Knowing how and when the rent of an apartment should be updated is essential to avoid problems with the landlord or the tenant. In Spain, except for different agreements between the lessor and the tenant, it is the CPI that sets the amount that the rent will increase or decrease. Since 2013, the rent may or may not be allowed to update.
Like most rents, it is necessary to update the rents to adjust to the evolution of the cost of living. This update is done annually, but unlike the update of the rest of the rents, it is not carried out at the turn of the year.