Not unlike bandit signs, personal property signs will direct interested buyers to your own contact information.However, in addition to providing prospective buyers with a way to contact you, personal property signs are blatant in their attempts to sell.

Quote from @Yemisi Dinkins: As a property owner, I would never sign a Master Lease because I would give up control of the property so someone else could profit from it.

Were these signed contracts that blew up at the closing table, or just offers that you thought were going to stick and never did?

One experienced investor said to me that if it looks like a different LLC has owned a home every two years it's a bad sign that the property is being passed around  from investor to investor.

My mentor did say that he has purchased them before and had the owner/ paid the owner to sign something that stated the owner did not want the property back.

They signed a 3 year contract and have an excellent rental history. 

I'd tell them that they signed the sales contract and rent is always paid in advance, so they are out of luck. 

I would review your PM agreement you signed to see all the terms and conditions you agreed to and how the money flows and if you are required to have an account with them with a min dollar amount for emergency repairs (usually $500-1000).

We only had an agreement over text of what they would pay and no actual agreement was signed. 

@Ben Azubuike it's technically too late to add anything else if you've already signed a purchase contract.You can try to negotiate with the seller for review of:LeaseRent LedgerTenant approval criteriaAt closing you also want acceptable copies of tenant's: DL, SSN, paystub, bank statement, phone & email.