The Kansas Residential Real Estate Purchase Agreement describes the property that transfers the property, the amount of money to be paid to the seller, how the buyer pays the compensation, and any other details that clarify the rights and obligations of both parties. Real estate purchase contracts usually include promises and provisions guaranteeing the condition of a property. In some states, sellers must provide additional documents that guarantee the condition of the property. While other states require the seller to reveal a certain type of problem on the ground – for example. B a clerical error. In Kansas, in addition to the sales contract, you must complete the following documents: Radon Disclosure Statement (§ 58-3078a) – All sales contracts must contain a radon hazard statement.