September is one of the best months to be serious about buying on the Costa del Sol. The summer frenzy has thinned out, the sea is still 24°C, and agents actually have time to show you properties properly. If you've been researching from Toronto, Geneva or Moscow, this is the moment to convert research into action — and that means understanding the legal and financial process in precise detail.

First, the 2026 Political Noise — Addressed Directly

You may have read headlines about Spain planning a "100% tax on foreign property buyers." Here is the accurate position: the widely reported "100% tax on foreigners" has not been enacted. As of mid-2026, no blanket ITP surcharge for non-EU buyers exists in Spanish law. The proposal was announced in early 2025 as part of a housing package, but it has not been debated or voted on in Congress, and it was left out of the government's 2026 housing proposals. What did change is procedural: Royal Decree-Law 2/2026, published in the BOE on 4 February 2026, modifies tax-base calculations for property transfers, strengthens non-resident reporting obligations, reinforces AML verification at the notarial deed stage, and expands tenant protections in long-term rental contracts. This means your lawyer and your notary will scrutinise source-of-funds documentation more carefully than before. Come prepared.

Spanish law does not restrict foreign nationals, whether EU or non-EU, from purchasing real estate. In Málaga province, the share of foreign buyers reached 42.9% of all transactions — the highest figure of any Spanish province — with around 37,800 transactions recorded in 2024. The market is built on international demand. You are not an exception; you are the norm.

Step 1: The Search — Why the Agent You Choose Changes What You Can Buy

Most buyers start on Idealista or Kyero — the two dominant portals. Both are useful for orientation: price-per-square-metre comparisons, area mapping, stock levels. But the listings you see are the tip of the iceberg. Enquiries from the United States continue to grow on Kyero, reinforcing the view that American buyers are becoming a more significant part of Spain's international property market — which means competition for the best portal-listed properties is intensifying.

The real advantage of a boutique agency — one that speaks your language and covers a defined stretch of coast — is access to off-market stock and developer relationships. For estate agents, the increasing diversity of buyer nationalities has practical implications: marketing strategies, languages, buyer expectations and purchasing motivations continue to vary, making local knowledge more valuable than ever. At Mava Signature, which operates in English, French and Russian across the Fuengirola-to-Marbella corridor, a significant share of our new-build and off-plan introductions never appear on Idealista. Developers building in Mijas Costa or Nueva Andalucía often release units to trusted agencies first, with a window of weeks before public listing.

Step 2: Making an Offer — The Reservation Contract

Found the apartment above Carvajal beach or the off-plan villa in Benahavís? The first legal step is a reservation contract (contrato de reserva). This takes the property off the market while due diligence begins. The deposit is typically €3,000–€10,000 for most properties; on higher-value Marbella Golden Mile stock it can run to €20,000. In the vast majority of cases this deposit is refundable if due diligence reveals a material problem — but the exact refund conditions must be written into the contract. Do not sign a reservation contract without your lawyer reviewing it first.

Note: garages, storage rooms and parking spaces sold separately from the main dwelling attract IVA at 21% rather than 10% — a detail that catches some buyers off guard when buying off-plan with a separate parking annexe. Clarify the parking structure before you reserve.

Step 3: Your NIE Number — Get This Before Everything Else

An NIE (Número de Identidad de Extranjero) is the tax and identification number Spain assigns to foreigners, and you need one before you can work, buy property, open a bank account or file taxes there. Applying is cheap — the official fee is €9.84, paid with form 790 (código 012), using application form EX-15. You apply in person, either at a Spanish consulate in your home country or at a police station or Foreigners' Office in Spain.

On timing: if you need a NIE before travelling to Spain — for example, you're buying property remotely and the notary needs your NIE to prepare the escritura — you can apply at the Spanish consulate in your home country, bring the same core documents, and the NIE will be issued by post or collected in person. This process typically takes 2–6 weeks. If you are already in Spain, applying in person at the Málaga Foreigners' Office (Avenida de la Aurora) typically produces a result within a few days, though cita previa (appointment) availability fluctuates. Your lawyer can also apply on your behalf with a notarised power of attorney. Your NIE number does not expire; it is valid for life.

You will also need a Spanish bank account — most notaries require payment by certified bank cheque drawn on a Spanish bank. Opening one as a non-resident is straightforward at Sabadell, Unicaja or CaixaBank with your NIE and passport, though AML checks under the new decree mean additional documentation for funds originating outside the EU.

Step 4: Due Diligence and the Private Purchase Contract

Once the reservation is signed, your independent lawyer conducts due diligence. This is not optional — it is the most important money you spend in the entire process. Notaries, banks, estate agents and lawyers acting in Spanish property transactions are obligated under Spain's AML legislation to verify the identity of all parties, the source of funds and the economic rationale of the transaction. Your lawyer will check:

Lawyer fees in Málaga province run €1,500–€3,000 for a standard residential purchase, typically 1% of purchase price. Spend this money. A €2,000 legal bill has saved clients from properties carrying €40,000 in undisclosed community debts.

Once due diligence clears, both parties sign the contrato de arras (private purchase contract) — usually arras penitenciales under Article 1454 of the Civil Code. At this stage, the buyer pays 10% of the purchase price as deposit. If the seller pulls out, they owe you double. If you pull out without legal cause, you forfeit the deposit. This contract is binding.

Step 5: Completion at the Notary — The Escritura Pública

Completion (firma) takes place at a Notaría — a state-appointed notary public. In Fuengirola, Marbella or Estepona, the entire process typically takes 45–90 minutes. The notary reads the deed aloud (in Spanish; your interpreter or bilingual lawyer translates), both parties sign, and keys are exchanged. The decree reinforces the obligation for notaries to verify the tax identification of non-resident buyers (NIE) and to confirm AML compliance documentation at the point of deed execution. Bring your NIE certificate, passport, and evidence of the source of funds — bank statements, salary history, or sale proceeds from another property.

Payment is made via certified cheque(s) or bank transfer confirmed before signing. The notary registers the deed with the Land Registry, and you are the legal owner.

Step 6: The Total Purchase Costs — What to Budget Beyond the Headline Price

This is where many buyers — particularly those comparing Costa del Sol to Toronto or Paris real estate — underestimate their cash requirement. Foreign buyers in Málaga routinely underestimate transfer tax and professional fees by €8,000–€15,000 on a €300,000 apartment. Here is the honest breakdown for Andalucía in 2026:

New-build (including off-plan from a developer):

Resale property:

One additional point for non-residents: non-resident buyers now face clarified reporting timelines under the 2026 decree, which consolidates the obligation to file Modelo 210 (non-resident income tax return on imputed rental income) within specified deadlines. Budget €200–€400 per year for a gestoría to handle this filing, even if the property sits empty all year.

The Andalucía Advantage — and Why September Is the Right Moment

For buyers on the Costa del Sol, regional tax rules in Andalusia currently offer some of the most competitive rates in the country. Paired with Málaga province recording 11.9% price growth in Q2 2025, with average values now exceeding €3,000/m², the case for acting in the autumn window — before the spring market heats up again — is real.

The off-plan pipeline between Fuengirola and Marbella remains the most compelling entry point: growing interest in new-build properties is driven by energy efficiency, modern standards and clearer tax structures, and the 15–25% capital appreciation that typically occurs between reservation and completion on a well-chosen development has held across multiple construction cycles on this coast.

If you are at the stage of shortlisting developments or comparing resale options between El Higuerón, Mijas Costa and Nueva Andalucía, we'd welcome a conversation. The question worth asking yourself right now: do you want to be signing your arras in September, or watching prices from the same spreadsheet in March?