Each rental agreement must contain: in this type of contract, a tenant pays a non-refundable option fee in exchange for the option to buy the house at a predetermined price. If the tenant decides not to buy the property, the lessor retains the option fee. Your landlord may charge a fee for changing your lease. You can only pay yourself if you have requested the change. If your landlord questions you a change you didn`t ask for, you can ask for the money or report it to trading standards. A tenant without a written agreement always has legal protection. Your rental agreement also determines your responsibilities and the responsibilities of the lessor throughout the rental terms.