In that case I would request that in a formal letter, signed, before I entered the house.
I'm also partial to calling the police on myself before I do things the bank wants that I feel may be illegal or not "right". This way if it comes down to a legal matter its on record that I had the police come at my request. It started when I got a work order to "try and contact the homeowner. If no contact can be made and no-one is home proceed to change all the locks on the property."
I've done this on more than 1 occasion. I've also asked them to come with me into the house. This way if anything does disappear they know it wasn't from me.
"try and contact the homeowner. If no contact can be made and no-one is home proceed to change all the locks on the property."
I then went and re-read the quote and realize that this 1 line is the line I call the cops on myself almost every time.
I once had the cops arrive...tell me it was still occupied but the owner was an asshole and they then informed me they wanted me to proceed. lol. They stayed with me the entire time I was there for my safety they said.