A prefabricated panelization system having a floor or roof component and a frame component. In particular, the floor or roof component includes a deck member, which can be made of deck sections, profiles, or panels. For example, the deck member can be made of continuous panels that cover the desired width and length of the floor or roof component without intermediate beams between supporting elements. Alternatively, the deck members can be made of individual or panelized sections that are combined in juxtaposed relation to form the desired width and length. The frame component includes opposing horizontal support channels that are attached to opposing columns, respectfully.