If they are VERY professional, they will have their processes in writing as verification that it is enforced equally and fairly by their entire staff.6.

I would like to write a contract to purchase the property contingent on approval to change the property's zoning (has to go to Board of Commissioners, takes about 60 days). 

If the old tenant is still getting mail at the old address, tell the tenants to write "return to sender" on the envelope and put it back in the mailbox.4.

So you would not have to write it into the purchase and sales contract, you could create a separate agreement that descibes the two week provision for 5 years for the seller and include it when you present the purchase offer.    

I've always wanted the freedom to travel the world spontaneously, and I think taking some business trips to my STR's all over the world would make for a great tax write off. 

The guy still needs a place to live so I'm thinking about writing a 3-5 year lease into the contract.

DIY you can write out all the terms and conditions on a yellow pad and both sign it.

@Esther Tama and others,   Yes Esther I've heard of local credit unions offering good terms on commercial/rental loans and not being DTI (fannie under writing).Update on my cash out refi progress;- finished 2 of the 3 REFIs I started with FinOfAm, they where the worst, most painful lender / underwriting I have ever done, including bank/fannie under writing.  4 months, FOUR months to close each of 2 loans. 

To be clear, when I use refer to "checkbook control" I am not referring to a Custodian account that I write checks against, I set up LLC's, that I manage, which are each 100% owned as assets within my xSDIRA accounts. 

Get it in writing.