Hiring a private investigator isn’t something most people do every day. Whether you’re dealing with a difficult personal situation, a corporate matter, or a legal case that needs solid evidence, the decision to bring in a professional investigator is a big one. And like any significant decision, it pays to know what you’re getting into before you sign on the dotted line.
The private investigation industry in Ontario operates under strict regulations. Not every PI out there meets those standards. Some are exceptional. Others are, frankly, all show and no go. Knowing the difference can save you time, money, and a whole lot of frustration.
Here are seven things you absolutely need to know before hiring a private investigator in Ontario.
1. Licensing and PSISA Compliance Is Non-Negotiable
This is the baseline. In Ontario, private investigators must be licensed under the Private Security and Investigative Services Act (PSISA). This isn’t optional, it’s the law. Any investigator operating without a valid license is breaking the rules, and any evidence they gather could be thrown out in court.
Before you hire anyone, ask for their license number. You can verify it directly through the Ontario Ministry of the Solicitor General. A legitimate investigator won’t hesitate to provide this information. If they dodge the question or get defensive, that’s a red flag you can’t ignore.
At Facts Investigations, our team is fully licensed and compliant with all PSISA regulations. We operate above board because anything less puts our clients at risk.
2. Understand What Private Investigators Cannot Legally Do
Here’s where things get important for your protection. Private investigators have tools and techniques at their disposal, but they’re not above the law. There are clear boundaries that separate legal investigation from criminal activity.
A licensed PI in Ontario cannot:
- Wiretap phones or intercept private communications
- Hack into email accounts, social media, or computer systems
- Impersonate law enforcement officers
- Trespass on private property
- Access sealed court records or confidential government databases
Why does this matter to you? Because if an investigator crosses these lines, any evidence they collect becomes inadmissible. Worse, you could find yourself implicated in illegal activity. A professional investigator knows exactly where those boundaries are and works within them to gather evidence that actually holds up.
3. Get Complete Cost Transparency Upfront
Nobody likes surprise bills. Before you commit to working with a private investigator, you need a clear understanding of the costs involved.
Most investigators work on one of two models:
- Hourly rates – You pay for the time spent on your case
- Retainer fees – An upfront deposit that gets drawn down as work progresses
Beyond the base rate, ask about disbursements. These are additional expenses like travel, database searches, specialized equipment, or court preparation. A reputable firm will break all of this down for you before any work begins.
At Facts Investigations, we believe in full transparency. You’ll know exactly what you’re paying for, with no hidden fees or vague estimates. If you’re in Brampton or anywhere else in the GTA, we’ll give you a straightforward quote based on your specific situation.

4. Always Get a Written Agreement
Verbal agreements might work for borrowing your neighbor’s lawnmower, but they have no place in professional investigations. A written contract protects both you and the investigator by setting clear expectations from the start.
Your agreement should include:
- The scope of the investigation
- Timeline and deliverables
- Fee structure and payment terms
- Confidentiality provisions
- Termination clauses
This document isn’t just paperwork, it’s your safety net. If anything goes sideways, you have something concrete to reference. Any investigator who resists putting things in writing probably isn’t someone you want handling your case.
5. Discretion and Chain of Custody Matter More Than You Think
When you hire a private investigator, you’re often dealing with sensitive matters. Infidelity. Fraud. Workplace issues. Legal disputes. The last thing you need is your private business becoming public knowledge.
A professional investigator understands discretion at every level. That means protecting your identity, conducting surveillance without drawing attention, and handling all communications securely. But discretion goes beyond just keeping things quiet.
Chain of custody is equally critical. This refers to how evidence is collected, documented, and stored. If there’s any break in that chain, if evidence isn’t properly handled, it can be challenged or dismissed in court. This is especially important in cases involving workplace harassment or insurance fraud, where the evidence often ends up in legal proceedings.

6. Local Expertise in the GTA Makes a Real Difference
Here’s something that often gets overlooked: location matters. A private investigator who knows the streets of Mississauga, the neighborhoods of Scarborough, or the industrial parks of Hamilton has a genuine advantage over someone working remotely or from outside the region.
Local knowledge helps with:
- Conducting effective surveillance in busy urban areas
- Understanding traffic patterns and timing
- Knowing local businesses, court systems, and resources
- Building relationships with other professionals in the area
If your case involves activity in Oakville, you want an investigator who’s worked Oakville before. Same goes for Brampton, Hamilton, or anywhere else in the Greater Toronto Area. This isn’t about convenience, it’s about getting better results.
Facts Investigations has been serving clients across Ontario for years. We know the GTA inside and out, and that local expertise shows up in the quality of our work.
7. Know What the Final Report Actually Looks Like
At the end of an investigation, you’re going to receive a report. But what does that actually include? This is worth clarifying before you hire anyone.
A professional investigation report should contain:
- A detailed summary of activities and findings
- Timestamped logs of surveillance and observations
- Photographic or video evidence (where applicable)
- Supporting documentation
- Expert analysis and conclusions
The report needs to be clear, organized, and: most importantly: usable. If you’re taking this to court, presenting it to HR, or sharing it with your lawyer, it should stand on its own as a credible document.
At Facts Investigations, our reports are designed to meet legal standards. If needed, our investigators can also provide testimony to support the findings. That’s the kind of professional backup that makes a difference when it counts.

Ready to Move Forward?
Hiring a private investigator is a decision that deserves careful thought. You want someone who’s licensed, ethical, transparent about costs, and equipped to deliver results that actually matter. You want local expertise and reporting that holds up under scrutiny.
If you’re in Ontario and need professional investigation services, Facts Investigations is here to help. Whether it’s a personal matter, a corporate concern, or support for legal proceedings, our team brings the experience and professionalism your case requires.
Have questions? Reach out for a confidential consultation. We’ll walk you through your options and help you understand exactly what to expect: no pressure, no obligation.
