This just seems completely bizarre to me. Selling a house usually also includes moving, and is a big decision to make. People will need to think long and hard about the decision, and if they do decide to sell to a realtor, they will probably go to the realtor of their choice instead of waiting for someone to come to them. If you go around asking people if they’re selling their house (or car, for that matter), how likely is it that anyone will say “Sure, just let me pack up my things and get out of here and then we can discuss payment” or something like that? Seems like they’d be lucky to even find one person/family in a neighborhood thinking about selling their house, and then they’d also have to hope that the person /people had not already found a buyer or firmly decided on another real estate agency to sell to. Doesn’t seem to me that the odds of actually snagging anyone would not be worth the cost of sending people out. Now, I can see a real estate agency sending people out to deliver flyers or something in person to make a good impression and answer any questions so that if/when they decide to sell, they’ll be more likely to choose that company to sell to. But just randomly asking people if they’re selling their house? I don’t understand how that would get much, if any, extra business.
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Yet in my new wildness and freedom I almost welcome the bitterness of alienage. For although nepenthe has calmed me, I know always that I am an outsider; a stranger in this century and among those who are still men.
-H. P. Lovecraft, "The Outsider"