Best Private Investigators near New Castle, DE
1 of these agencies is based in New Castle; the others serve New Castle from towns including Aston Township, PA (16 mi), Chester, PA (16 mi) and Middletown (17 mi).
2 open 24/7 · 4 open weekends · all 10 rated 4.5+ · 2 show a license
Data verified October 30, 2026
M. Goldman Investigations
“Mark was very helpful with my issue in a timely manner, returned calls quickly & kept me updated.”
Detect-One
“He was on point and made sure I received what I requested in the allotted time we discussed.”
Everman William H
Zimmerman Investigative Services
“Bob Zimmerman is the best he is very knowledgeable he is very professional helps me lot he solves problems so if you need private INVESTIGATER this the one .”
Delaware Detective Group
“I didn't have much time to serve the person and he got right on it and in just hours he ended up serving the person.”
The 10 agencies on this page are the private investigators listed for New Castle, DE. 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: New Castle, DE
The 10 agencies on this page are rated from 4.5 to 5.0 across 322 reviews; 2 have 50 or more reviews. 2 are open around the clock; 4 are open on Saturdays and 3 on Sundays. 2 show a license on their websites and 1 has a BBB rating of A or A+. Domain records put 8 websites of the agencies on this page at ten or more years old; the oldest dates from 1998. 2 offer urgent consultations and 2 offer a free initial consultation. We have a website on file for all 10 of the agencies on this page; 9 publish a contact page and all 10 list a public email. 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.
Do investigators listed for New Castle discuss a case free?
2 of the 10 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.
Elps Private Detective Agency
“The Most Professional Company in the World of Security and Investigations that I have ever experienced !”
Carey Investigations
Auld & Associates Investigations
“Greg is a professional that maintains the highest standard.”
Accident Crash Reconstruction by Steve Mawhinney
Why these companies made our list
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