Hi, Myself Pragya.
I have been working as professional Architect and Interior designer for last 5 years.
I am quite handy with Autocad, 3D modelling software like, Sketch up , Revit, Lumion, 3DS Max and Solidworks.
I provide all sorts of architectural services, e.g. 2D Site plan, 2D CAD floor plans, elevation, sections, 3D modeling using sketchup and realistic rendering using VRAY, Lumion.
I have gone through your requirement and the sample Sketchup file attached. i can surely help you create a neat sketchup model of house by using 2D DWG plans. I will make sure to keep things in groups and components, so that you can easily edit or remove the model when need comes.
I have earlier worked on many such house modeling whose samples I can share with you.
Warm Regards