$8.8M Penthouse Is the Most Expensive Brooklyn Condo Ever Brooklyn Reader September 16, 2015 September 16, 2015, 10:33 pm Another day, another record-setter. Prices just keep going up, up, up, so naturally, records keep being broken. This one is for the most expensive condo ever sold in Brooklyn. As expected , it’s the penthouse at under-construction One John Street , which entered contract (h/t Crain’s). It was […] Click here to view original web page at ny.curbed.com Want to write for us? We're looking for interns and experienced writers! Go here for more information.