When real estate professionals talk about the boom in shared office space, most think of WeWork. But the $10 billion unicorn is only one of dozens of companies vying for market share in New York City. The Flatiron District alone is home to 26 coworking spaces run by 20 different companies, according to a new report by the Flatiron 23rd Street Partnership, a local business improvement district. Some, like WeWork’s 108,000-square-foot space at 79 Madison Avenue, take up multiple floors. ...

The Bronx, which has long fought its image of a borough besotted by arson, poverty and urban decay, is now a hot commodity among the same investors and developers who overlooked it for years. In 2014, it saw an influx of $1.2 billion worth of real estate investment, a 26 percent jump from the prior year, according to data from Bronx Borough President Ruben Diaz Jr.’s office.

Some of the key commercial and retail projects reshaping the Bronx include: the redevelopment ...