The purchase of a home is one of the most important investments we make in our lives. However, sometimes what seems to be the home of our dreams can hide unpleasant surprises: hidden defects. These defects, which are not visible at first glance during the property visit, can become a nightmare for the new owner. In this article, we will explain in detail what hidden defects are, how to detect them, and what actions you can take if you find yourself in this situation.

What are hidden defects?

Hidden defects are serious flaws that affect the habitability or functionality of a home and that are not detectable at first glance at the time of purchase. Unlike apparent defects, which are easily visible, hidden defects manifest over time and can generate significant repair costs.

Common types of hidden defects:

  • Dampness and leaks: Waterproofing problems, pipe leaks, or condensation can cause dampness and leaks that damage the structure of the home.
  • Structural problems: Cracks, fissures, or settling in the foundations can indicate serious structural problems that compromise the safety of the building.
  • Defective installations: Problems in the electrical, plumbing, or gas installations can pose risks of fire, flooding, or poisoning.
  • Termites and woodworm: The presence of these pests can damage the wood of the structure, floors, or furniture.
  • Insulation problems: Poor insulation can lead to heat or cold loss, increasing energy consumption and causing discomfort.


How to detect possible hidden defects?

  • Thorough inspection: Take time to examine every corner of the home, paying attention to possible signs of dampness, cracks, or irregularities.
  • Request plans and documentation: Review the plans of the home and the technical documentation to verify the quality of the materials and the correct execution of the works.
  • Consult with professionals: If you have doubts, do not hesitate to hire an architect, surveyor, or expert to conduct a technical inspection of the home.
  • Ask the neighbors: Neighbors may have valuable information about possible problems in the building or the area.


What to do if you discover a hidden defect?

  • Communicate with the seller: Inform the seller about the hidden defect and try to reach an agreement for repair or compensation.
  • Gather evidence: Document the hidden defect with photos, videos, and repair estimates.
  • Hire an expert: A specialized expert can prepare a technical report detailing the extent of the hidden defect and its repair cost.
  • Consult with a lawyer: If you cannot reach an agreement with the seller, a lawyer can advise you on the legal actions you can take.


The purchase of a home is an important decision that requires caution and diligence. Knowing about hidden defects and how to detect them will help you protect your investment and avoid unpleasant surprises. Do not hesitate to seek professional advice if you have doubts or need help.



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