How to calculate value add on a multi family property

[Justin Westmoreland]

I am new to BP and my goal is to buy value add properties with at least 16 units or more. How do you calculate the cost per unit, what are some things that you look to improve in a value add property and how do you know if it will be worth it or not? I'm not looking to do a total rehab of the properties I just want to add some simple things to increase the value if thats possible. Thanks!