That depends on your particular rental contract. Normally you don't have to contact your landlord. However, we recommend that you let your landlord know. If you move house you can simply take your tado° with you and re-install the old thermostat in the home you are leaving. Alternatively you could leave tado° for the next tenant. In this case you have to ask the landlord if they would like to leave tado° installed in the home and transfer the costs to the next tenant. If so, we will organise a new tado° for your next home.