned.

There is one important reduction. In tracts already classified as urban or with an approved partial plan before 1 January 1988, the protection easement can be reduced to 20 metres by agreement between the State, the autonomous community and the relevant municipality, per Article 23.2 of the Ley. The 2013 reform (Disposicion Transitoria Primera.4) extended the 20-metre reduction to a second category: population centers that do not have the legal status of urban land but had urban characteristics at the time and cannot avail themselves of the third transitory provision. Together these provisions allow many established Costa del Sol front-line urbanisations to exist at all. The 100-metre band can also be extended by up to another 100 metres by the same tripartite agreement where coastal protection demands it.

Permitted uses inside the protection zone are narrow: installations that by their nature cannot be located elsewhere, such as marine aquaculture, salt pans, services supporting public use of the DPMT and uncovered sports facilities. After the 2013 reform, repair, improvement, consolidation and modernisation works on legally built pre-1988 structures are allowed, provided they do not increase volume, height or footprint, and they meet energy efficiency improvements of at least two letters or a B rating, plus water-saving requirements. Approval is through a declaracion responsable before the autonomous community administration, a simplification the Ley 2/2013 introduced to reduce the litigation that had plagued the 1988 regime.

What is the servidumbre de transito?

Inside the protection easement runs a narrower 6-metre transit easement, the servidumbre de transito. This strip, set along the inner edge of the shoreline, must remain permanently free for pedestrian passage and for surveillance and rescue vehicles. No structure, fence, planting or fixture may impede it. MITECO’s FAQ confirms that the transit zone is included within the 100-metre protection band, not a separate area beyond it.

The transit easement is the source of many day-to-day disputes on the Costa del Sol, where front-line properties sometimes enclose terraces or install gates that block the public path. A June 2025 enforcement case confirmed that fines for obstructing the transit servidumbre can reach EUR 5,000 under the Ley de Costas sanctioning regime. For a buyer, this means checking not only the building footprint but any terrace, wall or landscaping element that could encroach on the 6-metre passage.

What is the zone of influence?

Beyond the protection easement, Article 19 of the Ley de Costas establishes a zona de influencia of 500 metres from the inner edge of the shoreline. Land here is privately owned and buildable under the municipal plan, but the law requires that buildings avoid forming architectural screens or accumulating excessive volumes, and that building density aligns with the rest of the municipality. This is the zone where most Costa del Sol residential development sits, from Nueva Andalucia to Estepona’s New Golden Mile. It does not ban construction, but it shapes it. If you are buying a plot or a renovation project in this band, the municipal PGOU or PGOM plan applies these coastal influence criteria alongside its general zoning. Our guide to the Marbella PGOU and the new PGOM explains how the local plan interacts with state coastal law.

How did the 2013 reform change the Coastal Law?

The Ley 2/2013, de 29 de mayo, de proteccion y uso sostenible del litoral, reformed the Ley 22/1988 de Costas in two fundamental ways that matter to Costa del Sol buyers. First, it extended the maximum concession period for legally built pre-1988 structures that fall inside the public domain. Under the original 1988 law, such structures faced demolition after a 30-year transitional period that would have expired in 2018. The 2013 reform extended that to 75 years, meaning many concessions now run through to roughly 2063. The extension applies to titles held under the first and second transitory provisions of the Ley 22/1988, covering both properties declared private by final court judgment before the law’s entry into force and tracts where the public domain status was unclear.

Second, the reform allowed owners of structures within the protection easement to carry out repair, improvement and modernisation works without increasing volume, height or surface area, subject to the energy efficiency and water-saving conditions noted above. This was a major shift from the 1988 regime, which essentially froze such properties into managed decline. The reform also introduced the declaracion responsable procedure, removing the need for a full concession application for routine maintenance. For a buyer considering a front-line property built before 1988, the concession status is now the central due-diligence question: a 75-year concession is a durable, transferable, mortgageable right, but it is not ownership, and it ends.

The reform also added provisions on climate change adaptation, allowing the administration to declare tramos de costa en regresion (stretches of coastline in retreat) where new occupation titles are prohibited and existing concessions extinguish if the sea reaches the structures. This is increasingly relevant on the Costa del Sol, where coastal erosion affects several front-line stretches.

However, the 75-year automatic extension regime that the 2013 reform created has now drawn a direct challenge from the European Commission, which found that extending concessions without a competitive selection procedure breaches EU law. The 2026 Reglamento reform (see the next section) is the Spanish government’s response.

How does the 2026 EU infringement procedure change coastal concessions?

The most significant development in Spanish coastal law since the 2013 reform is the European Commission’s infringement procedure against Spain, which is now driving a reform of the Reglamento General de Costas. On 16 December 2024, the Commission sent a reasoned opinion to Spain (case INFR(2022)4121) for failing to comply with the Services Directive (Directive 2006/123/EC), specifically Article 12, which requires that concessions for economic activities over scarce resources be awarded through an impartial and transparent selection procedure. According to the Commission’s response to the European Parliament on 20 March 2025, Spanish legislation does not provide for this obligation when awarding concessions to build permanent premises on the coastal public domain, and it allows extensions of up to 75 years without competitive tendering, breaching both the Services Directive and the principle of freedom of establishment under Article 49 of the Treaty on the Functioning of the European Union.

MITECO responded by publishing an anteproyecto (draft royal decree) to reform the Reglamento General de Costas on 9 March 2026, opening a public information period that ran until 15 April 2026 (extended from the original 1 April deadline). The reform is reglamentario, meaning it develops existing legal texts rather than amending the Ley de Costas itself, and its stated objective is to guarantee that concessions for economic activities in the dominio publico maritimo-terrestre are awarded through impartial, transparent and competitively open procedures, avoiding automatic extensions.

For a Costa del Sol buyer, three things matter. First, the reform does not annul existing concessions. MITECO has confirmed that the new framework does not produce an automatic effect on currently installed establishments, nor does it immediately alter the conditions under which they operate. Once the reform enters into force, concessions can continue to be granted, but they must be processed under the new legal framework. Second, the reform reduces the maximum concession period that was previously set at 75 years as a general rule. Third, the reform introduces new dimensional requirements for beach establishments: under the proposed Article 68, establishments serving food and drink on natural beach tracts are limited to 70 square metres in a single floor with no basement, must be seasonal and demountable, and must maintain a minimum distance of 300 metres between installations. On urban beach tracts, the occupation limit rises to 200 square metres plus 70 square metres of exterior space, with a 150-metre minimum separation.

The reform also affects the extraordinary prorrogas (extensions) regulated in Article 2 of Ley 2/2013 for concessions linked to economic activities, which are explicitly within scope. The practical consequence is that the automatic renewal of coastal concessions, which the 2013 reform made possible, will no longer be available for economic-activity concessions once the Reglamento reform enters into force. New concessions and extensions will require a competitive public tender process.

The European Commission has indicated it will not escalate the infringement procedure if the Reglamento is modified before summer 2026 and the modification is not annulled by the Tribunal Supremo. The previous modification of the Reglamento (RD 668/2022) was annulled by the Supreme Court on 31 January 2024 for having dispensed with the required public consultation trámite, which is why MITECO has been careful to follow the full consultation procedure this time.

For residential property buyers, the reform primarily affects commercial concessions (beach bars, restaurants, leisure facilities) rather than the pre-1988 residential concessions under the transitory provisions. But it signals a broader shift: the era of automatic extensions is ending, and any future concession review or renewal will face competitive scrutiny.

What is a deslinde and why does it matter when buying?

The deslinde is the administrative procedure that identifies and delimits which specific plots belong to the public domain. It is the definitive answer to the question of whether your prospective purchase sits on state-owned land. MITECO, through the Direccion General de la Costa y el Mar, conducts the procedure, regulated under Article 12 of the Ley de Costas and the Reglamento de Costas (Real Decreto 876/2014).

The process involves a field survey (acto de apeo), technical studies and a provisional delimitation plan published in the provincial bulletin, the municipal notice board, the local press and the Ministry website. Interested parties, including neighbouring owners, have one month to submit allegations. The final resolution is issued by the Direccion General de la Costa y el Mar, with a maximum resolution period of 24 months under Article 12.1. Once approved, it is published in the BOE and inscribed in the Property Registry, where it carries the force to rectify any contradictory registration.

For a Costa del Sol buyer, the deslinde certificate is the single most important document in a coastal transaction. The Ley requires a certificado administrativo de no invasion del DPMT (certificate of non-invasion of the public domain) to inscribe or transmit a coastal property in the Registry. Without it, you cannot be certain that the plot, its pool, its terraces or its access path do not encroach on state land. A new deslinde can move the boundary inland after a storm season, and a structure that was legal one year can find itself inside the public domain the next. Our guide to illegal builds and land checks on the Costa del Sol covers the broader due-diligence framework, but the deslinde is the coastal-specific layer on top.

How do the coastal zones stack up: a distance table

Distance from inner shoreline edge	Statutory zone	Ownership	What you can do
0 m (the shoreline itself)	Dominio publico maritimo-terrestre (DPMT)	State, inalienable	No private construction. Public use. Pre-1988 legal structures held under concession (75-year max, now under EU reform pressure)
0 to 6 m	Servidumbre de transito (inside protection zone)	Private, with easement	Must stay open for pedestrian and emergency vehicle passage. No obstruction
6 to 100 m (or 20 m in pre-1988 urban tracts or population centers with urban characteristics)	Servidumbre de proteccion	Private, with easement	No new buildings. No volume, height or surface increase. Repair and modernisation of pre-1988 legal structures allowed under declaracion responsable with efficiency conditions
100 to 500 m	Zona de influencia	Private	Buildable under municipal plan, subject to density and design limits to avoid architectural screens
Beyond 500 m	Normal municipal zoning	Private	Standard planning rules apply. Ley de Costas does not bite

How does the Ley de Costas interact with local planning law?

The Ley de Costas is state law and it prevails over municipal and regional planning where they conflict. A municipal PGOU cannot grant buildable status to land inside the DPMT or authorise construction that the protection easement prohibits. This is why the Marbella PGOU saga, which legalised thousands of previously illegal homes, did not and could not legalise structures that fall inside the coastal public domain. The Marbella PGOU guide covers that local framework separately.

For renovation and new build projects near the shore, the coastal law sits on top of the normal permitting process. Our guides to building or renovating a villa on the Costa del Sol and refurbishment permits in Spain cover the standard licencia de obra process, but a coastal project must also clear the servidumbre restrictions, and if it is within the protection zone it needs the efficiency-gated declaracion responsable route introduced by the 2013 reform. If you are buying a plot of land near the coast, the deslinde check is as important as the urban classification check.

Coastal heritage designations add another layer. Properties listed as Bien de Interes Cultural (BIC) under the Ley del Patrimonio face additional restrictions on alteration and use that interact with the coastal easements. Our guide to heritage protection and Spanish property explains the BIC framework, which is particularly relevant for older front-line properties in historic coastal settlements.

What should a Costa del Sol buyer actually check?

Five practical steps will tell you whether a coastal property is safe to buy. First, request a deslinde certificate from the provincial Servicio Periferico de Costas. If a deslinde has been approved and published, it will show the exact boundary of the public domain relative to the plot. If no deslinde exists for the stretch, request at minimum a certificado de no invasion. Second, check the Property Registry for any anotacion marginal indicating a deslinde proceeding is under way (incoado), which signals that the boundary may move. Third, if the property is a pre-1988 structure inside the public domain, confirm the concession status, its remaining term and whether it is transferable, and note that the 2026 EU reform may affect future extensions of economic-activity concessions. Fourth, if the property sits within the 100-metre protection easement, confirm that any planned renovation falls within the 2013 reform’s permitted works and does not increase volume, height or footprint. Fifth, check that no terrace, wall, gate or landscaping element encroaches on the 6-metre transit easement.

These checks sit within the broader due-diligence process for any Costa del Sol purchase, covered in our guide to common mistakes when buying property in Spain. The coastal law adds a layer that inland purchases do not face, and it is the layer where a title deed is least reliable on its own.

What happens if your property is declared inside the public domain?

If a deslinde places your property inside the DPMT, the consequences depend on whether the structure was legally built. If it was, the Disposicion Transitoria Primera of the Ley 22/1988, as modified by the Ley 2/2013, grants the owner a right to occupy and use the property under a concession of up to 75 years. The concession is obligatory, not discretionary, if the requirements are met. It can be registered, mortgaged and transferred inter vivos and mortis causa. MITECO’s FAQ is explicit that a new deslinde does not mean affected buildings have an illegal origin; the recognition of rights is mandatory for legal structures.

If the structure was built illegally, that is, without the required permits or in breach of coastal law, it faces demolition. The Ley de Costas does not offer a path to legalisation for illegal coastal construction, unlike the AFO regime that applies to some inland illegal builds under the regional planning framework. The 2013 reform did soften the timeline for pre-1988 illegal structures in some circumstances, but the baseline position is that illegal coastal building is not protected. This is the starkest contrast with the inland illegal-builds landscape, and it is why the deslinde and the original construction licence history are non-negotiable checks for any front-line purchase.

Looking ahead, the EU infringement procedure and the Reglamento reform add a new dimension to concession due diligence. While existing residential concessions under the transitory provisions are not the primary target of the reform (which focuses on economic-activity concessions), the principle that automatic extensions are incompatible with EU law may eventually reach all concession types. A buyer relying on a concession that expires in the 2040s or 2050s should monitor the reform’s trajectory and seek legal advice on whether the concession’s renewal path could be affected.

This guide is general information, not legal or tax advice. Rules change and individual circumstances differ. Verify current requirements with an independent lawyer (abogado) or tax advisor (gestor/asesor fiscal) before acting.