Secondary suite

American Craftsman house with detached secondary suite

Secondary suites (also known as accessory dwelling units (ADU), in-law apartments, granny flats, granny annexes or garden suites[1]) are self-contained apartments, cottages, or small residential units, that are located on a property that has a separate main, single-family home, duplex, or other residential unit. In some cases, the ADU or in-law is attached to the principal dwelling or is an entirely separate unit, located above a garage, across a carport, or in the backyard on the same property.[2] Reasons for wanting to add a secondary suite to a property may be to receive additional income, provide social and personal support to a family member, or obtain greater security.[2]

  1. ^ Garden Suites, retrieved 22 February 2023
  2. ^ a b "Smart Growth / Smart Energy Toolkit – Accessory Dwelling Units (ADU)". www.mass.gov. Retrieved 2 October 2016.