I used to do all those houses for Childrens Hospital downtown. Go in, measure. Complete redesign based on what was there ect..
I don't do that anymore since I do new homes now, but the firm I was at might still do similar work. Keiser Design Group over in Gahanna.
Another guy who I used to do these jobs with went out on his own (and may still do them for Childrens). Scott Baker at SBA Studios.
If you don't want blueprints its pointless. Are your subs just going to pull permits?
From my experience there is only so many ways to lay these things out depending on how many bedroom you want ect. Only when you convert those old duplexes to 4000sf single family do you really get into tons of design options.