 Major renovation work began in February 2012, to improve the building's seismic performance, install all–new mechanical, electric, plumbing and fire sprinkler systems, and preserve and restore the building's historic lobby, at an estimated cost of .In 2012, Yelp announced it had signed a lease on the building's of office space through 2020.After two expansions, the company held a total of almost on 13 floors in the fall 2015.