What type of estimate can I get to remove 10ft. of dry wall from the basement stairwell in order to widen it?

<p>I need to widen stairwell and door frame, the wall goes down the stairs @ 10ft. and is about 8ft. at the highest point. Not sure about door frame details. I need to be able to get my washer/dreyer down into the basement. I need to go from 20 in. to at least 22 in.</p>