Private investigations don't happen overnight—they follow a structured process that balances thoroughness with efficiency. Understanding this timeline helps you set realistic expectations and budget accordingly, whether you're looking into infidelity, a background check, or asset location. Here's what to expect from initial consultation to final report.
The Initial Consultation (Day 1–3)
Your first step is meeting with a licensed investigator to discuss your case. Most reputable firms offer free or low-cost initial consultations lasting 30–60 minutes. During this call or meeting, you'll outline what you need investigated—the target individual's name, last known address, the nature of the investigation, and your timeline.
The investigator will ask detailed questions to understand scope and feasibility. Some cases are straightforward; others require court records or specialized databases. Be prepared to discuss your budget. Expect experienced investigators to charge anywhere from $75 to $250 per hour, depending on location and case complexity. Retainers (upfront deposits) typically range from $500 to $3,000.
Background Research Phase (Day 3–7)
Once you hire an investigator and sign the contract, the actual work begins. The first week usually involves desktop research—reviewing public records, social media, employment records, and specialized databases. This phase is faster and cheaper than field work, but it's essential.
Your investigator will compile information on the subject's known associates, addresses, employment history, and financial background. They'll identify which leads warrant in-person investigation and which can be resolved through records alone. Many cases conclude during this phase if the information needed is available publicly.
Field Investigation (Week 2–4)
This is where physical surveillance or interviews come in. Field work is labor-intensive and drives up costs significantly. A typical surveillance day runs 8–10 hours and costs $600–$1,200, depending on location and number of investigators deployed.
Investigators conduct surveillance during times most likely to yield results—morning commutes, workplaces, known hangouts. They document movements, associations, and activities through photos and video. For infidelity cases, this phase typically lasts 5–10 days. For missing persons or asset searches, timelines vary widely based on how many leads emerge.
Key activities during field investigation include:
- Mobile surveillance following the subject
- Fixed-point stakeouts at homes or businesses
- Database queries for specialized information
- Interview coordination with witnesses or associates
- Photographic and video documentation
Report Compilation (Day 1–3 after fieldwork)
Once fieldwork concludes, your investigator enters the reporting phase. They organize findings chronologically, include timestamped photos and video clips, and prepare a detailed narrative explaining discoveries and their relevance to your case.
A thorough investigation report typically runs 20–50 pages, depending on findings. The investigator will redact sensitive third-party information and structure the report to be admissible in court if needed. This phase adds $500–$1,500 to costs, sometimes included in hourly billing, sometimes as a separate fee.
Final Delivery and Follow-Up (Week 4–5)
Your completed report arrives as a printed copy, PDF, or both. Many investigators schedule a review call to walk you through findings and answer questions. This is your chance to clarify any results or request additional investigation if gaps remain.
The total timeline from initial consultation to final report typically spans 2–6 weeks for standard cases. Complex investigations—missing persons, extensive fraud, multi-state searches—can take 2–3 months.
Total Cost Expectations
Most complete investigations cost between $2,000 and $7,500. Smaller cases might run $1,500–$3,000; larger ones can exceed $10,000. Remember that transparency matters—reputable investigators provide itemized invoices and update you weekly on costs and progress.
If you're comparing investigators, Mercoly makes it easy to find and evaluate licensed private investigators in your area, review their rates and specialties, and make an informed decision.
Frequently Asked Questions
Q: Can an investigation be rushed? Yes, but acceleration increases costs—expect to pay premium rates (often 25–50% more) for expedited work and same-day reporting.
Q: What if the investigator finds nothing? You still pay for hours worked and services rendered; the absence of findings is itself valuable information that confirms or contradicts your suspicions.
Q: Are private investigation reports admissible in court? Reports prepared by licensed investigators with proper documentation are generally admissible, but consult your attorney about your specific jurisdiction's rules.
Ready to move forward? Start by comparing licensed investigators in your area and requesting free consultations to understand timing and costs for your specific situation.