Register your Accessory Dwelling Unit

Contacts

Municipal Office

395 Mulock Drive P.O. Box 328 Station Main, Newmarket, Ontario
L3Y 4X7
905-895-5193

Email Us

To register for an Accessory​ Dwelling Unit (ADU), the following steps must be taken to complete the application process:

New Accessory Dwelling Units

​New accessory dwelling units must be constructed under the building permit process and the application for registration submitted after the following work has been completed:

  • Final building inspection report
  • Compliance report from Electrical Safety Authority for both upper and lower units (dated within 6 months of submitting application)
  • A sketch of parking area with dimensions
  • Complete and signed ADU application 

Unregistered Existing Accessory Dwelling Units built after 1995

  • Final building inspection report
  • Compliance report from the Electrical Safety Authority for both upper and lower units (dated within 6 months of submitting the application) 
  • Complete and signed ADU application
  • A sketch of parking area with dimensions

Existing Accessory Dwelling Units built prior to 1995

  • Letter from Central York Fire Services (dated within 6 months of submitting the application) indicating compliance with the Fire Code 
  • Compliance report from Electrical Safety Authority for both upper and lower units (dated within 6 months of submitting the application)
  • A sketch of parking area with dimensions
  • Complete and signed ADU application 

Please note that building permit fees or any other agency inspection fees are not included in the above and are payable by the applicant as required.

Inspection Information - Call for an appointment

  • Central York Fire Department: 905-895-9222
  • Electrical Safety Authority(Fire Code Compliance for Upper & Lower level) : 1-877-372-7233
  • Town of Newmarket Building Department: 905-953-5300 ext.2400