Private Investigation

Find a private investigator near Fairfax, VA

Find a private investigator near Fairfax, VA

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Top 6 Private Investigators near Fairfax, VA

Avatar for Prime Protection
Avatar for Prime Protection
Prime Protection
Prime Protection
Exceptional 5.0


Exceptional 5.0


Great value
  • 8 hires on Thumbtack
  • Serves Fairfax, VA
T.A. R. says, "Everything about my experience with Prime Protection was perfect. As a single female, I had to attend a very sensitive family event and needed close, personal protection from start to finish. Not only did Prime respond very timely to my inquiry in the most professional, compassionate way, but they put my mind at ease that they truly understood what was needed, would protect me fully, and I was not alone. I thought my situation was really unusual and I was the only one who needed protection like this at a family event. But they reassured me that they had done similar jobs many times before and they "got" exactly what I needed. What a huge relief that was! In addition to my physical security, it is the peace of mind they provided that is so priceless. On the event day, they followed through fully with every single promise! They were very polite and gentle with me at this very vulnerable time; simultaneously, they stayed right by my side and actively surveyed my surroundings at all times to fend off even the possibility of harm. What could have been one of the most stressful events of my life was completely manageable because of their stellar work. I am extraordinarily grateful. Moreover, their communication and customer service were truly stellar before, during, and even after the event. They provide a tremendous value, with extremely reasonable pricing and fair policies. It was a sincere pleasure working with Prime Protection. I have so much respect for this company and give them my very highest recommendation."See more


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Q & A

Answers to commonly asked questions from the experts on Thumbtack.

What does a private investigator do?

First and foremost, good private investigators follow laws. Unlike on TV, they don’t break in windows or hack into hospital computer systems to get you intel. When you hire a private investigator, you’re hiring a professional to gather facts and find information for you. Although they can’t obtain certain information (such as health records), they do have access to information that most civilians do not. Often private investigators are hired to perform surveillance or background checks or investigate cases such as adultery, child custody, missing persons, hidden assets, or debugging, and theft or other crimes.

Private investigators can be hired to interview people and provide that information to the client, perform photo or video surveillance, monitor activity at a location where you suspect criminal activities or questionable behavior, track a person’s movements, find missing people, do deep-dive background checks, and more. Private investigation can be helpful if you’re trying to get a court order but need evidence. Private investigators can also help find birth parents. Nationally, the average price range for private investigation is $70-$210 per hour.

What does a private investigator cost?

Private investigation isn’t just for blockbuster action movies. Hiring a private investigator can help in all kinds of situations ranging from finding a birth parent to improving personal security. Nationally, the average price range for private investigation is $70-$210, although pricing often hovers between $40 and $100 depending on the complexity of the services you need. Where you live in the country will affect your costs for private investigation; larger cities have higher business overhead and a higher cost of living, which in turn means higher service rates. The complexity of your case can also affect cost. A basic background check may have a flat rate, while hiring a private investigator to help with your child custody case may require more legwork and research, and therefore cost more. Some private investigators work on retainer. A retainer is essentially a nonrefundable deposit you pay to the professional — meaning you have retained their services — who then works against that amount. Here are some examples of average private investigation costs:

  • Hourly rate: $60-$70; costs can vary based on current fuel prices.
  • Flat rate: $100 for comprehensive background investigation services.
  • Retainer: $1,500 minimum retainer required by some pros before starting work.

Why do people hire private investigators?

Not sure if you should hire a private investigator (PI) for your situation? Here are some common reasons why people hire PIs:

  • To perform background checks
  • To conduct surveillance
  • To investigate and confirm infidelity 
  • To locate assets
  • To gather evidence for trials
  • And more

To find out if hiring a private investigator is the right route to take, contact a few local PIs. Ask them about the services they offer (and how much they charge).

How do you find a private investigator?

You can find a private investigator on Thumbtack. Use the filtering tool to identify a PI who offers the services you need (e.g., background checks, surveillance, etc.), and you’ll see a list of top-rated PIs in your area.

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