In case of dispute, proof of the modification can be made if: Panda Tip: Waterbeds are a known danger for owners. By prohibiting the rental agreement or ensuring that any damage is covered by the tenant, this is an important protection for the owner. A rental agreement usually has a fixed term, for example. B one year. However, a landlord can waive penalties and allow a tenant to break a lease. It is recommended that you consult your local real estate laws. It is more difficult to prove what was agreed if it is not written. This is due to the fact that there is often no evidence of what has been agreed or that a particular problem has arisen that does not cover the agreement. . . .