Deposit the checkSometimes the banker will want a copy of the POA for their records, which we'll gladly provide.

I do not like this as obviously if a business account is only accumulating rent from 1 property, it wouldn't accrue the cash in each as quickly as it would if all of the rents were funneled into one account.. and it makes paying the bills a bit of a pain on each of the properties as I am having things done to the properties, lawn care, etc.. constantly has me making owner investment deposits into each to cover initial expenses associated with the properties.. etc. 

An STR will look every bit as good as it did when it started - because it has to.Not only that but it is much easier for property managers to get repairs reimbursed when a guest damages something as an STR as opposed to when a long term renter moves out and outside of the security deposit, good luck. 

You can even sweeten the pot by telling them they don't have to clean, and you will hand them their deposit on the day of move-out after a 10-minute inspection to verify there are no damages. 

If not, the contract can be terminated and you would get your deposit back.

If you are self employed you can also look at bank statement loans assuming you have a business with high deposits.

Have them direct deposit into a separate rental account if you can.

For instance here is a snippet I saw on crexi:Non-ContingentEarnest Money Deposit: Greater of $20,000 or 10% of the Purchase PriceMarketing Fee: 5% of the Winning Bid Amount, $20,000 minimum$10,000 Participation Deposit

Im tired of letting tenants bail out with unpaid rent and damages that exceed well past the deposit. 

The rehab funds are for completed work only so your parents would need to front the contractor like 15k let's say to get started and then they get their deposit back at the end of the project because they added 15k to the rehab funds with their deposit so 15k will be left over in the escrow account when job is done.