Adding 3/4 tub to a finished attic - approx cost? I am buying a house with a finished attic. Wiring,...

I am buying a house with a finished attic. Wiring, drywall, insulation, etc. already up nearby. I would ideally like to affix a 3/4 bath. Do not own rough in for plumbing at hand, so that would have to be added. Any impression on how much (approx) this will cost me to add a hip bath up there, given approx 10-15 foot to tap into bathroom on the floor below it? I am within the mid-atlantic region.

Thanks
Answers:    Adding a bath is a big expense. Believe me, you may own all the electrical system in, but fleck my words..something will need to be added. Putting within plumbing is another area that you will run into problems. You can't simply tap into the bathroom below. You may obligation extra piping to get to the leading. Cost could run from $5,000 - $10,000. Find more than one contractor and get quotes.
$79,000.00