Re: the building being bait
IANAL and NY is a world of its own anyway, but I think in most places it is legal to make recordings on one's own property, even without consent of those being recorded. This is necessary for running security. It might also explain why Kushner had to make it look like he was down with the whole 666 thing.
If these Masters of the Universe want to talk, maybe they can't go to someone's private residence if there's no trust, but they also can't go for a walk on the beach either, because some pleb might recognize them. They have to go somewhere like fucking Antarctica, or Top of the Sixes if it's not top secret… but the drinks can get them babbling and leaving clues.
In some ways, it's good to be a pleb.
Something else that might be of note: It is possible to shine a laser (and lower frequencies like infrared and possibly down through microwaves) at a window and pick up conversations inside the building. This requires line of sight and it will work much better if there is a clean reflection, which requires the window to be perpendicular to the laser.