What to do with things you are storing for someone else
There is a category of possession in most homes that belongs to nobody currently living there. A friend's boxes from a move between flats. A sibling's furniture from a year abroad. An ex-partner's things nobody has raised. They occupy real space, you cannot make decisions about them, and the longer they sit the harder it becomes to bring up — which is the actual mechanism keeping them there.
The problem is ambiguity, not the boxes
Almost all discomfort here comes from an arrangement that was never specified. Somebody said "just for a couple of months" during a stressful week, both people meant it, and no end date was ever attached. Four years later there is no agreement to point to, so raising it feels like introducing a demand rather than referring to a plan.
This is worth naming because it changes what the conversation is. You are not asking someone to take their things back as a favour; you are closing a gap that was left open by accident, and in most cases the other person has been vaguely aware of it and equally unsure how to raise it. Storage arrangements that go unmentioned for years are usually awkward on both sides, not just yours.
It also means the fix is specific rather than emotional. A date is what was missing. A date is what resolves it.
Find out what is actually in there first
Before any conversation, it helps to know what you are storing, because "your boxes" is much harder to discuss than "the two boxes of books and the lamp".
This is not about going through someone's private belongings. It is about being able to describe the volume and the general contents, which changes the conversation from a vague complaint into a concrete question. Many of these situations resolve immediately at this point, because the owner had assumed it was one box, or had forgotten what was in it and would happily let most of it go.
Photographs do this job better than a description, and they do a second one: if the person cannot collect for months, a set of photographs lets them make decisions remotely rather than needing to be in your hallway to do it. Kept works well for this because it holds an item with a photo, a room and a note about whose it is — items sort by who they belong to, so someone else's things can sit in your record as clearly theirs rather than blurring into your own inventory.
The conversation, in its short form
The version that works is specific, dated, and does not litigate the past.
Say what you have, not what you have put up with. "I have got your two boxes and the lamp in the spare room" opens a practical conversation. "These have been here for four years" opens a defensive one, and defensiveness is what makes people stall.
Give a date rather than an urgency. A specific month is easier to act on than "soon", and much easier than "whenever you can", which has already been tried and produced four years. Enough notice to be reasonable, definite enough to be a plan.
Offer the alternatives. Most people are stuck on logistics rather than on wanting the things. Would they like you to photograph the contents so they can decide remotely? Are they happy for you to donate what they do not want? Would they rather it went into a storage unit at their cost? Naming the options makes it a solvable problem instead of an obligation to travel.
Be clear about what happens after the date. Not as a threat, but as information — that after a certain point you will donate what has not been collected, and that you will photograph anything before it goes. Stated in advance, kindly, this is fair. Done without warning, it is not.
The special cases
Family things, where the owner has died. These are not really a storage problem and should not be handled as one. What people are protecting is usually not the object but the fear of forgetting it existed. Photographing something and writing one line — what it was, whose it was, where it went — answers that fear, and it is what makes letting the physical object go possible.
An ex-partner's belongings. The awkwardness is about contact rather than about the items. One message with a date, and a stated intention to donate afterwards, resolves it more cleanly than waiting for a natural moment, which does not come.
Things you are storing that were never asked about. Parents keeping a grown child's belongings, or the reverse, often becomes a standing arrangement nobody chose. This is worth raising as a joint decision rather than a complaint, because usually both sides have opinions and neither has said them.
What resolution looks like
Not necessarily an empty spare room. It might be an agreement that the boxes stay, which is a completely legitimate outcome and feels entirely different from the same boxes sitting there unmentioned. The thing worth ending is not the storage. It is the vagueness — the state where space is occupied by an arrangement nobody has confirmed and both people are slightly uncomfortable about.