Two of my last three inspections the Realtor has brought along a bystander who just watches and throws out a comment once in a while. Both houses are high end homes. I finally ask who are you? The Realtor says he is a contractor. I say Hi give him friendly tap on the shoulder and do my thing.
Both times no problems as I do not say anything I can not back up.
If I was my client I would have said something to the Realtor like why is he here? I hired a Home Inspector. What is this an intimidation thing?

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Dave