50-State Security Licensing Compliance Guide
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Private Investigator Licensing in Maryland

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Private investigation licenses are typically issued for individuals and organizations conducting investigative services. This guide contains information about private investigator licensing in Maryland. For assistance with licensing, please contact us to learn about our software and managed license services.

Company Licenses

Maryland Security Company Licenses

Maryland Private Investigation Agency License

Agency:Maryland State Police

Initial Registration

Form:

Private Detective Agency Application

Agency Fee:

$375 for incorporated entities or $200 for unincorporated entities. Combined security and detective agency licenses are available for $375 for unincorporated entities and $750 for incorporated entities.

Registration Renewal

Form:

Private Detective Agency Renewal

Agency Fee:

$400 for incorporated entities or $200 for unincorporated entities. Combined security and detective agency renewal fees are $400 for unincorporated entities and $800 for incorporated entities.

Due:

Biennially by the date issued.

Individual Licenses

Maryland Individual Security Licenses

Maryland Private Investigator License

Agency:Maryland State Police

Initial Registration

Form:

Private Detective Certification

Agency Fee:

$15

Notes:

Individuals operating independently must also apply for an agency license.

Registration Renewal

Form:

Private Detective Certification Renewal

Agency Fee:

$10

Due:

Triennially

Learn about security licensing in other states:

Firearm Qualification - An additional qualification attached to license applications for armed private investigators.

Private Investigator Apprentice - Apprentices are issued limited licenses and can only operate under the direction of a licensed investigator.

Qualified Representative - A licensed private investigator who is responsible for the operation and management of an investigative agency.

Reciprocity - When a private investigator is allowed to do business in a different state under the license issued by their home state.

National Association of Legal Investigators (NALI)
Industry association that sponsors education and certification efforts for members.

National Council of Investigation and Security Services (NCISS)
Private investigation and security advocacy group.

United States Association of Professional Investigators (USAPI)
Industry association focused on education and certification.

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