I am sorry for the property owner.
But who in their right mind would give anyone such an ‘open’ Power of Attorney.
We still meet vendors who gave their lawyers a POA when they bought, and never cancelled it. So the lawyer still has far too much access.
But thats a lawyer, and whilst no one is ever whiter than white, to give an estate agent a POA as opposed to a lawyer is a completely different matter.
In all my dealing I have actually never met (or heard of) anyone who has given an estate agent (as opposed to a lawyer) a power of attorney.