JPMorgan Chase occupies 123K SF in Five Manhattan West, Brookfield's 1.8M SF, 17-story office building in its Manhattan West megaproject on Manhattan's Far West Side. But two months after Whole Foods committed to a 60K SF grocery store on the building's ground floor, the lending giant has decided to expand heavily.

JPMorgan signed a 305K SF expansion deal, announced Monday, to take a total footprint of 428K SF in the building at 450 West 33rd St., along 10th Avenue. Brookfield spent $300M renovating the former warehouse into a glass-enclosed office building with enormous floor plates, a project designed by Rex Architects.

Manhattan West has had a busy six months after 2016 was gangbusters for its more famous Far West Side counterpart, Related Cos.' Hudson Yards. The Eugene, Manhattan West's first residential building, opened this spring. Last December, the National Hockey League agreed to move its headquarters and an official NHL store to One Manhattan West, the first new-construction office building in the complex.