Is Private Investigator Evidence Admissible in Court?

, , , |27/06/2023

Private investigator evidence is not automatically admissible. A judge or tribunal decides, and only after looking at how it was collected. A licence does not put the report into evidence by itself.

Is a private investigator admissible in court?

People ask that because they want the notes, photos, or testimony to be usable. The useful version of the question is whether the evidence is admissible, not whether the person is. Courts have accepted investigator evidence in family and civil matters when it was gathered lawfully and the investigator can explain the method. They have also rejected evidence that was obtained by breaking the law.

This is not a prediction for your file, and it is not legal advice. Your lawyer decides what to file.

What usually helps

  • Dated notes: who was seen, where, and when.
  • Photographs taken from a place the investigator was allowed to be.
  • A licensed investigator who can describe the collection without guessing.

What gets refused

Hacking an account, trespassing, and hiding a device are not investigative techniques a professional firm will use. Evidence taken that way can be excluded, and it can create a separate problem for the client. If the worry is whether following someone has crossed into harassment, that is a police question, not a set of instructions on this page.

For a family file, start with custody investigations. For the hire itself, use the Ontario hiring guide.

Call Investigation Hotline at (416) 205-9114 if you need the documentation scoped before counsel reviews it.

To learn more, contact Investigation Hotline at

+1 416-205-9114