The New Battleground Under Spain’s Law 57/1968: Residential Purpose, Payment Traceability and Professional Responsibility

For readers unfamiliar with the legal framework protecting off-plan buyers in Spain, our detailed guide on Law 57/1968 and bank liability claims explains how Spanish courts have developed one of the strongest consumer protection systems in Europe.

Law 57/1968 Recovery Guide: https://www.costaluzlawyers.com/off-plan-bank-guarantee-claim-spain-guide-2026/

For more than a decade, Spanish courts have progressively strengthened the protection afforded to off-plan property buyers under Law 57/1968.

The underlying principle has remained constant: purchasers who advance funds for homes that are never delivered should not bear the financial consequences of a developer’s failure.

Yet recent litigation reveals a new trend.

Rather than disputing the existence of the deposits themselves, banks and other defendants are increasingly focusing on more technical arguments designed to avoid liability. The most significant of these concern:

• the alleged lack of a residential purpose behind the purchase;
• the bank’s claimed inability to identify the nature of incoming funds;
• and, in some cases, the consequences of advice given by professionals involved in the transaction.

These issues are becoming the new battleground in Law 57/1968 litigation.

1. Residential Purpose Remains Protected

One of the most common defences advanced by banks is that the buyer acquired the property as an investment rather than for residential use.

The argument is simple: if the purchase was speculative, the buyer may fall outside the protection intended by Law 57/1968.

The Spanish Supreme Court recently revisited this issue in Judgment 443/2026, rejecting an attempt by the bank to characterise the purchaser as an investor.

The bank argued that:

• the buyer had business interests;
• he held positions in commercial companies;
• he acted through a lawyer;
• and the contract allowed him to assign his rights to a third party.

The Supreme Court nevertheless confirmed that the purchase retained its residential character. The property had been acquired for use by the purchaser and his family as a holiday residence, and none of the circumstances relied upon by the bank were sufficient to transform the transaction into a speculative investment.

The message from the Court is clear:

Owning businesses, acting through legal representatives or retaining flexibility within a contract does not automatically deprive a purchaser of the protection granted by Law 57/1968.

We recently analysed the Supreme Court’s decision in greater detail in our article on Supreme Court Judgment 443/2026 and bank liability under Law 57/1968, where the Court clarified both residential purpose and the treatment of payments made through intermediaries.

Supreme Court Judgment 443/2026 Analysis: https://www.costaluzlawyers.com/spanish-supreme-court-443-2026-law-57-1968-bank-liability/

2. Payments Through Lawyers, Escrow Accounts or Intermediaries Do Not Automatically Protect the Bank

A second defence increasingly raised by financial institutions is that they could not have known that incoming funds represented off-plan deposits.

This argument frequently arises where funds were transferred through:

• lawyers;
• notarial escrow accounts;
• corporate structures;
• family members;
• estate agents
• or other intermediaries.

Historically, some courts accepted that banks should not be expected to investigate every incoming transfer where the payment information was vague or generic.

However, recent case law is drawing a critical distinction.

The relevant question is no longer who physically sent the money.

The real question is whether the bank could reasonably identify the payment as an off-plan property deposit.

In Supreme Court Judgment 443/2026, the transfer was ordered not by the purchaser but by his lawyer. Nevertheless, the Court considered it decisive that the payment reference contained sufficient information identifying both the development and the specific property concerned.

In those circumstances, the bank could not plausibly claim ignorance.

This is particularly important for international buyers, who frequently structure payments through professional intermediaries for practical and security reasons.

Where the transfer documentation clearly identifies the underlying property transaction, the bank’s defence becomes considerably weaker.

The growing importance of payment traceability reflects a broader trend in Spanish case law: courts are increasingly focusing on the substance of transactions rather than formalistic banking arguments. We discuss this evolution further in our review of the Supreme Court’s recent off-plan buyer protection decisions.

Off-Plan Buyers Protected Even With Intermediaries:  https://www.costaluzlawyers.com/spain-supreme-court-reinforces-law-57-1968-off-plan-buyers-protected-even-with-intermediaries-and-collective-guarantees/

3. A Current Case Under Review: When Payment References Tell the Whole Story

We are currently analysing a case that perfectly illustrates this developing area of law.

The purchasers advanced more than €1.2 million towards the acquisition of two properties in a development in Ibiza

The funds were initially held through a notarial escrow arrangement before being transferred to the developer.

At first glance, a bank might argue that it could not identify the true source of the funds because the transfers did not originate directly from the purchasers themselves.

However, the payment references contained highly specific information, including:

• the name of the development;
• the exact apartment numbers;
• and the purpose of the payments.

In addition, the amounts transferred were extraordinarily large and clearly outside the scope of ordinary commercial transactions.

Taken together, these circumstances raise a fundamental question:

Can a bank genuinely argue that it was unaware it was receiving deposits relating to an off-plan property development?

Recent Supreme Court authority suggests that the answer may well be no.

However, in this case, the issue appears to lie with the performance of the conveyancing lawyer

4. An Issue That Deserves Greater Attention: The Independence of Legal Advice

There is another aspect of these cases that deserves serious reflection.

Many purchasers relied on lawyers who were introduced by:

• estate agents;
• developers;
• marketing companies;
• or other parties with a commercial interest in completing the sale.

When a transaction later collapses, buyers sometimes discover that crucial protections were never put in place.

An independent lawyer is not there to facilitate a sale.

An independent lawyer is there to protect the purchaser.

That includes:

• verifying the existence of legally required guarantees;
• ensuring proper payment traceability;
• reviewing banking arrangements;
• identifying planning or licensing risks;
• preserving future legal remedies;
• and documenting the transaction correctly from the outset.

When these safeguards are overlooked, defendants often attempt to exploit those omissions years later in litigation.

At CostaLuz Lawyers, we have repeatedly warned that the greatest risk in many off-plan purchases is not necessarily the developer itself, but the absence of truly independent legal advice. Buyers should be particularly cautious where lawyers are recommended by estate agents, sales platforms or developers, as potential conflicts of interest may arise. As we explain in our article on branded residences and luxury developments, independent legal representation remains the most effective safeguard against future disputes.

Independent Legal Protection for Off-Plan Buyers https://www.costaluzlawyers.com/branded-residences-in-spain-luxury-living-requires-independent-legal-protection/

Readers interested in understanding whether they may still have a viable claim can consult our comprehensive guide to recovering off-plan deposits in Spain. Off-Plan Deposit Recovery Guide. https://www.costaluzlawyers.com/off-plan-bank-guarantee-claim-spain-guide-2026/

5. Can Professional Negligence Become Part of the Story?

In some cases, a further question inevitably arises.

What happens if the conduct of the legal adviser has materially contributed to the loss of protections that Law 57/1968 was designed to provide?

If a lawyer failed to:

• require mandatory guarantees;
• properly document payments;
• identify the correct receiving accounts;
• advise on legal risks;
• preserve available remedies,

the discussion may extend beyond the liability of the bank or developer.

It may become necessary to examine whether professional negligence has also played a role.

Every case must be analysed on its own facts, but this is an issue that is likely to become increasingly relevant as courts continue to scrutinise complex off-plan transactions involving multiple professional actors.

Conclusion

Recent judgments demonstrate that Spanish courts remain committed to protecting genuine purchasers under Law 57/1968.

At the same time, they reveal how the focus of litigation is evolving.

Today’s disputes are no longer limited to the existence of a bank guarantee.

They increasingly revolve around:

• residential purpose;
• payment traceability;
• banking knowledge;
• evidential burdens;
• and the conduct of the professionals involved.

For purchasers, the lesson is simple.

The Real Risk Is Not Always the Bank

One lesson repeatedly emerging from recent litigation is that buyers often focus on the developer and the bank while overlooking another critical factor: the quality and independence of the legal advice they received at the time of purchase.

In several matters currently under review, we are examining whether opportunities to recover deposits under Law 57/1968 may have been compromised by decisions taken during the conveyancing process itself.

Where a legal adviser fails to secure mandatory guarantees, fails to preserve documentary evidence, structures payments in a manner that weakens future claims, or simply neglects to advise on obvious legal risks, questions of professional negligence may arise.

The purpose of this article is not to suggest that every unsuccessful transaction involves lawyer liability.

However, purchasers should understand that independent legal advice is not merely an administrative formality.

It is often the first and most important layer of protection against the very risks that Law 57/1968 was enacted to address.