To continue to develop existing building types and do so in an intelligent way is one of the crucial tasks in the field of residential building. For the success of the individual design as well as for ensuring that tried and tested structures can be utilized, repeated, and varied in a wide range of situations, a deeper understanding of the underlying types is indispensable. For this typology of residential buildings, the authors have developed systematic new presentations of the most innovative types. Each individual volume lays out the possibilities for using and transforming a particular form of residential structure. The third volume deals with the types of the townhouse. It will address the following topics among others: single- versus multistory construction, density, privacy versus publicity, and the connection of living and working. Within each type, variants are distinguished according to how they organize space, their number of floors, etc. The range of possible solutions is presented in uniform ground plans newly drawn to scale.