Which of the following is considered a non-material fact?

A non-material fact is defined as information that does not significantly affect the value or desirability of a property in the eyes of potential buyers. In this context, the cause of death on the property—while it may be of concern to some individuals—generally does not have a direct impact on the condition or functionality of the property itself.

This distinction is crucial in real estate, as certain disclosures are required legally, while others may be considered more personal or subjective. The other options provided, such as the purchase price, zoning laws, and the condition of the roof, are all material facts. They directly influence a buyer's decision-making process by impacting financial aspects, usage rights, and physical integrity of the property.

Therefore, the cause of death is categorized as a non-material fact because it does not inherently involve the property’s physical condition or legal standing, and it may not be relevant to all buyers in the market.