Established in 1986, Cunningham Investigations, LLC is a privately held company based in Portland, Maine. Our Maine Private Investigators specialize in all civil cases including but not limited to corporate investigations, divorce cases, spousal surveillance, workers compensation, auto liability, and medical malpractice.

With over 40 years of combined experience, Cunningham Investigations has become a pioneer company offering professional surveillance services for the purpose of successful litigation to clients throughout Maine and New Hampshire. Our Maine Licensed Private Investigators use state-of-the-art technology including high definition digital video and photography, and continually upgrade our equipment to ensure the highest quality and accuracy in our investigations.

Professional Associations & Certifications

  • NAIS

Serviced Areas

  • Maine & New Hampshire

Payment Options

  • Cash Only, MasterCard, Money Orders, PayPal, Personal Checks, VISA

Contact Details

  City Portland, ME
  Zip Code 04104
  Address P.O. Box 1693
  Phone Number (207) 775-5656

Products & Services


Cases Involving workers Compensation, Auto Liability, and Medical Malpractice
Corporate Investigations
Criminal Records Check
Divorce and Family Investigations
GPS Tracking
Spousal Surveillance
Background Investigations
Litigation Support
Motor Vehicle Records Searches
Personal Protection
Process Service Statewide
Public Records Investigations
Witness Locates and Interviews
Finding Lost Heirs/Unclaimed Property
Asbestos Investigations- Mesothelioma

  • I would recommend this business

I have used Cunningham Investigations in the past and have had great results. I would recommend them to anyone!

K. Federico

Value for money
Service & support
Overall ratingExcellent

Customer Testimonials

Cunningham Investigations was extremely professional on every level. From the initial phone call, asking every detail about my situation, keeping me calm, to the final report. The time line and details were exceptional. I had my suspicions and Cunningham Investigations provided me with everything I needed. I highly recommend their professionals services.

In the past few years I have had a few companies contact me via mail in regards to an insurance policy that my father had that was not given to the family. I was tired of dealing with them since they all had the same line and more importantly wanted their fee up front. I never agreed to giving my money away for something that couldn’t be guaranteed to me in writing. Then I was approached by Dana Cunningham of Cunningham Investigations. Dana told me that he could get me my late father’s insurance proceeds and that he would not be paid until I got my money. Truly now I felt like I was dealing with someone who meant business, because let’s face it Cunningham Investigations was willing to go to bat for me knowing there was no (Will) for my father and no beneficiaries listed on the policy, which to me made the job even more difficult. But in the end the proof was there in the check that I received when the policy amount was paid out. So yes, Cunningham Investigations can get it done for you like he did for me.