The licence
Ask whether the building licence has been granted, and for the date. Before that point the statutory guarantee has not yet arisen, however the reservation is described.
Bank Guarantees on Off-Plan Property · 2026 Guide What actually protects your deposit
Spanish law guarantees the money you pay during construction. It does not guarantee all of it, from the moment you pay it, and the gap is where buyers get caught.
When you buy off-plan you pay for a home that does not exist yet. Spanish law answers that with a specific mechanism: the money you hand over during construction has to be guaranteed, held apart from the developer's own funds, and returned with interest if the home is never delivered. Knowing exactly how that protection works -- and the one point at which it does not yet apply -- is the difference between an informed off-plan purchase and a hopeful one.
The Law As It Stands
Ley 38/1999, not Ley 57/1968
A great deal of English-language material about Spanish off-plan purchases still cites Ley 57/1968 as the source of your protection. That law was repealed with effect from 1 January 2016. Its regime was carried over, with changes, into the first additional provision of Ley 38/1999 (the Ley de Ordenación de la Edificación), in the wording given to it by Ley 20/2015. If a page tells you Ley 57/1968 protects your deposit today, it has not been updated in a decade -- and the changes are not cosmetic.
What The Developer Must Do
Four obligations, not one
A segregated account
Advance payments must be received through a credit institution and deposited in a special account, kept separate from any other class of funds. Money may only leave that account for costs arising directly from the construction of those homes. It is not the developer's working capital.
A guarantee
Repayment must be guaranteed, either by a seguro de caución with an insurer authorised to operate in Spain, or by an aval solidario issued by an authorised credit institution. Both are acceptable; what matters is that one of them exists and names you.
Disclosure in the contract
The purchase contract itself must state the developer's obligation to repay, identify the insurer or guarantor, and identify the credit institution and the account. At signing you should also be handed the document evidencing the guarantee attached to your particular payments.
Consequences of skipping it
Failing to put the guarantee in place is treated as a consumer-protection infringement, carrying a penalty of up to 25% of the amounts that should have been secured, on top of anything the regional building rules impose.
The Part Most Guides Omit
The guarantee starts at the building licence
The obligation to guarantee repayment runs from the point the building licence is obtained -- not from the moment you first pay. This is one of the substantive differences between the current regime and the 1968 law it replaced, and it is the single most practical thing to understand before you reserve.
In plain terms: if you pay a reservation fee on a project whose licence has not yet been granted, that money is not sitting behind the statutory guarantee. It may well be protected by what your contract says instead -- many reservation agreements make the fee refundable during a due-diligence window, and that is a contractual protection, not a legal one. The two are not interchangeable, and only one of them is the same at every developer.
This is not a reason to avoid pre-licence projects. It is a reason to know which category a project is in before you transfer anything, and to have your lawyer read the reservation terms rather than assume the statute covers you. Every project on this site states its licence status in its own trust dossier, in those words, because the distinction changes what your money is standing on.
If It Goes Wrong
What you can actually recover
If construction does not begin, is not finished within the agreed period, or the habitation certificate is not obtained, you may claim back the amounts paid on account -- including the taxes applied to them -- plus statutory interest. You can either terminate the contract or grant the developer an extension, which is recorded as an additional clause setting the new delivery date.
The practical lesson is that the guarantee is only as useful as the paperwork behind it. Ask for the guarantee document at signing, check it names you and your specific payments, and keep it. A guarantee that exists in principle but was never issued to you is the failure mode this provision was written to prevent.
What It Pays
What the guarantee actually returns
A guarantee is not compensation for a purchase that went wrong. It is a return of what you handed over, and knowing its edges is what stops it being mistaken for something wider.
Covered
The amounts paid on account, the taxes charged on those amounts, and statutory interest from the date each payment was made.
Not covered
The gain you expected. If the finished market moved while you waited, the guarantee returns your money and not the difference. It restores your position; it does not deliver the bargain.
Also not covered
Costs you incurred around the purchase -- legal fees, travel, a mortgage arrangement fee already paid. Those sit outside the statutory guarantee and belong to whatever your contract says about them.
Checking Yours
How to confirm yours actually exists
A guarantee that exists at the level of the development is not the same as one issued for your payments. These are the four things to establish, in this order, and none of them requires taking anyone's word for it.
The account
The contract should identify the credit institution and the special account, and your payments should go there rather than to a general company account. Compare the account on the contract with the one on the payment instruction.
The document
Ask for the certificate or policy that covers your payments specifically. It should name you, name the unit, and state the amounts. A master policy for the development is the frame, not the cover.
The issuer
Check the insurer or bank named on it is authorised to operate in Spain. This takes one search and it is the step people skip.
Keep the document. The failure this provision was written to prevent is not a developer refusing to pay -- it is a buyer discovering, years later, that nothing was ever issued in their name.
If It Fails
Why you are not a creditor in a queue
This is the part that explains the whole design. If a developer becomes insolvent, unsecured creditors line up against whatever the estate holds, and that process is slow and rarely whole.
A guaranteed buyer is not in that queue. The claim runs against the insurer or the bank that issued the guarantee, which is a solvent third party with its own obligation to you, and it does not depend on what the developer has left. That is the difference the paperwork buys, and it is why a guarantee held in your own name matters more than a reassurance that the development is covered.
Common Questions
What buyers ask us about guarantees
Is my reservation fee guaranteed?
Only once the building licence has been granted. Paid before that, it rests on the wording of your reservation agreement instead, which is a contractual protection rather than a statutory one, and it differs between developers.
Who pays for the guarantee?
The developer. It is their obligation and their cost, and it should not appear as a charge added to your payments. If it does, ask what it is.
What if the developer refuses to give me the document?
That is a reason to stop rather than to press on. The obligation to hand it over sits with them, and a developer who will not produce it at signing is telling you something about how the rest of the purchase will go.
Does the guarantee cover a delay, or only non-delivery?
It is triggered where construction does not begin, is not finished within the agreed period, or the habitation certificate is not obtained. A delay that runs past the agreed period reaches it; a delay inside that period is a contract question.
Does it transfer if I assign the contract?
Not automatically in the sense that matters. Where a contract is assigned, the guarantee has to follow the new buyer in writing, and that is a step to confirm rather than assume.
Before You Rely On This
Sourced from the consolidated statute
The obligations described on this page are taken from the first additional provision of Ley 38/1999 as consolidated after Ley 20/2015, and are current as of August 2026. This is general information about how the protection is structured; it is not legal advice, and how it applies to a particular contract is a question for your own lawyer. Nueva Living confirms licence status and guarantee arrangements in writing for a specific project on request.
This guide is general information about buying a new-build home on the Costa del Sol. It is not legal, tax or financial advice, and does not replace independent professional advice tailored to your situation.
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