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

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...

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.

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

So, you while many unexpected repairs are not avoidable, if you know where the flexibilities in your project are you can manage the project to completion by making these sorts of decisions along the way. 

Actually, above that I'd love to see an opt-out clause if X of the raise goal is not achieved before closing.One may try to say it's a bait-and-switch of sorts, on risk levels, to close w/o the full funds IF the chances of quickly closing out the remaining raise are not realistic.

Assuming since you're asking, you're not interested in some sort of traditional financing?

Sort of.