The price we were quoted was 39,500 to build a 2nd master suite up (downstairs as well.) We closed 5 months ago and just noticed that the doors in the upstairs master are 6'8" doors and not the 8' doors like the downstairs - which alters the dramatic look/feel of rooms and one of the reasons we bought the house to begin with. I emailed the builder who directed me to the sales manager - his reply was: "I am sorry if that was a detail that you intended to have, but the time for noticing that oversight was before you moved into the home."
I not only intended to have that detail - he sold me that detail and I paid for it. He did not specifically convey that detail to builder so builder went with normal size 6'8" doors upstairs. Because I didn't catch their error they don't have to fix it?