An Estoppel Certificate Clause is a legal document that is used to verify information about the parties involved in a transaction. It is typically used in commercial real estate transactions to ensure that all parties have the same understanding of the financial terms of the contract. The Estoppel Certificate Clause states that the parties agree to the validity of the contract and that they have no further claims or rights against each other. The clause also stipulates that the parties have no knowledge of any material facts that would affect the transaction. There are three types of Estoppel Certificate Clause: General Estoppel Certificate, Special Estoppel Certificate and Unilateral Estoppel Certificate. A General Estoppel Certificate applies to all parties in a transaction and is used to confirm the accuracy of the contract terms. A Special Estoppel Certificate is specific to one party and is used to verify a particular set of facts or information. A Unilateral Estoppel Certificate is used when one party wants to confirm the accuracy of their information without having to disclose any other information.