Accessory Dwelling Units

What is an accessory dwelling unit (ADU)?

An accessory dwelling unit (ADU) is a habitable living unit added to, created within, or detached from a single-family dwelling that provides basic living, sleeping, eating, cooking and sanitation.

Watch the City Council Meeting, February 12, 2019, Item 12

Example of an ADU above a garage

Large Green ADU

Important Documents


  1. ADU Guidebook for Homeowners
  2. ADU Reference List
  3. ADUs: Housing Options for a Growing Region - Policy Brief
  4. City Council 02-12-19: ADU Public Hearing Presentation
  5. City Council 02-12-2019: ADU Staff Report
  6. City of Northfield - ADU Information Sheet
  7. In the News - Support and Opposition
  8. What is an ADU?