we did - but many many years ago so couldn't give you a cost (so not sure this will help
)
Our terraced house doesn't have a through hall, & access from the back room into the kitchen was through a door just in front of the understairs cupboard door & then round the corner. As the kitchen also had a door in the furthest corner, into an attached garage, & another door at the other nearer corner out to the back yard, it had way too many doors!
We now have a wide (too wide, meant to get doors, never did
) opening straight into the kitchen; the understairs cupboard is now larger by what was the space we went into the kitchen through; what was the door into the kitchen is now the door into the larger understairs cupboard; the door to the back yard was bricked up & what was the window in the back room overlooking the yard is now french windows. Garage was demolished & that corner also bricked up.
It works pretty well in the kitchen as all 4 corners are now available for cupboards. I know some local houses with similar set-up have french windows at far end of kitchen, instead of cupboards across, & I would quite like that too.
It was a messy job, & required a RSJ across the too-wide opening, but we were having other work done at the same time, so a) the mess was relatively insignificant & b) I don't know what the cost was.
Could post pics if it would help with visualising (if it's anything like your set-up)