Could there be a 3D modeller that can generate a 3D model from a blueprint or reference image where the blueprint shows at least two different perspectives of the object, so the modeller uses some technique like starting with a rough shaped mesh and projecting the blueprint background co-ordinated to 3d co-ordinates and shaping the mesh to the blueprint shape like a dough ? Or starting with a flat shape and extruding while shaping it to the blueprint's shape? I could have created a Blender script for this if I had time.
I myself do exactly this sort of thing for clients as an architectural designer, 3D modeler and renderer quite quickly and efficiently, in a toolset I've developed over the years (using either ArchiCAD or modo depending upon client and project needs) but based on the huge variability of plans I see, I'd really have trouble imagining a fully-automated process or tool that would have the range of responses necessary to work in the real-world... even within a single firm, there tends to be a lot of deviation from the firm's published CAD or BIM standards, and though many US firms will tell you they use or follow the National CAD Standards very few do in fact follow them - it'd be more true to say they use them as a baseline for their own adapted version specific to their client-base, use-case and project mix.
As a result, if you wrote a scripted system to derive walls from lines of type X on layer Y - it'd fail in 80% of files imported.
I use the client-provided CAD as a reference and snapping base - and if I only get scanned images of the plans, I can effectively do the same.