After recently leveling our house on a new foundation, the solid wood front door no longer fits the frame. Over the years, it apparently has been planed down and now sits with an angled gap at the top and bottom, with something short of a 1" gap when comparing the left side vs. the right side. Our designer tells us that in Europe, it's common to see solid wood doors that have rotted out near the bottom, patched with a darker wood at the bottom to avoid replacing the whole door. Sometimes in a large sawtooth pattern, though I'd prefer a straight cut. I'm not opposed to this solution, but am having trouble finding any reference to door repairs similar to this on the web. Is this as simple as a tongue and groove repair, so something more complicated? Anybody have any reference links they can share that might provide guidance?

I have a doorwall on an upstairs bedroom wall that leads to an old balcony that will be torn down. I have no windows in this master bedroom and wondered if a contractor could remove the doorwall and install windows. Possible or not???? Thanks.