If the fully qualified client coming to me to buy a home says "I don't want to be near any blacks (Jews, Mexicans, etc.)" I am obligated to NOT take his business. If I do so I am risking a fine and loss of my license.
And the real estate commission has spotters out looking for violators. They'll pretend to be buyers while visiting an open house, for example, and ask about the racial composition of the neighborhood. I am only allowed to give them sources of that information, even if I know every family on the block.
Why are building boards in New York still allowed to nix potential buyers? I recall that Madonna was denied the purchase of a condominium she wanted by the building’s board. Are these boards subject to any housing discrimination laws?