14 red flags every foreign buyer should spot before signing for a Spanish property

Most of the horror stories foreign buyers tell about Spanish property — the unregistered extensions, the inherited debts, the "tourist licence" that turns out to belong to the previous owner — were visible before the deposit was paid. The buyer just didn't know what they were looking at.

This is the field guide. Fourteen red flags that come up again and again in the work foreign buyers bring to lawyers, agents and to us at Buvivo. Spotting one doesn't mean you walk away. It means you slow down, ask the question, and require a written answer before any money moves.

1. The price is 20–30% below comparable listings

The single most reliable warning sign in Spanish residential property is a price that doesn't make sense. There are legitimate reasons a flat trades below market — a forced sale, an heir who lives abroad, a building scheduled for major works — but each of those reasons exists somewhere on paper, and a serious seller will tell you up front.

When the price is unexplained, the discount is usually paying for a problem you haven't found yet: an embargo on the deed, a structural defect, a chunk of the building that was never legalised, or a current tenant who isn't leaving. Cheap is not a strategy in Spain. Cheap is a question.

2. There is no recent nota simple

The nota simple is the one-page extract from the Land Registry (Registro de la Propiedad) that tells you who owns the property, what its registered surface area is, and — crucially — what charges exist against it: mortgages, embargos, easements, court judgments, unpaid taxes attached to the deed.

A serious seller will hand one over without being asked, dated within the last 30 days. If the agent or owner can't produce one, or produces a document from 2019, assume there is something on it they don't want you to see. Your lawyer will pull a fresh one for €9–15. Read it before you sign anything, including the arras contract.

3. The registered surface area doesn't match the listing

Every Spanish property has two surface areas you will see quoted: the superficie construida (registered built area) on the nota simple, and whatever the agent has written on the listing. If the listing says 110 m² and the registry says 78 m², a 32 m² extension was almost certainly built without a licence.

That extension may never be a problem. It may also be the reason your bank refuses your mortgage, the reason the town hall fines you in three years, and the reason a future buyer offers you 20% less. The Land Registry number is the only one that legally exists. Treat the rest as the seller's opinion.

4. The cadastral reference shows different boundaries than the deed

The Catastro is Spain's second property database, run by the tax authority and used to calculate IBI (annual property tax). It records boundaries with photographs and aerial maps. A mismatch between the Registro and the Catastro — different shape, different size, different parcel — is common in the countryside and surprisingly common in older urban properties too.

You can fix a mismatch (it's called a coordinación gráfica), but it costs time and money, and occasionally exposes the fact that what the seller is showing you on the ground was never theirs to sell. Cross-check the cadastral plan against the deed before you fall in love.

5. The seller insists on cash "under the table"

A request to declare a lower price on the deed than you're actually paying — the famous dinero negro envelope — is illegal, and the cost of accepting it falls almost entirely on you, the buyer.

Three reasons. First, when you sell, your capital gain is calculated against the artificially low purchase price you declared, so you pay the seller's tax for them. Second, the Spanish tax authority can and does open files years after the transaction; underdeclared deeds are flagged automatically against minimum reference values. Third, the moment you put cash in an envelope, you are exposed in any future dispute with the seller — you can't sue someone over money you swore you never paid them.

If the seller raises this, the deal is no longer about the property. Walk.

6. The estate agent recommends "their" lawyer

Independent legal advice in Spain is non-negotiable for a foreign buyer. The conflict-of-interest version — where the agent introduces you to a lawyer who quietly works on every deal that agent brings in — is the single most expensive mistake foreign buyers make. The lawyer's real client, in those cases, is the agent's pipeline, not you.

We covered this in detail in the Spanish property lawyer guide, but the rule is simple: find your abogado yourself, before you find the property. If the agent gets nervous when you mention your own lawyer, you have learned something useful about the agent.

7. There is no breakdown of community fees, debts, and pending derramas

If the property is in a building or urbanisation, it belongs to a comunidad de propietarios — a homeowners' association that collects monthly fees, holds an AGM, and votes on works. Three documents matter before you buy:

• A certificate from the administrador confirming the seller has no outstanding fees (this is required at the notary, but ask for it earlier).
• The minutes of the last two AGMs, where any planned major works (called derramas) will have been voted on.
• A schedule of the monthly cuota, broken down by ordinary fees and any current special assessment.

A €40,000 derrama for façade or lift works, voted on six months before you buy, is your liability the moment you sign — even though the seller will conveniently forget to mention it. If the seller can't produce these documents, the answer is no.

8. The off-plan developer can't show a bank guarantee

In an off-plan purchase, Spanish law (Ley 38/1999, updated 2015) requires the developer to deposit your stage payments in a separate account and to issue you a bank or insurance guarantee (aval bancario) covering every euro you pay before completion.

If the project goes bust, the guarantee is what gets your money back. It is mandatory. It is also frequently "arriving next week" in projects that never produce one. No guarantee, no payment — write that on the wall above your desk.

9. The property is rural but the listing says "buildable"

Spain has two land classifications that matter when you buy in the countryside: suelo urbano (urban land, where you can build a house under municipal rules) and suelo no urbanizable / rústico (non-developable rural land, where you generally cannot, with narrow exceptions for agricultural use).

A finca on rústico land can absolutely have a legal house on it — if the house was built before the rural protection rules came in, or under a specific exception. What you cannot assume is that you can build a new one, extend the existing one, or rebuild it after fire damage. "Buildable" on a rustic listing is a marketing word, not a legal one. Get a written cédula urbanística from the town hall before you commit.

10. The property is on the coast, and nobody mentions the Ley de Costas

Spain's 1988 Coast Law (and its 2013 reform) creates a public maritime-terrestrial domain that runs inland from the high-water mark. Buildings inside that strip have, in many cases, lost ownership rights or hold only a temporary concession. Hundreds of villas along the Mediterranean coast are affected.

If a property is within 100m of the sea — and especially if it has direct beach frontage — your lawyer needs to check the Costas certificate before you sign. This is one of the few problems in Spanish property law that has no fix. You either learn about it before, or you inherit it forever.

11. The seller wants to use a power of attorney signed abroad

Powers of attorney (poderes) are normal in Spanish conveyancing — most foreign buyers grant one to their lawyer so completion can happen without them flying in. The problem is the inverse case: the seller appears at the notary represented by a stranger holding a poder, often signed in another country.

This isn't automatically wrong. But verify three things before completion: the poder was apostilled or legalised, it is current and not revoked (your lawyer can check), and it specifically authorises the sale of this property — not a generic one. Forged or expired powers of attorney are how some of the most spectacular Spanish property frauds have been pulled off.

12. The agent says "it has a tourist licence" and won't put it in writing

Holiday-rental rules tightened sharply in 2024–2026, and in many regions (Barcelona city, parts of Mallorca, the Canary Islands, increasingly Valencia) tourist licences are either capped, frozen, or non-transferable on sale. An agent saying "it has a licence" might mean three different things:

• The property currently holds a transferable licence — fine.
• The property holds a licence that expires when the property changes hands — common, often unmentioned.
• The previous owner had a licence; the new owner can re-apply — usually a euphemism for "you cannot."

Demand the licence number and the regional tourism registry confirmation in writing. If renting it out is part of your business case, this is a deal-breaker question, not a footnote.

13. The owner can't produce the certificado de eficiencia energética or the IBI receipts

Two documents every legal Spanish sale requires:

• The energy efficiency certificate (CEE) — a rating from A to G, issued by a registered technician, valid for 10 years. The notary will ask for it.
• The latest IBI receipt (the annual local property tax), proving rates are paid.

Their absence is rarely a fatal problem in itself, but it tells you something about the seller. Owners who have lost or never collected the basic paperwork on a property they own tend to have lost or never collected the important paperwork too. Treat missing routine documents as a tell.

14. The seller is in a hurry, and the urgency makes no sense

The single most common pattern in Spanish property pressure tactics is manufactured urgency: another buyer is about to sign, the price is going up Monday, the developer's deadline ends this week. Sometimes it's real. More often it is the technique used to keep you from doing the checks in this article.

Spain has roughly 1.2 million homes for sale at any given moment. A property that can't survive a 10-day legal review was never the right property for you. The buyers we see lose the most money are almost always the ones who let the seller's clock become their clock.

A two-paragraph summary you can hand to a friend

Before any money moves: get a current nota simple, cross-check the registered surface against the listing, verify the cadastral boundaries, demand the community-fees certificate, confirm planned derramas, hire your own lawyer (not the agent's), and — if relevant — get the off-plan bank guarantee, the Costas certificate, and the tourist licence in writing. None of this is exotic. All of it is routine for a good Spanish property lawyer, and ignored by careless ones.

If anything in the deal forces you to skip a check — urgency, cash demands, "don't worry about that, it's normal here" — that's the moment to walk. There will be another property.

How Buvivo helps you avoid most of this

The reverse-search model — described in detail here — exists partly to put structure around the buyer-seller relationship before you ever see a property. When local agents reach out to you with properties that match a written brief, you start the conversation with a paper trail, not a sales pitch. That alone removes most of the urgency tactics, and it gives your lawyer a clean record of what the agent represented at every stage.

When you're ready, post your criteria. If you're still earlier in the process, the foreign buyer's guide to buying in Spain walks through the full timeline from NIE to keys.