I have a excisting house wich i want to increase. Need professional 2d drawing to apply to the state. I know how i want it and it should be a fairly easy task.. i have the original drawings and can also supply an easy sketchup model of how i want it. I dont know if it need to be drawned in autocad but im sure you do. Dont know wich programs to be used. Also interested in 3d drawing of the house in sketchup.