What kind of contract describes the property, states the amount of commission to be paid, states an expiration date, and is signed by the seller?

An offer to purchase is a proposal made by a buyer to acquire a property, outlining the terms and conditions of the offer. However, it does not detail the commission to be paid or the expiration date associated with the seller's authorization to market the property, making it fundamentally different from a listing contract.

A contract to sell is a legal agreement that outlines the terms for the sale of a property, but it typically occurs after an offer has been accepted. This contract generally involves the buyer and seller agreeing on the sale conditions rather than detailing commission and marketing authorization, which are specific to listing contracts.

An option agreement grants a potential buyer the right to purchase a property within a specified timeframe at a predetermined price. While it may include expiration dates, it does not pertain to the commission details or the seller's authorization for a real estate agent to sell the property, thus lacking the necessary components to qualify as a listing contract.