I use CAD packages also. AutoCad, UG(NX), SolidWorks. They are
good for engineering stuff.
When you want something quick for home remodeling use anything
other than eng sw... I have been using an old version of 3D Home
Architect® Deluxe 4.0. You could probably get find it in a
garage sale... Works just fine for the my better half. She can
see and change anything quickly.

TP