NYS DOS License #11000169770 Licensed • Bonded • Insured
New York Intelligence Agency Est. 1989 · NYC
Discreet matrimonial and infidelity investigation in New York City. New York Intelligence Agency
Matrimonial Investigations · No. 01

Matrimonial Investigations in New York City

Discreet, legally admissible investigation when you suspect a spouse or partner is unfaithful.

When trust breaks down in a marriage, you need the truth. You cannot plan your next move without it. Our team has spent more than 40 years proving infidelity in New York. We work for divorce attorneys, for family law cases, and for people just like you. We do it quietly, and we gather proof that holds up in court.

When to call a matrimonial investigator

Most people call us after months of worry. The late nights. The odd charges. A partner who pulls away. A phone that is suddenly locked. By the time you call, you often already feel it. What you need is proof. Proof to face the truth, protect your money in a divorce, or simply close this chapter and move on.

How we work

Every case starts with a private talk. You can reach us by phone, by text, or in person at our Fifth Avenue office. We listen. We ask the right questions to learn what is realistic. Then we give you an honest read before you spend a dime. If the case makes sense, we build a plan. That plan covers timing, locations, vehicle teams, photos and video, GPS tracking where the law allows, and any digital work the case needs.

Evidence that holds up in matrimonial court

New York splits property in a fair way, not always an equal one. So what you can prove about a spouse can change the outcome of a divorce. We write our reports for your attorney to use. We document the chain of custody. We match surveillance logs to photo timestamps. And our investigators can testify if your case goes to trial. We work with many of New York City’s top divorce firms, and our work is built to hold up.

Discretion is the entire job

If a subject realizes they're being followed, the investigation is over. That's why we use experienced field investigators, rotate vehicles, and operate at the level of patience this work demands. No subject we've worked has ever been spooked by our team. That's the standard.

Just for Fun

The Unofficial Cheating Detector

Eight quick questions, zero judgment. It proves absolutely nothing on its own. Only a real investigation does that. But it might tell you whether your gut is onto something. Answer honestly.

Question 1 of 8

Free, Confidential Consultation

Infidelity & Cheating case in New York?
Call David directly.

Matrimonial & Infidelity

How our matrimonial investigations help

Cost & What You Get

What matrimonial surveillance costs in New York

Matrimonial work is almost entirely surveillance driven, so it is billed by the hour rather than as a single flat fee. Usually with a minimum block of hours per outing, because a real surveillance operation cannot be done in fifteen minutes.

The main things that move the fee:

Most matrimonial engagements in New York run from a few hundred dollars for a single short surveillance window to several thousand for a multi day operation with a full evidence package. Every case is quoted individually. The initial consultation with David is free and confidential, and you’ll get a written estimate before any work begins, with no obligation.

What you receive

Frequently Asked Questions

Matrimonial Investigations. Your questions answered

Straight answers to what clients ask most. If yours isn't here, call David directly for a free, confidential consultation.

Is it legal to investigate a cheating spouse in New York?

Yes. A licensed New York private investigator can follow a spouse in public. We can document where they go and who they meet. We can photograph anything done in plain view. What we cannot do is enter a home without permission. We cannot put a tracker on a car we have no right to touch. And we cannot record private talks we are not part of. Everything we collect follows state and federal law, so it holds up if you ever need it.

Can the evidence be used in a New York divorce case?

New York is a no fault divorce state, so you do not need to prove cheating to get divorced. But surveillance evidence still matters in contested matters. It can affect spousal support where marital funds were spent on an affair, support a cohabitation claim that ends alimony, or inform custody when a partner's conduct is relevant. We document everything in a clear, dated report your attorney can use.

How long does a matrimonial surveillance case take?

It depends on the subject's routine. Many cases produce meaningful results within one to three surveillance days, often timed around a specific evening or trip. We talk through the pattern you have noticed first, then schedule surveillance for the windows most likely to be productive rather than billing open ended hours.

Will my spouse find out I hired an investigator?

No. Discretion is the core of the work. Our investigators are trained in covert mobile and foot surveillance, use unmarked vehicles, and never make contact with the subject. Your consultation and your case are strictly confidential. Your name never appears in anything that leaves the office.

What should I do before I call?

Write down the days, times, and places where you have noticed unusual behavior, and avoid confronting your spouse, which only makes them more careful. Bring that timeline to a free consultation and we will tell you honestly whether surveillance is likely to answer your question and what it would involve.

How much does a matrimonial private investigator cost in New York?

Matrimonial surveillance in New York is billed hourly, usually with a minimum block of hours per outing. The total depends on how many hours the case needs, whether it takes one investigator or a team, and what evidence you require. Most engagements run from a few hundred dollars for a single short surveillance window to several thousand for a multi day operation. The consultation is free and you get a written estimate before any work begins.

Related Services

Investigations that often go together

New to working with an investigator? See how we work, our confidentiality standards, or why a licensed PI matters.

From the field: How a private eye uncovers infidelity · Cohabitation surveillance in alimony disputes · What a PI can legally do in custody cases · What to do if you suspect your spouse is cheating · Hiring a private detective for your divorce case.

Working in New York City

The city we operate in. Today’s conditions and who lives here

New York City · Live
·· °F
Loading current conditions…
Feels like··°
Humidity··%
Wind·· mph

New York Intelligence Agency works across all five boroughs and the surrounding metro. Understanding the population we serve. Its scale, density, and makeup. Informs how we plan surveillance, locate people, and build cases in the city.

8.5M
Residents across the five boroughs
3.2M
Households citywide
$76,600
Median household income
38
Median age (years)
41%
Hold a bachelor’s degree or higher
68%
Live in renter occupied homes

Source: U.S. Census Bureau, American Community Survey (New York City).

Powered by Clickflame. Best Local SEO Company
Call DavidText us