COCROI Calculation for Rentals

[Jeff Studer]

For those who buy, rehab and rent, do you factor in your 'non fixed monthly costs' into the equation to determine your projected COCROI?  I guess by, non fixed monthly costs, I mean:

- vacancy fund (do you factor that the tenants with turn over every year or every 2 years?)

- cap ex fund

- misc repair/maintenance fund 

Thank you

Jeff