We visit if it's alright with the person. The people around here are generally nice and let us look at their coops, as my mom wants to improve ours. I'm always up to visiting another person's house especially if they have animals, other than common animals like dogs. The print out isn't needed as long as I have a good feeling from the person.
I understand if the person's house is messy, but I see nothing wrong in asking someone "ooh can I see your chickens?". I totally trust all the people here but in other places like Lancaster or Palmdale, because they are city-like towns I'm cautious. If y'all think I'm horrible lemme tell you the truth.
If they call I ask questions about their set up, their expirience with chickens (or any poultry), "are you going to eat my birds?". I always got no as an answer.
If they are in California and local either in my neighborhood or close, I will ask to see their chickens and yard. I couldn't care less about inside of their house, or trailer. If they say no that's alright. My mom and I like to keep in touch with people locally or close, especially to see the development of the bird (like how they turned out like daddy or to figure which mom is their's).
If they are far away, they can come and pick up the bird. Or we could meet somewhere about an hour away from where I am, ofcourse gas payment and such.
Most who are far away don't call back.
I've already got one person who's intrested, when the little ones are big enough to sex she can come and take a look.