What the estate trustee role actually is
Being named executor in a will doesn't automatically give someone legal authority to act — in most cases, that authority is formally confirmed when the court issues a Certificate of Appointment of Estate Trustee, commonly referred to as probate. Until that happens, an executor's ability to complete a sale is limited, even if they can begin preparing for one.
Once appointed, the estate trustee has a fiduciary duty to the beneficiaries — meaning decisions about the house need to be made with their interests in mind and, ideally, with them informed along the way, not sprung on them at closing.
Where disputes tend to start, and how to head them off
Disagreements among beneficiaries about pricing, timing, or whether to sell at all are common and rarely about the house itself — they're usually about communication. An estate trustee who documents the reasoning behind a listing price, a chosen offer, or a decision to sell as-is versus list traditionally gives beneficiaries something concrete to respond to, which tends to prevent disputes rather than create them.
If disagreement is already serious, that's a conversation for an estates lawyer before it becomes a legal one — mediation and clear documentation are almost always cheaper and faster than a contested estate.