For example, if you have a one-year contract, your landlord cannot increase your rent “just because” halfway through your contract. He can, however, give you a three-month notice for a rent increase (meaning your rent will go up three months after you are notified) for a particular reason, such as a major renovation. Even then, the increase cannot be more than 10 percent annually by law. You can always fight this increase by having a conversation with your landlord and pointing out how you’ve been a great tenant (always paid on time, no damage to the property) and ask him to reconsider.