upwards of 2,500 square-feet with an open-concept floor plan,

Ugh, I hate open floor plans. "Honey, could you be a little more quiet making dinner 40 feet away, I'm trying to watch TV!" "Well, I want to talk to Maureen while I'm cooking!" "Never mind, I'll watch on my tablet in the bedroom!"

Seems like a trend that people quickly realized was a bad idea.

Especially considering a 4 bedroom in SF is probably going to have an occupancy of at least 8.