My thesis descends first from the concept jungle to the basics of flexibility. By restudying its
uncomplicated initial postulates its field of application can be extended. With the initial instructions
the study goes into discourses on housing and flexibility and lays the foundation for updating
them in relation to the emerging service and information society. The findings are crystallized into
concepts illustrated with contemporary examples. The thesis is deepened by a case design study for
a townhouse quarter in Jätkäsaari, Helsinki.