This is the Karl Fischer building rising at Union Avenue and Ainslie Street in Williamsburg, whose actual address is 405 Union. This particular Hot Karl, which is centrally located right behind a Getty Gas Station and with a heartburn distance of the soon to re-open Kellogg’s Diner, not to mention the Gateway to Williamsburg, will have 47 Burg condos when it’s done. Although, who knows? By the time it’s finished next year, it could be, you know, a rental.