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.

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.

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.

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.”

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.

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.

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.

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 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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