NYIA operates from our Manhattan office across the entire New York metropolitan area, with regular casework in all five boroughs, every Westchester community, Rockland County, and Long Island. Nationally and internationally through vetted partner agencies.
Wherever you are, you can reach a New York private investigator who knows the area. NYIA works as a private detective across the five boroughs, Westchester, and Long Island, with last minute surveillance when time is short.
Coverage on a map is easy to claim. What matters in the field is whether the investigator has worked that street before.
Surveillance in Manhattan is a different job than surveillance in Scarsdale. In the city the problem is crowds, doormen, and traffic that can strand a vehicle team for an hour. In the suburbs the problem is the opposite. A parked car nobody recognizes stands out on a quiet street within twenty minutes, so the whole approach has to change. Long Island adds distance, and Rockland adds bridges and river crossings that decide whether a subject can be followed at all.
Venue matters too. A case headed to court is usually heard where the parties live, so evidence gathered in Westchester tends to be used in Westchester. Investigators who work those courts know what local judges expect to see in a report.
We run from two offices. The main office is at 555 Fifth Avenue in Manhattan, and a second location in Haverstraw covers Rockland County, which cuts response time for cases north of the city.
If your town is not listed below, call anyway. We cover the whole metropolitan area, and we handle national and international matters through vetted partner agencies.
The core of our caseload. Coverage across every NYC borough plus the Financial District as a dedicated practice area.






Complete Westchester County coverage from Yonkers in the south to the Putnam line, Hudson River to Connecticut border.
Coverage across Long Island's North Shore, South Shore, and Suffolk County. From Great Neck to Huntington and beyond.
NYIA keeps a second office in Haverstraw, covering all of Rockland County: New City, Nyack, Suffern, Spring Valley, Nanuet, Pearl River, Stony Point, and the surrounding communities.
Yes. New York Intelligence Agency is a licensed, bonded, and insured agency (NYS DOS #11000169770) serving the entire New York metro area. Every case is led by Emmy® Award winning investigator David Schassler with complete discretion.
From our Midtown Manhattan office we cover the entire New York metro area; for urgent matters we can usually mobilize the same day.
It depends on the service. Surveillance is billed hourly, while background checks and polygraph exams are flat fees. Most cases are quoted after a free, confidential consultation, with a written estimate before any work begins.