Abstract: A building structure formed from transportable prefabricated panel frame section is disclosed. The building structure includes wall and/or floor and/or roof frames. Each wall frame is formed from a plurality of similar wall panel frame sections having frame side members. The wall panel frame sections are arranged in the wall frame with the frame side members of adjacent wall panel frame sections spaced apart. A joining member is located between adjacent frame side members and rigidly fastens the frame side members to one another. Each joining member extends vertically beyond the side frame members for interconnecting the side frame members therebelow to a floor frame and/or a roof frame and/or another wall frame thereabove.