einszueins architektur is a Vienna-based architecture studio founded in 2006 by Katharina Bayer and Markus Zilker. The firm specializes in housing and urban planning, with a distinct focus on collaborative processes and resident participation. Their approach emphasizes dialogue and co-planning, aiming to design environments that actively involve future inhabitants in decision-making and spatial organization.
Since its founding, einszueins has developed a series of high-profile co-housing projects in Vienna and beyond. Notable examples include Wohnprojekt Wien, completed in 2013, which provides 40 residential units along with 700 square meters of communal space and 350 square meters for commercial uses. Residents were deeply involved in every stage, from urban development to individual layout decisions, resulting in adaptable architecture and strong community bonds. The project is recognized for incorporating vehicle-sharing schemes, supported apartments for vulnerable groups, and communal facilities like a rooftop sauna and gardens.
Another recent project is Gleis 21, featuring around 45 adult and 25 underage residents who collectively manage and shape the living environment. The building uses a hybrid wood-concrete structure to achieve both sustainability and affordability, while offering multifunctional communal facilities such as workshops, a library, and a fitness room.
einszueins architektur’s portfolio demonstrates a commitment to ecological construction methods, social diversity, and innovation in both architectural and community models. Their work has served as a reference for sustainable housing development in Austria and is featured in exhibitions and professional forums on alternative living.