is a sensible approach for reducing traffic volume and energy consumption. The classic office job with mandatory attendance is being replaced; today every fifth employee is performing job-related tasks at home. The question is no longer if people work from home, but rather how they want to work from home. An office, or several work stations, can be opened in an Elastic apartment, and it will not be noticed that someone also lives there. Additionally, the tax advantages can be checked with simple arithmetic: the explicit double use adds up as the activities take place concurrently, and office hours can be included in the calculation of operational use.