The economic crisis brought about a new paradigm in architecture and planning. Instead of serving large-scale investments and targeting fictional customers, the new development logic gives preference to the reuse of existing buildings and spaces by helping them to gradually adapt to new functions and accommodate new users. Dutch practitioners were at the forefront of experimenting with new approaches to vacant properties and community-led urban regeneration. By pioneering innovation in design, policy and management to address the problem of vacancy, they established models that inspired like-minded initiatives across the world. Between 2012 and 2015, the KÉK – Hungarian Contemporary Architecture Centre invited to Budapest a dozen Dutch practitioners, whose work is organized around the reuse of vacant buildings and areas. Vacant City is the result of these encounters, assembling the key thoughts and experiences of the program’s 3 years.