The good news about turning a window into a door assuming it s wide enough is that the advanced carpentry required for altering a load bearing wall.
Turn a window into a french door.
Here is a recent response on cost to install a sliding glass door which is quite a bit easier than a french door but same general size.
So you ve just built a new deck on the back of your house and those once lovely double windows in the living room would now make a better door sliding glass or french out to that awesome deck.
These doors which are constructed with solid framing around a center of glass panes.
Also measure the window s location on the wall compared to where you will place your door.
Installing a french door between a living and dining space creates privacy without the loss of an open feeling for example.
Dan faires explains why it s better to let a professional install french doors.
Because you are almost certainly going to be increasing the width of the opening and very likely raising and lengthening the support header over the window as well you are going to to be above the cost in the referenced comments probably in the 2000.