Coliving and shared housing: Everything you need to know about the shared housing lease in Brussels in 2026

The evolution of shared housing in the Belgian capital

With soaring property prices and the constant appeal of the European capital, shared housing and coliving are no longer just trends, but genuine, sustainable ways of life. Students, young professionals, and even people in their forties are turning to these solutions to combine comfort, community, and savings. At Roomlala, we see this growing demand for communal living every day. However, renting as part of a group involves shared responsibilities and a strict framework. As of the start of 2026, Brussels regulations have been refined to protect both hosts and tenants. At the heart of this system is the Brussels shared housing lease, a specific contract that is essential to master. We break down the legal rules, the traps to avoid, and the new taxes that are reshaping the landscape of shared housing in Brussels.

Understanding the Brussels shared housing lease: A single, joint contract

Brussels housing legislation has clarified the situation for shared living by imposing a secure framework. Gone are the days of verbal agreements or precarious contracts: the standard is now structured around a joint commitment.

See also: Shared housing in Wallonia: New tenancy rules for young professionals in 2026, New CIN regulations in Italy: Why hosts are turning to shared housing in 2026 and 2026 Youth Rental Grant: How to benefit from the aid to rent a room in Spain

The principle of the single contract

In the Brussels-Capital Region, a shared housing lease is fundamentally based on a single contract. This means that all tenants sign the same document and are jointly bound to the landlord. The host does not rent out separate rooms, but rather the entire property to a group considered as a single legal entity.

This formality offers a major advantage: it guarantees equal rights for all occupants. Everyone has the same rights regarding the use of both shared and private areas. At Roomlala, we always recommend reading this document carefully before signing, as it sets the duration, the total rent amount, and the renewal conditions for the entire group.

Let’s look at a practical example: Julien, Sophie, and Marc decide to rent a townhouse in Schaerbeek. They all sign the same lease. If the host wishes to index the rent or carry out work, they must address the group as a whole. This single contract is the cornerstone of a peaceful and stable long-term Brussels rental.

The solidarity clause: what it really implies

The direct corollary of the single contract is the famous solidarity clause. It is the element that reassures hosts and requires a high level of trust between flatmates. In practice, this clause stipulates that every signatory is responsible for the entire rent and utility charges towards the host.

If one of the flatmates defaults and does not pay their share, the host has the right to demand full payment from any other flatmate. Solidarity also extends to any potential damage discovered at the end of the lease. The host will not try to find out who scratched the living room floor; they will simply deduct the amount from the total security deposit or pursue the group.

This is why choosing your future flatmates is crucial. At Roomlala, we facilitate communication beforehand so you can assess the reliability of your future living partners. Good personal rapport must be accompanied by total financial transparency to ensure the solidarity clause does not become a burden.

The shared housing pact: The essential and mandatory tool

To counterbalance the rigidity of the single lease and the solidarity clause, the Brussels legislature has made an internal document mandatory: the shared housing pact. It serves as the internal rules for your community life.

What must this legal document contain?

The shared housing pact is the internal law of your flat. It must be written and signed by all flatmates before even moving in. Its objective is to prevent conflicts by clarifying the rules of the game from day one. To be effective, it must be as comprehensive as possible.

Here are the essential elements it must detail:

• Financial distribution: Who pays what? The exact division of the total rent (often proportional to room size) and the distribution of utility charges (water, electricity, internet, insurance).
• Allocation of damages: The rules for determining who is financially responsible if a shared or private item is damaged.
• Daily life: Housekeeping organization, rules regarding guests, quiet hours, and whether or not pets are accepted.
• Inventory: The list of furniture and equipment brought by each person to facilitate recovery upon departure.

For example, if Sophie’s room has a private bathroom, the pact will record that she pays 100 euros more than Julien and Marc. If the shared washing machine breaks down due to normal wear and tear, the pact will specify that replacement costs are divided by three.

The legal value of the pact against the host

There is one fundamental point of vigilance we wish to highlight at Roomlala: the shared housing pact only has legal value between the flatmates. It does not bind the host in any way. The host will always and only refer to the main lease.

However, in the event of a serious dispute between flatmates, this pact becomes your best legal weapon. If Marc refuses to pay his share of the bills for three months, Julien and Sophie will have to front the money to the host (due to solidarity). But they will then be able to use the shared housing pact before the Justice of the Peace to force Marc to reimburse them.

Therefore, take the time to draft it meticulously. A good pact is the guarantee of a harmonious shared living experience where everyone knows their rights and duties.

2026 Belgium coliving law: Beware of municipal taxes

While traditional shared housing is well-regulated, coliving (which offers furnished private spaces with high-end shared services) is still navigating murky waters. In 2026, tensions between coliving operators and local Brussels authorities reached a critical point.

The legal ambiguity of coliving and individual leases

As the 2026 Belgium coliving law is not yet fully unified, many operators have structured their offerings around individual leases. In this model, each tenant signs a contract only for their room and access to common areas, without any solidarity clause with other occupants. On paper, it is very attractive for young professionals who want flexibility without financial risk linked to others.

However, regional and municipal authorities view this proliferation of individual leases in single-family homes very negatively. They consider it to be a disguised hotel activity or property speculation, which undermines the traditional real estate market intended for families.

A consequence of this legal ambiguity: municipalities have decided to crack down to regulate what they consider a drift in shared housing.

Financial risks for a long-term Brussels rental

This is where our second major point of vigilance comes in. Facing this development, several highly sought-after Brussels municipalities, such as Etterbeek, Ixelles, or Saint-Gilles, have introduced punitive taxes on shared housing units operating with individual leases.

These taxes are heavy: they can reach up to 1550 euros per year for each individually rented room. For an operator managing a 6-room house, the bill exceeds 9000 euros annually. Inevitably, these costs are passed on to the tenant's final rent, making coliving with individual leases overpriced.

To circumvent this crushing taxation, the trend in 2026 is a forced return to the single shared housing lease. Municipalities generally exempt housing under a single joint contract from this tax. If you are looking for a coliving space, it is imperative to inquire about the nature of the lease offered to avoid unpleasant pricing surprises.

Managing your departure and the security deposit during the lease

Life is full of unexpected events: a professional opportunity abroad, the desire to move in with a partner... Leaving a shared flat before the end of the term is common, but the procedure in Brussels is strictly regulated to protect those who remain.

The rules of notice for an early departure

Brussels law allows a flatmate to terminate their commitment before the lease expires. To do this, they must notify their departure by registered letter to the host and all their flatmates, respecting a 2-month notice period.

But beware, there is a condition sine qua non: the outgoing tenant must find a replacement. They must propose a new candidate who is solvent and acceptable both to the host and to the remaining flatmates (who will have to live with them). If the outgoing tenant proves they have carried out active and serious research but no candidate is accepted (often due to unreasonable blocking by others), they can still be released from their obligations at the end of the notice period.

At Roomlala, our platform is the ideal tool to quickly find this replacement and ensure a fluid transition, thus avoiding the outgoing tenant having to pay double rent.

The puzzle of the capped security deposit

In Brussels, the security deposit is strictly capped at 2 months' rent excluding charges, regardless of the form of the lease (shared housing or coliving). It is generally blocked in an individualised bank account in the names of all flatmates.

The real puzzle arises during an early departure. Indeed, the security deposit remains blocked at the bank until the end of the main lease. The host will not sign a document to release one-third or one-fourth of the sum, as they need the total deposit to cover the property until the contract ends.

The outgoing tenant therefore cannot recover their deposit from the bank or the host. They must arrange this internally: it is the new replacement tenant (or, failing that, the remaining flatmates) who must pay them their share of the deposit. We strongly advise you to record this financial exchange in an amendment to the shared housing pact, signed by all parties, to keep an incontestable written record of this transaction.

Conclusion

In 2026, shared housing and coliving in Brussels offer fantastic housing opportunities, provided you master the legal mechanisms. The single shared housing lease, the solidarity clause, and the shared housing pact are the pillars of successful cohabitation. Be particularly vigilant regarding coliving offers with individual leases, under pain of indirectly suffering the wrath of municipal taxes. At Roomlala, we are committed to supporting you in these processes so that your shared housing experience in the Belgian capital is as secure as it is rewarding.