The first thing you will want to do is to download the free computer program 3D Home Architect. The link for this download is at the bottom of this page under Resources. It is easy to download the program. First, you will click on the link for "3D Home Architect," and that should take you right to the page with the free program. Next, you will click on the blue link that says "Download Now." Then, the download should begin right away. It should only take a few minutes before the program is ready to use.
After you have downloaded your 3D Home Architect program onto your computer, you can begin to design you rectangle house. You can see when you open your program that you can click on the "Wall" tool to build your walls. While you move the "Wall" tool around it will show you how long the wall are in feet and inches. This can help you to build your house to the right proportions. There are many tools in the 3D Home Architect program that you can use to build your home, such as the "Window" building tool, the "Roof" tool. You can even view you home in 3D.
After you have completed your rectangle house using the 3D Home Architect program, you can save your work to a disk and take the disk to any architect. This will allow a live architect to make usable schematics that can be stamped and approved to actually build you home. Some states and counties do not require an architect's stamp, but other states and counties do require one.