Legal requirements and steps to buy off-plan property in Spain

Legal requirements and steps to buy off-plan property in Spain

Strategic guide for the international buyer: legal framework for new-build property (LOE), roadmap from reservation to deeds, bank guarantees, developer documentation and tax for investors on the Costa Blanca and Costa Cálida.

New build Buying Costa Blanca Tax Foreign buyers
April 15, 2025 • By BalmaCasa

Legal Requirements and Steps to Buy Off-Plan Property in Spain

For the international investor, buying a new-build property in Spain —especially in high-demand areas such as the Costa Blanca and the Costa Cálida— goes beyond a simple real estate transaction; it is a strategic investment decision.


1. Introduction: The New-Build Paradigm in the Spanish Market

For the international investor, buying a new-build property in Spain —especially in high-demand areas such as the Costa Blanca and the Costa Cálida— goes beyond a simple real estate transaction; it is a strategic investment decision. This model balances the desire for technical customisation and energy efficiency with a robust legal framework that, although strong, requires expert navigation.

In legal terms, «new build» (obra nueva) in Spain is governed by the Ley de Ordenación de la Edificación (LOE – Building Regulation Act) and is defined as any building at project stage, under construction or recently completed that is transferred for the first time. Compared with the resale market, new build offers substantial advantages: flexibility in the payment schedule, state-of-the-art sustainability standards and construction guarantees backed by law. In this context, BalmaCasa positions itself as the strategic digital partner that turns bureaucratic complexity into a clear roadmap, removing information asymmetries for the foreign buyer.


2. The Acquisition Process Roadmap: From Reservation to Deeds

Off-plan purchase is structured around key milestones where each signature represents a transfer of rights and a consolidation of financial obligations. Understanding the timeline is essential to avoid operational risks.

  1. Reservation: The process starts with securing the property through an initial payment (typically €5,000). This document ensures the unit is taken off the market while compliance checks are carried out.
  2. Sale and Purchase Contract (Penitential Arras): This is the core legal milestone. Under Article 1,454 of the Spanish Civil Code, it requires payment of 10% of the total price plus VAT (minus any prior reservation). This contract allows withdrawal: if the buyer pulls out, they lose what they have paid; if the seller defaults, they must refund double that amount.
  3. Anti-Money Laundering (AML) and KYC: As a mandatory step before the notary, the foreign buyer must pass an AML audit (providing payslips or tax returns) and complete the Know Your Customer (KYC) form to prove the lawful origin of funds.
  4. Construction Phase: Staged payments follow (usually instalments adding a further 10% up to 20% before handover). These funds must be paid into a special developer account, separate from any other funds and used solely for the project.
  5. Courtesy Visit: Before signing at the notary, the buyer is entitled to a visit to check the condition of the property. It is important to distinguish this from the «snagging list», which is done formally after keys are handed over.

3. Safeguarding Advance Payments: Guarantees and Bank Bonds

Financial security in Spain is guaranteed by Law 38/1999 (LOE) and Law 20/2015. The developer must guarantee repayment of amounts paid plus statutory interest if the project does not start or is not completed within the agreed period.

  • Type of Guarantee: It may take the form of a surety bond or a joint bank guarantee. The buyer should always request the individual certificate identifying their property.
  • Scope and Expiry: The guarantee must cover 100% of advance payments plus VAT plus statutory interest. Critical note: According to the Banco de España, the guarantee lapses if two years pass from the developer’s breach without the buyer having formally demanded termination and refund.
  • Bank Liability: Supreme Court Judgment 733/2015 establishes a "special duty of supervision" for credit institutions. Even if the bank did not issue the individual guarantee, it may be liable if it allowed funds to be paid into the developer’s account without verifying that guarantees were in place.
  • Cancellation: The guarantee is only cancelled upon issue of the First Occupation Licence (LPO) and proof of effective handover of the property.

4. Administrative Requirements and Key Developer Documentation

Documentary transparency is the clearest indicator of a project’s solvency. Before signing the deeds, the strategic consultant should verify the following checklist:

  • Building Licence: Essential for the bank guarantee to be legally valid.
  • Final Works Certificate (CFO): Document certified by the Architects’ Association confirming that construction matches the project.
  • First Occupation Licence (LPO) or Responsible Declaration: Administrative confirmation of habitability. The Responsible Declaration is now the streamlined route that allows deeds to be granted and utilities to be contracted.
  • Decennial Insurance: Mandatory to register the completed building; it covers structural damage for 10 years.
  • Building Log and Geographic Reference Coordinates: Technical documentation that must be lodged with the Land Registry for correct legal identification of the property.

5. Legal Completion: Signing, Financing and Tax

The notarial act is when the transaction is legally perfected. For the international buyer, a NIE (Foreigners’ Identification Number) and a Spanish bank account are mandatory.

Transparency and Financing

Under the Mortgage Credit Act, if there is a mortgage, the buyer must attend the notary for mandatory free advice (transparency deed) at least one day before signing, after receiving the FEIN and FIAE. As regards financing, taking over the developer’s developer's loan can save valuation costs, although it requires acceptance by the credit institution (Art. 118 Mortgage Act).

Tax and Cost Comparison (New Build)

Cost / Tax Buyer Seller Notes
VAT (10%) Yes - Standard rate for new housing.
AJD (1.5%) Yes - Rate applied in Valencia and Murcia.
Notary and Registry Yes - According to official tariffs.
Valuation Yes* - *Saved if loan is taken over.
Municipal Capital Gains - Yes Tax on the increase in value of the land.
New Build / Horizontal Division - Yes Legal constitution costs for the building.
Prior Mortgage Cancellation - Yes The developer must deliver the property free of charges.

6. After Purchase: Community Life and LOE Guarantees

Handover of keys marks the start of life under the Horizontal Property regime. The buyer must register with the Community Administrator and contribute to the Reserve Fund, which by law may not be less than 5% of the ordinary budget.

It is essential to understand that LOE liability periods run from the signing of the Works Handover Certificate (between developer and builder), not from key handover to the client.

  • 1 Year: Defects in finishes and completion.
  • 3 Years: Defects affecting habitability and installations.
  • 10 Years: Structural defects (foundations, beams, load-bearing walls).

BalmaCasa supports the owner through this transition, with after-sales service to ensure any technical issue is resolved under these legal guarantees.


7. Conclusion: Security and Support with BalmaCasa

Buying new build in Spain is a highly regulated process, but its success depends on rigorous technical and legal oversight. BalmaCasa’s digital expertise and deep local knowledge turn what could be an administrative maze into a controlled, predictable investment experience.

Our approach as strategic consultants lets you focus on the value of your new property while we secure every step of the journey. We invite you to contact our team for a tailored review of assets on the Costa Blanca and Costa Cálida, ensuring a pressure-free process with full institutional security.