Neither tenant had a contract of any sort.

Does the notice have to be notarized or certified or can I simply email a DocuSign or sorts? 

Hey Chandra, applying part of the rent toward the purchase price motivates buyers by helping them build equity.

Right now, the renters do not fill out any sort of application, they move in as soon as they look at the unit and move out on a moments notice.

@Clare Cui my questioning starts with a couple easy short answer questions (a sort of "yes" set").

For example this place claims to be able to rent for $6,000, and with 25% down that would be a $4200 payment, so $1800 cash flow (not yet factoring any sort of maintenance and whatnot of course, so just the mortgage/rent diff):https://www.redfin.com/SC/Columbia/1921-Pickens-St-29201/hom...Or to a lesser extent this place at $400 cash flow:https://www.redfin.com/SC/Columbia/1035-Kinard-Ct-29201/home...

Beware of trusting people with a profit motive.

Did you ever get any sort of agreement template that you ended up using? 

Well they wont know it and to save money by not having a lawyer advise them .. boom they take title to all sorts of nasty crap.

I am very serious and motivated to buy and revive my city.