Cash on Cash Return

[Anthony Parisi]

I noticed when running the rental calculator that the Cash on Cash return increases in out years if the analysis calls for rent increases and property appreciation. I have also read about investor guidelines seeking COC returns of 10% or more. I am wondering at what time period the COC is measured and if the initial COC is below 10% but grows to 15% or 20% or more within 3-5 years is that an acceptable return for a buy and hold investor?

Thanks for your replies.