Commissioned by the development firm Sumaida + Khurana, the architecture aficionados, the emerging block in the North of Little Italy area looks like it might become one of the most elegant condo buildings the city has ever seen. Simple, self-effacing and beautifully proportioned, it is the work of Tadao Ando, the Japanese architect. The one-time boxer who is now revered as a creator of serene museums and impeccable concrete surfaces, has designed an intriguing building that combines his familiar motifs with something of Nolita’s particular blend of loft living and industrial construction.