We have no legislation making it illegal to sell a contract you own like you guys have in some states.

Then he'll have to initiate foreclosure proceedings to enforce the lien within 2 years, at which point you can argue if he breached the contract.

Leaving them with a pamphlet on our we buy houses company and a breakdown of how much code enforcement charges to cut. 

That does not mean they are all enforceable in a court of law.

Eliminate all states that have punitive taxes or other legislation that make owning real estate difficult.Then we picked out of what was left. 

The house is currently unattended and boarded up due to law enforcement.

Prices are rising so that won't last forever, but it is there.Big difference - 1) The police respond and are active in enforcing laws to protect your tenants and homes2)  The schools are much better3)  The crime is MUCH lower  4)  You will be happier with your property manager5)  The homes will actually sell to end buyers, not just out of state investors.6)  People pay taxes and water bills in every city other then Detroit nearly all of the timeCan you make a HUGE return in Detroit! 

The law enforcement in my small town keep telling her she can’t do anything until he decides to come and get his stuff and return the keys.

Once you have confirmed that they don't, make the current owner/manager enforce it if they want the sale to go through.

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.