Common mistakes when buying a new-build apartment in Spain: how to avoid them.

New-build apartments have become one of the main segments of the Costa del Sol real estate market. Modern architecture, energy efficiency, a smart home, and the ability to join the project at an early-stage price make them especially attractive to international buyers. However, buying property that does not yet exist requires extra caution. Mistakes along the way can be costly, but almost all of them can be prevented with a well-thought-out approach. In this article, we will look at the most common mistakes when buying a new-build and how to avoid them.

Why new-builds require special attention

When buying a ready home, you see what you are buying. When buying a new-build, you invest based on plans, specifications, and the promised handover date. This creates a specific set of risks: delays in timelines, changes to the property’s characteristics, the developer’s financial difficulties, and differences between the marketing materials and the final finishes.

The good news is that Spanish legislation, over the past decades, has built a serious system to protect new-build buyers. The key risks are manageable if you know about them in advance and act in a disciplined way. Let’s go through the main mistakes in order.

First mistake: not checking the developer’s reputation

The most common and dangerous mistake is insufficient due diligence on the developer. The project may look flawless in renderings, but what matters most is who stands behind it.

How to avoid it. Evaluate not only the project itself, but also the developer’s track record. It is important to find out the company name, its registration in the Spanish commercial registry, in Spanish Registro Mercantil, its financial stability, experience, and whether the developer met deadlines and obligations on past projects. You should also check whether there are any open claims by creditors or encumbrances related to the company. It is the assessment of the developer’s reputation, not only the attractiveness of the project, that is considered one of the most effective ways to reduce risk.

Second mistake: not checking the bank guarantee

This may be the most critical mistake. Under Spanish law, the developer must provide a bank guarantee or an insurance policy that covers one hundred percent of all advance payments made before construction is completed. This guarantee, in Spanish aval bancario, is your main protection mechanism: if the project is not completed on time or the developer goes bankrupt, you have the right to get back all funds paid plus legal interest.

How to avoid it. Never make payments without a valid bank guarantee, and this applies even to the initial deposit. Every payment must be protected. It is important to check that the guarantee covers your specific property and your amount, not just the project in general. The guarantee is valid from the moment the building permit is obtained.

Third mistake: not making sure there is a construction license

Another serious mistake is paying money before the developer has obtained the required planning permissions.

How to avoid it. Before signing anything, make sure the developer has received a construction permit, in Spanish licencia de obras, from the local authorities. A developer that requests payments before obtaining this permit is acting unlawfully. Keep in mind that processing such permits can take up to a year, so you should check whether they exist or what the submission status is even before signing any contract.

A separate important document is the license for first occupancy, in Spanish licencia de primera ocupación, which is issued after construction is completed. It confirms that the property meets building regulations and is suitable for living. Without it, it is not possible to connect utilities and properly register ownership.

Fourth mistake: signing a contract without independent legal review

Probably the main systemic mistake that leads to all the others is refusing independent legal support. Experience shows that buyers who run into problems almost always skip an independent legal check at one of the stages, relying on a lawyer recommended by the developer, or signing a contract with a vague handover date based on the seller’s assurance that “this is how it is done.”

How to avoid it. Hire an independent lawyer who specializes in Spanish real estate law and has no connection to the developer or the agent. You can verify their authority through the bar association, in Spanish Colegio de Abogados. The lawyer will check permits, the bank guarantee, the payment schedule, and the contract, and will also conduct a check in the property registry. Independent legal review is not a formality. It is the step that distinguishes a reliable investment from an expensive dispute.

Fifth mistake: not including penalties for delays in the contract

Delays in handing over new-build projects are not uncommon. According to some estimates, a noticeable share of projects on the Costa del Sol are delivered with delays of six months or more compared to the contractual timelines. It is a mistake to sign a contract without protection mechanisms against this.

How to avoid it. The contract should include a clear handover date and penalty clauses for delays. A reasonable practice is to specify a penalty for each month of delay after the contractual date, and also to set a maximum period after which the buyer has the right to terminate the contract with a refund. It is also useful to include an obligation for the developer to provide regular photo updates on the construction progress.

Sixth mistake: not protecting against changes in specifications

There is a lot of time between signing the contract and handover, and the final finishes sometimes differ from what was shown in the marketing materials. The materials may change due to supply issues or updates to the project.

How to avoid it. Require a detailed specification that names specific brands or equivalents for the characteristics, and attach it to the contract along with the plans. It is reasonable to include the right to a price reduction or to withdraw if there is a significant deterioration of the characteristics compared to what was promised.

Seventh mistake: not checking the district’s urban planning plans

Buyers often forget to look at the future of the area, and that is a mistake. Each municipality publishes its urban planning documentation, in Spanish Plan General de Ordenación Urbana. By studying it, you can learn about development plans and how nearby land will be used.

How to avoid it. Check the urban planning plans: it is possible that in a few years a large project will appear near your future home, or, on the contrary, new roads will be built that improve connections to the airport. This check is especially important when buying a plot of land, where you should confirm whether development is actually possible.

Eighth mistake: not accounting for all costs and parking

When buying, it is easy to focus on the property price and overlook related costs and details. A common mistake is not making sure that parking spaces and storage rooms are correctly included in the contract.

How to avoid it. Calculate the full budget in advance, including taxes and related purchase costs, which in Spain add a significant share to the price. Make sure that all elements of the property, including parking and the storage room, are explicitly stated in the contract.

How a safe new-build purchase works

If we put everything together, a safe new-build purchase is built on discipline and consistency. First, you choose the property and make a small reservation payment. Then, after careful verification, a private purchase contract, in Spanish contrato privado de compraventa, is signed, with an advance payment typically of 20 to 30 percent of the price after deducting the reservation. This contract sets out the payment schedule, handover date, penalty clauses, and technical specifications. After construction is completed and the first occupancy license is obtained, you conduct an inspection for defects, in English snagging, and then sign the notarial deed, in Spanish escritura, make the final payment, and receive the keys. The final mandatory step is registering the property in your name in the registry.

It is also worth remembering the protection provided by law: all new-builds in Spain have a mandatory ten-year structural warranty that covers serious defects.

Discipline instead of emotions

The main takeaway is simple: a successful new-build purchase requires separating emotions from the dream home from the clinical discipline needed for a reliable investment. By insisting on the bank guarantee, checking licenses, and hiring an independent lawyer, you turn a potentially risky deal into a protected and beneficial one.

All the listed mistakes have one thing in common: they are prevented by timely professional support. A competent agent and an independent lawyer who know the Costa del Sol market will guide you through each stage, check the documents, and protect your interests.

The ABARZO team helps buyers navigate the new-build market in Marbella safely and will suggest verified independent lawyers to support the transaction. The full Marbella real estate catalog is available on our website.

Please note that the information provided is general and for informational purposes only and does not constitute legal advice. Transaction terms and requirements vary, so you should always clarify the details with a qualified Spanish lawyer.

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