The U.S. has an affordable housing shortage. Could ‘granny flats’ be the answer


Pictured Above:, The space between the main house and the accessory dwelling unit features a fire pit and separate seating spaces.  (Beth Nakamura / For The Washington Post)

ADUs, commonly called “granny flats” or “mother-in-law suites,” date to antiquity. But there has been renewed interest as housing costs soar across the United States, especially in high-demand, relatively low-density cities along the West Coast.

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