Due Diligence for New Build Property in Spain (2026 Legal Guide)

Buying a new build or off-plan property in Spain can be very appealing. Modern homes, energy efficiency, payment stages, and developer incentives often make new builds attractive to foreign buyers. However, new build purchases come with a very different legal risk profile compared to resale properties — and this is where many buyers get caught out.

Unlike resale purchases, where you are buying something that already exists, off-plan and new build purchases involve committing money to a property that may not yet be finished, or in some cases not yet started. This means your legal protection depends heavily on correct licences, contracts, bank guarantees, and developer compliance from day one.

At Platinum Legal Spain, we regularly see buyers who assumed that “new build” automatically means “safe”. Unfortunately, this is not always the case. Poorly drafted contracts, missing bank guarantees, delayed licences, and financially weak developers can all turn what looks like a dream purchase into a long and stressful legal problem.

This guide explains the legal checks your lawyer should carry out when buying a new build or off-plan property in Spain, the most common risks, and how to protect your money throughout the construction process.

If you are still deciding between a new build and a resale property, you may also find our guide helpful: Due Diligence for Resale Properties in Spain.

Developer Due Diligence – Who Are You Really Buying From?

One of the most important differences in a new build purchase is that you are not just buying a property — you are buying into a developer’s project. Your lawyer must therefore carry out checks on the developer as well as the property.

These checks typically include:

• ✔️ Verifying the developer’s legal identity and ownership of the land
• ✔️ Confirming the developer has the legal right to build on the plot
• ✔️ Reviewing the developer’s financial structure and history
• ✔️ Checking for existing charges, loans or encumbrances on the land

This step is crucial, particularly for smaller or lesser-known developers, and in cases where projects are funded through staged buyer payments.

Planning and Building Licences

No buyer should commit to an off-plan purchase without confirmation that the correct planning permissions are in place.

Your lawyer must check:

• ✔️ The building licence (Licencia de Obra) issued by the local town hall
• ✔️ That the development complies with local urban planning rules
• ✔️ That the project matches approved plans and specifications

At completion, further checks are needed to confirm the First Occupation Licence (or equivalent) has been granted. Without this licence, utilities may not be connected and resale or rental can be restricted.

Bank Guarantees – Protecting Your Stage Payments

Spanish law requires that buyers’ off-plan stage payments are protected by a bank guarantee or insurance policy. This guarantee ensures your money is refunded if the developer fails to complete the property.

In practice, this protection is often missing, incomplete, or incorrectly issued if not properly checked.

Your lawyer should ensure:

• ✔️ A valid individual or collective bank guarantee exists
• ✔️ The guarantee covers all stage payments made
• ✔️ The guarantee is issued before funds are transferred

Never assume a bank guarantee exists just because the developer says so. We insist on documentary proof before advising any payment.

Reviewing the Off-Plan Purchase Contract

Developer contracts are rarely balanced in favour of the buyer. A thorough legal review is essential.

We review and negotiate clauses relating to:

• ✔️ Payment schedules and protection of deposits
• ✔️ Construction deadlines and penalties for delay
• ✔️ Specifications, materials and layout changes
• ✔️ Termination rights if licences are delayed or refused

This is also where reservation agreements and early deposits must be carefully controlled. You can read more in our guide: Reservation Contracts in Spain – Are They Legally Binding?

Completion, Snagging and Final Checks

As construction nears completion, your lawyer’s role becomes just as important.

Final checks should include:

• ✔️ Confirmation of the First Occupation Licence
• ✔️ Verification that utilities can be legally connected
• ✔️ Review of snagging lists and defect rectification
• ✔️ Ensuring community statutes and fees are in place

We also ensure that the property delivered matches the contract specifications before advising completion at the notary.

Common Risks When Buying New Build Property in Spain

Some of the most common issues we encounter include:

• ❌ Paying deposits before licences are granted
• ❌ Missing or invalid bank guarantees
• ❌ Open-ended completion dates
• ❌ Developers changing specifications without consent
• ❌ Pressure to complete before documentation is ready

Many of these risks can be avoided with early legal involvement and properly drafted contracts.

How Platinum Legal Spain Supports New Build Buyers

We act exclusively in your interests, not the developer’s. Our new build service includes:

• ✔️ Full developer and land due diligence
• ✔️ Licence and planning verification
• ✔️ Bank guarantee confirmation
• ✔️ Contract review and negotiation
• ✔️ Power of Attorney for remote buyers
• ✔️ Notary coordination and post-completion registration

If you are buying remotely, we can act on your behalf under a tailored Power of Attorney.

For a full overview of the buying process, see our cornerstone guide: Spanish Property Law 2026 – Complete Guide.

📞 Spain: +34 868 480 646
📞 UK: +44 203 603 8635
📱 WhatsApp: +34 659 111 210
✉️ Email: info@platinumlegalspain.com

We’ll review your project and explain the safest way to move forward before you commit.