
Calderbank Investigations is bonded, insured, and licensed under the authority of the Maine State Police and the New Hampshire Department of Safety. We serve the entire Maine and New Hampshire region and through a network of professional investigators, can assist your needs nationwide or around the globe.
Douglas J. Calderbank, owner of Calderbank Investigations, is a licensed investigator with many years of investigative experience. He personally oversees each case to ensure they are handled competently and professionally. He is a member of the National Association of Investigative Specialists, the National Council of Investigative & Security Services, and on the Board of Directors for the Maine Licensed Private Investigators Association.
Calderbank Investigations is an investigative firm built on outstanding client service and repeat business. With a reputation based on integrity, reliability, and professionalism, services to our clients are of the highest quality. We pride ourselves in devoting our full attention and resources to each and every client. Calderbank Investigations is uniquely qualified in a broad range of services required of a private investigative firm in today's environment.
Out staff consists of full and part-time experienced investigators who contribute broad expertise to the services we provide. All of our investigations are conducted in strict confidence, and comply with all Federal and State Privacy laws, including the Fair Credit Reporting Act (FCRA) and the Gramm-Leach-Bliley Act. Calderbank Investigations is committed to protecting individual's rights and privacy. Our staff understands the need for accurate, unbiased evidence and the importance of obtaining that information quickly and discreetly in order to allow our clients to make informed decisions.

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Calderbank Investigations utilizes sophisticated state-of-the-art video and photographic equipment. Video/photo evidence captured by our staff can be sent to our clients on Video CD, DVD, over the Web, and on VHS from our computerized office. We also have the latest in high tech surveillance equipment that can handle even the most difficult investigation.
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Information sent by our clients via the web or fax can be received at any field location by our investigators.
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Surveillance investigations are supported with video documentation and detailed reports tailored to your company's needs.
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Experienced with testifying at all levels of the legal process.
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We adhere to all State & Federal laws

Maine Licensed Private Investigators Association, Board of Directors
National Association of Investigative Specialists
National Council of Investigative and Security Specialists
Whether you are an insurance claims representative, an attorney, or a private citizen, our investigative expertise will exceed your expectations. We absolutely guarantee your satisfaction with our investigative efforts! Learn more about us by filling out our Online Information Request , or by calling toll FREE at 877-436-4062
References are available upon request.
* We are not attorneys, and do not give legal advice. For such, you should seek the advice of a licensed attorney in your state.


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