Hello. I am planning on getting a window fitted in a space I use for an office at the rear of my house. The builder said I need to get building control permission first of all. I have absolutely no idea how this would work so I am going to contact them first thing. I was just wondering if you would see any problems with doing this however or anything I should expect? I have attached a photo of the window I plan on getting and where it will go. Thanks in advance.