Why that summer student room on Facebook is often illegal onderhuur

Every summer I see the same assumption: a student is away for July and August, they post their room in a Facebook group, someone takes it over for a few weeks, everyone wins.

That sounds harmless. In the Netherlands, it often isn’t.

The legal problem is simple. Subletting a room is only allowed if the main tenant has explicit written permission from the landlord or housing corporation. Without that approval, the deal is unauthorized onderhuur. That applies in social housing and in the private market too.

A lot of internationals focus on the obvious risk: sending a deposit for a fake room. That risk is real, especially on Facebook. But the more painful version is moving into a room that does exist, paying real money for it, and then finding out you can’t register, can’t get a BSN, can’t open a Dutch bank account, and can be pushed out fast because the hoofdverhuurder never approved anything.

That is why I think “it’s fine, it’s only a summer sublet” is some of the worst housing advice in Dutch student cities.

Most Facebook sublets are arranged informally. A few DMs. Maybe a video call. Maybe some WhatsApp screenshots. Usually no landlord involved.

That is the problem.

Dutch subletting rules are not vague here. If the main tenant wants to sublet, they need written permission from the landlord. A proper written sublet agreement matters too: names, rent, deposit, duration, responsibilities. If those basics are missing, both sides are exposed.

This is especially relevant in student housing. For social housing providers like SSH or DUWO, subletting is only allowed with written consent, and the rent has to stay aligned with the official contract. University-managed rooms almost always prohibit subletting altogether.

In the private market, the contract often bans subletting as well. If the lease says no, or the landlord never approved it, the main tenant is in breach. If the landlord finds out, that can lead to termination of the tenancy and legal action.

So when a room appears in a Facebook group for Amsterdam, Utrecht or Leiden with a line like “sublet for summer, registration maybe possible, landlord not involved,” that is not a small technicality. That is the whole legal issue.

This is the part too many students learn too late.

If you live in the Netherlands, you usually need to register at your address in the BRP. For many internationals, that registration is what unlocks the rest of life here: getting a BSN, opening a Dutch bank account, arranging practical administration, and in some cases accessing huurtoeslag.

A huge share of informal sublets fall apart right here. Many landlords do not allow a subtenant to register. Anti-kraak agencies prohibit it. And if the main tenant is subletting without approval, they often avoid registration on purpose because it would expose the arrangement.

So you can end up in a very real room in Rotterdam, Den Haag or Groningen, paying real rent to a real student, while being unable to register legally at the address.

That is not a side issue. It means the room may be unusable for the reason you came in the first place.

People talk about “I found a cheap summer room on Facebook.” I think the better question is: can you actually live there on paper? If the answer is no, the deal is broken even before you discuss the deposit.

This is the part many subtenants get backwards.

They assume that once money is paid and keys are handed over, they have some normal tenant protection. In an illegal sublet, that confidence is misplaced.

The research is blunt on this: subtenants in illegal sublets have very little protection under Dutch tenancy law. If things go wrong, they can be removed without meaningful notice, and their options are weak because the core arrangement was never authorized.

Meanwhile, the main tenant stays responsible to the landlord for the rent, damages and any consequences of the illegal sublet. In social housing, the penalties can be severe. Illegal sublets can lead to blacklisting from social housing and fines that go as high as €20,750 per incident.

There is another ugly detail. Illegal sublets are often priced far above regulated rooms. Bond Precaire Woonvormen reports that illegal sublets can be 2 to 3 times more expensive than regulated housing. So the subtenant is not just under-protected. They are often overpaying for the privilege.

That is why I don’t like the framing of summer sublets as a clever workaround for kamernood. A workaround that leaves one person exposed to eviction and the other person with almost no housing rights is not clever.

The Dutch student housing shortage is bad enough on its own. In major cities, waiting times for student accommodation can run beyond two years, and legal room listings attract intense competition. Kamernet listings can get more than 50 responses within hours.

That desperation is exactly why Facebook works so well for illegal sublets and scams.

The platform is informal, fast and weak on verification. That creates two different problems at once. First, real tenants offer rooms they are not allowed to sublet. Second, outright scammers post phantom rooms, steal identities or collect deposits for places that do not exist.

The red flags are familiar: no in-person viewing before payment, pressure to transfer a deposit quickly, weird payment methods like Western Union, a rent that looks far below the local market, or a refusal to share landlord details or a written contract.

But even when the room is real, the listing can still be a bad deal. In fact, that is the point I want people to remember. “Not a scam” does not mean “safe.” A perfectly real student room in Delft or Eindhoven can still be illegal onderhuur if the landlord never said yes.

If you want a legal sublet, the checklist is boring and strict: check the lease, get written landlord permission, sign a real contract, do not overcharge, and make sure registration is possible if needed. That is exactly why legal summer sublets are relatively rare on Facebook. The whole platform rewards speed and informality, while legal subletting requires paperwork and permission.

If a student offers you a room directly, I would not start by asking for more photos. I would ask for proof of written landlord approval and whether BRP registration is allowed at that address.

If those answers are vague, I would walk away.

That may sound harsh in a market like Amsterdam or Utrecht, where people are desperate and deadlines are real. But the alternative is worse: paying for a room you cannot properly use, losing your deposit, or getting stuck in a setup where the landlord can shut it down the moment they discover it.

I’m not saying every sublet is illegal. I am saying the default assumption should be the opposite of what many newcomers believe. A summer room offered by the current tenant on Facebook is often unauthorized until proven otherwise.

Use verified platforms where possible. Ask for the actual lease terms. Ask whether the rent matches the hoofdhuurder’s rent. Ask whether the municipality registration is allowed. If the person gets irritated by basic questions, that tells you enough.

The Dutch rental market is already hard. You do not need to add illegal onderhuur to it.

Stay sharp.