Best Investigation Services

Private Investigation | Colleyville, TX


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Provider LocalSaver

about this business

We are an established Private Investigation and Detective Agency providing full service investigations since 2007. focusing on corporate, legal, insurance, trademark, family and personal investigations. We are experience within the field of Private and Commercial investigations. Some of our services are available to clients all over the United States. We are a licensed, insured, and a bonded local private investigator practice in the state of Texas offering expert knowledge and advice to individuals, businesses, attorneys, insurance services, manufacturers and the public in the greater Dallas/Fort Worth area and within the entire State of Texas.
We conduct, investigate and gathering information about trade mark. Names, Logos, Symbols, Jingles, Words, or Slogans that companies use to distinguish one service or product from others. Businesses put a lot of effort into creating and registering trademarks that will appeal to customers and create a strong brand image. Trademark violations occur when a business or person inadvertently or intentionally makes use of a logo, name, jingle, or other marketing tool from another business. If you are looking to protect your invaluable intellectual property call BIS Investigation today. We’ll tell you how we can implement our proven intellectual property protection programs to make sure you’re the only one who profits from your hard work, and to keep others from damaging your good name.

Our company's responsibilities include:
Performing in person and telephone interviews with subjects involved in a given case. Completing surveillance on both people and locations. Accessing local, state, regional and national databases to locate subjects. Conduct background searches and complete research on subjects and businesses involved in the case. Collect evidence, i.e. photos, recording, merchandise, on pending cases and ensure proper documentation and handling. Complete written reports detailing the nature and the outcome of the investigation. Analyze facts gathered throughout the investigation to determine the most appropriate follow up action. As a bilingual investigator, I have been able to use my language skills to help build rapport with any speaking subjects or any others languages. Ensure the most complete and thorough investigation possible while maintaining the highest legal and ethical standards.​

​​Licensed / Bonded by State of Texas
Iyad Sadi - Director, State Lice # A 03058101
Throughout Dallas,Fort worth, Texas, U.S and worldwide
Copyright © 2015. Best Investigation Services.

additional information

Hours of Operation

  • sunday 9:00am - 11:00pm
  • monday 9:00am - 11:00pm
  • tuesday 9:00am - 11:00pm
  • wednesday 9:00am - 11:00pm
  • thursday 9:00am - 11:00pm
  • friday 9:00am - 11:00pm
  • saturday 9:00am - 11:00pm


  • Background Check Investigation and assets Investigation
  • Employee Theft and Company Fraud.
  • Fraud • Asset Search • Workplace violence
  • Insurance Investigations.
  • Intellectual, Property, Trademarks, Patents, Copyrights.
  • Robbery
  • Surveillance Investigations.
  • Trademark Investigations.
  • Undercover Operation and undercover Investigations.


  • ​Undercover Operation & Investigations
  • Domestic Violence Investigation "Family Violence Investigation - Children Violence Services"
  • Insurance Workers Compensation Investigations & scams
  • Surveillance Investigations
  • Trademark Investigations Intellectual, Property, Trademarks, Patents, Copyrights Brand Protection Services

Payment Types

  • American Express
  • Check
  • Cash
  • Discover
  • Mastercard
  • Visa


To provide our clients with the highest quality, most cost effective services along
​ with courteous and dedicated investigators.

To provide the finest investigative services to our clients.

Privacy of our clients, high quality investigations, sympathetic staff, and high client satisfaction.


  • BIS Investigation support has provided me with an excellent service and investigation work. Iyad and his team completely understood our needs and requirements.
    I have complete faith in BIS Investigation Services support to be able to respond to any customers' needs, understand them and most importantly for us as we worked with Iyad previously. You will not be disappointed!

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Best Investigation Services location & information

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99 Cheek Sparger Rd
Colleyville, TX 76034
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