Bed bugs, cockroaches, rodents: who treats and who pays in a condo

A flat treated on its own is reinfested within three months. That is the only thing to grasp before arguing about who pays.

An owner reports bed bugs. They pay to have their flat treated, several hundred euros. Three months later the bugs are back, and two neighbouring flats are affected. Nobody lied and nobody did it badly: the treatment was doomed from the start.

Pests do not recognise the line between private and common areas. They travel through service ducts, refuse chutes, suspended ceilings and partitions. A building is treated as a whole, or not at all.

The sharing rule

The principle is easy to state: each owner maintains their private areas, and the association answers for the sanitation of the common areas. All the difficulty lies in knowing which side the infestation sits on.

• An infestation confined to one flat, unrelated to the common areas: treatment falls to its occupant or owner.
• An infestation reaching several units, the service ducts or the common areas: it falls to the association, through the manager.
• A colony established in a common room — cellars, bin store, boiler room, loft: the association, without discussion.
• Pigeons nesting on the façade or roof: those are common areas, so the association.

The boundary is the same as everywhere else, detailed in private works and common areas. The difference here is that waiting for the question to be settled mechanically makes the problem worse.

Why isolated treatment fails

Bed bugs move between flats through skirting boards, sockets and ducts. Treating one flat while the neighbour does nothing displaces the infestation, then watches it return. Cockroaches follow the pipework and concentrate in stacked kitchens and bathrooms.

Effective treatment therefore requires a building-wide assessment: adjacent flats, flats above and below, the common areas crossed. A serious contractor will propose it unprompted.

What the board can do, quickly

• Log every report with the date, floor and flat — that is what reveals a collective source.
• Alert the manager in writing from the second report in the same building.
• Ask for a building-wide assessment before pricing any treatment.
• Compare quotes at identical scope: number of visits, method, results guarantee.
• Organise information for occupants, tenants included, on how to prepare for the visit.

The first point is decisive: without a log every case looks isolated. See keeping an incident log and tracking an issue end to end.

The factor that blocks everything: shame

Bed bugs have one feature no other pest shares: occupants do not talk about them. They treat alone, silently, sometimes for a year, while the infestation spreads through the building. By the time it reaches a meeting, several floors are affected.

A board that writes once, factually, that the subject exists, that it has nothing to do with cleanliness and that reports can be anonymous, often unblocks the situation. It is a direct use of board communication.

What belongs to prevention

Some work is periodic and budgeted: rodent control in basements and bin stores, protecting access points, checking water points. Other work is routine upkeep: a clean, closed bin store solves half the problem.

These fold into managing the bin store and the annual walk-through.

Treating one flat while the neighbour waits does not cost half the price: it costs double, twice.

Centralise reports with CoproHarmony

CoproHarmony lets residents report an infestation with photos and a date, and lets the board see immediately whether several flats are involved. Create your free space.