Which of the following is not required to be in writing according to Wisconsin license law?

In Wisconsin, the requirement for certain real estate agreements to be in writing is primarily aimed at ensuring clarity and legal enforceability. A six-month lease is not required to be in writing under Wisconsin law, as oral leases for residential properties of less than one year are generally valid and enforceable. While it is always recommended to have leases in writing for clarity and proof, the law does allow for shorter leases to be made orally.

In contrast, listing agreements, buyer agency agreements, and purchase agreements are specifically mandated by Wisconsin law to be in writing. These documents are crucial in establishing clear terms and responsibilities among parties involved in real estate transactions, and written forms help provide legal protection and clarity. Adhering to this requirement aids in avoiding disputes and misunderstandings later on, further emphasizing the importance of formalizing these agreements in writing.