If they are ready to go, after receiving the POF you will send the assignment agreement with a copy of the executed purchase agreement to the end buyer for signature.

However, if you're looking for payment reliability, I'd recommend a slightly different strategy that aligns well with consistent income.Partnering with non-profit organizations that support vulnerable populations, like the Veterans Affairs or groups assisting people with developmental disabilities, could be highly beneficial.

Review your docs to see exactly what the Lender's execution options are. 

@Vik John as @Matt Devincenzo pointed out, you should have asked MORE questions about how your PMC will execute their services BEFORE hiring them.We post all over BP that owners should take more time to ask more questions instead of just focusing on price and a good sales pitch!

But it would have to be a very special set of circumstances for me to ever let a buyer inspect one of my listings themselves without a fully executed contract and earnest money delivered to title.

. - How long have you been executing this strategy in this market? 

The fact you learned the children are the ones selling the property through a neighbor and this was not clear in the sales agreement suggests the proper authority might not have even existed to execute the agreement on behalf of the estate in the first place. 

However, some lenders can execute at 0-3 months of seasoning...

Keep money on hand.But, if you are well funded, know what you are doing, stick to the law, are proactive, are organized and honest and don't promise what you can't perform and don't "rent back" to the seller for any reason at all and don't borrow from or involve people who can't afford to lose their investment with you and don't put 3rd and 4th liens (borrowed money) on properties and don't buy from "vulnerable people", and you buy only in states that don't focus on suing for perceived wrongs, it won't be a problem, most of the time. ;-)

I would highly recommend that you speak with an attorney that does this on a regular basis to ensure you are protected and to ensure the loan docs are legally binding - the loan docs are of course key to ensure that you have documents you can execute on in the event of a default (mortgage, note, assignment of rents, personal guarantee, etc.).