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Private Investigations in Texas and Mexico

Private Investigator Services 

International Specialized Investigations is a family-owned and operated Private Investigative Company headquartered in Houston, Texas with field offices in Mexico. The owner of International Specialized Investigations is involved personally with every case that International Specialized Investigations takes, ensuring optimal results!


Our company’s outstanding reputation in the PI Investigation field has been meticulously honed over the years by providing our clients with high-quality service and unswerving dedication to their causes. Your case will be treated with the utmost discretion and sensitivity. No client is ever just another number with our private investigators at International Specialized Investigations. 

Private Investigations Service Areas

International Specialized Investigations offers comprehensive private investigations services in the following areas:

  • Houston, Texas 
  • Alvin, Texas
  • Pearland, Texas
  • Galveston, Texas
  • Friendswood, Texas
  • Kemah, Texas
  • Texas City, Texas
  • Pasadena, Texas
  • La Porte, Texas
  • Deer Park, Texas
  • Spring, Texas
  • Mexico

Recent Private Investigator Cases

The private investigators at International Specialized Investigations have worked the following cases in the past months:
  • Surveillance-Houston, Texas
  • Surveillance-Orange, Texas
  • Animal Cruelty-Zacatecas, Mexico
  • Animal Cruelty, Aguascalientes, Mexico
  • Maritime Incident-Veracruz, Mexico
  • Maritime Incident-Campeche, Mexico
  • Witness Locate-Monterrey, Nuevo Leon, Mexico
  • Witness Locate-Lufkin, Texas
  • Matrimonial Investigation-Houston, Texas
  • Document Retrieval-Mexico City
  • Infidelity-League City, Texas
  • Surveillance-Laredo, Texas
  • Surveillance-San Luis Potosi
  • Private Investigation-Playa del Carmen
  • Private Investigation-Houston
  • Private Investigation-Mexico City

Call us at +281.410.1334 from the U.S.A. to speak with private investigator. 

Call us from within Mexico at +01.55.8526.1909 to speak with our Mexico private investigations division. 


U.S.A. address:

P.O. Box 890602

Houston, Texas 77289


Mexico address:

Circuito Sur 116

Unidad Ponciano Arriaga

Segunda Seccion

San Luis Potosi, S.L.P., Mexico C.P. 78390

Mexico tel: 011.52.55.8526.1909