Buffy Winkenwerder says...
Here are links that will give you ideas using actual plans and also software available and just some good ideas. Hope this helps. Good luck with your project!
http://www.splitlevel.net/addition-subtr…
http://www.housingzone.com/giants/articl…
http://www.mindcapers.com/remodel/
http://ideas.reliableremodeler.com/Artic…
http://www.northlightarchitects.com/port…
http://hometalk.homedesignersoftware.com…
Posted on September 12, 2010