This has all been cut out with a hammer and chisel as to use a power cutting disk would create to much dust.
This picture doesn't show the height from the floor but i am considering if i can make a window seat even though the seat would be near to the stairs.
I have been known to do a good hard days work. Today i started early to get my window in. Cutting through the final part of the outside wall was harder thank i expected but i used my power cutter. Great idea until you are blinded by the amount of dust. Tomorrow i will finish the last of the facing of around the window frame. Next i will measure up for the window seat i want to finish done. For now because i have to take the glass out i have secured the glass with strips of wood.