An implicit guarantee that the rental is always in a habitable state. This applies to all leased property, whether expressly mentioned in the rental agreement or not. Always read your entire lease. You may very well discover restrictions and procedures that will thwart your assumptions about how a rental agreement works. Most landlords will offer lease agreements with a high degree of detail in order to protect both parties. For example, leases can take many forms. Basically, a lease means that you agree to pay the rent for a particular property for a certain period of time. Most rental agreements do not calculate the costs incurred in these areas, but there have been cases where landlords have spread damages among all tenants. September to cancel a full refund.