M. Goldman Investigations
“Very professional, accurate and conducts business with a sense of urgency and discretion.”
Best Private Investigators near Upper Darby, PA
These agencies serve Upper Darby from nearby bases in towns including Philadelphia, Bala Cynwyd and Ridley Park.
15 agencies listed · 6 open 24/7 · 8 open weekends · 12 rated 4.5+ · 1 shows a license
Data verified October 26, 2026
Felder & Associates Investigations
“I would recommend his services to anyone and he will be my first call if faced with this situation again.”
Elite Guard Security
“They are hands on and you can speak directly to the owner if you need or want to.”
OPS Security Group
“Their management team is extremely responsive and flexible with any needs that arise, and their onsite teams provide excellent professional service to our residents.”
Security Guards PA - Philadelphia
“Very professional staff they provided me excellent service highly recommend”
Persist Process and Investigations
“Definitely would recommend David's services anyday!”
The 15 agencies on this page are the private investigators listed for Upper Darby, 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: Upper Darby, PA
The 15 agencies on this page are rated from 4.1 to 5.0 across 313 reviews; 2 have 50 or more reviews and 12 are rated 4.5 or higher. 6 are open around the clock; 8 are open on Saturdays and 7 on Sundays. 1 shows a license on its website. Domain records put 10 websites of the agencies on this page at ten or more years old; the oldest dates from 1998. 6 offer urgent consultations and 3 offer a free initial consultation. We have a website on file for all 15 of the agencies on this page; 11 publish a contact page; 12 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 Upper Darby discuss a case free?
3 of the 15 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.
Fire Watch Security Guards Security & Detective Agency
“Highly recommended for any of your security needs”
Gray Security Investigations
“I called Tyrek to locate a family member sometime ago and from start to finish he was nothing but professional, informative, sensitive (given the situation), discreet, quick, and affordable.”
Carey Investigations
B & R Services
“Great company, I have been using them for years and they never disappoint my firm, I would recommend them over and over again.”
Auld & Associates Investigations
“Great to work with and produce exceptional results.”
Detect-One
“He constantly updated me on the case.”
Everman William H
Draphtac Security
“I recommend this company if you are looking for security and training.”
Accident Crash Reconstruction by Steve Mawhinney
Why these companies made our list
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