Month to Month too risky?

[Brian Tisler]

Hi everyone- I am a new investor and have an appointment to look at an upper/lower duplex.  The numbers appear to workout at there current rent, but both of the current tenants are currently month to month.  Is it too risky to purchase a property where both tenants are month to month?  Can I require they sign a new 12-month lease or they have to move so I can get a tenant in that will sign a 12-month lease or do I have to let them continue on a month to month basis since that is what they were doing?

Thank you in advance for any/all advice!