As the demand for urban housing increases, the untapped air space above existing buildings is being explored to increase the value and rental income of individual properties. To put it more simply, ...

Building on top of another building is nobody’s first choice. Issues of structural capacity, construction logistics, approvals for extra height, and aesthetic and programmatic relationships make it ...

“Hearst Magazines and Verizon Media may earn commission or revenue on some items through the links below.” I’ve been quarantining with my parents in their home since last year—which means I’ve been ...

A developer has filed plans to top a commercial building in San Francisco’s Chinatown with a two-story addition of six apartments. Xie Associates, an architectural firm led by Bill Guan based in ...

The owner of the Kinn Guesthouse in Milwaukee’s Bay View neighborhood is seeking approval to add a five-story vertical addition to a downtown building to create a 62-room boutique hotel. Journal ...