The Flatiron Building has gone from a commercial building to a residential one with 38 luxury condos.

Notable amenities in the building include a piano lounge, common areas with a billiards area,​ a wellness and fitness center and a lap pool.

What can you buy with $550,000 in Manhattan and Brooklyn? We found a range of sizes and conditions. One-bedrooms, old and new, dominate the central parts of both boroughs; those looking for more space ...