Regulation. §175.15 does not permit self-renewing exclusive listing agreements.) 4. The price at which the property will be offered must be set forth. Net.A copy of the property condition disclosure statement containing the signatures of both seller and buyer shall be attached to the real estate purchase contract. Florida Realtors has pre-approved and standardized a few different formats of the listing agreement that we can go ahead and use both for sale. A listing agreement is not an enforceable contract unless it contains: a. The street address of the property b. Contract Formation: A listing agreement is a contract for services. It is not required to be in writing in order for it to be enforceable. An extender clause protects the original real estate listing agent from losing their commission if the property sells after the listing agreement ends. Many include a renewal clause, which provides an option to extend the listing period if both parties agree.