Selling a house involves more than just the purchase agreement. Buyers need to perform due diligence, such as a survey or home inspection, while sellers must give access and respond promptly to requests. Sellers must also coordinate with the title company to clear requirements to prepare for closing, which can reveal obligations they may have forgotten about, such as a mortgage or trust. These requirements can be as simple as getting a payoff from a bank, but there may be breaks in the chain of title or former owners with interests to address. It's also important for sellers to prepare to move out after closing.