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Guide
How legal due diligence on a property works in Spain
The detailed legal due diligence happens after the reservation, not before it, and the reservation contract contains terms protecting the buyer if the checks uncover a serious problem. The Registro de la Propiedad shows the actual owner as well as mortgages, enforcement orders, easements and other restrictions. Depending on the type of property, the checks also cover whether the documentation agrees, debts to the owners’ community, IBI and the necessary permits. At the signing there is then a second, independent check: before signing, the notary verifies ownership and the current state of the register again.
You sign a reservation, only then find a legal problem, and lose your reservation deposit.
How it really is
The detailed legal due diligence happens after the reservation, not before it, and the reservation contract contains terms protecting the buyer if the checks uncover a serious problem. The Registro de la Propiedad shows the actual owner as well as mortgages, enforcement orders, easements and other restrictions. Depending on the type of property, the checks also cover whether the documentation agrees, debts to the owners’ community, IBI and the necessary permits. At the signing there is then a second, independent check: before signing, the notary verifies ownership and the current state of the register again.
What changes it
The notary and your lawyer do not do the same job. The notary is an independent public official and checks legality and the state of the register at the moment of signing. Your lawyer represents you and does the due diligence before you commit. Problems here also do not come from fraud but from unfinished paperwork: an unregistered extension, a missing licencia de primera ocupación, a community debt that travels with the property.
What we do about it
Without completed legal due diligence we will not recommend going on to the purchase contract. The law firm represents you, not us, pays us nothing, and you can bring your own lawyer.
In 30 seconds
The detailed legal check happens after you reserve, not before, and the reservation contract's own wording is what protects your deposit while it runs. A lawyer checks about 15 things over 2 až 4 weeks; a notary checks ownership and the registry again at signing, independently.
If the deep legal check happens after I reserve, is my deposit at risk?
A Spanish property reservation is a real commitment, usually 6 000 až 11 000 €, paid before the detailed legal check has run. That order surprises many first-time buyers, and it is worth explaining rather than glossing over. The reservation is what takes the property off the market while the check happens. The check itself is what confirms whether you should actually proceed to the full purchase contract.The reservation is deliberately not a blind commitment. Its own written conditions state what happens if your lawyer's check turns up a serious problem. Under those conditions, the deposit is returned. The protection is contractual, written into the reservation agreement itself, not a general legal guarantee that exists independently of what that document says. This is exactly why a lawyer, representing you and nobody else, has to read and approve the reservation contract's wording before you sign it and before any money moves.
What actually protects my deposit while the legal check is running?The specific wording of the reservation contract you sign, not a general rule of Spanish law that applies regardless of what it says. A lawyer reads that contract before you sign it. That is what makes sure the conditions for getting your deposit back, if a serious problem is found, are actually written down, not assumed.
What is the actual difference between the notary and my own lawyer?
These two roles are easy to conflate and they are not the same job. A Spanish notary is an independent public official who authenticates the deed at signing: checking identity, and confirming the registry entry at that specific moment. Every professional in the chain, lawyers and agents included, also runs standard anti-money-laundering identity checks under Spanish law. The notary does not negotiate on your behalf, and does not run the deeper investigation into the property's history before that point.Your own lawyer does that earlier, independent, deeper check: who legally owns the property, what charges or debts sit against it, whether the building itself is legally sound, and whether the community of owners has any outstanding claims. This work happens in the weeks after the reservation, specifically so problems surface while it is still realistically possible to walk away. That is different from the signing table, where far more money and momentum are already behind the deal.
The notaryYour own lawyer
An independent public official, not working for you specifically
Confirms identity and the registry entry again at the moment of signing, as a final, independent check, not a substitute for earlier due diligence.
Your own representative, chosen by you, paid by you
Runs the deeper check in the weeks after reservation, precisely so a serious problem is found while withdrawal is still realistic, not after signing.
If the notary already checks ownership at signing, why do I need my own lawyer's check earlier too?The notary's check happens at the very end of the process, often after a reservation deposit has already changed hands and the purchase contract is already signed. By that point, walking away is far more costly. Your lawyer's earlier check exists to catch a problem while it is still realistically possible to withdraw. That is a different job at a different moment, not a duplicate of what the notary does.
Who does the lawyer actually work for, and what does it cost?
A lawyer engaged for this check represents you, and only you. It is not the seller's lawyer, and it is not paid by us: the fee is roughly ~1 % of the purchase price, including VAT, paid directly to the law firm. We take no referral commission from that firm at all. You are also free to bring an independent lawyer of your own choosing instead of the one we introduce.Without a completed check, we do not recommend moving ahead to the purchase contract. This is not a formality. It is the point in the process where a genuine problem, if one exists, is meant to surface. Skipping it to save time defeats the entire purpose of paying for it in the first place.
Straight talk
Does this process guarantee nothing will ever go wrong?
No, and no honest description of it would say otherwise. What the process does is put a real, independent check between your money and the seller's, at the one moment it is still cheap to walk away. A second, independent check follows at the notary, before the final transfer. Most problems this catches are not fraud; they are unfinished paperwork: an unregistered extension, a missing occupation licence, or a debt owed to the community of owners that would otherwise pass to you.This is general information about how the Spanish purchase process works, not legal advice on any specific property. It does not perform the checks it describes; an independent lawyer does that, on your behalf, for a fee you pay directly to them. We take no referral fee from that lawyer. The checks themselves cost the buyer nothing beyond the lawyer's own fee.
Frequently asked questions about legal due diligence
What actually happens if my lawyer finds a serious problem after I have already reserved?
This is exactly the situation the reservation contract's conditions are written to cover. If the problem meets those written conditions, the purchase does not proceed to the full contract and the deposit is returned. This is why a lawyer needs to read and approve the reservation contract's exact wording before you sign it, not after.
Do I have to use the lawyer Arevont introduces me to?
No. You are free to bring your own independent lawyer instead. We take no referral fee from the firms we do introduce, and either way, the lawyer represents you, not us and not the seller.
Is anything about this process new or different in 2025 or 2026 compared to previous years?
Not materially. The core process, an independent lawyer's pre-purchase check followed by the notary's own independent confirmation at signing, is the same established structure it has been for years. Standard identity and anti-money-laundering checks by every professional involved are ordinary, standing practice, not a recent change. Nothing here should be read as a warning about a new risk; if anything, the stability of the process is the honest, reassuring finding.
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