Our old agreements still contained data protection guidelines on the back, which were not as detailed as they are today, but which we felt were sufficient to continue the rest of the lease. If new tenants take over real estate, they will soon disappear in time. Have you saved or recorded personal information about your tenants on an electrical appliance, for example.B. rental requests, contact details, rentals? If you take on a new tenant, you will inevitably collect, store, and use their personal information (data). For example, use their contact information to communicate with them during the creation of the lease agreement and you may have already passed it on to get financial and other references, for example.B. from a bank or a former owner. . .