How to Safely Buy Off-Plan Property in Spain — Bank Guarantees and Deposit Protection

Short answer: buying off-plan in Spain is safe — but only if the developer's mandatory bank guarantee and ring-fenced special account are in place before you transfer a single euro. Miss that check, and you have no legal protection at all until the building licence is issued.

Last updated: 17 August 2026

What Spanish law forces every off-plan developer to do

Every developer selling homes before completion in Spain — venta sobre plano — must guarantee that every euro you pay in advance, plus statutory interest, will be returned to you if the property is never delivered. That obligation lives in the First Additional Provision of Ley 38/1999, the Building Regulation Act, in the wording introduced by Ley 20/2015 and in force since 1 January 2016 (BOE — Ley 38/1999).

According to the Bank of Spain, the developer's duty to guarantee arises from the moment the town hall grants the building licence (licencia de edificación), and every advance payment must be deposited into a dedicated special bank account (Banco de España — Avales para compra de viviendas).

Two forms of guarantee — and what the paperwork must show

Under the same provision, the guarantee can take one of two forms — both legally equivalent, both valid:

• Seguro de caución — a surety-insurance policy issued by an insurer authorised to operate in Spain.
• Aval bancario solidario — a joint-and-several bank guarantee issued by a credit institution.

The guarantee must cover the full amount paid in advance, including any taxes, plus statutory interest running from each payment date to the contractually agreed delivery date, per the Bank of Spain (Banco de España). You should receive an individual certificate in your own name — not just a reference to a group policy in the contract.

The special account matters more than most buyers realise

Ley 38/1999 also requires that your deposits are paid into a separate bank account earmarked for the project, from which the developer may only draw funds for actual construction costs (BOE — Ley 38/1999, DA 1ª).

This matters because Spain's Supreme Court, in judgment STS 733/2015, held that a bank receiving buyer money without insisting the developer parks it in the ring-fenced account itself becomes liable to the buyer for those amounts — even when the bank never issued a guarantee (Banco de España). Ask what the special-account number is, and wire only to that number.

Pre-transfer checklist

Before any money leaves your account, you should have paper copies of every item below:

1. The licencia de edificación issued by the town hall.
2. The individual guarantee certificate (aval or seguro de caución) in your name.
3. The name of the guarantor bank or insurer stated on the reservation contract.
4. The number of the cuenta especial you will wire your deposit to.
5. A recent nota simple from the Land Registry showing the developer owns the plot.
6. A written reservation contract with a staged payment schedule.
7. The developer's tax ID (CIF), matching the seller shown on the final escritura.

Red flags — walk away

• You're asked to pay before the building licence has been granted — the legal guarantee obligation doesn't yet exist, so you have no protection under Ley 38/1999.
• Payment requested in cash, or to any account that isn't the named cuenta especial.
• No named insurer or bank on the contract.
• No individual guarantee certificate ever produced — only vague "our clients are protected" wording.

Failure to constitute the guarantee is itself a regulatory infringement and can carry a sanction of up to 25% of the amounts that should have been secured, per the same law (BOE — Ley 38/1999, DA 1ª).

What happens if the developer defaults

If construction doesn't start, or doesn't finish on time, or the property never gets its cédula de habitabilidad or licencia de primera ocupación, you formally demand the return of your money from the developer. If they don't repay within 30 days of the formal request, you can claim directly against the guarantor bank or insurer, per the Bank of Spain (Banco de España — Avales).

The guarantee is only cancelled once the property is legally habitable and the developer proves delivery to you.

Why this matters on the Costa Blanca

The Costa Blanca — Torrevieja, Orihuela Costa, Villajoyosa, Alicante — has some of Spain's densest off-plan activity, and standards vary. DirecSpain is a commission-free portal that lists off-plan projects only from agencies who work directly with developers, so the guarantee documentation is on file from the reservation stage.

FAQ

Am I protected if I pay before the building licence is granted?

No. The statutory guarantee obligation only kicks in once the licence is granted, per Ley 38/1999. Any reservation payment before that point sits outside the law's protection unless the developer arranges a separate contractual guarantee.

Does the guarantee cover the VAT (IVA) I paid on my deposits?

Yes. The Bank of Spain confirms the guarantee must cover the full amounts advanced, including applicable taxes, plus statutory interest.

What if the developer offers a lower price if I skip the guarantee?

Refuse. The guarantee obligation is not optional under Ley 38/1999 — a developer trying to waive it is either uninformed or a red flag.

Do I need a Spanish lawyer to check all this?

For an off-plan purchase, an independent