Found a couple of things for you mate, though not sure on the overall use.
A lot of what you have so far is correct, such as Pavlovs house, rodimstev's HQ (I do have the name NKVD HQ in one of the books, though I think it is the same place) the bank, beer factory etc all seem to be correct. Even the books I have mention street names, but nothing about the buildings, which when you consider the battle was fought from building to building there would be more.
Sadly you seem to be correct. as much as the battle is well written about, very little pays any actual attention to the buildings, their names and the layout.
I did find the following maps. thouh you may already have them yourself. http://www.stalingrad.net/maps/stalingrad_map_5a.htmhttp://redarmysoldier.info/attachments/Image/best.jpghttps://chindits.files.wordpress.com/2011/05/stalingrad-bev.jpghttps://chindits.wordpress.com/2011/06/08/stalingrad/
The last is a series of maps.
Edited 3/6/2015 00:23:35