Contracts How old do you have to be to rent an Apartment? Contracts You must be 18 years old to be able to enter a contract. If you are under 18, you cannot enter a lease agreement with a landlord. Previous article: By lying about my age, I entered into contact and got a credit card using my own social security number. Is this contract enforcable? Prev Next article: how old do you have to be to rent a motel room? Next