Buying off-plan property: risks and protection of advance payments

Buying off-plan property: risks and protection of advance payments
Acquiring a property during the planning or construction stage is one of the most common ways to purchase a new-build home in Spain. The decision to buy off-plan property allows buyers to adapt the internal layout, select finishing materials, benefit from staggered payments throughout the build, and move into a home tailored to the latest energy efficiency regulations. However, by committing capital to an asset that does not yet physically exist, the buyer incurs a series of legal, financial, and planning risks that must be managed with complete rigour.
The history of Spain's real estate sector demonstrates that purchasing off-plan requires a thorough analysis of contractual guarantees and developer solvency. To protect the investment, Spanish legislation sets out specific mechanisms designed to secure advance payments made by buyers. Understanding in detail how these guarantees work, what documentation is required by law, and which contract clauses must be reviewed is essential for a secure transaction.
Main risks of buying off-plan property
Although purchasing future developments offers clear advantages, contingencies can affect both the delivery of the home and the security of the invested capital. Identifying these factors at an early stage helps to prevent them effectively.
1. Delays in delivery deadlines
Schedule delays are the most frequent issue when buying off-plan property. Delays can stem from administrative licensing issues, material shortages, adverse weather conditions, or shortages of construction staff. It is essential that the contract establishes a specific delivery date, avoiding ambiguous phrasing that leaves the final completion date solely to the developer's discretion.
2. Insolvency or insolvency proceedings of the developer
If the developer experiences severe financial difficulties before completion, the construction work risks being halted. In the worst-case scenario, insolvency proceedings without the corresponding bank guarantees can endanger the financial contributions made by buyers during the build.
3. Changes to the initial project and specifications schedule
At times, unexpected changes to the specifications schedule, floor area, or room layout are introduced during construction. Although certain technical modifications may be unavoidable due to site management requirements or local regulations, the developer cannot unilaterally alter substantial features of the home or substitute materials for lower-grade alternatives without the buyer's consent or appropriate financial compensation.
4. Lack of licences and planning issues
Building without the corresponding building licence or commencing sales without final project approval from the local council poses a serious risk. The subsequent absence of the First Occupation Licence (Licencia de Primera Ocupación - LPO) or certificate of occupancy will prevent utility connections (water, electricity, gas) and the signing of the title deed before a notary public.
Guarantees for advance payments: legal framework
To mitigate buyer vulnerability regarding developer contingencies, the Spanish legal framework mandates strict safeguards over funds paid prior to and during construction.
The regulation of advance payments historically traces back to Law 57/1968, the principles of which were integrated into the First Additional Provision of Law 38/1999, of 5 November, on Building Regulation (LOE), substantially amended by Law 20/2015. This legislation imposes precise obligations on real estate developers receiving advance funds:
- Special, segregated bank account: The developer is required to deposit advance payments made by buyers into a special bank account dedicated exclusively to construction expenses for the development. This account cannot be mixed with general corporate funds.
- Bank guarantee or surety bond: From the moment the developer receives the first advance payment and the building licence is obtained, it must guarantee the refund of these funds plus legal interest through an individual bank guarantee or a surety bond issued by an authorised insurance provider.
- Refund of payments upon breach of contract: If construction does not begin, is not completed within the agreed timeframe, or fails to secure the First Occupation Licence, the buyer has the legal right to terminate the contract and demand a full refund of all advance payments, plus legal interest.
It is vital to stress that guarantees must be individualised. It is not enough for the developer to claim to hold a global policy for the development; each buyer must receive an individual guarantee certificate or insurance policy in their name, detailing the exact sums contributed at each milestone of the payment schedule.
Comparison of guarantees for advance payments
Comparative framework of instruments required under Spanish legislation to cover advance payments in real estate developments.
| Criterion | Bank guarantee | Surety bond |
|---|---|---|
| Authorised issuer | Credit institution registered with the Banco de España | Insurance entity authorised to operate in the surety line of business |
| Execution of guarantee | Direct claim against the guarantor financial institution | Claim against the insurance entity issuing the policy |
| Regulatory framework | Law 38/1999 and credit institution regulations | Law 38/1999 and Law 50/1980 on Insurance Contracts |
Criterion
Authorised issuer
Bank guarantee
Credit institution registered with the Banco de España
Surety bond
Insurance entity authorised to operate in the surety line of business
Criterion
Execution of guarantee
Bank guarantee
Direct claim against the guarantor financial institution
Surety bond
Claim against the insurance entity issuing the policy
Criterion
Regulatory framework
Bank guarantee
Law 38/1999 and credit institution regulations
Surety bond
Law 38/1999 and Law 50/1980 on Insurance Contracts
Regulated under the First Additional Provision of Law 38/1999, of 5 November, on Building Regulation.
Fuente: BOE: Disposición adicional primera de la Ley 38/1999
Essential documentation before signing and paying a deposit
Before making any payments or signing a reservation agreement to buy off-plan property, it is essential to request and audit the following technical, administrative, and legal documentation:
- Proof of land ownership: Verify via a Nota Simple from the Land Registry that the plot earmarked for construction belongs to the developer and is free of encumbrances or charges incompatible with development.
- Municipal building licence: Document issued by the local council authorising the start of construction in accordance with the submitted project.
- Basic and execution project: Detailed architectural plans of the property (including measurements, net usable area, and gross built area) and common areas of the building or development.
- Signed specifications schedule: A detailed description of materials for structure, insulation, joinery, flooring, tiling, climate control, and sanitary fittings to be used in construction.
- Draft purchase contract and payment schedule: Draft document establishing the final price (itemising applicable VAT), advance payment dates, and the target completion date for construction.
- Bank guarantee document or surety bond policy: Certificate issued by the financial institution or insurer backing each contribution made.
Special consideration for Social Housing (VPO) in the Comunidad de Madrid
For homes subject to public protection schemes (VPO, VPPB, VPPL) within the Comunidad de Madrid, documentary verification involves additional requirements. The property's provisional classification order must be verified, along with the maximum sales price limits per usable square metre under regional Madrid regulations and the buyer's eligibility criteria. Furthermore, matters concerning legal disqualification periods (descalificación) or subsequent resales remain strictly subject to the regulatory framework applicable in the Comunidad de Madrid.
Analysis of contract clauses: key points to review
Private contracts drafted by developers often contain complex clauses. Conducting a thorough legal analysis to identify unfair or unbalanced terms that violate consumer protection legislation is imperative.
Key priority areas during contract review include the following:
Automatic extension clauses: Terms granting the developer indefinite extensions or relying on vague justifications must be avoided. Schedule extensions should only be permissible in cases of duly proven force majeure beyond the developer's control.
Withdrawal penalties: The contract must maintain balance regarding breach penalties. If severe penalties apply to a buyer delaying a payment, equivalent penalties must apply to a developer failing to meet construction deadlines.
Imposition of costs legally borne by the seller: Clauses passing the cost of Municipal Capital Gains Tax (Plusvalía Municipal - IIVTNU) or developer mortgage cancellation costs onto the buyer are null and void as unfair terms under Supreme Court case law.
Mortgage subrogation: The buyer is free to choose the lender for their mortgage loan. They cannot be forced to take over the developer's mortgage, nor can they face financial penalties for choosing a different financial institution.
Professional guidance for a safe off-plan purchase
The legal, technical, and financial process of acquiring future real estate requires multidisciplinary oversight to safeguard the buyer's interests effectively. Engaging specialist professional advice enables an audit of the project status, verification of developer legal standing, and assurance that bank guarantees cover all advance payments in full.
At Sky Real Estate, we assist our clients throughout every step of the acquisition process. Our structure is backed by legal support from recognised firms in the sector, such as Sky Law, winner at the European Legal Awards (2023-2025), and registration in the mortgage credit intermediaries register of the Banco de España (ICI D-286), ensuring the highest standard of rigour and regulatory compliance.
If you are considering buying off-plan property and want the peace of mind of independent expert advice focused exclusively on your technical and contractual interests, we invite you to explore our personal property shopper (PSI) service, where we will guide you through every stage of the project with complete transparency and legal security.
Frequently asked questions
What does the law require to safeguard advance payments when buying off-plan?
Fuente: BOE, Disposición adicional primera de la Ley 38/1999, de 5 de noviembre
What rights does the buyer have if construction does not start or is not delivered on time?
Fuente: BOE, Disposición adicional primera, apartado uno.2 de la Ley 38/1999, de 5 de noviembre
Is it legal to pass the payment of Municipal Capital Gains Tax onto the buyer of a new-build home?
Fuente: BOE, art. 89.3 del Real Decreto Legislativo 1/2007, de 16 de noviembre