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We are Gradoni & Associates

Licensed Private Investigators

Our agency is headed by our founder, Chief Investigator J.J. Gradoni, a well known and respected Houston private investigator who has remained licensed since 1989.

Texas Private Investigator License# A05741

Court-Ready Reports
90+ Years of Combined Experience
References Available Upon Request
Cost Effective Solutions
Former Law Enforcement
Ethical & Honorable


A Letter From One of Our Clients...

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Houston private investigators since 1989, Gradoni & Associates offers a wide range of investigative expertise. We’ve had successful experiences conducting major investigations for law firms, insurers, and corporations, and have also achieved success for individuals who came to us looking for a private investigator for a personal matter.

Gradoni & Associates - Private EyesA number of the private investigators & detectives on our team have professional law enforcement backgrounds, and are considered experts in criminal defense preparation.

Technologically Sound, for Current Times

Our staff includes audio-visual experts and professional surveillance agents that have undercover law enforcement experience. Our investigative team also has a premise liability and security expert, a certified public accountant, and experienced Civil Rights investigators.

If you have concerns in the Houston area, and are looking for a detailed private investigation agency to suit your informational needs, contact Gradoni & Associates at 281-440-0800 or send us a message using our contact form.

About Gradoni & Associates


Licensed Texas Private Investigators Since 1989

Government Trained, Expert Investigators

A majority of the private investigators & detectives on our team have professional law enforcement backgrounds, and are considered experts in criminal defense preparation and general detective work. Members of our staff include former police detectives, former FBI agents, and non-government private investigators that Chief Investigator J.J. Gradoni trained personally.

Experienced Criminal Case Detectives

On a normal basis we work with well known and respected Houston criminal law attorneys such as Jack B. Carroll, Katherine Scardino, Mark W. Bennett and others with regard to criminal investigations, death penalty cases, and murder investigations.

If you’re a private practice lawyer, associate attorney or partner of a law firm that needs a trusted source for investigation matters, contact Gradoni & Associates today. We have numerous references and strong relationships with multiple law firms and attorneys in the Houston area.

Experienced, Reputable Private Investigator

With our experience as investigators, combined with diversified areas of expertise, we’ve been able to meet the needs of the legal, insurance, and business communities in Houston, TX.

Our firm has built a strong reputation as providers of comprehensive documentation related to the subject of the investigation, which has proven useful in court settings on many occasions. Our clients can rest assured that they’ll have the facts necessary to make informed decisions.

When you hire a private investigator from Gradoni & Associates, you can take solace in knowing that you’re working with an elite detective that knows the ropes, has the patience to get the job done, and the professional experience to do it right.

Private Eye & Detective Services Overview

  • Security Evaluation
  • Video and Photographic Evaluations
  • Competitor Intelligence Development
  • Corporate Investigations
  • Electronic Counter Measures
  • Civil Rights Investigations
  • White Collar Crimes Investigations
  • Expert Testimony

We’ve Investigated High Profile Cases

Gradoni & Associates has had it’s experience in the limelight as well.

We’ve served as investigating detectives on well known and publicized cases like the Andrea Yates child drownings case, the Bellville Family Murders, and the Bugatti insurance fraud case that made its rounds in Houston and national media.

  • Asset Discovery
  • Financial Investigations
  • Personal Injury Investigation
  • Criminal Defense Investigation
  • Family Law and Custody Investigation
  • Pre-Employment and Background Investigations
  • Witness Location, Interviews, and Statements
  • Premise Liability Investigations

Read About Our Investigations!

We’re one of the few private investigation firms in Houston to maintain, and publish a newsletter about our detective work.

Our newsletter sheds light on the murky world of the private investigator. We invite you to have a cup of coffee and read about our successes in the field, conducting investigations.

Our Memberships & Associations

Texas Association of Licensed Investigators

Texas Criminal Defense Lawyers Association

Harris County Criminal Lawyers Association

Looking for a Private Investigator in Houston, TX?

Gradoni & Associates has conducted thousands of investigations, developed hundreds of sources and partnerships, and has remained a cutting edge Houston private investigator for nearly 30 years. If you need to discuss a personal or business matter with an experienced private investigator, call Gradoni & Associates at 281-440-0800 (north Houston) or 713-701-1415 (Downtown Houston).

Gradoni Private Investigations