Yes, the intended use must be specified in the lease
The lease must specify the intended use of the property (primary residence, student housing, commercial, mixed use, etc.). This is mandatory because the applicable legal regime depends on the stated use. Different uses trigger different tenant protections, termination rights, and registration obligations. Using the property for a purpose not stated in the lease can constitute a breach.
The intended use clause is one of the most important elements of a Belgian lease. It determines which body of law governs the rental relationship:
- Primary residence: regional housing legislation (strongest tenant protections)
- Student housing: specific student lease provisions
- Commercial use: the Commercial Lease Act of 30 April 1951
- Professional use (liberal professions): standard civil lease
- Mixed use: combination of applicable regimes
Incorrectly stating the use — or failing to state it — can lead to disputes about which legal protections apply.
Types of use and their legal regimes
| Intended use | Applicable law | Key protections |
|---|---|---|
| Primary residence | Regional housing decrees | 9-year default, tenant termination at any time |
| Student housing | Regional student lease provisions | Shorter duration, specific termination rules |
| Shared housing | Regional shared housing provisions | Individual exit rights, shared housing agreement |
| Commercial | Commercial Lease Act | 9-year term, renewal rights |
| Professional (liberal) | Civil Code | No specific protections |
| Mixed (residential + professional) | Depends on primary use | Primary use determines the regime |
BailBelgique asks you to specify the intended use at the start of the lease creation process. The platform then generates the correct legal clauses, mandatory annexes, and registration requirements for that specific use type.
Legal consequences of incorrect or missing use specification
Several problems can arise if the intended use is not properly specified:
- Dispute over applicable law: if the lease does not state the use, courts will determine it based on factual evidence, which creates uncertainty
- Breach of lease: using the property for a purpose not stated in the lease (e.g., running a business from a residential lease) is a breach that can lead to termination
- Insurance issues: property insurance is linked to the stated use; using the property differently may void coverage
- Tax implications: the landlord’s tax treatment depends on the lease type
- Planning permission: certain uses require specific urban planning permits
If you are a tenant using the property for a purpose different from what is stated in the lease, you are at risk. The landlord can seek lease termination for breach, and your insurance may not cover damages. If your use has changed, negotiate a lease amendment with the landlord.
Regional specifics
Brussels-Capital Region
The Brussels Housing Code requires clear specification of the intended use. Brussels has specific provisions for mixed-use properties where part of the premises is used for residential and part for professional purposes. The dominant use determines the applicable regime.
Wallonia
The Walloon Residential Lease Decree mandates the use specification. Wallonia has also introduced minimum quality standards linked to the stated use, ensuring the property is suitable for its intended purpose.
Flanders
The Flemish Housing Rental Decree requires the intended use in the lease. Flanders links the use specification to its housing quality standards and urban planning regulations, which may restrict certain uses in residential zones.
Regional housing legislation requires specification of intended use. The applicable legal regime (residential, student, commercial, civil) depends on the stated use. Belgian Civil Code provides fallback rules for unspecified use.