I've made new videos about how to model the inside of apartment based on CAD plan.
The tutorial ones are here
Doing this I managed to enhance the Line tool. For example "Force Closed" property has been added so that you could draw a closed shape just pressing SPACE like Arc tool without needing to place the cursor to the first point . And "Confirm" and "Cancel" buttons have been added. Moreover Axis snap has been improved to avoid other type of snapping.
All of these features is going to be included in UModeler this month.