Well done, it looks clean and easy to use. As a building professional, I think this is only useful for understanding construction, I mean the floor plan. It will be much better if you could create a Revit plugin
Thanks for the feedback. I understand your point of view on revit but this solution is needed since it allows layman to have a good understanding of their house project before they commit. Users will come to you professionals with solid demands and floorplans that helps both parties converge on a professional solution without too much iteration.