This product is a kit only in that it contains all the materials necessary to build 2 structures. The doors and windows are cast metal--everything else is stock modeling wood. You must cut every piece to size according to the instructions. It is paramount that the 1/16 X 1/16 framing pieces be IDENTICAL in length. After cutting your pieces, push them together against a straight edge, then use a file to make them even. Uneven pieces will make fitting the walls together impossible! The gabled end walls will be the most challenging. TIP: Judge which of the 2 end wall frames looks the best and trace it on the back of the end wall siding. Cut it out and trace that piece to create an identical end wall siding piece. Make your second end wall frame fit that piece and you will have 2 identical end walls which will allow your roof to fit evenly. Once you have mastered these simple techniques, you can build structures on you own very cheaply.