Hire Private Investigation in Long Island, New York 2026 — Companies & Prices — Page 9

Hire Private Investigation in Long Island, New York 2026 — Companies & Prices — Page 9 | HireSecurityNow.com

What does a private investigator do?

Licensed private investigators handle the fact-finding side of security: physical and video surveillance, background checks and due diligence, fraud and infidelity investigations, skip tracing to locate hard-to-find people, and often process serving. The value is evidence gathered lawfully and documented well enough to be used in an insurance claim, a courtroom or a private decision. In Long Island, the final cost also depends on local context — such as affluent nassau and suffolk suburban retail — so it pays to request a tailored proposal and compare several licensed providers.

Do private investigators need a license?

Yes — PI work is one of the most tightly regulated parts of the security industry. In California an investigator or agency holds a BSIS Private Investigator license; in Illinois, a Private Detective license through IDFPR; other states run comparable boards. This matters directly to the client: evidence gathered by an unlicensed operator, or gathered unlawfully, can be worthless in court and expose you to liability. Always confirm the license is current. When hiring in Long Island, confirm the provider knows the local environment and challenges such as retail loss prevention at high-volume malls.

What license do security guards on Long Island need?

New York regulates security differently from California: individual security guards are registered and trained under the New York State Security Guard Act, while the company employing them must hold a Watch, Guard or Patrol Agency license issued by the New York Department of State, Division of Licensing Services under General Business Law Article 7. Investigative firms hold a separate private investigator license. Armed work requires a New York pistol license plus armed-guard registration, which are difficult to obtain in the New York City region, so most contract security across Nassau and Suffolk is unarmed. Confirm the company's Watch, Guard or Patrol Agency license and that its guards are state-registered before hiring.

What corporate and healthcare security demand exists on Long Island?

The Melville and Hauppauge corporate parks drive professional, guest-facing office coverage — lobby and reception posts, integrated access control and badging, and after-hours patrol — while the Northwell Health system and other hospital campuses need around-the-clock officers trained in de-escalation for emergency departments and controlled-entry areas. Buyers here prioritize service quality and appearance, so look for a provider experienced in corporate and healthcare settings across Nassau and Suffolk.

How do I find private investigation companies in Long Island?

On HireSecurityNow.com you can search and compare licensed private investigation companies in Long Island. Review each company's profile, check the services they offer and request free quotes. Our directory lets you filter by city and service type to quickly find the best available options.

Private Investigation in Long Island, New York

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LYSAGHT JOHN J

M & J JACKSON LLC

MACALUSO LEONARD

MACIAS KEITH A

MADIGAN CONSULTANTS INC

MAJESKI ASSOCIATES INC

MAMMONE WILLIAM J

MANOR CONSULTING

MANUEL CANTOR

MARC DAVID INVESTIGATIONS INC

MARC L MERCKLING

MARCELA SABANI REGLIS

MARKEY EUGENE

MARKLEVINE PI INC

MARKOWSKI WILLIAM J

MAROTTA JOSEPH F

MARSHALL JEFFREY S

MARSIGLIANO THOMAS

MARTIN J HELMKE INVESTIGATIONS

MARTINELLI VINCENT

MARTINEZ GREGORY A

MASSARO ANTHONY

MATARAZZO ROBERT A

MATULA JOHN F

MATUOZZI JAMES

MAXIMUM SECURITY

MAXIMUM SECURITY NYC INC

MAY INVESTIGATIONS

MAYBERRY INVESTIGATIONS CORPORATION

MCCALL RISK GROUP

MCCANN MICHAEL C

MCCARTHY MICHAEL

MCCUCKIAN BRIAN

MCHUGH JOHN E

MCKENNA GARRY L

MCKEVENY PETER

MCLAUGHLIN KEVIN J

MCLYMONT FELIX JR

MCS CONSULTANTS INC

MCVEY SEAN B

MEEHAN JOHN T

MEGIBOW STEVEN R

MENDEZ JOSEPH

MESITA JOSEPH V

METRO ONE LOSS PREVENTION SERVICES GROUP(GUARD

MEYERDIERKS JIM

MICHAEL FALZARANO AND ASSOCIATES INC

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