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Legal and technical checks

Due diligence on a Marbella villa: title, licences and survey

A villa can look immaculate and still carry an unpaid debt, an unlicensed extension or a planning problem that limits what you can do with it. Due diligence is the work that finds these things before you pay, and in Marbella it deserves more time than in most places.

Buying4 min readUpdated 19 October 2026

Mediterranean villa with arches and tiled roofs lit at dusk

Title and charges at the land registry

Your lawyer starts with a nota simple from the land registry (Registro de la Propiedad). It shows who owns the villa, how the property is described and what is registered against it: mortgages, embargoes, rights of way and other burdens. The seller must be the registered owner, or the chain of title to them must be clear.

A mortgage on the register is normal and is usually cancelled at completion from part of the price. What matters is that every charge is identified and that the contract states who clears it and when. A fresh nota simple is requested again just before signing, and our guide to the purchase process shows where these checks sit in the timeline.

Cadastre, registry and reality

The cadastre (Catastro) is the tax register, separate from the land registry, and the two do not always agree. Your lawyer compares the plot size, built area and boundaries in each with the villa on the ground. Differences are common in older villas that have grown over the years, and they often point to work that was never licensed.

Small discrepancies can be corrected, sometimes before completion. Larger ones affect value, financing and any future sale, so they belong in the negotiation rather than in a footnote.

Architectural model of a house on building plans

Debts that follow the villa

Some debts attach to the property rather than to the person, so they can pass to you if the seller leaves them unpaid. Your lawyer asks for recent IBI receipts and, in a gated estate or any development with a community of owners, a certificate from the administrator confirming that the community fees are up to date.

Utility bills, the municipal rubbish charge and any works already approved by the community are checked too. Where something is outstanding, the contract can allow part of the price to be held back at completion to settle it.

Licences: building, occupation and AFO

Every villa should rest on a building licence (licencia de obras) that matches what stands on the plot. Traditionally a first occupation licence then confirmed that the house could be lived in. Under Andalusia's planning law LISTA (Ley 7/2021), many of these have been replaced by a sworn declaration (declaración responsable), so your lawyer looks for one or the other.

Where a villa, or part of it, was built irregularly but the deadline for enforcement has passed, it can obtain AFO status (asimilado a fuera de ordenación). This recognises the situation without legalising it, and it limits what you can do: work is typically restricted to maintenance and repair, and an extension is not normally possible. An AFO villa can still be a sensible purchase at the right price, provided you know exactly what the status allows and how your lender views it.

A wooden garden gate opening from white beachfront houses onto the sand in Marbella

Marbella's planning position

Planning in Marbella has an unusual history. The 2010 general plan was annulled by the courts, with the Supreme Court ruling in 2015, and the town returned to its 1986 general plan. A new plan has been in preparation since.

For a buyer, this means checking the villa against the rules that apply today, not against what a seller or an older brochure assumed. Any licence, extension or building plot that relied on the 2010 plan deserves a closer look, and your lawyer can request planning information on the specific plot from the town hall.

Coast, countryside and unlicensed additions

Beachfront villas fall under the Coastal Law (Ley de Costas), which restricts building near the shore. Your lawyer checks where the official coastal boundary runs and whether any part of the plot lies within the protected zones, because that decides what you can rebuild or add. This matters on the Golden Mile and along every other stretch of beach.

Land classification matters just as much. On urban land (suelo urbano) a villa sits within the planned fabric of the town; on rustic land (suelo rústico) building is tightly restricted, and you cannot assume that a guest house, a second pool or an extension can be added later.

Look closely at pools, pool houses, enclosed porches and extra rooms. Each is compared with the licences and the cadastre, and the outcome can be legalisation, AFO status, a lower price or a reason to walk away.

The technical survey

Legal checks tell you what the villa is allowed to be; a survey tells you what it is. Instruct an independent architect or building surveyor to inspect the structure, damp in basements and walls, roofs and flat terraces, the pool and its plant room, and the electrical, plumbing and air-conditioning installations.

On hillside plots, retaining walls and drainage deserve special attention, since repairs are costly and can involve neighbours. If the survey points to work, our guide to renovating a villa helps you budget it before you agree the price, and new builds bring their own checks, covered in new build or resale.

This article is general information, not legal or tax advice. Before you commit to a purchase, instruct an independent lawyer (abogado) and a tax adviser, and make the contract conditional on their findings where you can.

Key points

  • A fresh nota simple shows the owner and every charge registered against the villa.
  • Registry, cadastre and the villa on the ground should match; gaps often mean unlicensed work.
  • IBI and community debts can follow the property, so ask for receipts and a certificate.
  • AFO status recognises an irregular build but limits what you can do with it.
  • Commission an independent survey, with extra care for retaining walls on hillside plots.

Questions

What is a nota simple?

It is an extract from the land registry showing the registered owner, the description of the property and any mortgages, embargoes or other charges. Your lawyer requests one early and again just before completion.

Can I buy a villa with AFO status?

Yes, and some are sensible purchases. AFO recognises an irregular build that is past the enforcement deadline, but it limits future works, so the price and your plans should reflect that. If you need a mortgage, ask your bank early how it treats AFO villas.

Why does the 1986 plan still matter in Marbella?

The courts annulled the 2010 plan, with the Supreme Court ruling in 2015, and the town returned to the 1986 plan while a new one is prepared. Licences and plots that depended on the 2010 plan therefore deserve a closer look.

Is a survey really necessary on a modern villa?

Yes. Even recent villas can have waterproofing, drainage or pool problems. A survey costs little next to the price, and it gives you facts for the negotiation instead of impressions from a viewing.

Official sources

  • Registro de la Propiedad (Spanish land registry)
  • Dirección General del Catastro (Spanish cadastre)
  • Ley 7/2021 (LISTA), Junta de Andalucía
  • Ley de Costas (Spanish Coastal Law)

Published 19 October 2026 by the editors of Luxuryvilla Marbella. Figures are indicative and were checked for autumn 2026.

Mediterranean villa with arches and tiled roofs lit at dusk
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