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OPS Security Group
- Team
- Work
- Training
“And Armed pay rates are higher than most other companies, been here for 4yrs and seen people come and go, if you are a Team player, you'll get notice and moved up the chain.”
Best Private Investigators in Philadelphia, PA
24 agencies listed · 12 in Philadelphia · 12 open 24/7 · 14 open weekends · 18 rated 4.5+
Data verified October 18, 2026
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Felder & Associates Investigations
- Communication
- Hiring
- Phone
“I have had some court paper work needed to be sent and he was very receptive and punctual on making sure to contact the other party with proof of documentation as well as making sure I was handled with care for all of the legal issues I'm trying to h...”
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Elite Guard Security
- Employment
- Environment
- Management Team
“From initial onboarding to ongoing training sessions, I have received comprehensive instruction on security procedures, emergency response protocols, and customer service skills.”
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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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Echo Delta Security Services
- Squatters
- Property
- Company
“At that time we were told by the local fire officials no one could reoccupy the building and we were required to have a 24/7 fire guard posted at the building by 3:OO PM Sunday afternoon.”
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The Private Ink Agency
- Courses
- Learned
- Company
“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”
The 24 agencies on this page are the private investigators listed for Philadelphia, PA. 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: Philadelphia, PA
12 of the 24 agencies we list are based in Philadelphia; the other 12 serve Philadelphia from towns including Cherry Hill, NJ (10 mi), Bala Cynwyd (5 mi) and Mt Laurel Township, NJ (11 mi). The agencies on this page are rated from 4.0 to 5.0 across 408 reviews; 2 have 50 or more reviews and 18 are rated 4.5 or higher. When clients rate these agencies on specific qualities, they most often praise professionalism (97%), responsiveness (82%) and quality (74%). 12 are open around the clock and 14 are open on weekends. 2 show a license on their websites. Domain records put 15 websites of the agencies on this page at ten or more years old; the oldest dates from 1998. 12 offer urgent consultations and 4 offer a free initial consultation. 1 has Spanish-speaking staff. We have a website on file for 23 of the agencies on this page; 13 publish a contact page; 18 list a public email and 1 takes bookings online. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
Which investigators listed for Philadelphia describe their work online?
23 of the 24 agencies on this page have a website on file. Those pages are where an agency states its license, the kinds of investigation it takes on, and whether it works mainly for attorneys, for companies or for private clients. That last point changes how a report gets written.
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Persist Process and Investigations
“David Hahn not only advised me of an address change and where I could have my party served, but he followed up every step of the way during a very difficult time in the country.”
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Carey Investigations
“Great listener, very helpful.”
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DO Richardson & Associates
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B & R Services
- Company
“The staff is knowledgeable in all aspects of service of process and has advised us on many occasions in difficult and complex situations to assist our efforts.”
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Gray Security Investigations
- Need
“He does a professional and wonderful job in a quarter of the time while paying attention to details that are important in these delicate, sensitive matters.”
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Philadelphia Bureau Of Investigation
“They conducted surveillance and identified her boyfriend with video and photographs of when she was leaving the children alone in the house while she was with her boyfriend.”
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Gonzalez Security Services
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M. Goldman Investigations
- Attorney
- Case
- Results
“We met up for payment and results were delivered in 3 days with detailed information they even went a step further to investigate something that stood out to them on the rwport.”
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New Jersey Investigation
- Job
- Company
- Money
“They have executed on may levels getting pertinent information prior to us doing business with people who may be questionable, and have been helpful in solving some cases for private matters.”
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Tri-State Detective Agency
- Money
“She was at Dave and Buster's shooting basketball with my son for an hour and standing for hours when she told the courts she couldn't stand for longer than 10 minutes at a time with out being in pain.”
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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...”
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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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Draphtac Security
- Weapon
- Information
- Team
“I took my Basic Pistol class and my NJCCW class with Derf and his team, it was a very informative class and they were very helpful with training as well”
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Security Guards PA - Philadelphia
- Company
“If your in Pennsylvania or anywhere in the tri-state and your looking for Guaranteed venue safety and or your moneys worth, this is the company to contact 💯”
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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.”
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Protexia One Security & Detective Agency
- Company
“Actually work for this company great agents”
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Maragell
“Had a few issues but the firm worked to resolve them to my liking.”
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Selective Subpoena Invstgtv
Private Detective Services in Philadelphia, PA Cost Estimates
Minimum cost
$375
Maximum cost
$11856
National Average
$1498
Avg Per Hour Rates
$156
$874
$2496
Average price range is based on 316 cost profiles
Why these companies made our list
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