I'm considering new floors, fixtures, countertops, windows, removing popcorn ceilings, etcetera.

Some of the materials we choose and asked him to pick up (such as flooring) he replaced with low quality materials, I assume to keep more of our money for himself. 

8) Is there a 3-D Tour or floor plan layout?

Second rental property as a duplex.Converted SFR, first floor 4br and 1 bath ($665/month).

What is the flooring material?

As mentioned before, stairs were broken, floors were moldy, etc. 

Plumbing fixtures, light fixtures, flooring, cabinetry - everything you are using for the project should be found on these design boards.

Some more than others. two units had wood floors that we kept.

It all started with removing some interior walls and changing the floor plan, removing a chimney, adding a bedroom and bathroom, installing patio door to the backyard, and completely renovating every other interior element What was the outcome?

We plan on replacing the flooring and possibly new kitchen countertops.