[mlrtime]

This isn't difficult to understand. Nobody that I know actually thinks "I like this neighborhood, I hope poor people don't come".

1. When you save your whole life for a downpayment and buy a house, you want it to at least KEEP it's value, nobody wants to buy a house and lose money. That is common sense.

2. People generally move to areas they desire for reasons. They want to also keep this the same or improve. They don't want it to deteriorate.

So now we can debate what lowers values (nominal terms) and what causes areas to be undesirable and how they get there.

What I can think of: Increases in crime, Dropping maintenance/services, increased pollution, increased noise, increased traffic etc...

Nowhere above has anything to do with "poors".