The module on the collection and the stock dealt with two DIFFERENT interests in one object, the owner's and the bailee's. This one deals with the same interest DIVIDED: several people own a work together, by joint acquisition, by an unpartitioned estate, or through a vehicle holding works for several investors. The difference looks subtle and is not, because the remedies differ.
The first point is arithmetical and follows from the principle already stated: insurable interest is a condition of validity, and here it divides in proportion. Each co-owner has an interest limited to their share, so a co-owner insuring the whole value insures beyond their interest, and the excess is not enforceable as insurance. A policy taken out by one for the whole is therefore not a generous policy: it is a policy a fraction of which is worth nothing, and that fraction is precisely the one belonging to the others.
Then comes a question of plumbing co-owners discover at settlement. A policy naming a single insured pays that insured. What they then owe the others arises from the co-ownership agreement or the shareholders' pact, not from the insurance contract, and an insurer that paid the person it was bound to pay has performed its obligation. If the co-owners are in dispute, one may therefore collect and not distribute, and the others have no recourse against the insurer. Insurance and ownership have two separate sets of pipes, and nothing joins them by default.
The most frequent and least noticed case is the unpartitioned estate. The policyholder has died; the heirs hold the interest; and the policy keeps naming a person who no longer exists, often for years, because the premium keeps being collected without anyone opening the contract. At the loss, the named insured has no legal existence and the holders of the interest are named nowhere. This is not a rare situation, it is the ordinary situation of a family collection, and it is repaired with one letter so long as no loss has occurred.
Disclosure is affected too, in a way that is not obvious. A policy issued in one person's name presupposes a place, a use, access arrangements. A work held in indivision between three heirs may circulate between three homes, hang at one then at another, and the risk described in the contract no longer matches the one that exists. This is not concealment, it is a silent drift, and it occurs without any of the co-owners feeling they changed anything.
Finally one must see that ownership can change without the object moving. A share is sold, and the mechanism seen in the sale module then operates in full: interest follows ownership, a policy covering property belonging to the insured stops covering the share transferred, and nothing visible has happened. No crate was opened, no carrier involved, the work still hangs on the same wall. On investment vehicles, where shares change hands regularly, that drift is continuous by construction.
In practice two actions suffice and they belong to the same family as every action in this certification. Name all co-owners as insureds, or name one of them expressly for the benefit of whom it may concern, and say which of the two was done. And reread the policy after the three events that change interest without touching the object: a death, a partition, a share transfer. Those are exactly the events no inventory detects, since they leave no trace in the room where the work hangs.
Three siblings inherit a collection in 2019, left in indivision. The policy, taken out by their father in 2011, was never amended: it names the father as sole insured and covers 'property belonging to the insured' at the family address. The works have since been divided in fact between the three homes, with no deed of partition. In 2025 a fire at the eldest sister's destroys four works for 620,000 euros of agreed value. She notifies the loss and claims settlement, stating she will pass two thirds to her siblings.
The file is more fragile than it looks, on three cumulative planes, and the first has nothing to do with indivision. The policy names as insured a person who died six years ago: the named insured has no legal existence, and the holders of the interest are named nowhere. That is the point to address before any other, and it could have been fixed with a letter at any time between 2019 and 2025. Next the address: the policy covers property at the family address, and the destroyed works were at the eldest sister's, which does not appear in it. A division in fact between three homes, with no deed, shows in no document, and that is exactly the silent drift this module describes: nobody felt they had changed anything. Finally interest: assuming the first two points are overcome, the eldest has an insurable interest only in her undivided third. Her undertaking to pass two thirds to her siblings arises from the indivision and not from the insurance contract, and creates no right for them against the insurer; had they fallen out, they would have had no recourse on that side. What this file teaches is not a legal subtlety but a calendar: the three events that change interest without touching the object, a death, a partition, a share transfer, are the ones no inventory detects, and they are the only ones to watch for.
- 01Insurable interest divides in proportion: a co-owner insuring the whole value insures beyond their interest, and the excess is worth nothing.
- 02A policy naming a single insured pays that insured; what they owe the others arises from the co-ownership and gives them no recourse against the insurer.
- 03An unpartitioned estate leaves a policy in a dead person's name for years, because premiums keep being collected and nobody opens the contract.
- 04A division in fact between several homes makes the described risk drift without any co-owner feeling they changed anything.
- 05A death, a partition and a share transfer change interest without touching the object: they are the events no inventory detects.