Parete di un appartamento con segni di infiltrazione d'acqua
diritto-immobiliare5 min read

You Buy a House and After Completion a Hidden Disaster Emerges. You Have More Rights Than You Think

If after the deed of sale hidden defects emerge — infiltrations, cracks, structural problems not visible during viewings — the law protects the buyer with an objective guarantee that doesn't require proving the seller's fault. Here's how to act, and how quickly.

⚡ In brief

Anyone who buys a house has the right to guarantee for hidden defects: hidden flaws that reduce the value or usability of the property and were not visible at the time of purchase. The buyer can choose between contract rescission and price reduction, without having to prove the seller's fault. However, you must prove that the defect exists, is serious, was already present before completion, and affects the use or value of the property.

The House Seemed Perfect. Then the Nightmare Began

It happens more often than one might think: you buy a property, do the pre-purchase inspections, everything seems fine. Then, weeks or months after the deed of sale, infiltrations appear, structural problems emerge, or you discover that the electrical system doesn't meet regulations and was never declared. What can you do?

Hidden Defects: What They Are and What the Law Says

A hidden defect is a flaw in the property that was not visible during normal pre-purchase viewings and that significantly reduces the value or usability of the house. Classic examples: infiltrations from the flat roof, structural problems imperceptible to the naked eye, non-compliant undeclared installations.

The Civil Code (Articles 1490-1495) provides an objective guarantee: the buyer is protected even without having to prove the seller's bad faith or negligence.

What You Need to Prove

  • The defect exists and is serious (not just superficial wear)
  • It was already present before the deed of sale
  • It was not visible during pre-purchase inspections
  • It significantly affects the use or value of the property

What You Can Demand

The law gives you two options:

  • Contract rescission: return of the price and mutual restitution of the property, for particularly serious defects
  • Price reduction: proportional to the loss of value caused by the defect

You can also claim additional compensation if you suffered further damages beyond the defect.

Crucial Deadlines: Act Immediately

You must report the defect within 8 days of discovery. The action prescribes in 1 year from delivery of the property. These deadlines are strict.

Not respecting them means losing the right to enforce the guarantee. At the first sign of a defect, document it immediately with dated photographs and, if possible, a technical survey. Then send written notice to the seller (registered letter or PEC) within 8 days of discovery. Finally, contact a property lawyer to assess the available remedies.

Frequently asked questions

Do you have a diritto-immobiliare issue?

Post your request on LexAsta and receive offers from verified lawyers within 48 hours. Free of charge.

Publish your case →