Immedialty. However, Denise, in RI you listing agreement wil contain a provision that requires you to pay a commission on any sale to a prospective customer who was developed during the Listing period for specific number of days after the expiration of the agreement Simply look at your contract as it was a blank filled in about midway down the first page. However, if you list with another realtor this provision doesn't apply because it is really designed to prevent a seller from accepting the buyer and reneging on the agreeement with the original listng realtor, simply to avoid paying the commision owed, but it does not apply where a seller lists with a new realtor at the expiration of the agreement. So if you are behaving ethically, you can FSBO immediatly with no worries. However, FSBO's usually net less money in their pocket than those who commit to the help of a professional and all the great marketing we realtors have systemized. Odds are, Realtors as a group are going to get you the best price because we have a great system. FSBOS save commission but they can seldom be sure they got the best price or net profit on thier home, and odds are, they don't. even if you were dissatisfied with the indivisual efforts of a particular realtor, a litte extra effort in hirig the next one should provide an outstanding result. There are so many good agents out there, but the system is even more important.