>I need a tool to draw a house plan (CAD like) in WPF. Is there some third party tool over here?
>
>Thanks

Are you trying to just display a drawing? If so, do you have Adobe Illustrator? That's what I'm using for most of my XAML drawing. Here's the Exporter:

http://www.mikeswanson.com/xamlexport/

Other tools are here:

http://blogs.msdn.com/mswanson/articles/WPFToolsAndControls.aspx

Or... are you trying to create a CAD like program in WPF? (Wouldn't be too hard the drawing primitives are pretty easy to work with.)