Licensed Since 1989 - Trusted by Attorneys & Corporations

Houston Private Investigators for Corporate, Legal, and Criminal Cases

Gradoni & Associates has investigated for Houston attorneys, corporations, and families since 1989. Our team of former law enforcement and federal agents builds the documented evidence that holds up in boardrooms and courtrooms alike.

Court-Ready Reports

Former Law Enforcement

Ethical & Honorable

Cost-Effective Solutions

References Available

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The Truth Makes
A Difference.

For over 35 years, Gradoni & Associates has provided licensed investigative services to Houston's legal and business community. Our investigators, former police detectives and federal agents, support corporate counsel with due diligence and workplace investigations, assist attorneys with civil and criminal casework, and conduct the surveillance and background work that both individuals and institutions rely on. Every case is handled with the discretion and documentation standard our clients expect, whether the audience is a jury, a judge, or a board of directors.


Firm Founded


Cases Investigated


Counties Served


Combined Experience

Houston's Surveillance Specialists

Surveillance Investigations

Covert, licensed surveillance for legal, corporate, and personal matters. Our investigators document activity, timelines, and locations with the accuracy attorneys and insurers require.

For Defense Attorneys

Criminal Defense

We work directly with defense attorneys to locate witnesses, review evidence, and uncover facts law enforcement may have missed. Thorough field investigation strengthens every stage of a defense.

For Corporate Counsel & HR

Corporate Investigations

From employee misconduct and embezzlement to due diligence and insurance fraud, our team gives corporate counsel and HR leaders the documented findings needed to act with confidence, and to defend that action later if challenged.

Built for Law Firms

Civil Litigation Support

We support civil litigation with asset checks, witness location, and evidence gathering built to withstand discovery and cross-examination. Built for law firms that need a reliable investigative partner, not a one-off vendor.

Family Court Documentation

Child Custody Investigations

Documented evidence of parental fitness, home environment, and compliance with custody orders, gathered discreetly and presented clearly for family court.

The Process

How It Works

A clear, confidential path from first call to final report, whether you are an individual, an attorney, or a corporate client.

Confidential Consultation

No cost, no obligation

Investigation Plan

A clear scope before fieldwork begins

Licensed Fieldwork

Conducted using legal, court-defensible methods

Documented Report

Organized findings you and your attorney or counsel can act on

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Why Gradoni & Associates

Former Law Enforcement. Corporate-Grade Documentation.

Founded in 1988 by retired law enforcement officer J.J. Gradoni, our team includes former police detectives and federal agents who bring the same standard of documentation to a corporate boardroom that they once brought to a courtroom. Attorneys and corporate clients return to us because our reports are built to be challenged and to hold up anyway.

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Trusted by Legal, Corporate Counsel & You

What Our Clients Are Saying

Open A Case

Speak With an Investigator, Confidentially

Every call is private. Attorneys and corporate clients can request a case consultation directly; individuals can reach our team the same way, at no cost.

Case Success Series

Real Investigations.
Real Results.

Every other month, we publish a Case Success feature detailing how our investigators helped an attorney, a corporation, or a family reach the outcome they needed. Details are altered, and imagery is illustrative to protect client confidentiality.

Frequently Asked

Common Questions Before You Hire an Investigator