A clause dictates the conditions under which the contract is legally enforceable and determines the terms of the contract. Contracts often contain boilerplate clauses or standard clauses found across most contracts. These standard clauses do not require a lot of negotiation. Included is a Sample Default Clauses for a Contract for Real Property. A default clause is a provision in a legal contract that states what will happen if either party in a contract defaults or fails to hold up their end of the agreement. These clauses can be found in any type of contract including loan agreements, lease agreements, and property agreements.