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Private Investigator
Some details on this page are not yet confirmed against an official source. See sources below or contact the licensing board to verify.
Yes
License Required?
3 yrs
Experience (Years)
No
Exam Required?
Varies
Total Initial Fees
No
Bond Required?
Available
Armed Endorsement
Get the Maine Private Investigator Roadmap — every step, fee, and deadline mapped out. — every step mapped out.
Get the Roadmap — $20You must be at least 18 years old. Maine requires state licensure for private investigators through Maine State Police – Special Investigations Unit. All applicants must meet education, experience, and examination requirements established by state law before practicing professionally.
Maine requires 3 years of investigative experience. 3 yrs related exp OR 60 academic credits via investigative assistant sponsorship
60 academic credits can substitute for experience requirement.
Submit to a fingerprint-based criminal background check. Disqualifying offenses include: Felony conviction, Crimes of dishonesty.
Submit your application to the Maine State Police – Special Investigations Unit.
Renew your license every 2 years.
Available License Categories
VerifiedMaine requires state licensure for private investigators through Maine State Police – Special Investigations Unit. All applicants must meet education, experience, and examination requirements established by state law before practicing professionally.
Private Investigator
Individual PI license
Required Experience
Verified3 years
Years of Experience
Details
3 yrs related exp OR 60 academic credits via investigative assistant sponsorship
Private investigator experience requirements often include work in law enforcement, military intelligence, legal investigations, or supervised work under a licensed PI.
Exam Requirements
VerifiedNot Required
State Exam
Overall licensing difficulty: 11/100
Study recommendation: 1–2 weeks of focused review is usually sufficient
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Private Investigator Exam Prep
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Study guides for the PI licensing exam.
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Minimum Age
18 years old
Background Check
VerifiedRequired
Criminal Check
Required
Fingerprinting
Required
Moral Character
Disqualifying Offenses
Surety Bond
VerifiedNot Required
Bond
Insurance
VerifiedNot Required
General Liability
Not Required
Errors & Omissions
Not sure if you need a private investigator license? Check whether your state requires one.
| Fee | Amount |
|---|---|
Total Initial Fees Not specified | Varies |
Use our licensing cost calculator to estimate your total investment including education and exam fees.
Calculate your licensing ROI →
See how quickly your license investment pays for itself.
Renewal & CE Requirements
Verified2 years
Renewal Period
—
CE Hours Required
Regulatory Board
Private investigator licenses must be renewed on schedule. Some states require continuing education covering legal updates, ethics, and investigative techniques.
Out-of-State Reciprocity
VerifiedDoes Not Accept Out-of-State Credentials
Transfer Details
Maine does not have reciprocity
Additional Requirements for Transfer
Private investigator license reciprocity varies by state. Some states offer endorsement for experienced PIs, while others require passing the state exam regardless of prior credentials.
Moving to another state? Use our Transfer Tool to see what you need →
Compare Maine with other states →
See how requirements, costs, and timelines differ across all 50 states.
Firearm Carry Endorsement
VerifiedAvailable
Armed Endorsement
Required
Firearm Permit
Firearm Qualification
Must hold valid Maine concealed carry permit
Armed endorsements typically require additional background checks, firearm training, and periodic requalification at an approved range.
Maine calls it 'Professional Investigator' rather than Private Investigator. 60 academic credits can substitute for the 3-year experience requirement via investigative assistant sponsorship. Licenses renew every 2 years. Neighboring states include New Hampshire, each with their own private investigator requirements.
Called 'Professional Investigator' in Maine.
Education pathway: 60 credits can substitute for exp.
Licensed through State Police.
No exam required. Maine does not impose this requirement on private investigators at the state level.
Maine does not have automatic reciprocity for out-of-state private investigator credentials. Applicants from other states must meet all Maine requirements independently.
An armed endorsement is available for licensed private investigators in Maine who complete additional firearms training and qualification requirements.
Private Investigator requirements in nearby states
| State | Total Cost | Timeline | |
|---|---|---|---|
| Maine (you) | $200 | 162–174 wks | |
| Massachusetts | $400 | 162–174 wks | → |
| New Hampshire | $200 | 162–174 wks | → |
| Vermont | $200 | 162–174 wks | → |
Other professional licenses in Maine
See how Maine compares: Private Investigator License Fees by State — Cheapest to Most Expensive →
Related Guides
Compare private investigator requirements across all states →
Private Investigator licensing requirements nationwide →
Not sure private investigator is right for you? Find careers that match your situation →
How does Maine compare to other states for private investigator? See the full comparison →
Calculate the return on investment for your private investigator license →
Explore requirements for other professional licenses in Maine.
Private Investigator Schools in Maine
Compare approved training programs, costs, and requirements.
Moving to Maine? Use our free Transfer Tool to see what you need →
Already licensed elsewhere? See how to transfer your Private Investigator license to Maine →
Transfer your Private Investigator license from Maine to: New Hampshire →
Maine requires a state-level PI license. 3 years of experience are required. All licensing is managed through the Maine State Police – Special Investigations Unit.
Requirements vary by state and may change. Always verify current requirements with your state licensing authority.