Contractor Liability for Retaining Wall Collapse Despite Owner Supervision

A property owner sought to hold a contractor liable for damages resulting from the collapse of a retaining wall, alleging faulty construction that did not meet the requisite professional standards, even though the owner had supervised the work and made minor modifications. The court ruled that the professional obligation of the contractor includes ensuring the stability and durability of the structure according to technical standards, and this obligation is not negated by the owner's supervision or minor, non-structural alterations, leading to the cassation of the lower court's decision which had absolved the contractor.