Rent increases are subject to strict rules under the Good Landlordship Act. A clause allowing automatic annual increases above the statutory index without the tenant's consent is void (Article 7:247 BW). The maximum increase follows the rent index published by the CBS and may not exceed inflation plus 1% in the case of liberalisation.
For social housing, approval by the Rent Committee applies. Void provisions, such as 'rent follows market developments', are disregarded; only the statutory increase applies. Tenants can object within six weeks of notification. Proof of overpayment leads to repayment with 6% interest.
Courts often annul clauses that link service costs to rent increases. Landlords must request written consent for deviations. Consequence of nullity: rent remains at the old level until new agreement. Organisations like Huurteam assist with calculations. Check your contract annually to avoid unpleasant surprises and file claims. (198 words)