Which of the following is NOT required for a valid real estate listing in Pennsylvania?

In Pennsylvania, a valid real estate listing does not require a signed contract from more than one realtor. Typically, listings are established through agreements between a property owner and an individual licensed real estate agent or broker. This means that the property can be listed exclusively with one realtor, allowing them to represent the owner in the real estate transaction.

The other elements are essential because they ensure the validity and enforceability of the real estate listing. Written consent from the property owner is fundamental, as it signifies the owner's approval for the property to be marketed. A listing agreement with a specified expiration date is also critical, setting a clear timeframe in which the realtor can operate, which protects both parties. Finally, a clear description of the property is necessary to inform potential buyers and facilitate the marketing process effectively.