The corner of Broadway and Fulton is about to get nearly 800 new residents. Office-to-residential conversions in the wake of COVID-19 have nearly quadrupled nationwide since 2022. More than 90,000 units are now moving through the pipeline, up 28% year-over-year. New York leads every American city with more than 16,000 units in conversion.  But numbers alone don’t explain what’s happening at 222 Broadway in the Financial District, where a building that once housed thousands of office workers is about to house something far more lucrative: tenants who want to live like members of a private club. At one point in time, former tenants there included Bank of America, Bluecore, Santander and American Express with offices occupying roughly 12,000 to 778,000 square feet of space. GFP Real Estate is launching Wrey, the conversion of 222 Broadway into 788 rental residences in Lower Manhattan.…