Yes, you can withdraw an offer on a house at any time before purchase contracts have been signed. There are 3 must-have conditions before you can "undo," or rescind, a contract under NY law, explains New York breach of contract lawyer Jonathan Cooper.Learn about contract laws and cancellation laws from the NYC Bar Legal Referral Service. Find an experienced attorney in New York. If you decide to pull out at the last minute, there are no penalties. The court has placed the most commonly used forms on line as a resource. Please be advised that the forms detailed below are intended to be a guide. If the attorney review period hasn't expired, seller or buyer can get their attorney to terminate the contract. The offeror may withdraw the offer with a clear expression. The offeror may take an action that contradicts the offer and make that known to the offeree.