This Diploma thesis deals with the solution of project documentation for the new Suzuki car showroom building. The proposed object is situated in region of Nitra in Topolcany district, located in suburb part of Topolcany town. The car showroom is designed as a building consisting from the car shop - showroom and the services for Suzuki automobiles. The car shop - showroom is designed as the operation for car sales and the administration part on the second floor. This part of the building is covered with warm flat roof. The second part of the object - Car service is a one-floor building covered with wood, truss purlin constructure in the shape of a saddle roof and in inclination of 9 degrees. The supporting construction of the building consist from cast-in-place reinforced concrete frame in the showroom part and from masonry system Ytong system in other parts of the building.