Commercial leases in Flanders are governed by the federal law of 30 April 1951 on commercial leases (bail commercial / handelshuur). Although Flanders has its own housing decree for residential lettings, commercial leases remain a federal competence applicable uniformly across Belgium. The law protects tenants who use the premises for direct contact with the public in the exercise of retail trade or artisanal activities. This includes shops, restaurants, pharmacies, hairdressers, and similar businesses. Professional offices, warehouses without public access, and wholesale operations typically do not qualify. For international entrepreneurs setting up a business in Flanders, understanding whether the activity falls under the commercial lease regime is essential, as it determines the level of legal protection available. The lease must be registered with the FPS Finance within four months of signing.
The minimum duration of a commercial lease is 9 years. During this period, the tenant can terminate at the end of each 3-year period (triennale) by giving at least 6 months’ notice via registered letter or bailiff. The landlord cannot terminate early except in specific cases provided by law, such as personal occupation or major renovations, and must pay compensation to the tenant. If neither party acts at the end of the 9-year term, the lease is tacitly renewed under the same conditions. Shorter commercial leases of up to 1 year are permitted but do not benefit from the full protections of the 1951 law: they cannot be tacitly renewed and total occupation cannot exceed 1 year. If the tenant remains beyond 1 year, the short lease automatically becomes a standard 9-year commercial lease dating from the original start.
The tenant has the right to request up to three successive lease renewals of 9 years each, potentially spanning 36 years of occupation in total. The renewal request must be sent by registered letter or bailiff between 18 and 15 months before the current lease expires. The landlord must respond within 3 months; silence counts as acceptance. The landlord can refuse renewal only on specific grounds: personal occupation, demolition/reconstruction, serious breach by the tenant, or offering a higher rent to a new tenant (in which case compensation is due). If renewal is refused without valid grounds, the tenant is entitled to compensation of 1 to 3 years’ rent depending on the circumstances. For expat landlords in Flanders, it is crucial to monitor these deadlines carefully, as missing the response window means automatically accepting the renewal.
Rent can be revised every 3 years if either party proves the rental value has changed by at least 15% due to new circumstances (not the tenant’s own improvements). This request is made before the justice of the peace. Annual indexation based on the consumer health index applies automatically unless the lease excludes it. Regarding assignment, the tenant can transfer the lease to a buyer of their business. The landlord must be notified and can object only on serious grounds. The landlord can also request increased rent if the assignment leads to a manifest change in the property’s use. Subletting the entire premises is allowed under the same conditions as assignment, but subletting part of the space requires the landlord’s written consent. These rules provide flexibility for growing businesses while protecting the landlord’s legitimate interests.