An apartment lease works by both the tenant and landlord signing the document once they agree to it. The lease will outline all the rules of the building, including any noise restrictions, information about whether or not smoking is allowed in the building, and what types of utilities may be included in the rent. Once the lease is over, a tenant usually has a chance to sign a new lease. Landlords may refuse to offer another lease if there have been any disagreements between them and the tenant. Damage to the apartment that the landlord may notice when they are working on other repairs within the unit could prompt a landlord to not want to offer a lease renewal. Many states have regulations that favor tenants, so it can be difficult for a landlord to evict a tenant with a lease. For this reason, leases can be a way for anyone renting a house or apartment to protect their rights. Landlords often like leases as well because they are a way to outline all the regulations of the building in writing and serve as a document that can be referred to when questioning a tenant's activities after they move in.