The planning, renovation, refurbishment, and construction of real estate, upcycling, as well as the reuse of materials, furniture, and vehicles; trade and sale of vehicles, building materials, and furnishings. Providing services in the fields of construction, crafts, real estate, and sustainability, including the subcontracting of labor to third-party companies (craft or construction businesses). Furthermore, the sole proprietorship can promote projects and activities with a social or labor market integration focus, particularly support the employment and reintegration of people in craft, sustainable, or circular economy-related work areas. Conducting courses, training sessions, events, and projects to promote sustainable building and living culture, as well as engaging in all business activities that are directly or indirectly related to this purpose.