Somehow I have managed to mess up the corner of wall of my house. The left side of the image shows what it currently looks like, and the right side shows more or less what it should look like.
I tried a simple "Grid Fill", but I guess that is not what I need.
Could somebody tell me how he would fix this? I was thinking that I could perhaps use the remaining 2 faces on the bottom of the corner, but I am not sure.