Great 
Basically today I started fixing everything.
I had some problems with meshes that they weren’t lining up propertly. Now it does it so I wont have to overlap anything of the walls. Also I did again the door model and change almos all the uv maps (also lighmap uvs)
I’m going by sections, I’ll say that the first section is already fixed:
I still need to change the planes (glasses)
- Assets from the first section, modified the geometry to decrease polycount
2. Back part of the assets, still need use the capped geometry instead of the planes (it will increase the polycount though)
3. Before the UV maps were mixed (like one window with some stairs). Now I’m trying to do better UV maps (with lightmap uvs in the second channel) and dont mix props with walls/windows
Channel 1
Channel 2
4. New door, I still need to make the high poly version but this is already mapped and I could save some geometry welding vertex but I think just this time its ok
5. Now this section is looking better, everything snaps perfectly.
I will do the other 2 sections in 24 hours
Thanks!! 