Back in 2003 I spent about $30,000 turning the attic of my 100 year old house into a beautiful studio apartment. I found these pictures while browsing my computer today.
Most of the framing and insulation was done by a contractor. I helped my uncle sheetrock the entire place. My dad and I did the painting, built the two closets, installed custom kitchen counters, and did some of the plumbing. I installed the lights, the hardwood floor, and the shower.
I lived in this studio for a few years until I moved into the partially renovated basement (where I happened to install the exact same shower). This attic studio is now rented for $750 a month.