What aspects of a rehab actually increase an appraisal?

[Michael Mackney]

Hey guys, I currently have one duplex for a few months now, so I'm still relatively new. I am thinking of rehabbing my property soon which would include mostly cosmetic touches (paint, new floors, touch up the bathrooms, etc) to get it in line with market rent. 

A question I have is, will these cosmetic touches increase the appraisal value of the home if I ever wanted to refinance or pull out some line of credit? Or does it simply just give it more curb appeal for other buyers/renters? 

Let me know, thanks!