Buying property in Spain can go badly wrong. Not because Spain is a uniquely dangerous place to invest — it isn't — but because buyers routinely skip or skim the legal checks that exist precisely to protect them. They fall in love with a whitewashed villa, appoint a lawyer recommended by the estate agent selling the villa, and sign documents they haven't properly understood.
This guide exists to fix that. Spain property due diligence is not a formality. It is the process by which you establish whether what you're buying is actually what you think you're buying. Done properly, it protects you from inheriting someone else's debts, someone else's planning violations, and a property that turns out to be partially or entirely illegal to occupy.
Read this before you sign anything. If you're still at the property search stage, browse available listings on Voya to get started.
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*This article is for general information only and does not constitute legal advice. Always appoint an independent, qualified Spanish abogado before proceeding with any property purchase.*
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1. Why Due Diligence in Spain Is Non-Negotiable
Spain operates a property registration system that is robust in theory but riddled with gaps in practice. The Land Registry (Registro de la Propiedad) records ownership and charges against a property. The Cadastre (Catastro) records physical descriptions and size for tax purposes. Neither is automatically updated — and crucially, neither necessarily reflects what has actually been built on a plot.
Extensions can be added without planning permission. Debts can accumulate on a property's record. Community of owners can be owed years of unpaid fees. Infrastructure — roads, drainage, streetlights — can be legally unfinished, meaning the buyer ultimately picks up those costs.
The result: a property that looks perfect on a visit can conceal serious legal and financial liabilities. Buying property in Spain without thorough legal checks is not a calculated risk — it's a blindfolded one.
Your independent solicitor's job — and this must be an independent solicitor, not one recommended by the seller or the selling agent — is to surface every one of these issues before you commit.
2. Title Search: What the Land Registry Reveals
The first and most fundamental check is the title search at the Land Registry. Your lawyer requests a copy of the property's current entry (the nota registral) and traces the chain of ownership back to confirm the seller genuinely owns the property and that the title is clean.
This sounds obvious. It is surprising how often it reveals problems.
Common title issues include:
- Ownership discrepancies — the person selling the property is not registered as the sole owner, or a co-owner (a divorced spouse, a sibling, an heir) has not consented to the sale
- Mortgages not cancelled — a previous mortgage was paid off but the cancellation was never formally registered, leaving the charge visible against the property
- Usufruct rights — a third party has a registered right to use and enjoy the property, which can survive a change of ownership
- Easements — rights of way, drainage easements, or other third-party rights over the land that are not obvious from a site visit
3. Outstanding Debts and Embargos That Transfer with the Property
This is the check that catches buyers most off-guard. In Spain, certain debts are attached to the property itself — not to the person who owes them. When you buy, those debts come with you.
Embargos — judicial or administrative charges placed on the property by creditors — are registered at the Land Registry and must be cancelled before or at completion, or deducted from the purchase price. Your lawyer will identify these from the nota simple (see section 8) and the full Land Registry extract.
Types of charges that can transfer with the property include:
- Bank mortgages — must be formally cancelled at the notary, with a portion of the purchase price used to discharge the debt directly
- Tax debts (embargos fiscales) — the Agencia Tributaria and regional authorities can place charges on property for unpaid taxes; these are enforceable against a new owner
- Court judgments — if the previous owner lost a civil court case involving a money judgment, the claimant may have secured an embargo against the property
- IBI arrears — unpaid annual property tax can become a charge on the property
4. Checking Planning Permission and Legal Build Status
This is where rural properties and properties with extensions or outbuildings create the most risk. Spain's planning system is administered at the municipal (town hall) level — Ayuntamiento — and compliance varies enormously between regions and even between neighbouring municipalities.
Your lawyer must check:
- Original building licence (licencia de obras) — was the property built with a valid building permit?
- Extensions and outbuildings — do they have their own licences, or were they added illegally?
- Land classification — is the plot classified as suelo urbano (urban), suelo urbanizable (developable), or suelo no urbanizable (rural/protected land)? Building on protected land without permission creates properties that authorities can order demolished — and have done so
Important: the statute of limitations for planning infringements varies by region. In Andalucía, for example, structures on rural land more than six years old may be in a legal grey zone where demolition orders have lapsed — but this carries its own complications. Your lawyer needs to assess this region by region. For more on what to expect when buying in Andalucía, see our Almería property guide.
5. The Licencia de Primera Ocupación: Why It Matters More Than You Think
The Licencia de Primera Ocupación (LPO) — also called the Cédula de Habitabilidad in some regions — is the licence issued by the town hall confirming that a property is legally fit for human habitation. It certifies that the property was built in accordance with the approved plans and meets minimum habitability standards.
Without this licence:
- You cannot legally connect utilities (electricity, mains water, mains gas) in your name as a primary supply
- You cannot legally register as resident at the address
- Selling the property in the future becomes significantly more complicated
- Mortgage lending is typically refused by Spanish banks
- The property may not legally exist as a residential dwelling in the eyes of the municipality
Your lawyer should request the LPO certificate directly from the town hall and confirm it is current. If it doesn't exist, you need to understand exactly why, what the cost and timeline of obtaining one would be, and whether it is even possible given the property's planning status.
6. Community Fee Arrears — Yes, You Can Inherit Them
If the property is part of a Comunidad de Propietarios — a community of owners, which applies to apartments, townhouse complexes, and many villa urbanisations — the previous owner's unpaid fees become your problem.
Under Spanish law, a buyer is liable for community fee debt from the current year and the preceding three years. On a complex with high monthly fees or where the previous owner was seriously in arrears, this can amount to thousands of euros.
Your lawyer must request a certificate from the community administrator (administrador de fincas) confirming that all fees are paid up to the date of sale. This certificate must be provided by the seller — typically as a condition of completion — and presented to the notary at signing.
Do not accept verbal assurances. Do not accept a certificate from the seller directly without independent verification. The community administrator is the correct source.
Additionally, ask whether there are any approved but unpaid special levies (derramas). If the community has voted to carry out major repairs — a new roof, lift replacement, pool resurfacing — and the levy hasn't been collected yet, you may be buying into a bill that comes due the month after you complete.
7. Urbanisation and Infrastructure Checks
This check is particularly relevant for properties on residential urbanisations — the estate-style developments that spread across coastal Spain from the 1970s onwards — and for rural plots.
The critical question: has the urbanisation been formally accepted by the municipality?
In Spain, developers are legally required to build and hand over public infrastructure — roads, pavements, streetlights, drainage, water mains — to the relevant municipality before a development is formally accepted. Thousands of urbanisations across Spain have never completed this process. The residents live there; the infrastructure exists; but legally, the municipality has not accepted responsibility for it.
The consequence: when roads need resurfacing, when drainage needs upgrading, when streetlights fail — the cost may fall to the residents collectively rather than the municipality. Your community fees may be carrying this burden already. Or the bill may arrive in the future.
Your lawyer should check the urbanisation's legal status at the town hall. If acceptance is incomplete, understand what outstanding obligations remain and who is responsible for meeting them.
For rural properties, check access rights carefully. A property accessed by an unpaved track that crosses private land may have no formal right of way recorded. This can mean disputes with landowners and, in a worst case, inability to access your own property without trespassing.
8. The Nota Simple: Your Most Important Document
The nota simple is a summary extract from the Land Registry. It costs approximately €9 to obtain online and contains:
- The registered owner(s)
- A description of the property (size, boundaries, reference number)
- All registered charges, mortgages, and embargos
- Any registered easements or conditions on the title
What the nota simple does not show: planning violations, community fee arrears, LPO status, IBI debt (unless embargoed), or the physical reality of the property. It is the essential starting point, not the complete picture. Treating it as sufficient due diligence is a common and expensive mistake.
9. How Long Due Diligence Takes
Realistically: three to six weeks for a straightforward urban property with no complications. Longer for rural properties, properties with complex ownership histories, or anything requiring town hall certificates (which Spanish municipalities issue at their own pace).
This is why the contrato de arras — the binding preliminary contract where you pay 10% of the purchase price — should never be signed before due diligence is complete. Sellers and agents will sometimes push for quick signing, citing other interested buyers. A seller genuinely confident in their title will wait for your lawyer to complete checks. One who won't wait should make you think.
Build sufficient time into your timeline. Due diligence cannot be meaningfully rushed.
10. Spain Property Due Diligence: Red Flags That Should Make You Walk Away
Some issues are negotiable — outstanding debts that the seller agrees to clear, minor discrepancies that can be regularised. Others should prompt serious reconsideration or outright withdrawal:
- No Licencia de Primera Ocupación and no plausible route to obtaining one — you are buying an illegally occupied property
- An embargo you cannot confirm will be cleared before completion — you could end up owning a property with a creditor's charge still attached
- Planning violations on protected rural land — demolition risk is real and has been enforced across Spain
- Seller refusing to provide community fee certificate — almost always means arrears exist
- Title registered to someone other than the seller, with no clear explanation
- Significant discrepancy between the Cadastre size and the Land Registry size — suggests unregistered additions or a historical error that needs formal resolution
- Urbanisation with no municipal acceptance and significant deferred infrastructure costs — you may be buying into a long-running bill
11. FAQ: Spain Property Due Diligence
Do I need a lawyer for Spain property due diligence, or can I do it myself?
You need a lawyer. Several of the checks — Land Registry searches, town hall certificates, community administrator certificates — require professional access or formal requests that a private buyer cannot easily replicate. More importantly, the legal interpretation of what the documents reveal requires qualified expertise.
Can the estate agent's recommended lawyer handle due diligence?
Technically yes, but this is strongly inadvisable. A lawyer with a commercial relationship with the agent selling the property has a conflict of interest. Appoint your own independently sourced solicitor.
What happens if due diligence reveals problems after I've signed the arras?
This is why due diligence must happen before the arras, not after. If you sign the arras and then discover a problem, you face losing your 10% deposit if you withdraw. Your contract should include specific subject to due diligence clauses — but the cleaner approach is not to sign until checks are substantially complete.
Is due diligence different for new build properties?
Yes and no. The developer's planning permission, building licence, and LPO process all need checking. You are also buying a property that doesn't yet exist in its final form, which requires checking the developer's track record, their bank guarantee (aval bancario) for your stage payments, and the completion and handover process. Our guide to buying off-plan in Spain covers these risks in detail.
How much does due diligence cost?
It is included in your solicitor's fee, typically 1–1.5% of the purchase price. Some searches carry their own direct costs (nota simple, Cadastre certificate), but these are minor — €50–€200 in total. The cost of skipping it can be six figures. For the full picture of what you'll spend buying in Spain, read our complete buying costs breakdown.
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*This article is for general information only and does not constitute legal advice. Property law in Spain varies by autonomous community and municipality. Always appoint a qualified, independent Spanish abogado before proceeding with any property purchase. Voya is not a legal services provider.*
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