Automatic renewal depends on the lease type
A 9-year residential lease that expires without notice is extended for 3-year periods under the same conditions. A short-term lease (3 years or less) may automatically convert to a 9-year lease if neither party gives proper notice before expiry. Commercial leases do not renew automatically — the tenant must formally request renewal.
Automatic lease renewal is one of the most important mechanisms in Belgian rental law, and it frequently catches both landlords and tenants by surprise. Understanding the renewal rules for each lease type is essential for proper lease management.
The default rule for residential leases strongly favours continuity: the lease continues rather than ending, unless one of the parties takes active steps to terminate it. This protects tenants from sudden displacement while also protecting landlords from vacancy.
Renewal rules by lease type
| Lease type | What happens at expiry | Notice required | Consequence of no notice |
|---|---|---|---|
| 9-year lease | Extended by 3-year periods | 6 months before expiry | Continues under same conditions |
| Short-term lease (1st time) | May convert to 9-year | 3 months before expiry | Becomes 9-year lease |
| Short-term lease (renewed once) | Depends on total duration | 3 months before expiry | May become 9-year lease |
| Student lease | Usually ends automatically | Varies by region | May require notice |
| Commercial lease | Does not renew automatically | 18-15 months before expiry | Lease ends |
Key principle: for residential leases, inaction leads to continuation. For commercial leases, inaction leads to termination.
BailBelgique sends automatic renewal reminders well before the deadlines. Never miss a critical notice date and avoid accidental lease extensions or conversions.
How to prevent automatic renewal
For a 9-year lease:
- The landlord must give 6 months’ notice before the 9-year expiry
- The tenant must give 3 months’ notice before expiry
- If both miss the deadline, the lease continues for another 3 years
For a short-term lease:
- Either party must give 3 months’ notice before expiry
- If the notice is missed, the lease converts to a 9-year lease counted from the original start date
- The tenant then has all the rights of a 9-year lease
Critical deadlines to calendar:
- 9-year lease: landlord notice at month 102, tenant notice at month 105
- Short-term lease: both parties notice 3 months before expiry
The most common mistake is failing to give timely notice for a short-term lease. If your short-term lease expires without proper notice, it automatically converts to a 9-year lease. As a landlord, this means you cannot terminate for another 9 years except under specific legal grounds. Set calendar reminders well in advance.
Regional specifics
Brussels-Capital Region
The Brussels Housing Code follows the standard renewal rules. Brussels has specific provisions for student leases, which may have different renewal mechanisms. The automatic conversion of short-term to 9-year leases applies in Brussels.
Wallonia
The Walloon Residential Lease Decree applies the same automatic renewal rules. Wallonia has also introduced specific provisions for short-term lease renewals, limiting the total number and duration of extensions.
Flanders
The Flemish Housing Rental Decree follows the same principles. Flanders has specific rules on short-term lease extensions: a short-term lease can be renewed once (or extended to a maximum of 3 years total), after which it automatically converts to a 9-year lease.
Regional housing legislation governs lease renewal. Standard 9-year lease: automatic extension by 3-year periods. Short-term lease: automatic conversion to 9-year lease if no notice given. Commercial Lease Act, art. 13-14: no automatic renewal, formal request required.