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Magnum Investigations
- Patient
- Expectations
- Company
“From the very beginning their team demonstrated a commitment to helping me navigate a difficult situation with professionalism, empathy, and a steady level of thoroughness.”
Best Private Investigators near Hamilton, NJ
These agencies serve Hamilton from nearby bases in towns including Philadelphia, PA, Trenton and Bridgewater.
24 agencies listed · 17 open 24/7 · 21 open weekends · 19 rated 4.5+ · 3 show a license
Data verified October 18, 2026
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Stallion Investigations and Security
- Arrest
- Phone
- Information
“But that's not the only reason , the best part was , he was communicating and send me some pictures while he was working which made me feel very relief that the job was being accomplished .”
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Acclaimed Detective Agency
- Questions
- Investigation
- Call
“However, I am happy to report that through the professional expertise of Mark Belline, his diligence and stick-to-itness he was able to locate both mother and son.”
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R.Q. Investigations
“I highly recommend his services to anybody who suspects they are being cheated on.”
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Searching For the Truth
- Forensics
- Law Enforcement
“And to beat all of the above, Mike Mancuso has a substantive law enforcement background within the New Jersey State Attorney Generals Office where he served as a senior investigator in the Major Crimes Unit where he conducted multiple Homicide Invest...”
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Klein Investigation
“I won't comment more in regards the circumstances due to legal reasons, but all I can say in him I found a friend, and someone who made me feel understood, listened to my concerns, took them seriously (as his own), and most importantly for once I did...”
The 24 agencies on this page are the private investigators listed for Hamilton, NJ. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.
Area overview: Hamilton, NJ
The 24 agencies on this page are rated from 3.8 to 5.0 across 511 reviews; 2 have 50 or more reviews and 19 are rated 4.5 or higher. When clients rate these agencies on specific qualities, they most often praise professionalism (98%), responsiveness (86%) and quality (68%). The topics that come up most in reviews of the agencies on this page are "results" and "price". 17 are open around the clock and 21 are open on weekends. The services the agencies on this page list most often on their websites are bug sweeps (3), executive protection (2), private investigation (2), security services (2) and surveillance (2). 3 show a license on their websites. Domain records put 13 websites of the agencies on this page at ten or more years old; the oldest dates from 1999. 17 offer urgent consultations and 9 offer a free initial consultation. 2 have Spanish-speaking staff. We have a website on file for 23 of the agencies on this page; 17 publish a contact page; 18 list a public email and 1 takes bookings online. We count these figures across the agencies on this page; hours and prices change, so confirm the details with the agency before you book.
Do investigators listed for Hamilton discuss a case free?
9 of the 24 agencies state that a first consultation costs nothing. Use it to describe the problem and hear whether the work can be done lawfully at all. A straight agency will sometimes tell you on that call that what you want cannot be obtained, which saves you a retainer.
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RJM Investigations
“Would definitely call again if I ever needed someone and would certainly recommend to anyone looking.”
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Best Rate Private Detective
- Information
“Best of the best second to none highly recommend”
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Carl Defazio Private Investigations
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Targeted Investigations Group
“From our first live meeting to discuss the details of the case to the final live meeting to review the evidence secured with our attorneys, the team was professional, kept me well informed of the status, provided full transparency regarding costs bei...”
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Assets Protection
“Worked for this company for over 12 years great working environment great communication with management plenty of opportunities for OT if you're willing to put in the work A+”
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Platinum Investigative Services
“I don't think there is any space museum in Hamilton, NJ.”
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Cowan Investigations
- Question
- Expectations
- Team
“Ethical and dedicated professionals with superior skills and resources, combined with uncanny instincts and a sense of "street smarts" that only comes after many years of high-level law enforcement experience in the inner city.”
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OPS Security Group
- Team
- Company
- Management
“Its not just clocking in and out doing a job and getting a check, its also how they can help you grow and meet your goals as an individual, they make you want to work and when payday comes around I don't feel like I wasted 40 hours of my life and ha...”
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All Out Investigations and Security
- Price
- Matter
- Video
“I reached out to “All Out Investigations and Security” for a personal matter and Pat, the owner, responded within minutes providing me with not only a process server quote but some free, creative ways how to obtain additional information that we need...”
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New Jersey Investigation
- Job
- Information
- Price
“Their rates are extremely fair even though Paul waived the more than reasonable fee of $175 to determine a "woman's" passport from Volsk, Russia was fraudulent by having a colleague review the picture of the fraudulent passport.”
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Aim Security
- Company
“Aim Security has been a reliable resource for providing security on short term assignments and continues to be a reliable alliance for our company to depend on.”
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Anchor Investigative Services
“His firm Anchor Investigative Services is highly recommended.”
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Echo Delta Security Services
- Company
- Property
- Squatters
“You know I had to sit and think like ed is a good boss but has a temper like me and I need just let it go he taught me a lot and I learned a lot so ed we're good dude I'll let that whole situation go and my ego also be safe out there and hope your co...”
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The Private Ink Agency
- Company
- Learned
- Security
“His attention to detail to all of the event's dynamics made us feel very comfortable and at ease because this was our first event of this size in a public park”
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Sepulveda
“The class was informal but thorough and Kharis was kind enough to give me a tutorial on how to use and clean my Woodsman after the range portion of the class.”
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JMH Investigations & Personal Protection
“The owner, Jim, has been extremely responsive to our requests, flexible with our scheduling needs, and has provided answers and solutions to security-related inquiries.”
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Draphtac Security
- Information
- Confidence
- Training
“Derf was an extremely informative instructor, took his time to teach us the ins and out of our shotgun now I feel extremely confident now to go and shoot with my family.”
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Acclaimed Investigations
“Cochran at 8pm the night before I needed paper work to be served and he came through and delivered on his promise when so many other people turned me away.”
Private Detective Services in Hamilton, NJ Cost Estimates
Minimum cost
$343
Maximum cost
$10856
National Average
$1372
Avg Per Hour Rates
$143
$800
$2286
Fair price range is based on 336 cost profiles
Why these companies made our list
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