serving kings, tulare, & fresno counties. license #PI188272

Providing Facts, Information, and Service


I am dedicated to providing my clients with the highest level of service. A level of service equivalent to my career in Law Enforcement.  

My name is Brendan Boyle. I am a Licensed Private Investigator serving Kings, Tulare, and Fresno Counties. I founded Boyle Investigation Services after my career in Law Enforcement ended. I am a retired Police Sergeant with thirteen years of experience as a sworn peace officer in the San Francisco Bay Area. My career in law enforcement ended early as a result of injuries suffered while on duty; however, my passion for investigation, fact finding, and service has not, and will never diminish.  

During my career, I was assigned to Patrol, the Traffic Bureau, as a Field Training Officer, and various additional assignments. I have vast experience conducting thorough and extensive criminal investigations, traffic collision investigations, traffic collision reconstructions, and field training of recruit officers.

After being promoted to the rank of Police Sergeant, my duties included supervision of both sworn and non-sworn police department personnel, supervision and coordination of directed patrol activity, police report review and approval, and police officer employee performance evaluations.

As a Private Investigator, I strive to provide the highest level of service in the areas of criminal defense investigation, traffic collision investigation and reconstruction, and background investigation. I am an Active Member of The California Association of Licensed Investigators (www.cali-pi.org) and I regularly attend updated investigative and legislative training.  

Please call or email for a free consultation or to make an appointment. 




P.O. Box 516

Hanford, Ca 93230




Services Provided

Criminal Defense Investigation

Our criminal justice system is founded on the principle that every person accused of a crime is innocent until proven guilty. Every person has the absolute right to an effective legal defense and the ability to question witnesses brought against them. I have years of experience locating, identifying, and interviewing witnesses in order to obtain all of the facts including any exculpatory evidence. I have the ability to investigate crime scenes, locate, identify, document, and collect all forms of physical evidence. I am an expert in documenting my actions, the facts obtained, and evidence collected during the course of my investigation.

As a Police Sergeant, I was tasked reviewing police reports to ensure the investigations conducted were thorough, complete, and free of errors and omissions. I was also responsible for completing police officer employee performance evaluations. I apply all of my training, beliefs, principles, and practices in this area to my work as a Private Investigator.     

traffic collision investigation and reconstruction

During my career as a police officer and sergeant, I was assigned to the Traffic Bureau for more than six years. In that time, I completed many courses certified by California Commission on Peace Officer Standards and Training including Basic Collision Investigation, Intermediate Collision Investigation, Advanced Collision Investigation, and Traffic Collision Reconstruction. I have investigated hundreds of traffic collisions, including property damage only, hit and run, automobile versus pedestrian, minor injury, major injury, fatal injury, and vehicular manslaughter cases. I have testified as an expert at criminal trial as a Traffic Collision Investigation and Reconstruction expert. I am skilled in the areas tire friction mark analysis, basic motion equation, speed from crush, and conservation of linear momentum analysis. I use all of my training and experience in this field as Private Investigator.      

Background Investigation

The ability to very the statements, personal history, financial history, and overall character of potential employees, potential partners, or business associates is critical. I have the ability to access all manner of public records to determine the facts of a person's complete personal history. Tracking down friends, co-workers, former employers, neighbors, and relatives takes hard work and dedication. I have the knowledge skill and ability to obtain. with consent, credit, financial. and medical information. I am familiar with practices of gathering background information via social media.   




Please Contact Us

Use the form below to contact us regarding your inquiry. Please be as detailed as possible. You may also email or call us for a free consultation or to make an appointment.

Name *
Please do not include confidential or sensitive information in your message. In the event that we are representing a party with opposing interests to your own, we may have a duty to disclose any information you provide to our client.