Here is a collection of 37 Sci Fi Buildings I've made over the last couple of years. Some of them are simple but most have had careful thought into how they were made. Mainly for medium to distance shots unless you want to further modify them. No uvs and no materials. It includes multiple skyscrapers, towers, and low dwellers. A few of the buildings (about five) have imperfect meshes and will be needed to edited for better texturing.
Update: I modified a the buildings that needed further edting so the meshes should come out better, they were simplified. These were only small details so if you wish to use these for up close shots you may add or take away from the buildings, but still not resold. 1 user
OBJ (OBJ, filesize: 102 MB), BLEND (Blender, filesize: 173 MB), FBX (Autodesk FBX, filesize: 33.3 MB)