Bill,
This may not be exactly what you are looking for. But in Virginia when you sign a valid contract to purchase real estate you become the "Contract Owner" of that real estate. As such, you can sell the contract to someone else, offer the property for sale, and, unless prohibited by the terms of the contract, you can put a sign in the yard. It works very similar to a land contract. I have seen people seel their contracts, or, in many cases, bring their buyer to the closing table and as soon as the deed is signed and accepted by the new owner, hold another closing for the new buyer at the same closing table. Just for referrence, we do not do a closing in escrow. We still have a formal closing at a closing table. There are ways to do that without all parties being present such as when they have a lawyer or closing agent represent them at closing. Our attorneys do hande the deed to the purchaser to show acceptance, then take it back so it can be recorded. When that happens(acceptance), the property is sold.
I see many contract where the seller is not the owner of public record. What is going on is what I have described. I ask for and get a copy of a legal document that shows me they have a right to seel it. Otherwise I check NO for owner of public record.