New York & Long Island

Private Investigation


Security Consulting


We are available 24 hours a day.


Get a Free Confidential Consultation

New York & Long Island

Private Investigation and  Security Consulting

If you would like a free, confidential consultation,
call us at 1-888-698-0077
We are available 24 hours a day.

Radius Investigations

Radius Investigations Inc. is an investigation and security consulting agency based in New York. We are dedicated to providing our clients with the highest quality of investigation services, including surveillance, due diligence, business intelligence, and security consulting services. We serve a wide range of clients, including individual private clients, law firms of every size and specialty, multi-national corporations, hedge funds, financiers, and religious institutions.

 Click below to learn more information about our investigative services:

Radius Investigations has associate investigators and confidential sources throughout all of North America, Europe, Latin America, Africa, the Asia Pacific Region, and the Middle East.

Clients of Radius Investigations receive a user name to log in to a secure portal in order to see how their cases are progressing. The online portal also provides our clients with the ability to watch evidentiary videos, see new updates, and monitor the status of their case through our fully-encrypted and secured website.

Our experienced team of professionals are licensed, bonded, and insured to conduct surveillance and all other forms of investigations in New York, across the United States, and Globally. Our primary office is located on Motor Parkway, Hauppauge, in Suffolk County, Long Island, with easy access to Long Island, Manhattan, Queens, Brooklyn, the Bronx, Staten Island, New Jersey, and Westchester.

In addition, Radius Investigations maintains an extensive network of investigators, contacts, and sources throughout the world, ensuring that we can provide responsive, timely, and accurate investigations anywhere our clients’ needs may take us.

Our investigators are dedicated to keeping clients informed throughout the entire investigative process. We believe that by maintaining communication, we can better assist clients and provide peace of mind during otherwise stressful situations. Radius Investigations offers clients discipline, quick-thinking, and a strong work ethic dedicated to preserving our clients’ privacy and confidentiality while pursuing the objective facts with the utmost integrity.

Litigation Support


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Employee Background


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Child Custody


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Client testimonials

“As the owner of a security business installing surveillance and burglar alarm systems I had the pleasure of meeting Matthew. I can honestly tell you that over the past 7 years I have known him that he is a man that stands behind is word and is a true professional at what he does.”

Stephen Federlein Infrastructure Specialist at Festo - Doom Inc. May 14, 2017

Radius Investigations Inc

150 Motor Parkway, Suite LL20,

Hauppauge, NY 11788