A mobile multi-functional shelter unit, for use as a general working area or for storing and maintaining heavy machinery. The mobile multi-functional shelter unit includes a central structure that has a deployed state and a non-deployed state as well as means for translating from the deployed state to the non-deployed state. The central structure has a base section, a central floor mounted on top of the base section, track means for raising a vehicle from a ground surface onto and off of the central floor. The central structure supports a raisable roof assembly and a lateral pullout assembly.