Before you hire a private investigator, understanding what you can legally investigate yourself—and where those boundaries end—will save you thousands and help you make a smarter decision. The internet offers surprisingly powerful search tools that professionals use daily, yet most people don't know about them. Here's what you need to know about DIY investigation, when it's worth going solo, and when you absolutely need a licensed professional.
What You Can Actually Find Yourself
Public records are genuinely public, and you have every legal right to access them. Court documents, property deeds, marriage and divorce records, and business filings are available through county websites, state databases, or services like Justia and Google Scholar (free). These searches take 10–30 minutes per person and cost nothing to a few dollars per document.
Social media intelligence is another legitimate avenue. Facebook, LinkedIn, Instagram, and Twitter profiles reveal location history, employment, relationships, and activities—all voluntarily shared by the subject. Screenshots and metadata preservation matter here; document everything you find with URLs and timestamps.
Skip-tracing databases like TrueCallerId, Spokeo, and BeenVerified ($5–$20 per search) aggregate public records and can surface phone numbers, known addresses, and relatives. These aren't magic, but they work for basic location tracking or verifying someone's background.
Where DIY Investigation Gets Risky
The legal line blurs quickly once you move beyond public records and voluntary disclosures. Here's what crosses into illegal territory:
Accessing private financial records (bank statements, credit reports, tax returns) without consent is a federal crime under the Gramm-Leach-Bliley Act and Fair Credit Reporting Act. Even if you're a creditor or family member, unauthorized access lands you in court.
Pretexting—calling someone's bank, employer, or medical provider and lying about who you are to extract information—violates wiretapping laws in most states and carries fines up to $5,000 plus criminal charges.
GPS tracking or spyware without consent is illegal in most states under stalking and computer fraud statutes, regardless of your relationship to the target.
Trespassing to photograph or record on private property or through windows breaks laws in most jurisdictions, even if you're investigating a neighbor or former partner.
When to Hire a Private Investigator
Licensed private investigators ($50–$300 per hour depending on location and complexity) legally access databases and tools unavailable to the public. They know state-specific statutes and operate within legal boundaries that you may accidentally cross.
Infidelity investigations require surveillance skills and legal knowledge. PIs know where cameras can legally be placed and how to document evidence admissible in family court. DIY surveillance often violates stalking laws.
Background checks for significant decisions—hiring an employee, vetting a caregiver, or investigating a prospective business partner—demand accuracy and legal compliance. A licensed investigator carries liability insurance and operates under professional standards.
Missing persons or skip-tracing at scale requires access to specialized databases like LexisNexis, Accurint, and law enforcement contacts. Individual subscriptions cost $500–$2,000+ monthly; PIs spread that overhead across cases.
Litigation support (civil suits, custody disputes, fraud claims) demands evidence that holds up in court. Improperly gathered evidence gets thrown out and can damage your case.
Hiring Tips and Realistic Costs
Verify licensing through your state's Department of Public Safety or Professional Regulation. Every licensed PI carries a credential number and can show proof. If they can't, walk away.
Expect basic infidelity or asset investigations to run $1,500–$5,000. Background checks cost $300–$1,000. Complex cases (fraud, missing persons, competitive intelligence) run $5,000–$25,000+ depending on duration.
Most PIs charge retainers upfront ($1,000–$3,000) and bill against those hours. Ask about:
- Hourly rates for investigation time vs. surveillance time (surveillance is often higher)
- What's included in the retainer
- How they'll report findings and in what format
- Whether they'll testify if needed
Mercoly helps you compare and find trusted private investigators in your area with verified credentials and client reviews, making it easier to spot-check multiple providers before committing.
Frequently Asked Questions
Q: Can I use information found on public records to start my own investigation? Yes—public records are your starting point and are completely legal to access and use. However, know that what comes next (surveillance, interviews, database access) has strict legal limits.
Q: What's the difference between a private investigator and a skip tracer? Skip tracers specialize in locating people using databases and public records; private investigators handle broader cases including surveillance, background checks, and evidence gathering for legal matters.
Q: Will evidence I gather myself hold up in court? Probably not, especially if you didn't follow chain-of-custody rules or inadvertently broke privacy laws while gathering it. Licensed investigators know exactly how to document evidence so courts will accept it.
Compare licensed investigators in your area today to avoid costly legal mistakes and get results that actually matter.