Water leak in Luxembourg: who pays?

In short

• House you own and live in: you pay for the repair; your home insurance generally covers water damage and often leak detection costs.
• Rented home: minor maintenance repairs are in principle the tenant’s responsibility, repairs to the pipes and installation the landlord’s, unless the tenant is at fault or failed to maintain.
• Co-ownership building (copropriété): a leak on a common part is the responsibility of the co-owners, represented by the syndic; a leak on a private part is the responsibility of the co-owner concerned.
• Leak coming from a neighbour: your damage is generally covered by your own insurer, which may then claim against the party responsible.
• Leak before the water meter: generally the public network (commune or water syndicate); after the meter, the owner.
• New or recent home: the leak may fall under the developer’s or contractors’ warranties.

In every case, it is the precise location of the leak that tells you which situation applies.

Why it all depends on where the leak is

The same stain on a ceiling may come from a private pipe, a common riser in the building, the neighbour's shower, the roof or sewer backflow. Each of these sources points to a different responsible party and a different insurance policy. Until the source is established, everyone can pass the cost on to someone else, and the claim stays stuck.

That is why a leak detection report that pinpoints the source, with photos and measurements, is often the first document insurers ask for.

You own your house

Repairing the installation (pipe, fitting, heating, drain) is your responsibility: it is your property. Damage caused by the water (ceilings, walls, floors, furniture) is generally covered by your home insurance as water damage, according to your policy terms.

Many policies also cover leak detection costs when a leak has caused water damage, often up to a limit. They less often cover repairing the pipe itself, and rarely the lost water.

You are a tenant, or a landlord

The principle: the tenant handles routine maintenance and minor repairs (seals, flexible hoses, taps, clearing traps), the landlord the more significant repairs to the installation (concealed pipes, heating, drains). A leak on a concealed pipe is therefore generally the landlord’s responsibility, unless it results from the tenant’s fault or lack of maintenance.

The tenant must notify the landlord promptly: letting a leak get worse without saying anything can make the tenant liable. Leases often require the tenant to hold tenant's liability insurance; it may cover the tenant's belongings and liability. The landlord's insurance generally covers the building.

Who orders the leak detection? The tenant, the landlord or the syndic can. The simplest approach is to agree beforehand: the report, which pinpoints the source of the leak, is then used to share the costs.

You live in a co-ownership building

The co-ownership rules distinguish private parts, belonging to each co-owner, from common parts, belonging to everyone. As a general rule, water and drainage risers, the roof and the façade are common parts, while pipes serving a single flat, after its stop valve, are private. But it is your building’s rules that set the boundary.

A leak on a common part is paid for by the co-owners: notify the syndic, who involves the building's insurance. A leak on a private part is the responsibility of the co-owner concerned and their insurance.

The water is coming from the neighbour's

Report the claim to your own insurer: it is generally your insurer that compensates you under your policy, then claims, where appropriate, against the party responsible or their insurer. Also notify the neighbour and, in a co-ownership building, the syndic.

To locate the leak, access will be needed to the flat it comes from. If the neighbour disputes it, the leak detection report establishes the facts.

Before or after the meter

As a general rule, the connection up to the meter is part of the public network (commune or water syndicate), and everything after the meter is the owner's responsibility. The exact boundary and the rules on costs are set by your commune’s regulations: ask its water department.

For a hidden leak after the meter, some communes grant a reduction on the water bill once the leak has been located and repaired. See our page on high water consumption.

New or recently renovated home

If the home is recent, the leak may fall under the warranties owed by the developer or the contractors who built or renovated it: two-year or ten-year warranty depending on the element concerned. Notify them in writing, and have the source of the leak documented before it is repaired, so the evidence is not lost.

Water ingress and sewer backflow

Water ingress through the roof, a terrace or the façade is generally the responsibility of the building owner or, in a co-ownership building, of the co-owners. Sewer backflow may fall to the public network or the private installation, depending on where it originates. Insurance policies treat these cases very differently, and some exclude them: check your terms.

If you don't agree with the settlement

If your insurer's adjuster's assessment seems too low, or the cause they identified seems wrong, you can appoint your own adjuster. This independent assessment is provided for in most policies.