Building Defects in Spain: How to Claim Against the Builder

🇪🇸 Read the original in Spanish

Buying a property or undertaking a major renovation is, for the vast majority of citizens and foreign residents in Spain, the largest investment of their lives. However, the excitement of moving into a new home can quickly turn to frustration when dampness, wall cracks, system failures, or defective finishes appear. Faced with this situation, the Spanish legal system offers robust tools to protect property owners, although the success of any claim depends on acting quickly, with technical rigor, and with full knowledge of the legal deadlines.

The Legal Framework: Who is Liable and Under Which Laws?

To successfully claim for construction defects in Spain, we must look at a dual regulatory framework. Depending on whether it is a new build (complete construction) or a subsequent renovation, we will apply one legislation or another.

1. The Ley de Ordenación de la Edificación (LOE) - Law 38/1999

For buildings whose building permit (licencia de edificación) was applied for after May 6, 2000, the Ley 38/1999, de 5 de noviembre, de Ordenación de la Edificación (LOE) (Building Regulation Act) is the governing law. This law defines the responsibilities of the various building agents (developer, builder, designer, construction director, and execution director).

Article 17 of the LOE establishes joint and several civil liability (responsabilidad civil de carácter solidario) when the specific cause of the damage cannot be individualized to a single party. This means that if there are doubts about whether the fault lies with the architect or the builder, the owner can sue both jointly.

2. The Civil Code: Liability for Hidden Defects and Breach of Contract

When the LOE is not applicable (for example, in home renovations that do not alter the architectural configuration of the building) or when its deadlines have expired, the Código Civil (Civil Code) offers two fundamental pathways:

• *Article 1484 of the Civil Code (Saneamiento por vicios ocultos / Liability for hidden defects):* The seller is obliged to remedy any hidden defects in the item sold if they make it unfit for its intended use, or if they diminish this use to such an extent that, had the buyer known about them, they would not have acquired it or would have paid a lower price.
• Article 1124 and Article 1101 of the Civil Code (Breach of Contract): If the builder performs defective work that constitutes a serious breach of what was agreed in the contract (delivery of something substantially different from what was agreed, known as "aliud pro alio"), the owner can demand specific performance (repair) or the termination of the contract, in both cases with compensation for damages.

3. The Ley de Enjuiciamiento Civil (LEC) - Law 1/2000

The Ley 1/2000, de 7 de enero, de Enjuiciamiento Civil (LEC) (Civil Procedure Act) governs the entire judicial process. It is vital for submitting expert evidence (Article 335 and following of the LEC), which is the fundamental pillar upon which these claims rest in Spanish courts.

Legal Deadlines to Claim: The Clock is Ticking Against You

One of the biggest mistakes property owners make is confusing the warranty periods (during which the damage must appear) with the limitation periods (the time you have to file a lawsuit from the moment the damage appears).

The Three LOE Warranty Periods (Article 17)

The LOE establishes three different warranty periods depending on the severity of the defects, counting from the date the work is accepted without reservations by the developer (recepción de la obra):

• 10-Year Period (Structural Defects): Covers material damage caused to the building by vices or defects affecting the foundation, supports, beams, slabs, load-bearing walls, or other structural elements, which directly compromise the mechanical resistance and stability of the building.
• 3-Year Period (Habitability Defects): Covers material damage caused by vices or defects in construction elements or installations that result in a failure to meet habitability requirements (dampness, poor acoustic or thermal insulation, pipe failures, etc.).
• 1-Year Period (Finishing Defects): Covers material damage due to execution vices or defects affecting the finishing elements of the work (badly applied paint, loose tiles, doors that do not fit, etc.). The builder (constructor) is exclusively liable for this period.

The Limitation Period to File a Lawsuit

Once the defect appears within its corresponding warranty period (1, 3, or 10 years), the owner has a limitation period of 2 years to initiate legal action, in accordance with Article 18 of the LOE. This 2-year period begins to run from the day the damage occurs.

> Attention! This 2-year limitation period (plazo de prescripción) can be formally interrupted (for example, by sending a burofax—a registered fax with certified content), which resets the 2-year clock back to zero.

Deadlines Under the Civil Code

• For hidden defects under Article 1484 of the Civil Code, the deadline to claim is extremely short: only 6 months from the delivery of the sold item (Article 1490 of the Civil Code).
• For contract termination or damage claims due to breach (Articles 1101 and 1124), the general limitation period is 5 years (Article 1964.2 of the Civil Code).

Step-by-Step Practical Steps to Claim Against the Builder

If you detect defects in your property, you must follow a strict protocol to ensure your claim is legally viable. It is not enough to call the builder on the phone; you must leave a paper trail at every step.

Step 1: Identification and Photographic Documentation

As soon as you detect the problem, take high-quality photographs and videos. Do not attempt to repair the damage yourself immediately (except in extreme emergencies threatening safety), as you could destroy the evidence of the original defect.

Step 2: Commissioning an Expert Technical Report

This is the most crucial step. A judge is neither an architect nor an engineer; they will decide the case based on technical evidence. You must hire an independent expert (an architect, technical architect, or engineer, depending on the type of damage) to draft an expert opinion (dictamen pericial). This report must detail:

1. The precise description of the damages.
2. The technical cause of the defect (design error, poor execution by the builder, defective materials).
3. The technical solution required to repair it.
4. The detailed budget for the repair works.

Step 3: Formal Out-of-Court Claim (Burofax)

Send a burofax with acknowledgment of receipt and certification of content to the builder (and the developer, if applicable). In this document, you must:

• Clearly describe the detected defects.
• Attach or refer to the expert report.
• Give a reasonable deadline (usually between 15 and 30 days) for them to proceed with the repair or propose a solution.
• Warn them that, failing this, legal action will be initiated.

The burofax is vital because it interrupts the 2-year LOE limitation period and serves as proof in court that you attempted to resolve the issue amicably.

Step 4: Attempted Mediation or Conciliation Act (Optional)

If the builder responds but shows disagreement, you can attempt a conciliation act (acto de conciliación) in the Peace Court (Juzgado de Paz) or Court of First Instance (Juzgado de Primera Instancia), or go to private mediation. If there is a willingness to agree, a settlement contract (contrato de transacción) can be signed to avoid court.

Step 5: Filing the Lawsuit

If the builder ignores the burofax or refuses to repair, the last resort is civil court. You will mandatorily need the assistance of a lawyer (abogado) and a court procurator (procurador) if the claim amount exceeds 2,000 €. In court, the expert report and the expert who drafted it will be the key elements to secure a favorable ruling.

Concrete Examples of Claims and Costs

To understand how these claims work in practice, we will analyze two common scenarios with real figures.

Example 1: Rising Damp in a New-Build Villa

• Situation: Carlos buys a new-build villa in Alicante for 280,000 €. After 18 months of living there (well within the 3-year LOE habitability warranty period), severe rising damp begins to appear on the living room walls, damaging the paint and furniture.
• Action: Carlos hires a surveyor (aparejador) to draft an expert report. The report determines that the builder did not correctly install the damp-proof membrane in the foundations. The cost of the repair is budgeted at 14,000 €. The expert charges 1,200 € for his report.
• Result: After sending a burofax that the builder ignores, Carlos files a lawsuit under Article 17 of the LOE. The judge holds the builder and developer jointly and severally liable, ordering them to pay the 14,000 € for the repair, the 1,200 € for the expert, and the court costs (Carlos's lawyer and procurator fees), as the claim was fully upheld.

Example 2: Defective Kitchen Renovation

• Situation: Pierre, a French resident in Málaga, contracts a complete kitchen renovation for 12,000 €. 2 months after the work is completed, the ceramic floor tiles begin to lift because the adhesive used was inadequate, and the new pipes leak, damaging the kitchen cabinets.
• Action: Since this is a renovation (not a new build), the LOE does not apply directly. Instead, the Civil Code applies for breach of contract (Articles 1101 and 1124). Pierre hires an expert who values the floor and plumbing repairs at 4,500 €.
• Result: Pierre sends a burofax demanding the repair. The builder refuses. Pierre files a verbal trial (juicio verbal) lawsuit (as the amount is under 6,000 €). The judge orders the builder to pay the 4,500 € needed to rectify the defective renovation plus legal interest.

Mistakes You Must Avoid

• Letting time pass without interrupting deadlines: Thinking that because the structural warranty period is 10 years, you can claim at any time. If the damage appears in year 9, you only have 2 years from its appearance to sue. If you let those 2 years pass without sending a burofax, the right to claim will have expired.
• Not having a high-quality expert report: Attempting to claim in court relying solely on mobile phone photos or a quote from another renovation company. Without an expert opinion signed by a registered professional, the lawsuit will almost certainly be dismissed.
• Repairing the damage before it is seen by the expert or before judicial evidence is secured: If you repair the defects on your own before they are properly certified by an expert or before requesting a pre-trial preservation of evidence (aseguramiento de la prueba) in court, you will lose the proof of damage, and the builder will argue the defects never existed.
• Claiming only verbally or via WhatsApp: Text messages or phone calls do not hold the same evidentiary weight, nor do they interrupt limitation periods in the same formal way as a burofax with certified content and acknowledgment of receipt.

Frequently Asked Questions (FAQ)

What happens if the builder has gone bankrupt or disappeared?

If the building company has declared bankruptcy (concurso de acreedores) or dissolved, the LOE protects the buyer through the figure of the Developer (Promotor), who is jointly and severally liable with the builder in most cases. Furthermore, for structural defects (10-year warranty), the law mandatorily requires a ten-year insurance policy (seguro decenal). If the builder no longer exists, you can direct your claim directly against the insurance company that issued the building's seguro decenal.

Can I claim if I bought the property second-hand?

Yes. The LOE warranty periods (1, 3, and 10 years) are transferred with the property. If you buy an apartment that is 4 years old and serious dampness appears (the 3-year habitability warranty has expired, but the 10-year structural warranty is still active), you can claim against the original developer or builder, provided you are within the corresponding deadlines from when the building was first delivered. If the LOE deadlines have already expired, you have 6 months to claim against the private seller for hidden defects under the Civil Code.

Who pays the costs of a lawsuit for construction defects?

In the Spanish judicial system, the principle of objective defeat (vencimiento objetivo) applies. If the judge fully upholds your lawsuit (meaning they agree with everything you requested), the losing party (the builder) will be ordered to pay the court costs (costas del juicio). This includes your lawyer's fees, your procurator's fees, and the expenses of the expert report, within the established legal limits.

What is the difference between an aesthetic defect and a habitability defect?

The difference lies in the severity and the applicable warranty period. An aesthetic defect (for example, a poorly glued skirting board or a scratch on the parquet flooring) is a finishing defect and has a 1-year warranty. A habitability defect (for example, failures in thermal insulation causing condensation and mold, or a lack of water pressure) affects the health, safety, and comfort of the inhabitants, and carries a 3-year warranty.

In Summary

• Identify the type of defect: Structural (10-year warranty), habitability (3-year warranty), or finishing (1-year warranty).
• Watch the limitation period: You have exactly 2 years from the moment the damage appears to file a lawsuit, a period you must interrupt by sending a burofax.
• Evidence is key: Never initiate a formal claim without a detailed expert report drafted by an architect, surveyor, or engineer.
• Always claim in writing with proof of delivery: Use a burofax with acknowledgment of receipt and certification of content to prevent deadlines from expiring.
• Joint and several liability: If it is unclear who is at fault, the law allows you to jointly sue the developer, builder, and technical directors.

General legal information, not personalised legal advice. For your specific situation, ask your question for free at AbogadoAI — answers grounded in Spanish law (BOE), in English.

This is general information, not legal advice. Verify on the BOE or consult a lawyer for your specific case.