Are here any trellis sites where on earth you can formulate your own house floor plans?
Answers: I found a site. Just click on "Try it".
Good luck.
http://www.floorplanner.com/help/...
google in home plans and jump from there
I am not sure something like a website but you can go to best buy or a store approaching that and buy a cd-rom for you computer called house suites that you can build the hole house from the ground up.
Check out Google Sketchup at http://sketchup.google.com/. Depending on how much you want to do yourself and how exact you are, this could be what you want.
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