Private Detectives in Pasadena CA
For years, Pasadena has been an underserved community when it comes to experienced, professional private investigators. Local Pasadena PIs come and go, but rarely do any of them offer more than a few years of legitimate private investigation experience. For over twenty five years, Paramount investigations has stood as Los Angeles County's preferred private investigators. As Pasadena Private Detectives we've assisted countless small businesses, residents, and Pasadena-based attorneys with everything from surveillance services to background checks. If you're looking for a private investigator in Pasadena that's licensed, insured and committed to your case, we've got you covered.
When you choose Paramount Investigative Services Inc., you benefit from the knowledge and experience of the best private investigators in Pasadena. We invite you to read our Five Star Google reviews and our Five Star Yelp reviews for yourself to see why we’re the trusted choice for investigative services throughout Los Angeles County.

Attorney Services | Difficult Process services to Surveillance
If you're an attorney attempting to complete your client's case in a timely, efficient manner, employing an experienced private investigator is paramount. Even simple tasks like service of process can become a difficult, complex task when relying on the sheriff's office or an intern. Whether you need surveillance performed for a personal injury case, witness location and service of process, or additional services for gathering intelligence, Paramount Investigative Services is uniquely qualified within the state of California to provide the diverse suite of services you'll come to rely on. To learn more about our attorney services, contact us today. Or, if you'll need our services for an extended period of time and want us to operate as an extension of your own office, we're available on retainer.
Corporate Investigative Services
Workers' compensation cases, personal injury cases, internal investigations, intellectual property theft and hostile terminations can all stretch any corporate legal and HR department past the scope of their respective positions. Having assisted numerous companies both small and large in a variety of different capacities, Paramount investigations is ready to assist any Pasadena business in their legal battles or internal difficulties. Contact a Pasadena Private Detectives to learn more about our corporate services. We also offer services for background checks, should your company require a more in-depth look into either an existing employee who you believe may have been untruthful in their original application, or a first-time applicant trying to circumvent your vetting process. As licensed and insured private investigators, we're prepared to partner with your business to ensure you're protected on all fronts.
Private Party Investigative Services | Pasadena Private Detectives Near you
Residents throughout Pasadena commonly search for Los Angeles-based private investigators capable of handling their most sensitive cases. Whether it’s locating a missing individual or performing surveillance on a suspected cheating spouse, we understand that Pasadena clients need more than just any investigator—they need someone who knows the area and understands the emotional weight behind the work. With over twenty-five years of experience in Pasadena, we’ve conducted investigations across neighborhoods like Bungalow Heaven, Madison Heights, and near Old Town, where cheaters thought they could hide in plain sight.
Some of our most successful surveillance cases have taken place during mid-morning hours on weekdays—when the spouse claims to be at work but clearly isn’t. Hotel meetups at the Ramada Inn, lunch-hour rendezvous, and “running errands” that mysteriously last four hours? We've even captured couples having late night hook ups at the local dive bar, the Colorado Bar. We’ve seen it all. In fact, catching a cheating spouse often comes down to following routine patterns they think no one’s watching. Spoiler alert: we are.
We’ve also handled cases involving child support, cohabitation verification, and other delicate domestic issues—each approached with care, precision, and total discretion. When your case demands a thoughtful, experienced, and efficient approach, trust the professionals who’ve done it time and time again. Don’t leave the outcome of your case—or your budget—in the hands of someone just learning the ropes. Contact us today for a confidential, no-pressure consultation. The truth might sting, but it’s better than being in the dark.
Paramount Investigative Services | Your Pasadena Private Detectives:
If you're looking for a private investigator in Pasadena, look no further than the team of experienced, licensed and insured professionals at Paramount Investigative Services. With offices across LA county and experience dating back over two decades, Paramount Investigative Services proudly stands as one of the state's top Pasadena Private Detectives firms. Either call or email us today for your free consultation! For Directions from the Pasadena area or the foothills of Arcadia and Monrovia areas.
Should I use an airtag to track someone?
The short answer is, no. It is not a good idea. Not only do most phones alert you when an airtage is present and has been with you for a short amount of time, it is likely against the law. See our full article on why you shouldn't use an airtag to track your spouse. Read more about gps tracking and using apple airtags to track your cheating spouse
Is hiring a PI legal?
Hiring a PI is legal unless we're hired for illegal or harassing reasons. Paramount is proud to operate fully within the law under a California PI license since 2005. Verify our PI license 24065
What types of cases do we handle?
We take on all types of cases from workers comp fraud and personal injury insurance fraud, to cheating husbands, cheating wives, cheating boyfriends and cheating girlfriends. See our full list of investigative services here
What do private investigators do?
In short, private investigators can locate witnesses, interview people, and perform surveillance. However, there are plenty of private investigators that have developed special niches for themselves. There are private investigators that specialize in undercover purchases for fake goods, locate missing pets to criminal investigations and post conviction work. Check out our list of services we provide here:
How can I verify a private investigators license?
Verifying a California private investigators license is easy. Google “BSIS” and then click “Verify a Private Investigators license” Enter Paramount Investigative Services and License number 24065 for our current licensing information or Click this link for our current license information
How can I verify a Los Angeles Private Investigators License?
To verify a CA private investigator it's two steps. GO to Bureau of Security and Investigative Services or “BSIS” Then select “private Investigator” and on the following page you'll insert various information; company name, the owners name, their license number etc. It will then show you if the licensee and if they valid and current. Paramount Investigative Services Inc.
What can a private investigator do?
Private investigators can perform the few basics; research, surveillance, interviews and serve court documents. There are some investigators with specialized backgrounds with their own niches like serving court documents to those who are being evasive, finding missing or stolen pets, investigating stolen vehicles to OSNIT investigations.
What is a private investigator?
A private investigator is a private person who is licensed within their state to perform professional services such as; gathering information and conducting field investigations for private individuals, corporations, and attorneys. They use a variety of techniques, such as surveillance, background checks, and data analysis, to uncover information and provide their clients with the answers they seek.
What services do private investigators provide?
Private investigators offer a wide range of services, including but not limited to: background checks, surveillance, locating missing persons, investigation into insurance fraud and white-collar crime, and gathering evidence for legal cases. Some PI’s also specialize in specific areas such as computer forensics, infidelity investigations, or corporate investigations.
What kind of cases do private investigators take?
Private investigators can handle a wide range of cases, including infidelity investigations, missing person cases, background checks, corporate fraud investigations, and more. They are often hired to gather information and evidence for divorce or child custody cases, and to investigate potential insurance fraud.
What do I do if I suspect my spouse is cheating?
If you suspect your spouse of adultery First, you must approach the situation with care and caution. We ask you to try to identify what you believe is going on and when you think they could be having the affair. Then hire a licensed private investigator to perform surveillance and see if they are cheating or not. If they are cheating, you can take this information and work towards your desired outcome.
How do I report someone for suspected insurance fraud?
The first step is to gather the evidence by hiring a licensed private investigator. Second, if there was fraud uncovered you should fill out the FD-1 Suspected insurance fraud form. Then fax or email it to the Department of Insurance and your local district attorney’s office.
Is it illegal to hire a private investigator to follow someone?
It is legal for private investigators to follow someone in many countries, as long as they are conducting their activities within the bounds of the local laws and do not engage in trespassing or harassment. If you are in need of surveillance services click here to read more.
Can private investigators hack phones?
No. Hacking a phone or laptop is illegal. If someone tries to sell you hacking services, they are scamming you.
How can I hire a private investigator?
Hiring a private investigator starts with researching potential candidates and checking their credentials, such as licensing. You can ask for referrals from friends, family, or lawyers, or search online for local investigators. Once you have a list of potential investigators, you should schedule a consultation to discuss your specific needs and the investigator’s experience and approach to the case. It is important to have a clear understanding of the costs and services before hiring a PI. This is a video of our most popular question, “5 Tips on How to Hire a Private Investigator” or if you prefer see our guide on How to Hire a Private Investigator“ page.
How do private investigators get information?
Private investigators use a variety of methods to gather information, ranging from online database searches, OSNIT methods, to talking with neighbors and perform mobile surveillance. Depending on the case and the client’s budget, a private investigator will determine what resources to use in order to acquire the most clear, concise and efficient evidence possible.
What can private investigators legally do?
Private investigators can legally investigate for corporations, insurance companies and individuals. They use various methods to collect evidence from scouring the internet to gathering statements from witnesses, to performing surveillance investigations. Private investigators are private citizens and are held to the same legal standards.
Are private investigator’s findings admissible in court?
This question is the cornerstone of our entire business: will the evidence we gather be enough? Luckily, due to our experience, we know exactly what will and what won’t hold up in court, as well as the limitations of evidence submitted to court. Our gathered evidence, when coupled with a qualified attorney, typically produces favorable results. If you case has any legitimacy, trust us to gather the hard evidence required to prove yourself in court!
Is it worth it to hire a private investigator?
This question requires a more complex answer. Private investigators can be seen as an extension of insurance. We’re capable of providing hard evidence, and standing as an expert witness in court if necessary. At Paramount Investigative Services, we discuss the entirety of your case with you prior to beginning our work. This way, we’re able to tell you whether or not you even need our services to begin with. While we’re happy to work with you to uncover additional information, we’re not interested in taking your money for cases that we know won’t lead anywhere. Honesty is essential when working with a PI, and at PIS, we’re completely committed to upholding our reputation as trustworthy and straightforward.

