In present days, enhancing of population taking place day by day and due to excess population, enhancing of traffic is also taking place. Thecurrent construction market offers many construction methods and solutions. Some of the methods take into consideration numerous factors including use of less energy and material, less time and construction cost, resistance against earthquake and wind, more accuracy and so forth. During the past years there have been many developments in lightweight construction. In new methods, an attempt is made to use the precast components so as increasing execution speed and decreasing construction time. The voided slab construction refers to modern technologies with favorablefeatures from economic, architectural and structural point of view. The aim of the study is focused on comparison of several variants of lightweight slab solutions from construction cost point ofview.