The Gomos System results from a business R&D project and consists of a concrete modular system which presents an accurate and efficient answer to the contemporary need for simplify and accelerate the building processes. It is an evolutionary system, in which each module leaves the factory completely ready, including all interior and exterior finishes, insulations, window frames, water and electricity installation and also fixed furniture pieces. The building assembly on site is done in a few days, just by joining these modules. The building process can be summarized in four phases: structure production, cladding and hardware, transportation and assemblage.