Damage From Common Pipes: Who Answers and Who Pays

When a leak arises from a common pipe, such as a vertical drain riser serving several apartments, the condominium answers for the damage as custodian of that common part under Article 2051 of the Italian Civil Code. Pipes serving the owners generally fall among the common parts listed by Article 1117. The decisive point is distinguishing the common stretch from the private one, because liability and cost-sharing depend on it.

Which pipes are common

Article 1117 includes among the common parts the works, installations and artifacts intended for common use, including pipes serving several units. Generally the vertical drain and supply risers that cross the building and serve the owners or a plurality of them are common. The horizontal branches that, splitting off from the common riser, serve a single apartment are instead private.

This distinction is not always clear-cut and may require a technical assessment. The guiding criterion is functional: if the pipe serves several units it is common, if it serves only one apartment it is private, unless the title or the contractual regulation indicates otherwise.

The condominium's liability as custodian

Over the common pipes the condominium exercises custody and answers strictly under Article 2051. The injured party only has to prove that the leak comes from the common riser and that it produced the damage, while the condominium, to free itself, must prove a fortuitous event. Liability exists even if the condominium was unaware of the fault, because custody implies a duty of control and maintenance.

• The leak must come from a pipe qualifiable as common
• The injured party proves the link between the common riser and the damage
• The condominium answers save proof of a fortuitous event
• Awareness of the fault does not exclude liability
• Compensation and repairs are shared among the owners

How the costs are shared

The costs of repairing the common pipes and the resulting compensation are shared among the owners under the criteria of Article 1123 of the Italian Civil Code. If the pipe serves everyone uniformly, the cost is split in proportion to the thousandths (millesimi) of ownership. If it serves groups of owners to different extents, the criterion of use applies, placing the cost on those who draw benefit from the part concerned.

When the fault is due to the conduct of a single owner, for example through improper use of the riser or an abusive intervention, the condominium compensates the injured third party but can then seek recourse against the liable party for the share attributable to them, under the principle of Article 2055.

The role of the whole-building policy

The whole-building policy usually covers damage from breakage of the common pipes and often includes leak search, that is the works needed to identify the point of the leak. Promptly opening the claim on the correct guarantee helps ease the common fund. The deductible and the excess remain with the condominium, to be shared among the owners save recourse against a possible liable party.

Preventive maintenance

Much pipe damage is prevented with scheduled maintenance. Periodic checks of the risers, video inspections at critical points and prompt action on early leaks reduce the risk of floods and disputes. It falls among the manager's tasks, under Article 1130 of the Italian Civil Code, to see to the ordinary maintenance of the common parts and arrange the necessary conservative acts.

Handling maintenance, claims and cost-sharing

Distinguishing common and private stretches, scheduling maintenance and correctly sharing costs and compensation requires precise data on systems, units and thousandths. With AmministraPro the manager tracks pipe maintenance, links claims to units and calculates the shares under the legal criteria, with documentation always available. The features are described on the /funzioni page and the plans on the /prezzi page.