To avoid legal conflicts, it is important to keep a copy of an Iowa sublease agreement. This document protects you from the landlord unjustly charging you or claiming you have violated the lease. It protects the subtenant from being wrongfully evicted if they have abided by the sublease agreement.An Iowa sublease also acts as documentation to show in court if the landlord is not upholding their side of the agreement. Ultimately, it gives both tenants peace of mind for the duration of their sublease.