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Best Private Investigators in Birmingham, AL

Our Recommended Top 6

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Our goal is to connect people with the best local professionals. We scored Birmingham Private Investigators on more than 25 variables across five categories, and analyzed the results to give you a hand-picked list of the best.



6Top Picks

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featured provider = Featured Provider

Birmingham, AL 35236

Why choose this provider?

The Herrin Group Investigations provides top-quality services that help clients get results. The Birmingham-area private investigation firm has more than 20 years of experience providing assistance to clients with personal and business investigative needs. The Herrin Group Investigations specializes in helping clients discover truth through investigations involving uncomfortable domestic situations, background checks, worker’s compensation fraud, corporate espionage, missing persons, witness interviews, and much more. A team of seasoned investigative professionals treats every case with the utmost confidentiality and professionalism. Clients can depend on the firm to employ the people and state-of-the-art technology to provide quick, efficient, and accurate investigations. The Herrin Group Investigations commits to delivering the highest level of service and satisfaction by paying meticulous attention to detail in every case, task, and matter.

Birmingham, AL 35243

Why choose this provider?

Frank Slapikas Investigations provides clients in the Birmingham-area with expertise that delivers results at competitive rates. The family-owned business has been providing exceptional service to individuals, businesses, and insurance companies for over a decade. The full-service firm has the licensure and insurance to provide a range of discrete investigations involving child custody, divorce, background checks, missing persons, process service, surveillance, witness location, worker’s compensation, and much more. Frank Slapikas Investigations commits to delivering the highest level of service and satisfaction with the utmost confidentiality and professionalism. A team of seasoned investigators have over 20 years of experience and can handle cases of all sizes. Clients can rely on the firm to provide a written report to document results and stand ready to testify in court.

Alabaster, AL 35007 Rating

Review Sources

5.0 (1)

Why choose this provider?

Special Investigations Unlimited provides high-quality, thorough professional services to clients in the Birmingham area. The locally owned and operated firm commits to providing the finest investigative services to insurance companies, third-party administrators, self-insured, attorneys, and corporations. The results-oriented professionals offer personalized, informative, and easily accessible customer service to every client. Special Investigations Unlimited offers a range of thorough investigative services including surveillance, accident investigations, process service, background investigations, and much more. Clients can trust the firm to conduct business with the utmost confidentiality and professionalism at all times.

Birmingham, AL 35203 Rating

Review Sources

5.0 (6)

Why choose this provider?

Joey D Investigations & Process Service has been providing professional services to clients in the Birmingham area for more than a decade. The licensed private investigative firm also has bonding and insurance to conduct cases in personal and corporate matters. Joey D Investigations & Process Service has extensive experience and expertise in the industry as well holds active membership in the National Association of Investigative Specialists and the United States Process Servers Association. The firm exerts rigorous energy, Knowledge, and resourcefulness to every case, task, and matter. Clients can trust the seasoned investigators to conduct business with the utmost integrity, confidentiality, and professionalism. The expert investigation firm specializes in process service, background checks, surveillance, skip tracing, general investigations, and GPS real time vehicle tracking. The business employs the use of state-of-the-art technology and equipment to conduct efficient investigations that get results.

Birmingham, AL 35226 Rating

Why choose this provider?

Casteel & Associates is a go-to source for quality investigative services in the Birmingham area. The locally owned and operated firm has been helping clients gather information for over 25 years. A team of professionals specializes in GPS tracking and installation services, conducting background checks, bank and asset searches, process service, and much more. The licensed private investigative firm has many years of experience and expertise in the industry as well as membership in many professional investigative associations including the Alabama Private Investigator’s Association, The National Association of Investigative Specialists, and others. Casteel & Associates has a reputation for providing the highest quality of service and integrity while working on client cases. Clients can rely on the firm to maintain an expansive inventory of specialized equipment and use the latest technology to gather information that they need and want.

Fultondale, AL 35068 Rating

Review Sources

5.0 (3)

Why choose this provider?

Spy4Rent provides high quality comprehensive investigative services to clients in the Birmingham area. The professional group of specialized contractors and investigators focuses on conducting thorough investigations in areas of family law, process service, electronic surveillance, corporate matters, background checks, witness location, insurance, and many others. Spy4Rent commits to providing the highest level of service and satisfaction while obtaining the quality results that clients demand. Individuals and corporations can trust the firm to quickly ascertain discovery options and obtain evidence in a proper legal form. The seasoned team have diverse backgrounds in all facets of legal investigations and operates within all ethical and legal standards. Spy4Rent can handle jobs of all sizes and scope with the utmost professionalism and discretion. Clients can also rely on the firm to offer a range of surveillance equipment for rent to keep track of assets and loved ones.

Compare our Top Private Investigators

NameExpertise RatingAddressPromotionsLearn more
The Herrin Group Investigations
Birmingham, AL 35236
Frank Slapikas Investigations
Birmingham, AL 35243
Special Investigations Unlimited
Alabaster, AL 35007
Joey D Investigations & Process Service
Birmingham, AL 35203
Casteel & Associates
Birmingham, AL 35226
Fultondale, AL 35068


  • Introduction

    Some cases grow cold without ever getting solved by the police, and others tend to be too unorthodox for the police since they're mainly limited to criminal cases. This is where private investigators come in.

    Private investigators, also known as PIs, offer a wide range of services, including finding missing persons, tracking marital infidelity, investigating theft, running background checks, verifying insurance claims, and collecting debts on behalf of their clients.

    PIs work on any case requiring extensive research and investigation. Their duties range from gathering vital facts and connecting clues to providing conclusive information regarding the case.
  • What is a private investigator?

    Private investigators are experienced individuals hired to carry out detective work. They are fact-finding experts who dedicate time and effort to gather evidence and reveal information that would be difficult to gain through ordinary means. Private investigators can either operate alone or work for an agency.

  • Are private detectives real?

    Yes, private investigators are real. They provide their expertise to anyone who needs an in-depth investigation for an important matter. Whether tracking a long-lost loved one, running background checks, finding missing persons, or conducting general research, private detectives operate with discretion and rarely make the news.

  • What do private investigators do?

    PI work involves a lot of information gathering and fact analysis. Their field assignments involve carefully following persons of interest, conducting surveillance, interviewing people, and, sometimes, going undercover to get more information. They use GPS tracking devices, video recorders, computers, and other technology to collect information.

  • How do private investigators work?

    Private investigators’ ability to conduct examinations and close cases without their targets knowing their involvement makes them very effective. A PI firm may have different personnel, each specializing in a particular field. From computer experts to web-data analysts and field officers, these agents work together to solve cases or complete an objective.

  • What is a private investigator allowed to do?

    PIs are civilians, so they're required to operate within the confines of the law. Private investigators search multiple online databases, public records, and open source files to collect information. However, they cannot bug phones or hack into online accounts to acquire protected information. They can conduct surveillance on people in public places, but they can't trespass into their homes or property.