【Freddie Mac】Granny Flats, Garage Apartments, In-Law Suites: Identifying Accessory Dwelling Units from Real Estate Listing Descriptions Using Text Mining

As the nation’s affordable housing crisis intensifies, there is a growing movement in high-cost areas for the legalization and expansion of accessory dwelling units (ADUs)—also referred to as granny flats, garage apartments, and in-law suites. The concept of ADUs infilling housing in established neighborhoods is not new. ADUs, such as Fonzie’s above-garage apartment in the 1974 to 1984 television sitcom Happy Days, and Jesse and Rebecca’s attic conversion in the 1987 to 1995 television sitcom Full House, have been making appearances in pop culture television shows for decades.

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