cost to replace staircase monstrosity with straight staircase

[Janet Lancaster]

Hello

What is the approximate cost for a professional to demo an existing turned staircase made of wood and put in a straight staircase against an existing wall? The existing doorway on  the  left needs to be closed off. There is another  access point to that hallway around the corner. Assume all will  be to code otherwise.  Thank you!

[Alfred Edmonds]

Not sure why the proposed staircase would be less safe? I agree that the current one is ugly and other than the doorway to the left, have no idea why anyone would build it that way. As long as it's not going over 12' vertical, it can be a straight run. The cost would be 100% dependent on finish. Any carpenter worth anything can build it.