The amount of rent increase a tenant can be charged depends largely on the location of the rental property, according to Nolo. Some cities have rent control, where rent can only be raised a certain percentage, and other places are free to raise rent as much as the owner desires.
Typically, rent can only be raised once a lease is up, states Nolo. If a renter is in a month-to-month lease, the landlord must notify the renter of a rent increase and can increase the rent on a monthly basis. The warning time and delivery of a rent increase depends upon the laws of the state or city in which the building is located.