Population growth and immigration increase the demand for mass housing developments all over the world. These developments are widely criticized for being mono-functional, mono-typological, and mono-cultural. This project is a design method for a new kind of mass housing. All design rules are reformulated as algorithms, that interact with each other. Important input for the design rules is the future dweller. This leads to a bottom up, dynamic process, providing each dweller with a well fitted house, in a differentiated environment that provides public space and services. The geometry is optimized to use material as efficient as possible, which would be possible in the near future with full scale 3-D printers that are being developed at the moment.