A bunch of finishes to make it look pretty (drywall, paint, floor tile, cabinets, countertops, light fixtures, backsplash, sinks, faucets, bathtubs, etc)Not much else to it. 

Basically there's no layer underneath the ceramic roof tiles.

It's currently drywalled except the demo'd areas of wall and ceiling and the previous tub is removed. 1. framing and drywalling the closet and part of the ceiling2. installing a bathtub and either tile installation or prepping the walls for tile and I would DIY the tile itself3. tiling the floor4. install toilet and vanity5. prepping the kitchen floor for flooring install (will likely need to grind the concrete patches the old contractor shoddily performed +/- self-leveling concrete)Apologies for the long-winded post and I appreciate any advice!

The hardwood flooring on the main floor was refinished and new hardwood was added to areas that used to have old tile or carpeting.

I put $64K into it, new roof, upgraded to 200 amp electrical, rewired 100%, all new plumbing, beautiful original hardwood floors sanded and polyurethaned, tile in bathroom and laundry room.

I see a lot of new builders starting to switch to vinyl planks as they are saying it is more durable than wood (better water resistance) and easier to replace than tile (can change out a single plank if needed).

I would have installed drain tile in every  finished basement.

We only do tile because of this reason, the durability and cleanliness of tile.    

Building itself is around 160K, needs rehab, like new carpet, paint, windows, some tile and kitchens.

Should rent for $750-$800New Carpet, New tile, new paint, SS Fridge included.