Detailed information about canceling listing agreements and contracts, calculating time periods and other common real estate scenarios. Modification to Listing Agreement, This form is for use with any Florida Realtors listing agreement or Florida Realtors Exclusive Right to Lease Agreement.Florida REALTORS® makes no representation as to the legal validity or adequacy of any provision of this form in any specific transaction. This standardized form. Below are seven of the most important issues that the seller can negotiate in the broker's listing agreement. Exclusive Right to Lease - Commercial (ERLC-1). This form is a listing agreement for commercial property in which the seller grants to the listing broker the. Below are seven of the most important issues that the seller can negotiate in the broker's listing agreement. Sales contract for the Property. 58. (g) Act as a transaction broker of Seller. 59.