If you have agreed to sell a property and carry the note, one of the provisions in your note language must be a Due on Sale clause.
Simply put, your buyer may not sell or in any way convey the property secured by the note to another without your consent. You are a lienholder. Just like a bank or mortgage lender, you have the right to foreclose if your buyer breaches this clause.
Protect yourself, take care of your business.
