Buying a House and 'Renting' a Room to a Roommate

[iomaxx]

i'm currently renting and will be buying a house soon. my roommate currently will be moving with me and we have agreed upon him paying me a set amount and also splitting utilities, etc. i've seen on this forum that this would likely be a ''lodger tenant''. i want to get this in writing so he can't just flake out on me and decide to move out without notice, etc.
My question is if what do i need to do to make any agreement i type up legally binding? should we go sign it and get it notarized at a bank or something? do we only need to type something up and agree to it? do i need to submit anything with the state, etc. if he'll be paying me to live there? thanks in advance for the help. this is in the state of wisconsin.

[Mr. Knowitall]

You can probably find form rental agreements at a local book store or office supply shop. There are a number of sites that sell them for download, although I haven't tried any of them.