The dimension detail of the 40’X18’ first floor house plan AutoCAD drawing is given in this file. This is G+ 1 house building. On this first floor, pergola, family room, gym, utility area, master bedroom with the attached toilet, kid’s room with the attached toilet, guest room with the attached toilet, sit out, and passage is available. For more details download the AutoCAD drawing file from our website. Thank you for downloading the AutoCAD drawing file from our website.