Apostilles Explained: The One Document Every Foreign Buyer Needs
A plain-English guide for first-time buyers: what it is, which documents need one, and how to get it before you sign
An apostille is a one-page certificate, issued by the government of the country where a document was created, confirming that the signature and stamp on it are genuine. When you buy property in Spain, it is what allows a Spanish notary to accept a document signed abroad. In most cases, that document is your power of attorney.
Last updated: 29 September 2026
What exactly is an apostille?
An apostille is a standard certificate created by the 1961 Hague Apostille Convention. Countries that signed the convention agreed to accept each other's official documents once an apostille is attached, so no further embassy stamps are needed. According to the Hague Conference on Private International Law (HCCH) status table, the convention had 130 contracting parties as of 30 June 2026. The UK, Poland and Spain are all among them.
An apostille only confirms who signed the document and that their stamp is real. It does not check or approve what the document says. That is why the wording of your document still matters, as explained below.
Why does a Spanish notary ask for one?
In Spain, every property purchase is completed by signing the title deed (escritura) in front of a Spanish notary. The notary is legally responsible for checking that everyone signing has the right to do so. A document from another country is just paper to them until an apostille proves it is authentic. As Spanish law firm Odice Abogados explains, a foreign power of attorney without an apostille and a sworn translation can lead the notary to refuse to authorise the deed. In practice, that means your completion date slips.
Which documents usually need an apostille when buying in Spain?
Most first-time buyers need an apostille on one document at most. This table shows the common cases:
| Document | When you need it | UK buyers | Polish buyers |
|---|---|---|---|
| Power of attorney signed before a notary at home | You won't be in Spain to sign the deed | Apostille needed | Apostille needed |
| Power of attorney signed at a Spanish consulate | Same, but signed with a Spanish consul | No apostille | No apostille |
| Marriage or divorce certificate | If the notary, bank or registry asks to confirm your marital status | Apostille needed if requested | Usually exempt under EU rules |
| Company documents | You are buying through a company | Apostille needed | Apostille needed |
The difference for Polish buyers comes from EU Regulation 2016/1191. According to the European e-Justice Portal, this regulation lets civil-status documents such as birth and marriage certificates move between EU countries without an apostille. It also offers optional multilingual forms that can replace a translation. Because the UK has left the EU, British documents do not benefit from this. The regulation also does not cover powers of attorney, so a Polish power of attorney still needs an apostille.
Do I need a translation as well as an apostille?
Usually, yes. They do two different jobs. The apostille proves the document is authentic, and the translation lets the Spanish notary read it. Spanish notaries expect a traducción jurada (sworn translation) made by a translator appointed by Spain's Ministry of Foreign Affairs (MAEC), as the Notaría Madrid guide on signing with a power of attorney confirms.
Get the apostille first and the translation second. The apostille is part of the document, so it needs to be translated too. As a rough guide, Corelex Global puts sworn translation in Spain at about €40–80 per page.
How do British buyers get an apostille?
In the UK, only the FCDO Legalisation Office issues apostilles. Here is the usual route for a power of attorney:
- Ask your Spanish lawyer to draft the power of attorney, so it contains exactly the powers the Spanish notary will look for.
- Sign it in front of a UK notary public.
- Apply online to the FCDO Legalisation Office and choose a paper apostille or an e-Apostille.
- Send the apostilled document to a sworn translator in Spain.
- Pass the original and the translation to your lawyer or representative before completion.
According to GOV.UK (checked September 2026), a standard paper apostille costs £45 per document plus courier (£32 per 1.5kg to most of Europe) and can take up to 25 working days. An e-Apostille costs £35 and usually arrives within 2 working days, but it is only available for documents electronically signed by a UK notary or solicitor. Before choosing the electronic option, ask your Spanish notary whether they will accept it.
How do Polish buyers get an apostille?
In Poland, apostilles for notarial and civil documents are issued by the Ministry of Foreign Affairs (MSZ). According to gov.pl, the fee is 60 zł per document, and you can apply in person, through someone else, or by post. The MSZ notes that some documents need an extra certification before it can add the apostille, so check this step early with your Polish notary.
Can I avoid the apostille altogether?
Yes, there are two ways. The first is to sign the power of attorney at a Spanish consulate in your country. As Odice Abogados explains, the consul acts as a Spanish notary, so the document is valid in Spain immediately, with no apostille and no translation. The second is to sign the power of attorney in front of a Spanish notary during a viewing trip, or simply to attend the completion yourself.
How early should I start?
Start as soon as you pay the reservation deposit. On the standard UK paper route, the FCDO stage alone can take five weeks, and the translation still has to follow. Completion dates in Spain are fixed in your purchase contract, so a late document can cost you more than just time. Buying through a commission-free DirecSpain listing keeps your purchase costs down, but the paperwork timeline is the same for every buyer.
Frequently asked questions
Can I get an apostille in Spain for my UK document?
No. An apostille must come from the country that issued the document. GOV.UK states that documents issued outside the UK must be legalised in the country where they were issued.
Does the apostille itself need translating?
Yes. The sworn translation should cover the whole document, including the apostille, so the Spanish notary can read everything that is attached.
Do I need an apostille to get my NIE?
Not usually, if you apply in person with your original passport. If someone applies on your behalf, they will need your power of attorney, and that document is where the apostille comes back in. Read our NIE guide for the full process.
I'm Polish. Does my marriage certificate need an apostille?
Usually not. Under EU Regulation 2016/1191, Polish civil-status documents are accepted in Spain without an apostille, and a multilingual standard form can replace the translation.
Is an apostille the same as a notarised document?
No. A notary witnesses your signature. The apostille is a second, government-issued step that confirms the notary's own signature and seal are genuine.
