Adding Details to the Buildings

I created a 12 sided cylinder and lined it up with the back beveled corner of my back left building. I then duplicated the cylinder, dragged the duplicate below the first cylinder and scaled it outward and repeated the process one more time.

I added some resolution to the front right building and deleted the back and bottom faces of the building. I extruded the faces in the middle of the building that were created when I added resolution. I then extruded the thinner faces again. I added edges on the side of the building so I would be able to tell where to put my doors and windows. I selected the faces of the windows and extruded them backwards slightly, I then extruded that face again, this time just scaling it in and I extruded it one more time backwards. I then extracted the window pane faces. I grabbed the two extracted panes and moved them forward slightly and scaled them up slightly. I extruded the door faces to create the door frame. I extruded the door face inward slightly and I then extruded the front faces of the door frame out slightly.

I added some edges to the bottom of the building and selected the faces at the very bottom of the building and extruded them out slightly. I grabbed the edge in the middle of the door, moved it down slightly and extruded it slightly to form the kick plate of the door. I added some near the top of the door where I want a window to be. I extruded the window face inward, did another extrusion and scaled it inward and then extruded again backwards. I then extracted the window pane and moved it so that it intersected with the window frame. I selected a face right below the window and extruded it out to create a sill.

I duplicated the door knob plate on the other front building to use on the new door. I created a sphere and rotated it so that the pole pointed towards the door. I selected some faces starting from the middle of the pole closest to the door and extruded them out. I extruded it a few more times to make where the knob fits into the door. I added two vertical edges to the middle of the plate and selected a middle face and extruded it a few times to make a slot for a keyhole. I moved the pivot point to the right side of the door and rotated the door so it looked like it had swung open.