The Complete Checklist for Buying an Apartment Overseas

Buying a flat in your own country, you already know the rhythm — you've probably watched a parent or a friend do it. Buying overseas, none of that intuition transfers. The paperwork has different names, the timeline moves at different speed, and the person you'd normally call for advice has never done this either. This is the checklist we wish every first-time overseas buyer had before their first viewing, not after their first surprise.

Why buying overseas isn't just "buying a house, abroad"

Three things catch most first-time overseas buyers off guard, regardless of which country they're buying in:

• You need a tax/fiscal identity number before you can do almost anything. In Spain this is the NIE (Número de Identificación de Extranjero) — you can't open certain bank accounts, sign a purchase contract, or pay taxes without one. Getting it takes time, so it needs to be first on your list, not an afterthought.
• The professionals you'd normally trust by default don't automatically have your interests aligned. The estate agent is usually paid by the seller. Using the developer's or seller's recommended lawyer without your own independent one is one of the most common regrets overseas buyers report.
• Non-residents often owe tax obligations they didn't know existed — including, in Spain, an annual tax on the notional rental value of a property you own but don't rent out, even if you never once let it out.

None of this is disqualifying — hundreds of thousands of foreign buyers navigate it every year, particularly on Spain's Costa del Sol. It just means the order you do things in matters more than it would at home.

The single most common piece of advice from buyers who've done this before: get your own independent lawyer before you get emotionally attached to a property, not after.

The document checklist

Using Spain as the reference point (the process is broadly similar across much of Southern Europe), here's what a clean purchase actually requires. Your lawyer should be verifying all of the seller-side documents below independently — don't take the estate agent's word for any of it.

The people you'll need on your team

The purchase timeline, step by step

A typical resale purchase in Spain runs roughly like this — off-plan/new-build timelines are longer and staged against construction, covered in the next section.

Taxes and ongoing costs people forget about

This section is general orientation, not tax advice — rules and rates change and depend on your personal residency status, so confirm specifics with a qualified tax advisor before you buy. That said, the costs people are most often surprised by:

• Purchase taxes (transfer tax on resale, VAT + stamp duty on new-build) — typically due at completion, on top of the purchase price.
• Annual non-resident income tax — in Spain, non-residents owe a notional tax on a property even if it's never rented out, calculated on a percentage of the cadastral value. Many first-time buyers don't discover this until their first filing deadline arrives.
• IBI — the annual local property tax, billed regardless of residency status.
• Community fees — the monthly/quarterly charge for shared building costs, one of the most commonly misunderstood line items for first-time overseas buyers.
• Ongoing gestoría/tax advisor fees — small but recurring, for annual filings.

The non-resident notional-income tax in particular catches almost every first-time buyer off guard — a qualified tax advisor who specializes in non-resident owners is worth engaging early, not after the first filing deadline arrives.

Buying off-plan? Ask these before you sign

Off-plan (buying before or during construction) adds a layer most resale purchases don't have — you're trusting a delivery date and a specification that doesn't exist yet. We cover this in full in 10 questions to ask before buying an off-plan apartment; the short version, before signing anything:

• Is my stage-payment deposit protected by a bank guarantee or insurance, as legally required?
• What happens contractually if the completion date slips?
• Can I see the exact finishes specification, not just the showroom sample?
• What amenities are actually confirmed and funded — vs. "planned"?
• What happens for the first few months after handover, while the building fills up? Is there a single point of contact for residents, or does everyone call the sales office?
• What are the projected community fees, and who set that estimate?

That second-to-last question is worth pushing on. A growing number of new developments are answering it with a resident-facing AI concierge — a single number/app residents can reach for anything, from day one, in their own language, rather than relying on an overwhelmed sales team. If a development you're considering has one, it's a genuinely good sign about how much thought went into what happens after the sale closes — see our companion piece on what actually helps a development succeed post-handover if you want the fuller picture.

Common first-time buyer mistakes

Frequently asked questions