The goal of this thesis is to design, optimize and develop two archetypes for new last mile delivery vehicles . Each archetype is studied for two different commercial vehicle dimensions: one for a medium size commercial vehicle, the other for a large size commercial vehicle. At first, the design guidelines are presented to define the vehicles constrains and charachteristics. The main parameters fixed are: the vehicles dimensions, the underframe structures, and the propulsion system: electric powertrain. After the definition of the design guidelines, the archetype models are designed with a CAD software. In this phase, the spaces occupied by the components are evaluated qualitatively.