Both options are legally valid in Belgium
Both a single joint lease and separate individual leases are legally valid for shared housing in Belgium. A single lease is simpler to manage and can include a solidarity clause. Separate leases give each tenant full independence but require more administration. The best choice depends on the parties’ preferences and risk tolerance.
The choice between a single joint lease and separate leases is one of the most important decisions when setting up shared housing. Each structure has distinct legal, financial, and practical implications for both the landlord and the tenants.
In practice, single joint leases are more common because they are simpler for the landlord to manage. However, separate leases are gaining popularity, especially in purpose-built shared housing, because they offer more flexibility for tenants.
A shared housing agreement (pacte de colocation) is recommended regardless of which lease structure you choose.
Detailed comparison
| Feature | Single joint lease | Separate individual leases |
|---|---|---|
| Number of contracts | 1 for all co-tenants | 1 per co-tenant |
| Solidarity clause | Possible (all liable for full rent) | Not applicable (each pays own share) |
| Tenant departure | Requires amendment or all-party agreement | Individual notice, no impact on others |
| Deposit | Single deposit for all | Individual deposit per tenant |
| Registration | 1 registration on MyRent | Multiple registrations |
| Administrative load | Lower for landlord | Higher for landlord |
| Tenant independence | Lower | Higher |
| Vacancy risk | Shared by all tenants | Borne by landlord |
Recommendation for landlords: a single joint lease with a solidarity clause provides maximum security. If one tenant leaves, the others cover the full rent.
Recommendation for tenants: separate individual leases offer the most flexibility and protection, allowing you to leave without affecting others.
BailBelgique supports both structures. For a single joint lease, the platform includes an optional solidarity clause and individual exit clause. For separate leases, each contract is generated individually with proper references to shared spaces.
Financial implications
The financial impact of each structure is significant:
Single joint lease:
- Rent: one total amount, divided informally among co-tenants
- Deposit: one deposit (typically 2-3 months of total rent)
- Charges: one bill, divided among co-tenants
- Vacancy: co-tenants cover the missing share (with solidarity clause)
- Departure: departing tenant must negotiate deposit return with co-tenants
Separate individual leases:
- Rent: each tenant pays their own fixed amount
- Deposit: each tenant has an individual deposit account
- Charges: each tenant responsible for their share
- Vacancy: landlord absorbs the loss of the empty room
- Departure: clean financial separation, individual deposit return
With a single joint lease and solidarity clause, each co-tenant is liable for the entire rent, not just their share. If one co-tenant stops paying, the landlord can claim the full amount from any of the remaining co-tenants. This is a significant financial risk that tenants should understand before signing.
Regional specifics
Brussels-Capital Region
Brussels has the most developed legal framework for shared housing. The Brussels Housing Code recognizes shared housing as a specific lease type and provides rules for both single and separate lease structures. Brussels allows individual departure with 2 months’ notice regardless of lease structure.
Wallonia
The Walloon Residential Lease Decree includes provisions for shared housing. Both lease structures are recognized. Wallonia requires a minimum lease duration and specific clauses for shared housing arrangements.
Flanders
The Flemish Housing Rental Decree recognizes shared housing and allows both structures. Flanders has specific provisions for individual tenant departure and requires clarity on the division of common charges in the lease.
Regional housing legislation governs shared housing lease structures. Brussels: Ordinance of 27 July 2017. Wallonia: Decree of 15 March 2018. Flanders: Decree of 9 November 2018. Federal Civil Code provides fallback rules on solidarity and joint obligations.