The Variowohnungen concept in Coburg combines compact apartments with shared spaces. Units starting at 20 m² include a living area, kitchen and bathroom; up to three modules can be joined to form a larger apartment. A recurring basic module provides the starting point for different apartment sizes. The German federal Variowohnungen programme supported affordable, sustainable housing for students and trainees. Flexible layouts also allow use by other groups, including older people. Shared rooms provide space to meet and exchange ideas. They complement private retreat, while the modular system accommodates changing needs. The role at Thoma Architekten included the design concept and 2D drawings.