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Dual registration of rental agreements in Brussels in 2025: what lessors need to know

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From 1 January 2025, landlords in the Brussels Region will have to comply with a new administrative requirement: registering their lease contracts on a dedicated regional platform, Irisrent. This requirement comes in addition to the traditional federal registration on MyRent, raising questions about lease management and the possible implications for landlords and tenants. Here’s a look at the new rules and the issues they raise.

A new regional platform for rental agreements

In order to increase transparency in the rental market, the Brussels-Capital Region is setting up a database that will make it possible to record lease contracts in greater detail. This platform, which will be operational via IRISbox, aims to collect essential information on rented accommodation:

  • Identity of the lessor and lessee
  • Characteristics of the property (address, type, surface area, number of bedrooms, PEB, meters, etc.)
  • Details of the contract (amount of rent, service charges, term of the lease, indexation, etc.)

The stated aim of the Brussels authorities is to obtain more accurate data in order to improve the indicative rent scale and provide a better framework for changes in the rental market.

A federal obligation that is still in force

Until now, the registration of lease contracts was the responsibility of the FPS Finance via MyRent, the federal portal. However, the Brussels Region has announced its intention to replace this obligation with its own registration system. However, this decision has been challenged by the federal government, which points out that responsibility in this area remains at national level.

To date, the federal registration requirement has not been officially abolished. An appeal has been lodged with the Constitutional Court, and pending a decision, landlords will have to register their leases on MyRent AND on Irisrent.

What are the consequences for homeowners?

In practice, this double declaration entails additional administrative formalities for Brussels lessors. Failure to comply with this obligation may result in various penalties:

  • At federal level: a fine of €50 for failure to register on MyRent.
  • At regional level: contractual restrictions, such as the impossibility of indexing the rent or imposing compensation in the event of the tenant leaving early.

Lessors associations such as the SNPC are therefore recommending that lessors continue to register their rental agreements on both platforms until the legal situation has been clarified.

Conclusion

The introduction of dual registration of rental agreements in Brussels in 2025 represents a significant change in rental management. While this measure aims to provide greater transparency in the rental market, it also creates administrative complexity for lessors. In the absence of a clear agreement between the different levels of government, it is essential for lessors to comply with both obligations in order to avoid possible sanctions.

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