Hire Private Investigation in Long Island, New York 2026 — Companies & Prices — Page 12

Hire Private Investigation in Long Island, New York 2026 — Companies & Prices — Page 12 | 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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PROFESSIONAL RESEARCH SERVICES LLC

PROFESSIONAL SECURE INVESTIGATION SERVICES LLC

PROFESSIONAL SERVICE INVESTIGATIONS INC

PROTEC SERVICES INC

PROTECTION ADVISORY INTERNATIONAL LLC

PROTECTIVE INTELLIGENCE GROUP INC

PROTOCOL SECURITY INC

PT INVESTIGATIONS LLC

PUBLIC SECURITY LLC

RADIUS INVESTIGATIONS INC

RAHMING FREDERICK N

RALPH LAFEMINA & ASSOCIATES INC

RAM INVESTIGATIVE GROUP INC

RAMIREZ SUSAN R

RAMPANT LION ASSOCIATES CORP

RANDAZZO GARY

RAYMOND ALVAREZ

RAYMOND RUSIELEWICZ JR

RCM PROTECTION AND INVESTIGATIONS L.L.C.

RE CARL F

RED FOX PRIVATE INVESTIGATIONS, LLC

REDSHIFT INVESTIGATIONS LLC

REEHIL MICHAEL A

REGIN ASSOCIATES INC

REIMER HARRY

REINBACH PREMIER SOLUTIONS LLC

RESULTS INVESTIGATION SERVICES INC

RIBANDO CONSULTING, L.L.C.

RICHARD BLAISE & ASSOCIATES INC

RICHARD P LAWRENCE JR

RICK ARDEN PRIVATE INVESTIGATOR

RING JARED

RIVERA JUSTO M

RK INVESTIGATIONS INC

ROBERT A FRICKE INC

ROBERT ALDRICH ASSOCIATES LLC

ROBERT GUENDEL PRIVATE INVESTIGATION INC

ROBERT MARI JR

ROCHESTER RONALD O

RODGERS INVESTIGATIONS

RODRIGUEZ JOHN J A.O.M.

ROK INVESTIGATIVE GROUP INC

ROOT INVESTIGATIONS

RQ INVESTIGATIONS LTD

RUSSELL CHARLES J

RUSSO GLENN F

RUTUELO VINCENT J

RYAN HORN

Frequently asked questions