An acceleration clause in a mortgage or trust deed stipulates that the entire debt is due immediately, if the borrower defaults under the terms of the contract. Inside this article, we'll cover contract validity, contract clauses, the different types of real estate contracts, and more.A license holder who adds these terms to the contract in any manner, including drafting an escalation clause, is engaged in the unauthorized practice of law. Inclusions and exclusion clauses outlines what will be included with the property and what will not stay. What are the essential elements of a Real Estate Contract? If you are obtaining the forms for possible use in a real estate transaction, you should contact a real estate license holder or an attorney for assistance. Amendments—licensees in many states are required to fill out amendment forms to change the language in either the listing contract or the offer to purchase. These four primary clauses are an acceleration clause, a dueonsale clause, a prepayment penalty clause and a release clause. Habendum clauses appear in real estate contracts. If you are looking for a simple way to complete the Texas sales contract feel free to sign up for our free Texas real estate software here.