Uri Chaitchik's Casco Development filed construction plans for a 38-unit residential building at 540 West 21st Street, in what looks like yet another condominium project near the High Line in Chelsea. The company wants to bring a 20-story, 172,000-square-foot property to the site, complete with swimming pools, multiple floors of art gallery space and other tenant amenities, according to the plans. Judging by the floor area of the residential space - 128,000 square feet - [...]