Seller wants me to sign a release of liability form before entering the house...?

[Julian McLain]

Hi BP,

I have a home under contract, with a seller. His mom passed away a few years ago and he is selling as its been vacant for about 10 years.  I explained to him before signing the agreement that I will have to place a lock box on the house as my partners and I will have to get in and out on to get estimates, photos, ect.

He wanted me to sign a release of liability for that release him of all incidents that may occur to me while inside the home. I drafted up a letter and also had it notarized.  Now, he says he does not feel comfortable, (even with the letter) with me or anyone else being in the house alone. He wants to be there anytime someone goes inside and is requesting that each person sign a release form of liability document before entering.

What do I do here? How do I get potential buyers in the home while the seller is there? Thoughts?