How do you find at market rental price?

[Victoria Radcliff]

I am trying to learn how to know to look for solid rental numbers that you can rent for and not under or overcharge. Zillow estimates and it sounds like some people look at it what is for rent in the area but no two houses are ever the same. How do you go about finding your rent number for your calculations?

I personally am doing rent by room method. In my mind I think $600 a room make sense but I don't have any reason to think that is a good number.