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Rent reduction for unrealised works: tenant's rights

Can the tenant request a rent reduction if the landlord fails to carry out promised works? Conditions, procedure, and case law in Belgium.

EH Par Edouard Hennin 2 min de lecture Mis a jour le May 28, 2026
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The tenant’s right to a rent reduction

The landlord is obliged to maintain the property in good condition (article 1720 of the Civil Code). If the landlord fails to carry out necessary works, the tenant may request a rent reduction.

SituationTenant’s right
Works promised in the lease not carried outRent reduction or forced execution
Failure to maintain (landlord’s obligation)Rent reduction
Unsanitary conditionsReduction + damages
Cosmetic works not carried outGenerally no reduction

The tenant cannot decide alone to reduce or withhold the rent. Only the justice of the peace can authorise it.

Procedure to obtain a rent reduction

Step 1: formal notice

Send a formal notice by registered letter to the landlord:

  • Describe the works not carried out
  • Cite the lease clause or legal article
  • Set a deadline (15-30 days)

Step 2: application to the justice of the peace

If the landlord does not respond, apply to the justice of the peace. You may request:

  • An order to carry out the works with a penalty
  • A rent reduction from the date of the formal notice
  • Damages

Evidence to gather

Gather evidence: photos of defects, lease clause, formal notice, repair estimates, testimonies.

Amount of the rent reduction

The judge sets the reduction on a case-by-case basis, proportionate to the loss of enjoyment:

Severity of defectTypical reduction
Minor (tap, paint)5-10%
Medium (partial heating, damp)10-25%
Severe (no heating, unsanitary)25-50%
UninhabitableFull suspension of rent

[!warn] Warning Never withhold rent on your own initiative. Pay normally and request the reduction from the judge. Unilateral withholding exposes you to an action for unpaid rent.

What to do when the landlord does not carry out works

Send a formal notice, document everything and apply to the judge if necessary. The tenant has strong rights against a defaulting landlord.

See the guide on rights and obligations and the rental disputes guide. Use a rental management software to document exchanges.

Frequently asked questions

  • Yes, if the landlord fails to meet the maintenance obligation or does not carry out works promised in the lease. The tenant must first send a formal notice, then apply to the justice of the peace, who may grant a proportional rent reduction.

  • No, the tenant cannot unilaterally deduct the cost of works from the rent. Written agreement from the landlord or authorisation from the justice of the peace is required. Without agreement, the tenant risks an action for unpaid rent.

  • Works related to health, safety, and normal enjoyment of the dwelling: faulty heating, untreated damp, unrepaired leak, dangerous electrical installation. Purely aesthetic works generally do not justify a reduction.

Verifie & redige par
Edouard Hennin
Real estate expert since 2018, Edouard supports Belgian landlords and tenants through their rental processes. He oversees the writing of every guide in collaboration with the legal team and ensures all content reflects current legislation in Brussels, Wallonia and Flanders.
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Publie May 19, 2026
Derniere verification May 28, 2026
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