If I'm following the logic, you would like to draw on an image, with real world coordinates relative to the image borders.
Suppose you have an image with the exact layout lot, with the lower-left corner as the real world coordinate (0, 0).
1, insert the image using the origin (0,0) as the insertion point;
2, scale: using (0,0) as the center, and scaling factors x/y, to scale the image upper-right corner to the real world lot width/height;
3, set the image order to back;
4, now, it's straightforward to draw with real world coordinates on the top of the image.
rybasg wrote
OK, that is making SOME sense. I think what I need to do is set the DRAWING size to fit my property (in feet), and then scale it to ANSI E for printing. But I can't find where to set the drawing size. Part of the problem is that I have a .jpg picture file with the exact layout of my lot with the house on it, and I want to import that into the drawing as a separate layer (I know how to do that) so I can trace over it and continue my landscape design. However, I can't figure out how to make that .jpg the correct size on the drawing so that my dimensions are correct.