In March 2026, the Supreme Court consolidated a line of case law that the sector cannot ignore: the bank’s liability for advance payments made by the buyer in an off-plan development does not disappear simply because of the buyer’s profile. Supreme Court Judgment 443/2026, dated 23 March, does not introduce a radical change to the law, but it does reinforce the standard required of developers and financial institutions. And this has direct practical consequences for any professional operating in the new-build market.
The case and the Supreme Court’s ruling
In 2005, a British citizen signed an off-plan sale and purchase agreement and paid more than 160,000 euros to the developer. The development was never built and the money was not refunded. The buyer made a claim directly against the bank where the developer had deposited those advance payments, under the provisions of Law 57/1968, which obliges financial institutions to ensure that such funds are deposited in special accounts and are guaranteed.
The bank sought to evade this liability by arguing that the buyer was not acting as a consumer but as a speculative investor, and that therefore the protection afforded by Law 57/1968 did not apply to him. The Supreme Court, in its judgement 443/2026 of 23 March, rejected this argument. The Civil Chamber concluded that there was insufficient evidence to undermine the residential purpose of the transaction, and that the financial institution cannot shirk its duty to monitor advance payments simply by claiming that the buyer is an investor.
The Supreme Court is not introducing anything new: it is consolidating an interpretation that already existed, but reinforcing it in the face of a recurring banking strategy. This is what matters to the sector.
Why this matters to the developer and the estate agent
Law 57/1968 establishes three specific obligations for any new-build development that receives advance payments from buyers before the handover of the keys: the funds must be deposited into a special bank account, linked exclusively to that development; the bank opening that account assumes responsibility for monitoring those funds; and each buyer is entitled to receive a bank guarantee or individual, named surety bond for the exact amount paid, issued by the institution or insurer covering the transaction.
When these three conditions are met, the system works: if the developer fails to hand over the property, the buyer gets their money back. When they are not met, or are met inadequately, the transaction can turn into a legal dispute lasting years, as is the case with these legal proceedings, which have now reached a final judgement after nine years, and which damages the reputation of all those involved: the developer, the agency and, in many cases, the bank.
Judgment 443/2026 does not change the law, but it does send a clear message: the courts will not accept formal arguments designed to evade that liability.
What the foreign buyer expects
The foreign buyer – whether British, Dutch, Canadian or from any other country – who purchases off-plan in the Mediterranean region was not aware of Law 57/1968. But they do know whether the process inspires confidence or raises doubts. And in this market, doubts bring transactions to a standstill.
Before the first payment is transferred, a specialist solicitor must have verified at least the following:
- That a special account has been opened in the name of the development, separate from the developer’s ordinary account.
- That the bank guarantee or surety bond is individual, issued in the name of the specific buyer, covers the exact amount paid and allows for direct enforcement without the need to prove the developer’s fault.
- That the institution issuing the guarantee or bond complies with the legal requirements applicable in Spain for this type of guarantee.
- That the payment milestones in the private contract coincide with the construction deadlines and that there is a monitoring mechanism linking them.
An estate agent who can tell their client that all this has been verified before signing is not adding an extra step. They are removing the main obstacle to the decision to buy.
The lesson to be learnt from the ruling
It is important not to overestimate the implications of Supreme Court Ruling 443/2026. It does not establish that any foreign buyer has an automatic guarantee of recovering their money in the event of a problem. What it does is reinforce the view that the banking strategy of classifying the buyer as an ‘investor’ to evade liability under Law 57/1968 is difficult to reconcile with current case law.
Each case has its own facts, and the courts will assess the specific circumstances.
What is clear, however, is that case law continues to require the bank receiving advance payments for a property development to fulfil its supervisory role. And it is this requirement that protects the buyer, the estate agent and the developer who works diligently.
However, it is worth bearing in mind that the facts analysed by the Supreme Court arose under Law 57/1968, a piece of legislation that was repealed at the end of 2015. Consequently, automatically applying the conclusions of this judgement to the current new-build market may be misleading.
Today’s buyer faces a different legal landscape which, in certain respects, offers less protection than that provided under Act 57/1968.
Under the regulations in force since 2016, the obligation to guarantee advance payments does not come into effect automatically upon the transfer of funds, but only once the building permit has been granted. This ‘temporary gap’ and the fragmentation of the current system leave the buyer more exposed to the developer’s insolvency. For this reason, a pre-purchase legal due diligence is not an optional formality; it is an essential safeguard to verify that payments are effectively protected and that the financial institution assumes its responsibility as the actual guarantor of the funds handed over – a protection which, now more than ever, requires active and professional management on the part of the buyer.
At Fuster & Associates, we advise international buyers on new-build transactions throughout the Mediterranean region. Our work focuses on the legal verification of guarantees prior to signing.
For further information or personalised advice, please do not hesitate to contact us.
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