Your situation needs to explained further to get an answer. Is it a bankruptcy trustee, someone handling a family trust or what? Who is objecting to the sale? Why is it being sold?
When you write that you have a POA, are you referring to a Durable or health care proxy? If you have a durable power of attorney which authorizes you to engage in financial transactions, there may be a conflict with the provisions of the trust. You need to read the trust to verify that the trustee has this authority (which it typically does) as well as find out why the trustee is selling the house.
Are you the sole beneficiary, or are there other beneficiaries under the trust? Who are the "parties" to whom you refer?
Also, was your father ever the Settlor (maker of the Trust), with the trustee who is trying to sell the house as a Successor Trustee? And if so, under what conditions could the Successor Trustee take control of the assets? This is a very important criteria for determining if the trustee is acting within the power created by the trust.
It would appear the father is in a nursing home with Alzheimer's. If the house is in a trust, the trustees can sell it, and a portion of the proceeds will go to the life tenant by law. Benjamin, however will have to move.
Are you the sole beneficiary, or are there other beneficiaries under the trust? Who are the "parties" to whom you refer?
Also, was your father ever the Settlor (maker of the Trust), with the trustee who is trying to sell the house as a Successor Trustee? And if so, under what conditions could the Successor Trustee take control of the assets? This is a very important criteria for determining if the trustee is acting within the power created by the trust.
Is this an institutional trust or an individual?