Best Private Investigators near Towson, MD
2 of these agencies are based in Towson; the others serve Towson from towns including Baltimore (6 mi), Timonium (4 mi) and Parkville (6 mi).
5 open 24/7 · 10 open weekends · 11 rated 4.5+ · 3 show a license
Data verified October 18, 2026
Alpha Elite Security & Private Investigations
“He worked every angle of the case diligently and stayed in constant contact with me through out the investigation.”
Castle Security Group
“Hired this company, and within ONE DAY the case was handled perfectly.”
Centennial Protection Group
“Comprehensive support and very timely communication.”
Metropolitan Police Protection/Security Services
“I highly recommend this company to anyone who is looking for professionalism and great customer service.”
Constable Court Services
“I would definitely recommend Constable Court Services and I look forward to working with the services again as needed.”
The 14 agencies on this page are the private investigators listed for Towson, MD. 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: Towson, MD
13 of the 14 agencies on this page have a rating, from 4.1 to 5.0 across 103 reviews; 11 are rated 4.5 or higher. 5 are open around the clock; 10 are open on Saturdays and 6 on Sundays. 3 show a license on their websites. 8 have ten or more years of experience, the longest 21 years. 5 offer urgent consultations and 1 lists coupons or special offers. We have a website on file for 11 of the agencies on this page; 8 publish a contact page and 8 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.
Why are investigation agencies outside Towson shown here?
2 of the 14 agencies have an address in Towson. The others come from other towns. Investigators travel to the subject, so an office one county over is rarely the issue. State licensing is the thing to check.
Prominent Defense Agency
“Great learning experience and awesome instructor's I would recommend taking the classes and knowledge they give”
High Speed Protection
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The Bowden Group & Associates
“This agency is incredible and I'll recommend them to all my family & friends.”
Proof Investigations
Protection Security Associates
“If your looking for any security training PSA is the company you're looking for.”
Investigative Services of M D
Excel Associates
“I've always found Excel to be reliable, efficient, and affordable.”
World Wide Investigation
Why these companies made our list
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