Complaints Against Licensed Engineers or Companies

Consistent with PEO’s regulatory mandate, the complaints process is intended to deal with the actions and conduct of practitioners, to ensure the public interest is served and protected.

Make a Complaint

COVID-19 update

Update on submitting a complaint: Only complaints sent via email can be processed at this time. Signed complaint forms should be emailed to If you have recently mailed a complaint to PEO and have not received acknowledgment of receipt, please resend the complaint by email to ensure that it is received.

This form is to be used to file a complaint regarding the professional conduct of an engineering practitioner (member of PEO or a holder of a limited licence, temporary licence, provisional licence or a Certificate of Authorization (C of A) issued by PEO).

Make a complaint: What you need to do to begin the complaints process

  1. Complete and sign the Complaint Form. If your concerns involve more than one practitioner, a separate form is required for each practitioner.

  2. Attach a copy of any documents that are relevant to your complaint. Please note that additional supporting documentation can be submitted during the course of the complaint investigation.
  3. Send the completed Complaint Form and copies of related documents to:

    Professional Engineer Ontario
    40 Sheppard Avenue West, Suite 101
    Toronto, ON M2N 6K9

    or by email: 
  4. If you have any questions about PEO's complaints process, please contact us:

    Telephone: 416-224-1100 or 800-339-3716


Confidentiality of your complaint

PEO cannot guarantee that the information you provide, or the information we obtain from other parties during the course of our investigation, will remain confidential. Complained against licensed engineering practitioners are provided some or all of the information obtained during the investigation.

If a complaint is referred to Discipline, you, as the complainant, are not a party to the proceedings. Discipline proceedings and exhibits are generally considered public.


Additional Information 

Contact us about Complaints

Monday through Friday
9 a.m. to 5 p.m.

40 Sheppard Avenue West, Suite 101
Toronto, ON, M2N 6K9