The Wall Street Journal's Stefanos Chen takes a look at a renewed interest in oversized decks and patios from luxury home buyers, even in colder-weather markets.

Experts attribute the shift toward larger decks to the ever-prominent indoor-outdoor trend, which has home buyers removing more walls than ever and considering the outdoors a natural extension of the home's living space.

In a national survey of more than 500 residential-architecture firms in the first quarter of 2016, the American Institute of Architects found that 69% of firms saw increased demand for outdoor living space, which is the second-highest response since the question was first asked in 2005. “It seems to be coming back stronger than in the boom,” says Kermit Baker, the AIA’s chief economist, who attributes the growth to a cultural shift away from formal living spaces.

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