@co_guy said "I've done a bit of research and am not finding clear answers".
That's the nature of the great American tax code. You're gonna get opinions here rather than a clear answer.
I'm of the opinion that the 10 items you listed constitute one improvement project and can be added to your cost basis.
Since the home will be sold at a gain, the 2nd question, you didn't ask is academic: did you sell a flip house or a a 2nd home. It would only make a difference if sold at a loss.
