Handling a water leak in common areas

Urgency and article 1135 of the Civil Code

Article 1135, fourth paragraph, of the Italian Civil Code allows the property manager to take urgent protective measures without waiting for assembly approval, whenever delay would cause damage to the building. An active leak affecting shared systems, the common riser pipe, the condominium sewage network or the roof clearly falls under this rule: waiting for the next ordinary assembly would let infiltration, mould and structural damage worsen.

The manager must still report to the assembly at the first following meeting, explaining the decision and presenting the supporting documents. A dated written record of the urgent intervention, with photos and quotes, is the best protection if the necessity or the amount of the expense is later disputed.

First response: containing the damage and identifying the cause

The first step is always containment: shutting the main valve if needed, cordoning off the affected area, notifying the residents involved and calling the emergency contractor already under agreement with the building, if one exists. Only once the leak is stopped should the cause be investigated.

It is essential to establish immediately whether the fault lies in a common part, riser pipes, horizontal networks below the first floor slab, roof terraces under article 1126, centralized systems, or in a private branch inside a single unit. Both liability and cost allocation depend on this distinction, so it is worth obtaining a written technical report that precisely locates the break.

Civil liability: the building, an individual owner, or third parties

If the leak originates in a common part, liability for damage caused to private units falls on the building under article 2051 of the Civil Code, custodian liability, with the cost then apportioned among owners according to their shares. If instead the leak originates in a private system and spreads to common areas or other units, the owner of the unit where it originated is liable.

In borderline cases, typical of riser pipes running through several properties, the manager should avoid anticipating a liability judgment before the technical survey is complete: owners involved are told that an investigation is underway and the final allocation will follow the survey's outcome, avoiding disputes over a preliminary split that is later corrected.

Building insurance and filing the claim

If the building carries a comprehensive property insurance policy, the claim must be filed within the contractual deadline, typically a few days from becoming aware of the event: delaying the notification risks compromising the payout. Photographic evidence of the site before any repair, quotes and the technical report are what the insurance surveyor will request.

The manager keeps both the insurer and the affected owners informed on the claim's progress, communicating expected survey and settlement timelines so that individual owners do not contact the insurer separately in an uncoordinated way.

Allocating the cost among owners

Cost allocation depends on the nature of the affected asset. Repairs to riser pipes and shared networks are split according to the general ownership shares under article 1123; repairs to roof terraces used exclusively by one owner, when the infiltration damages the floors below, follow article 1126, with one third charged to the exclusive owner or user and the remaining two thirds split among the owners who benefit from the roof as cover, in proportion to their shares.

If the intervention concerns a system serving only a group of owners, for instance a single staircase or a single building within a larger complex of buildings, the actual benefit criterion applies and the cost falls only on those who benefit, not on the whole ownership.

Frequently asked questions