A listing agreement is a legally binding contract between a homeowner and the real estate agent or broker who will be listing the property for sale. All subcontractor agreements must include a contractual provision requiring that the sub-contractor register in VSS.Learn how Buyer Broker Agreements are intended to be used and what you need to mention directly within the agreements. A corporate governance agreement is a legally binding contract that governs the working relationship between a company and its shareholders. All subcontractor agreements must include a contractual provision requiring that the subconsultant register in VSS.