Area of Operations

Houston Private Investigators San Antonio Private Investigators Austin Private Investigators Dallas Private Investigators Fort Worth Private Investigators

National Investigative Services conducts Texas Private Investigations in large Metroplex cities such as Houston - Dallas - Fort Worth - San Antonio and Austin Texas. We also successfully investigate in areas like The Valley (South Texas), North, Central and South East Texas. If you need a private investigator in remote West Texas we can do it! And of course we perform successful Texas Private Investigations in small rural towns any where in the Lone Star State.

National Investigative Services's corporate office is located in Houston, Texas. We also have associate offices throughout the Continental United States.