Share 'What is Proper Open House Etiquette?'

As a consumer, I have visited many open houses. I've encountered every type from the professional, you know the man or woman who is dressed up like they are interviewing to be Vice President of the world, to the slacker who sits on the couch of the home and acts as if you are disturbing his Saturday afternoon. How do you behave at an open house? When to you approach clients? Do you even begin ne…