I have a unfinished basement that is about 400 square feet. how much would I expect to pay for this to be framed out and drywall'd(including tape and mudding)
I live in philly
Prices vary greatly depending on where you live which is related to cost of living, taxes, material cost, etc. I would just try to get four or five separate quotes to get a ballpark of what you'll be paying. The price also varies widely depending on what you want (how many rooms, lighting, etc).
I would draw up a plan of generally what you think you want and then go get some quotes.