Detached Accessory Dwelling Units (DADUs)

What is a Detached Accessory Dwelling Unit (DADU)?

A self-contained dwelling unit, detached from and clearly accessory to a single-family residential dwelling. Other names for DADUs include garden suite, backyard cottage, granny flat or laneway house.

I'm interested in building a DADU. What should I do next? 

Read the Detached Accessory Dwelling Unit (DADU) guide to learn about costs, permits, timelines and the DADU approval process. Please consider: 

  • DADUs are only permitted in the rear yard.
  • The maximum DADU size permitted is 65 m2 (700 ft2).
  • The size of DADUs and other structures is also limited by maximum lot coverage and setback regulations.
  • The owner of the property is required to live in either the DADU or the principal dwelling.
  • No stratification of DADUs is permitted.

You may set up a meeting with a Planner to discuss your proposal by calling Development Services. 


  • DADU guidelines in the Zoning Bylaw [link to pg. 40]