Spain's Coastal Law and buying a home by the sea

An apartment with a sea view may stand next to land governed by special coastal rules. Measuring the distance to the water or locating the property on a map is not enough. The buyer must identify the building and plot, request the relevant records and ask a specialist to establish whether the purchase is affected by the public coastal domain, easements or restrictions on works.

Why “front line” is not a legal answer

This advertising phrase describes an impression and a location, not a legal regime. Ley 22/1988 de Costas governs the maritime-terrestrial public domain and the associated zones. The Reglamento General de Costas, approved by Real Decreto 876/2014, develops its procedures and rules. Whether they apply to a particular property must be established from official material and records, not from the listing.

The shoreline changes, and a boundary shown on a plan may not match what a buyer visually regards as the start of the beach. Do not draw the line yourself on a satellite image. Ask a lawyer to identify the competent authority, the current administrative case file (expediente) and the meaning of each marking for the plot and the existing building.

Three separate questions that must not be confused

The first question is whether any part of the land lies within the public maritime-terrestrial domain (dominio público marítimo-terrestre). The second is whether the relevant easement zone applies to private land. The third is which works and forms of use are permitted for the specific existing property. An answer to one question does not replace answers to the other two.

Even if an apartment is registered, that does not automatically confirm that a terrace may be enclosed, a room extended or a pool built. Conversely, proximity to the coast does not by itself prove that a sale is prohibited. The building's records, dates and circumstances must be checked.

What to request before paying a deposit

• an up-to-date informational Land Registry extract (nota simple) and cadastral information;
• a plot plan and precise identification of the premises being acquired;
• the building's construction and occupancy records;
• information about any official boundary-demarcation proceeding (deslinde) or other procedure concerning the property, if one exists;
• permits for external works already carried out and for enclosed terraces;
• community of owners' minutes concerning the façade, shared terraces, beach access and planned works;
• a written opinion from an independent lawyer addressing the exact address.

The records must relate to the property stated in the contract. A matching development name is not enough. Cross-check the registered property unit (finca registral), cadastral reference, apartment number, parking space and storage room.

How to read a map without false confidence

Record the official source, date, legend and scale. If graphic material is available, save the link and ask a specialist to compare it with the cadastral and Land Registry descriptions. A coloured layer without an explanation neither proves ownership nor determines the outcome of a particular administrative proceeding.

Do not rely on an old screenshot supplied by the seller. Check the material again immediately before assuming an obligation. If sources differ, do not simply choose the convenient one; describe the discrepancy and resolve it in a written opinion from a competent professional.

The existing building and future renovation

A buyer acquires not only the present condition but also constraints on future use. Ask which external elements are common property, who maintains protective structures and whether special permits are required. Internal renovation and intervention in the façade, roof or plot require different checks.

Do not include an awning, enclosure, extension or new pool in the financial plan as if it were guaranteed to be permissible. First obtain a technical solution, approval from the community of owners and an answer on the required permissions. Similar work at a neighbour's property is not permission for your apartment.

Access to the sea and common areas

A direct path to the beach may run through common property, a public route or land subject to a special regime. Establish who is responsible for the gate, path, lighting and repairs. Do not assume an exclusive right merely because the seller hands over a key.

Inspect the slope, retaining walls, drainage and the condition of external elements, but entrust the technical conclusion and cost estimate to an engineer. Costs should be assessed from an inspection of the specific building and documented plans of the owners’ association (comunidad de propietarios), not from proximity to the sea or a universal percentage.

How to reflect the checks in the contract

Before payment, the lawyer should determine which documents are essential to the buyer's decision and what happens if they are not supplied or the conclusion is unsatisfactory. Do not copy a clause from another transaction: the location, property and identified issue must be described precisely.

If the seller relies on the age of the building, an oral explanation does not replace analysis of the applicable regime. If an authority is still considering an issue, the buyer must understand the subject of the proceeding, its current stage and its possible effect on use and value.

Working review sheet

Keep not only the final opinion but also a copy of the map or certificate, showing the date obtained, source and legend. A screenshot without a scale, administrative case-file number and connection to the specific registered property is difficult to use in a later comparison. If a boundary runs close to the building, ask the specialist to explain in writing which document was used and whether the conclusion concerns the apartment, plot, common areas, access or proposed works.

1. Identification: finca, Catastro, address and ancillary premises.
2. Coastal regime: official material, date, legend and administrative case file.
3. Building: permits, physical configuration and external works.
4. Community of owners: common areas, access, minutes and estimates.
5. Future plans: renovation and alterations important to the buyer.
6. Opinions: separate conclusions from the lawyer and technical specialist.
7. Contract: consequences of unresolved issues before payment.

The purpose of the review is not to label the property “safe” or “problematic”, but to understand the specific rights, restrictions and costs. This material was checked on 25 October 2026 against consolidated official texts; BOE warns that a consolidated version is informational and that the official publication must be used for legal purposes.

Official sources

• Official source: BOE: Ley 22/1988, de Costas.
• Official source: BOE: Reglamento General de Costas, Real Decreto 876/2014.