What qualifies as a bathroom?

[Shane Johnson]

My house right now is considered 2 Bedroom, 1 BA , However, in the basement, I have a toilet, shower and utility basin sink all plumbed in.

The shower is what we call in the midwest, a "farmhouse" shower. It is a basic shower head mounted on the concrete foundation, with a floor drain. Right next to that is a two basin cast utility sink, and next to that, a toilet. So what do I have to do to get this qualified as a bathroom? Just throw up some walls and a door? A friend mentioned I may need flooring down as well.

Any input is appreciated. I am looking at finishing my full attic, and doing anything else I can do, out of pocket, to get this thing considered a 3/1.5 or 3/2 , in order to get the highest appraisal possible, and therefore result in the largest HELOC I can get. Just making all the plans right now, and waiting for a few pending comps to close. Thanks in advance!