Before you sign anything for a beach-facing apartment in Torrevieja or a villa near the Mar Menor, run one crucial check: is the property inside a Ley de Costas setback zone, and if so, which one? The Spanish Coastal Law (Ley 22/1988, reformed by Ley 2/2013) protects the shoreline through the dominio público marítimo-terrestre (public maritime-terrestrial domain, or DPMT) and two "servidumbre" strips inland from it. Buying within these zones is not automatically a deal-breaker, but it changes what you can legally own, extend, renovate or rent out — and it can affect resale and financing.
In practical terms: a property built inside the DPMT itself sits on public land and can only be held on a temporary State concession, never true freehold. A property inside the servidumbre de protección (the protection setback, generally 100 metres, reduced to 20 metres in areas already urbanised before 1988) is privately owned but subject to strict limits on new building and extensions. This guide shows you exactly how to verify a Costa Blanca, Costa Cálida, Costa del Sol or Costa Almería property before you commit — using free official tools — so you know precisely what you are buying.
The Coastal Law establishes that beaches, dunes, cliffs and the maritime-terrestrial zone belong to the Spanish State and can never be privately owned. To enforce this, the coastline is divided into four bands measured inland from the shore.
| Zone | Width | What it means for a buyer |
|---|---|---|
| Dominio Público Marítimo-Terrestre (DPMT) | Variable — up to the reach of storm waves and highest tides | Public land. No private freehold. Existing buildings only via a temporary State concesión. |
| Servidumbre de tránsito (right of way) | 6 m (up to 20 m in difficult terrain) | Must stay clear for public and rescue passage. No permanent obstruction. |
| Servidumbre de protección (protection setback) | 100 m (reduced to 20 m in land urbanised before the 1988 law) | Private ownership allowed, but new residential building is prohibited; extensions and renovations tightly restricted and need regional authorisation. |
| Zona de influencia | 500 m | Planning-level constraints (density, no walls of building along the front). Mainly affects developers, less so individual buyers. |
The critical distinction most competitor articles blur: the 20-metre protection strip applies where the land was already consolidated urban land before the 1988 Coastal Law came into force. Most established seafront resorts on the Costa Blanca and Costa del Sol — think central Torrevieja, Benidorm, Fuengirola — fall into this reduced-setback category, which is why so much beachfront was legally built there. Land that was still rural in 1988 gets the full 100-metre protection strip, which is why newer coastal stretches feel much less developed.
The two coasts behave quite differently under the law:
Much of the northern Costa Blanca (Dénia, Jávea, Calpe, Altea) has rocky coves and cliffs where the DPMT hugs the shore tightly, while resort towns further south (Torrevieja, Guardamar, Santa Pola) have wide sandy beaches and dune systems that extend the public domain inland. Guardamar's protected pine-clad dunes are a textbook example of a wide DPMT. Coastal authority sits with the Servicio Provincial de Costas de Alicante under the national ministry (MITECO), with planning shared with the Generalitat Valenciana.
The Costa Cálida is dominated by the Mar Menor, Europe's largest saltwater lagoon and a heavily protected environment. Property around La Manga and the lagoon shores carries some of Spain's most sensitive coastal restrictions, reinforced by recent environmental legislation aimed at the Mar Menor's recovery. Buyers there must check not only the Ley de Costas deslinde but also regional environmental buffer zones — a villa that looks like a bargain on the water's edge may face severe limits on any works.
If you are weighing these two coasts against each other, our comparison of the four costas and our dedicated Costa Cálida and Almería buy-to-let guide put the coastal-law question in a wider lifestyle and yield context.
You can do most of this yourself, for free, before you even instruct a lawyer. Work through these steps in order.
| Situation | Own freehold? | Renovate? | Extend / rebuild? | Rent out? |
|---|---|---|---|---|
| Inside DPMT (concession) | No — concession only | Maintenance only, with authorisation | No new build; no increase in volume | Usually yes, subject to concession terms |
| Servidumbre de protección (20 m) | Yes | Yes, with regional permit | Very limited; generally no increase in footprint or volume | Yes, if licensed |
| Servidumbre de protección (100 m) | Yes | Yes, with authorisation | New residential building prohibited | Yes, if licensed |
| Beyond 100 m / zona de influencia | Yes | Normal municipal rules | Normal municipal rules | Yes, if licensed |
Two points buyers routinely underestimate. First, if you plan to renovate a coastal home, works inside the protection strip need authorisation from the regional coastal authority on top of the town-hall licence, which adds time and can be refused. Second, if you intend to let the property, confirm the rental status separately — coastal-law compliance does not replace the tourist rental licence rules.
The tax mechanics of the purchase itself are unchanged by coastal status — you still pay the standard transfer costs. What can differ is the valuation, because the tax base is the higher of your price or the cadastral valor de referencia, and a concession property may be priced well below a comparable freehold. Here are the 2026 acquisition rates for our four regions so you can budget accurately.
| Region (coast) | Resale — ITP | New build — IVA + stamp duty (AJD) |
|---|---|---|
| Costa Blanca (C. Valenciana) | 9% (from deeds signed 1 June 2026; 11% above €1M) | 10% IVA + 1.4% AJD |
| Costa Cálida (Murcia) | 7.75% | 10% IVA + 1.5% AJD |
| Costa del Sol (Andalucía) | 7% | 10% IVA + 1.2% AJD |
| Costa Almería (Andalucía) | 7% | 10% IVA + 1.2% AJD |
On the Costa Blanca note the timing rule carefully: the reduced 9% applies to deeds signed at the notary from 1 June 2026 — the notary signing date decides the rate, not the date you signed the arras (deposit) contract. Add notary (~0.2–0.5%), land registry (~0.1–0.25%), your lawyer (~1% + IVA) and a gestoría (~€300), and budget roughly 10–13% on top of the price for a resale and 12–15% for a new build — lower end in Andalucía, higher end in Valencia. For the full breakdown see our complete guide to taxes when buying property in Spain.
This is exactly why a specialist Spanish property lawyer is non-negotiable near the coast, and why coastal-law due diligence should sit alongside your wider beachfront property checks and the broader coastal flood and Ley de Costas risk assessment. All of these confirmations should be completed before you reach the notary on completion day.
Yes, provided it sits outside the public maritime-terrestrial domain (DPMT). Many established seafront homes on the Costa Blanca and Costa del Sol are legally freehold because their land was urbanised before the 1988 Coastal Law and only carries the reduced 20-metre protection strip. If the property is inside the DPMT itself, you can only hold a time-limited State concession, not freehold.
The servidumbre de tránsito is a 6-metre right-of-way strip that must stay clear for public and emergency passage along the shore. The servidumbre de protección is a wider setback (100 m, or 20 m in pre-1988 urban land) where private ownership is allowed but new residential building is prohibited and renovations need regional coastal authorisation.
Use the MITECO online deslinde map viewer to see the official boundary lines over the parcel, cross-check the Catastro geometry, read the Land Registry Nota Simple, and — for anything within roughly 150 metres of the sea — have your lawyer request a written certificate from the provincial Demarcación de Costas.
Not necessarily, but go in with open eyes. A concession is temporary, cannot be turned into freehold, may be harder to mortgage and can complicate resale. Check the remaining term, the conditions and whether it is transferable before you offer, and price it accordingly.
Yes. Around the Mar Menor on the Costa Cálida, Ley de Costas rules are layered with strict regional environmental protections aimed at the lagoon's recovery. Extensions and new works can be far more restricted than a similar plot elsewhere, so specialist local advice is essential.
It can. Obligations attached to unauthorised works inside protected coastal zones generally pass with the property. That is why verifying the legality of every terrace, pool and extension against both the town hall and Costas is a core part of coastal due diligence.
The Ley de Costas rewards buyers who do their homework and punishes those who don't. At Mediter Real Estate we sell coastal property across the Costa Blanca, Costa Cálida, Costa del Sol and Costa Almería, and we help international buyers confirm the deslinde, servidumbre and concession status of every seafront home before they commit. Explore the Costa Blanca or get in touch with our team today for honest, region-specific advice on buying safely near the sea.
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