I got as many blueprints as I could of past renovations (my home is from 1938 and has seen major renovations multiple times). This was useful to get an idea of e.g. exterior wall thickness and to have some reference to validate measurements against.
I got a big A2 piece of paper to make a precise drawing at about 1:25 scale of the major walls. When dealing with things like wall thickness, I found that much easier than trying to enter my measurements directly in SweetHome3D, especially because I had never used it before, and the workflow takes some time getting used to.
I got a big A2 piece of paper to make a precise drawing at about 1:25 scale of the major walls. When dealing with things like wall thickness, I found that much easier than trying to enter my measurements directly in SweetHome3D, especially because I had never used it before, and the workflow takes some time getting used to.