The landlord freely sets the rent
In Belgium, the landlord sets the rent freely at the time the lease is signed. There is no maximum rent imposed by law for private housing. Only social housing is subject to rent caps.
The freedom to set rent derives from the principle of contractual freedom enshrined in article 1709 of the Civil Code. The landlord and tenant agree on an amount during lease negotiations.
This means that:
- The landlord can ask any rent they wish
- The tenant is free to accept or refuse
- No authority approves or controls the rent amount
However, an excessive rent will lead to vacancy: the property will remain empty longer, which costs more than an adjusted, market-rate rent.
Criteria for setting a competitive rent
To set a competitive and realistic rent:
- Compare with the local market: check listings on Immoweb for similar properties (same municipality, surface area, number of bedrooms)
- Consult the indicative grid: in Brussels, the rent grid provides an official price range
- Assess the property condition: fitted kitchen, recent renovation, double glazing increase rental value
- Consider the EPC rating: an A or B certificate justifies a higher rent; a low EPC may deter candidates
- Factor in charges: specifying whether charges are fixed or actual affects the perception of total rent
| Criterion | Impact on rent |
|---|---|
| Location (city centre vs periphery) | +20% to +40% |
| EPC A-B vs EPC E-F | +10% to +15% |
| Fitted kitchen | +5% to +10% |
| Terrace / garden | +5% to +10% |
| Parking included | +50 to +120 EUR/month |
Set your rent slightly below the market maximum to attract quality candidates quickly. One month of vacancy costs more than a 30 EUR/month reduction in rent.
Changing rent during the lease
Once the lease is signed, rent can only be changed in two ways:
- Annual indexation: on the lease anniversary date, the landlord can apply the indexation formula based on the health index
- Triennial revision: at the end of each three-year period (3rd, 6th, 9th year), either party can request a rent revision if circumstances have changed by more than 20%
The landlord cannot unilaterally increase rent outside these two mechanisms. Any clause providing for automatic increases (other than indexation) is void.
Regional specifics
Brussels-Capital Region
The Ordinance of 27 July 2017 introduced the indicative rent grid. This grid is not binding but provides an objective reference. Brussels regularly considers stricter rent control but has not yet implemented it.
Wallonia
The Decree of 15 March 2018 does not provide an indicative grid or rent cap. The Walloon market is generally less tight than the Brussels market.
Flanders
The Flemish Housing Rental Decree of 9 November 2018 does not cap private rents. Flanders focuses on market transparency and housing quality (strict quality standards).
Civil Code, articles 1709 et seq. — contractual freedom. Law of 20 February 1991, art. 6 — triennial revision.